2017 annual progress report summary · web viewthe conductor will be 1590 acsr/tw and is expected...

LIST OF ANNUAL PROGRESS REPORTS TO WECC - 2017NORTHWEST POWER POOL AREA

CONTENTS AND REMARKS

Name of ProjectGenMW

Transmission kV Date

No. ofpages

TransferCapability Phase

Power Transient Post Transient OneTables Flow Stability Stability Lines Maps

Request Copy of Report From

Edmonton Region 240 kV Line Upgrades – P786

240 In Service .6 The majority of this project has been completed:• Increase the capacity of 908L and 909L up to the summer rating of the primary conductor (2 x477 kcmil) by replacing the conductor on the small conductor section (first 4 km of line east ofSundance 310P)• Increase the capacity rating of 902L up to the summer rating of the primary conductor (2 x477kcmil) by replacing the conductor on the small conductor sections of 902L (first 4 km of lineeast of Wabamun 19S and first 4 km of line east of Sundance 310P)• Construct 12 km of new double circuit 240 kV line with one side strung east from Keephills 320Pto the 904L-908L-909L confluence point west of Stony Plain in order to move the terminationpoint of 908L from Sundance 310P to Keephills 320P, and add two associated 240 kV breakersat Keephills 320P• Swap the connections of 904L and 908L at the 904L-908L-909L confluence point south of Jasper805S in order to move the termination point of 904L from Wabamun 19S to Sundance 310P• Install Special Protection Systems (SPS) for three double circuit tower failure events (CategoryC5)• Install a 240 kV 600 MVA phase shifting transformer in 9L57 line and three associated 240 kVbreakers; preferred location is the proposed Livock station north of Brintnell.The following components of the project have not yet completed construction due to continued negotiations with land owners:• Rebuild the 41 km east-west single circuit wood pole sections of 904L (Jasper to Wabamun) using 2 x 1033 kcmil conductor. On-going negotiations with land owners in the area has delayed completing this work.• Rebuild the 6 km east-west single circuit wood pole section of 904L (Jasper to Petrolia) using 2 x 1033 kcmil conductor.• Increase the capacity of both 904L sections out of Jasper 805S up to the summer rating of the primary conductor (2 x 477 kcmil) by replacing the conductor on the small conductor section (12 km of line south of Jasper 805S).The project is under construction and the current expected in service date is end of late 2016.

Brian BelwayProject Manager

TransmissionAlberta Electric

System Operator (AESO)

2500, 330 – 5th Avenue SW

Calgary, AB T2P 0L4

403-539-2569Brian.Belway@aes

o.ca (AESO)

Northwest Alberta Transmission System Reinforcement

240 2011-2012

.5 This project involves adding new transmission facilities listed below and is required to maintain reliability of supply and to meet load growth in the northwest Alberta. The need for the entire project has been approved by the provincial regulatory board.

Brintnell to Wesley Creek 240 kV Line – This sub-project involves building a new 240 kV line (145 mi) with 2 x 477 MCM conductors per phase (summer/winter capacity of 550/702 MVA respectively). This new line was energized December 18, 2009.

Wesley Creek to Hotchkiss 144 kV Line – This sub-project involves building a new 144 kV double circuit line (83 mi) with each circuit with 2 x 477 MCM conductors/phase (summer/winter capacity – 330/422 MVA) and is planned to be completed in 2011.

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Sulphur Point to High Level 144 kV Line – This sub-project involves building a new 144 kV single circuit line (65 mi) with 1 x 266.8 MCM conductors/phase (summer/winter capacity – 114/146 MVA) and is planned to be completed in 2012.

Ring Creek Arcenceil (near Rainbow Lake) 144 kV Line – This sub-project involves building a new 144 kV single circuit line (70 mi) with 1 x 266.8 MCM conductors/phase (summer/winter capacity – 114/146 MVA) and is planned to be completed in 2012.

Reactive Power Support in Northwest Alberta – This sub-project involves adding smaller cap banks at various locations to a total of 180 MVARs in northwest Alberta. In addition, two small SVCs will be added as follows: 30 MVAR @ Cranberry Lake; -5 + 30 MVAR at High Level. This sub-project is planned to be completed in 2012.

9L15 termination into Livock 240 2015 .2 This project involves the following developments to provide additional support to the NortWest region of Alberta and increase flows inout of the Fort McMurray area;

15 km of 240 kV line (Brintnell to Livock)Remove 9L15 termination from Brintnell

Terminate 9L15 at Livock (brkrs only, Livock should already have the diameter)

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Northwest Alberta Transmission System Reinforcement

240 2015-2017

.3 This project involves the following 240kV and 138kV reinforcements to the NorthWest region of Alberta;

Bickerdick to Little Smoky- The double circuit 240kV line will help to eliminate the voltage collape and overloaded problem in northwest; it is assumed to be in the service by 2015

New Wimbley 240kV substationNew Double Circuit 240kV line from Little Smokey to Wimbley.

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Southeast Transmission Reinforcement (SETR)

240/138 2011 .4 SETR is a system upgrade to accommodate continued growth in wind generation in the southern Alberta region. This project was approved in July 2008 and is under construction.

138 kV and 240 kV lines and substations upgrade in Lethbridge, Brooks and Empress areas.

Construction of a new 138/240 kV 2 x 200 MVA Cypress Substation.Salvage of 2 x 200 MVA 138/240 kV auto-transformers and replacement by

2 x 400 MVA 138/240 kV auto-transformers.Addition of a third 138/240 kV 200 MVA auto-transformer at North

Lethbridge.Addition of capacitor banks at Tilley and McNeill.

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Yellowhead Area Transmission Development – P671

240/138 2011 .1 138 kV and 240 kV development in the area to support future load growth. “

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Livock 240/144 kV Connection – P834

240/144 2011 .1 Development of Livock 240/144 kV connection to support load growth in the Fort McMurray area near Brintnell station.

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Fidler 312S 240/138 kV Interconnection – P936

240/138 2012 .2 AESO is preparing needs identification document (NID) application and transmission facility owner is preparing facility application (FA) targeted to file with the Alberta Utilities Commission (AUC) in Q2 2010. This system upgrade is to accommodate continued growth in wind generation in the southern Alberta region. The target in service date is 2011 with the following major components:

New 240/138 kV Fidler Substation138 kV line re-location

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Northeast Fort McMurray 240 kV Loop – P791

240 2012 .1 Development of 240 kV loop to reinforce the north Fort McMurray area to support load growth.

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Halkirk 1 Wind Project – P723

150 240 2012 .1 Capital Power intends to connect a 150 MW WTG facility into the Alberta electric grid system via a new 240 kV Transmission line by mid 2012.

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Naturener Wild Rose Wind Farm 1 – P479

210 240 2018 .4 Wild Rose 1, a 210 MW wind-powered generating facility, is comprised of 70 x 3 MW wind turbine generators with a collector substation located approximately 45 km southeast of the City of Medicine Hat. This wind power plant will be connected from the Wild Rose 547S station to the Elkwater 264S station via a single circuit 240 kV line.The proposed in-service date for the interconnection of Wild Rose 1 is July 2017. The Facilities Application was approved by the Alberta Utilities Commission on March 21, 2012.

Dale BergmenProject Manager

Transmission Project DeliveryAlberta Electric



Calgary, AB T2P 0L4

403-539-2704Dale.Bergman@ae

so.ca

Naturener Wild Rose Wind Farm 2 – P693

204 240 2018 .4 Wild Rose 2, a 189 MW wind-powered generating facility, is comprised of 63 x 3 MW wind turbine generators with a collector substation located approximately 30 km south of the City of Medicine Hat. In the near future, the wind power facility will be expanded to have a total of 204 MW installed capacity. This wind power plant will be connected from the Eagle Butte 274S station to the Elkwater 264S station via asingle circuit 240 kV line.The proposed in-service date for the interconnection of Wild Rose 2 is December 2016. The Facilities Application was approved by the Alberta Utilities Commission on March 21, 2012.





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Fort McMurray West 500 kV Line – Project 1590

500 2019 .3 The project was part of Project 838 - Fort McMurray Area Transmission Bulk System Reinforcement. The project consists primarily of one 500 kV AC line from Sunnybrook station to the new Thickwood 500/240 kV station in the Fort McMurray area with a target operation date of June 2019. The project was competitively procured as required by legislation, and Alberta PowerLine Ltd. (consortium) was selectedby the AESO in December 2014 as bid winner. Alberta PowerLine Ltd. Filed its Facility Application with the AUC on December 1, 2015 and it is currently waiting for approval. http://www.albertapowerline.com/ As this project was approved through legislation, transmission need approval from the Alberta Utilities Commission was not required.

Kelly Yagelniski, PMP, B.Admin

Director, Project Support



403-539-2878 direct

[email protected]

Project 1591 - Fort McMurray 4.1.1 East 500 kV Line

500 .3 The project was part of Project 838 - Fort McMurray Area Transmission Bulk System Reinforcement. The project consists primarily of one 500 kV AC line from the Heartland station to the new Thickwood 500/240 kV station in the Fort McMurray area with operation date to be determined.As this project was approved through legislation, transmission need approval from Alberta Utilities Commission is not required.The project is required to be competitively procured by legislation, and the timing of this development is under review.

Pauline McLeanDirector,

Competitive Process

Renewables Development & Sustainability

Alberta Electric System Operator

(AESO)403-539-2904

(direct)pauline.mclean@a

eso.ca

Kelly Yagelniski, PMP, B.Admin

Director, Project Support



403-539-2878 direct

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[email protected]

Christina Lake Area Development

240/144 2015 This project involves the development of looped 240kV double circuit in the Christina Lake area south of FortMcMurray. The project will allow connection of new load and reinforce the transmission system to accommodate the forecasted load and generation growth in the area south of Fort McMurray. The project involves the following;

3 new 240/144kV substations (CHL1, CHL2 and CHL4) Termination of the new looped 240kv line into the existing HeartLake

substation

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Algar 240/144 kV substation

240/144 2015-2017

This project involves the construction of a new 240/144 kV substation to provide a fourth source to the 144 kV transmission system in Fort McMurray to accommodate load growth in the area and alleviate anticipated congestion on the 144 kV system.

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Algar-Kinosis 240 kV line 240 2017-2020

This project involves the construction of a new 240 kV circuit connecting the existing Kinosis substation to the new Algar substation. This project will provide needed reinforcement to the Fort McMurray 240 kV network in order to accommodate the forecasted load growth.

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Southern Alberta Transmission Reinforcement (SATR) – P787

240 2022 1 2400 The project considers the implementation of a 240 kV loop in the Southern Alberta region in order to allow the future connection of wind power in that region and to move this power to the Calgary area through three power corridors; in the east from Whitla to West Brooks, in the center from Peigan/Windy Flats to Foothills and on the west from Goose Lake to Langdon through the existing 500 kV transmission line1201L. This project consists of the following lines:• 911L replaced by Foothills to Peigan (Windy Flats) 240 kV double circuit transmission line with 50% series compensation. Each circuit rated with a summer/winter capacity of approximately 980/980 MVA. (Commissioned)• A new 240 kV double circuit line, approximately 150 km in length from Cassils (near West Brooks) to Bowmanton (East Medicine Hat). Each circuit is rated at a summer/winter capacity of approximately 980/980 MVA. (Commissioned)• A new 240 kV switching station at a location known as Milo Junction and converting the two existing three terminal Langdon - West Brooks - North Lethbridge lines into six two-terminal lines. (Commissioned)• A new 240 kV double circuit line, approximately 80 km in length from Bowmanton (Medicine Hat) to Whitla connecting the wind farms in the south. Each circuit is rated at a summer/winter capacity of approximately 980/980 MVA. (Commissioned)• New Chapel Rock 500/240 kV substation cut in and out of existing 1201L. The station will include two 1200 MVA 500/240 kV transformers, two 240 kV 100 MVAr capacitor banks and a +200/-100 MVAr SVC and one 45 MVAr shunt reactor.• New Chapel Rock – Castle Rock Ridge - Goose Lake 240 kV double circuit transmission line with a rated summer/winter capacity of approximately 980/1200 MVA.• Add a 138 kV phase shifting transformer between Coleman and Pincher Creek.

Dale BergmanProject Manager –

TransmissionProject Delivery

SouthAlberta Electric



Calgary, AB T2P 0L4

Tel: 403-539-2704Dale.Bergman@ae

so.ca

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(Commissioned)• The addition of two (2) 240/138kV 400MVA transformers at new Windy Flats station near existing Peigan 59S station. (Commissioned)• New 240 kV Etzikom Coulee (a.k.a. Journault) substation to connect future wind farms. (On hold)• Interconnect Picture Butte (MATL) to Etzikom Coulee (PBEC) substation with double circuit 240 kV line, one side strung. (On hold)• Interconnect Goose Lake with Etzikom Coulee (GLEC) substation with double circuit 240 kV, one side strung. (On hold)The project is expected to be operational by 2016 except for those components on hold. Components on hold are at or near Facility Application stage pending further technical assessments to proceed and could be in service in 2020 depending on regulatory progress.The connection studies conducted for this system project does not indicate a negative impact on the transfer capability of WECC Path 1.

South and West of Edmonton Transmission Development – P850

240 2017 1 This project addresses the need for development in the area South and West of Edmonton. The approved alternative includes:• New 240/138 kV station (Harry Smith 367S) south of Stony Plain with two 240/138 kV 400 MVA transformers, connected by an in and out connection to 1043L between Keephills 320P and Petrolia 816S• New 240/138 kV station (Saunders Lake 289S) north of Leduc with two 240/138 kV 400 MVA transformers, connected by an in and out connection to 910L between Ellerslie 89S and Wolf Creek 288S, and connected by an in and out connection to 914L between Ellerslie 89S and Bigstone 86S• New 25 km 138 kV line from 780L to Cooking Lake and reconfiguration• New 13 km 138 kV line from Harry Smith 369S to East Stoney Plain 434S• Two new 13 km 138kV line from Harry Smith 367S to Acheson 305S• Two new 1 km lines from Saunders Lake 289S to 780L and to 868L• Normally open operation of 133L between Wabamun 19S and 243L tap• New capacitor banks at Leduc 325S (27 MVAr)The transmission facilities Needs Identification Document was filed with the Alberta Utilities Commission December 2012 and approved December 2013. Facilities applications are pending from the TFO (AltaLink) to the Alberta Utilities Commission. The expected in service date is late 2017.

Ilice TanProject Co-ordinator

TransmissionAlberta Electric



Calgary, AB T2P 0L4

[email protected]

Alberta Industrial Heartland Bulk Transmission Development – State 2

500/240 2015-2020

The purpose of this project is to reinforce the 240 kV network in northeastern Alberta and increase reliability to the connection of the East HVDC lines. This project will involve the following reinforcements:

Second 500/240 kV transformer at HeartlandDouble circuit 240 kV from Heartland to EastwoodDouble circuit 240 kV from Eastwood to 942L tap. 10 km 2 x 1033 double

circuit.

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P1354 – Foothills Area Transmission Development

240 2017 The Foothills Area Transmission Development is a regional system project that is required to support load growth and generation increase in the Calgary and Foothills areas, and also to support the wind power generation increase in southern Alberta. The project consists of initial stage of a new Foothills substation to terminate the new 240 kV lines from Fort McLeod area in southern Alberta.

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P1118 – Foothills Area Transmissiion Development West Calgary Development

240/138 On Hold .5 Foothills Area Transmission Development – West Region (FATD West, Project No. 1118)This project will include the installation of 240 kV lines between Foothills 237S and Sarcee 42S.• A new 240 kV double circuit line from Foothills 237S to Sarcee 42S with a minimum summer rating of 600 MVA for each circuit. The lines are designated 1066L and 1067L.ISD beyond 2020.

Sonja TessariProject Manager



2500, 330 - 5th Avenue SW

Calgary, AB T2P 0L4

403-539-2669Sonja.Tessari@ae

so.ca

C-Free Power Oyen Wind Project – P763

100 2013 .1 The project involves development of a 100 MW wind power generating plant. “

Edmonton - Calgary West DC Lline – P962

+/- 500 DC Q4/2014 .3 To alleviate congestion on the N-S transmission system, restore capacity of interties, improve efficiency of the transmission system (reduce losses), and avoid potential reliability issues, the following development has been proposed:

Construct a +/- 500 kV bipole, HVDC transmission line between the Genesee area and the existing Langdon 102S substation.

Construct monopole HVDC converter station facilities, with an initial rating of a minimum of 1000 MW.

The need for this project was approved by the Government of Alberta as part of the Critical Transmission Infrastructure. The project is currently in the facility siting phase and is forecasted to be in service by Q4 2014.

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Edmonton - Calgary East DC Lline – P961

+/- 500 DC Q4/2014 .3 To alleviate congestion on the N-S transmission system, restore capacity of interties, improve efficiency of the transmission system (reduce losses), and avoid potential reliability issues, the following development has been proposed:

Construct a +/- 500 kV bipole, HVDC transmission line between the Heartland area and a new 240 kV substation south of Westbrooks (Newell).

Construct monopole HVDC converter station facilities, with an initial rating of a minimum of 1000 MW.

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The need for this project was approved by the Government of Alberta as part of the Critical Transmission Infrastructure. The project is currently in the facility siting phase and is forecasted to be in service by Q4 2014.

Benign Energy Heritage Wind Farm - P515

350 2018 .5 The proposed Heritage WAGF will be connected to the Alberta Interconnected Electric System (“AIES”) at the Fidler 312S substation in the Pincher Creek area. The windfarm is rated at 350 MW with 100 MW inservice at Stage 1 and 250MW at Stage 2. The Stage 1 development is dependent upon the completion of substation Fidler 312S for connection. The Stage 2 development is dependent upon the completion of transmission lines 1004L/992L from Fidler 312S to Chapel Rock 491S for connection. Under the current configuration, the wind power plant will consist of Vestas V90 3MW wind turbines. Both stages are onhold pending regulatory approval of Fidler 312S and transmission lines 1004L/992L.The reason for the staged approach is to inject as much as the system can handle without serious RAS constraints prior to the approval and completion of the Chapel Rock substation (connection to the 500 kV line). After the Chapel Rock Substation is built the system in the Pincher Creek area will become unconstrained (mostly) and will be able to handle the full projected output of the Heritage Windfarm.The requested In Service Dates (“ISD”) for Stages 1 & 2 are on-hold.

Anita PatelProject Co-ordinator

Transmission Connection

ProjectsAlberta Electric



Calgary, AB T2P 0L4

403-539-2516 (direct)

[email protected]

Bow City Power Project – P465

500 Project on hold

.1 This project requires 240 kV transmission development to accommodate the connection of the 500 MW Bow City coal fired power station. The project consists of a new 240 kV substation with approximately 4 km of 240 kV transmission line and the upgrade of existing 923L and 927L to a higher thermal rating. The project has been on hold since January 2008 and therefore a firm in service date is unknown.

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Pikani Energy Corp. Wind Farm – P773

220 .1 This 220 MW wind farm project is in the early conceptual stage and no connection has been determined or in service date targeted.

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Vindt Willowridge – P614 100 240 2013 Vindt Willowridge is a 100MW wind project that will connect to 966L “

Old Elm and Pothole Creek P1080

60 138 2018 1 The customer is considering a 60 MW wind farm located in the Glenwood area close to Magrath 225S. The customer is currently investigating the feasibility of a connection into the Alberta Interconnected Electric System (AIES) through a 138 kV line into Magrath 225S.

Anita PatelProject Co-ordinator




Calgary, AB T2P 0L4

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403-539-2516 (direct)

[email protected]

Bloodtribe Wild Turnip Hill 150 2014 150 MW connecting into 240KV Line 968L “

P635 - Suncor Hand Hills Wind Energy Project

80 240 Dec-13 The Suncor Hand Hills Wind Farm project is a 80 MW wind power site that is located north-west of Anderson 801S. The project consists of a 240 kV switching station (Mother Mountain) that is a 240 kV ring bus, a 240 kV single-circuit transmission line and a 240/34.5 kV collector substation (Hand Hills 605S).

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P678 - Nexen Hand Hills Wind Project

80 240 Apr-13 The Nexen Hand Hills Wind Farm project is a 80 MW wind power site that is located north-west of Anderson 801S. The project consists of a 240 kV additions at proposed Coyote Lake 963S, a 240 kV single-circuit transmission line and a 240/34.5 kV collector substation (High Land 572S).

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P811 - Central East Transmission Development

240 Dec-17 The Central East Transmission Development is a regional system project that is required to support growth in the Central Region. The project consists of re-energizing an existing transmission line to 240 kV from proposed Bourque 970S substation to Bonnyville 700S, modifications to Bourque 970S and a new 240 kV transmission line from Marguerite Lake 826S to proposed Bourque 970S.

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P812 - Hanna Region Transmission Development

240 Mar-13 The Hanna Region Transmission Development is a regional system project that is required to support growth in the Hanna region. The project consists of four 240 kV source substations (Coyote Lake 963S, Lanfine 959S, Pemukan 932S and Nilrem 574S) one 240 kV switching station (Oakland 946S), modifcations to existing 240 kV substations (Hansman Lake 650S, Ware Junction 132S and Cassils 324S), -100/+200 MVar SVC's (Hansman Lake 650S and Lanfine 959S) and about 300 km of new 240 kV double-circuit transmission.

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P1113 - Hanna Region Transmission Development Phase 2

240 2017 1 The Hanna Region Transmission Development Project is designed to reinforce the transmission system in the region in order to meet the projected wind aggregared generating facilities and future load growth, in particular, pipeline pumping loads. AML and ATCO are transmission facility owners (TFOs) as this area is serviced by these two TFOs. The major components of this project consist of:

• String second side on the 240 kV double circuit line from Oakland to Lanfine and related alterations at Oakland 946S and Lanfine 959S• Cordel 755S to Halkirk switching station, new double circuit 240 kV line (one side strung) and related alterations• Anderson to Oakland Transmission Project 9L70/9L97 240kV lines, Oakland station and related alterations• String second side on the 240 kV double circuits line from Oakland 946S to Coyote

Ed MayerProject Manager

Transmission Projects


(AESO)2500, 330 – 5th

Avenue SWCalgary, AB T2P

0L4403-539-2757

(direct)

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Lake 963S and related alterations at Oakland 946S and Lanfine 959S.

Additionally, the following components are designed to reinforce the local network:• Convert existing Hanna 763S station to 144 kV station• New 144 kV line from Coyote Lake 963S to Hanna 763S and related alterations• Addition of 2nd 240/144 kV transformer at Pemukan 932S• Addition of 2nd 240/144 kV transformer at Lanfine 959S• Addition of 2nd 240/144 kV transformer at Hansman Lake 650S• Nilrem 574S station capacitor bank addition• Hansman Lake 650S station capacitor bank addition• Metiskow 648S station capacitor bank additions• Decommission of 6L44 (Rowley 768S to Big Valley 778S) and 6L22 (Michichi Creek 802S to Rowley 768S)

As per NID approval, the requested in-service date is year 2017. In light of change in system conditions (e.g. modest growth in wind development and load growth pattern), the AESO is presently reviewing the need as well as timing of the components through staging process. Until these studies are finalized, the project is on hold.

[email protected]

P813 - Red Deer Transmission Development

240 Q3 2014 1 The Red Deer Area Transmission Development project will be implemented in two stages, and is pending approval of the Facility Application.The following is an overview of the major components in stage I. The timing of stage II will be determined by the future load projections and/or a new generator application in the area.• Split 768L and 778L and re-terminate at Red Deer North 217S (add 1 breaker, use 1 existing breaker)• Gaetz 87S (add 2 breakers, use 1 existing breaker)• Add second auto-transformer at Benalto 17S.• Add one 50 MVAr 138 kV capacitor bank at Joffre 535S• Add one 50 MVAr 138 kV capacitor bank at Prentiss 276S• Add one 27.6 MVAr 138 kV capacitor bank at Ellis 332S• Re-build 5 km of 80L 138 kV transmission line from South Red Deer 194S (use existing breaker) to North Red Deer 217S (use existing breaker)• Re-build 5 km (including 1 km of underground) of 80L 138 kV transmission line from South Red Deer 194S (use existing breaker) to Red Deer 63S (use existing breaker)• Re-build 29 km 755L 138 kV transmission line from Red Deer 63S (use existing breaker) to Piper Creek 247S (use existing breaker) to Joffre 535S (use existing breaker)• Re-build 33 km 717L (now called 637L and 648L) 138 kV transmission line from Red Deer 63S (use existing breaker) to Sylvan Lake (use existing breaker) to Benalto (use existing breaker)• New Johnson 281S 240/138 kV substation with 240 kV double circuit (200m) from 918L and 2 km of double-circuit 138 kV line to 80L and a connection to 166L (Commissioned)• New 240/138 kV Wolf Creek 288S station with 240 kV double circuit (200m) from

Ed MayerProject Manager

Transmission Projects


(AESO)2500, 330 – 5th


0L4403-539-2757

(direct)[email protected]

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910L and 4 km of double-circuit 138 kV line to Ponoka 331S (use existing breaker from salvage of D13 and D16) connect to 883L• New 240/138 kV Hazelwood 287S station on the 240 kV line 924L• New 13 km of 138 kV transmission line from Lacombe 212S (add 1 breaker) to Ellis 332S (add 1 breaker)• Salvage 53 km 80L 138 kV transmission line from Red Deer 63S to Innisfail 214S• Salvage 23 km 80L 138 kV transmission line from Ponoka 331S to West Lacombe 958S (this will be less by the approx. 5 km of salvage now part of Wolf Creek (CP44))• Salvage 40 km of 716L from Wetaskiwin 40S to Ponoka 331S (this will be less by the approx. 5 km of salvage now part of Wolf Creek (CP44))The in-service date is in stages starting from 2013.The Needs Identification Document (NID) was filed with the Alberta Utilities Commission in July 2011, which was approved in April 2012. Facilities Applications were filed in stages, and as mentioned above several reinforcements are already in service.

New Fidler 312S Substation – Project 1343

240/138 10/2017 .5 Increased transmission capacity is needed in the area northeast of Pincher Creek and west of the Piikani Nation reserve to provide several wind generating facilities, two of which are already in service and others which are planned to be in service within the next two years, access to the transmission system. The existing two wind generating facilities are frequently required to reduce output during normal operating conditions due to existing transmission system constraints. The Fidler 312S Collector Substation Connection Project NID was submitted by the AESO to the AUC on October 26, 2012. NID and FA approval is expected by August 2013. The planned in-service date is April, 2014.The Fidler Project includes a two stage development.Stage 1:• Develop a new 240/138kV collector substation with one transformer• Add a new double circuit 240 kV line connecting Fidler 312S to the existing 1071L transmission line in an in-out configuration• Rebuild existing portions of 138 kV transmission lines connecting into the Fidler 312S substation• Configure 893L between Goose Lake 103S and the tap-off to Oldman River Dam 806S to normal open under normal operating conditionsStage 2:• Add a second transformer at Fidler 312S• Salvage existing 138kV transmission line 893L between Goose Lake 103S and the tap-off to Oldman River Dam 806S.Stage 2 is dependent on meeting the milestone when installed and proposed generation capacity connected at the 138 kV side of Fidler 312S exceeds 80% of the capacity of the first transformer (288 MW assuming 0.9 power factor).The requested in-service date for the new connection is October, 2017.





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Whitetail Peaking Station – Project 1290

200 2018 .3 Enbridge Inc. has proposed to construct the Whitetail Peaking Station as a new point of supply. The plant consists of 4 x 50 MW gas-fired peaking units. The project is to be developed in one stage with an in-service date of March 1, 2017.The power plant is located in the Peace River planning area (area 19) approximately 13.5 km north of the existing Wesley Creek 834S station and will be connected via t-tap to 7L106.

Steve PalmerTransmission

Project DeliveryAlberta Electric


2500, 330 - 5th Ave SW

Calgary, AB, T2P 0L4

Ph: 403-539-2558Cell: 403-463-6073

Three Creeks Power Plant – Project 1321

230 240 2018 .5 Shell has proposed to build a new Cogeneration Facility approximately 16 km northeast of the existing 240 kV Wesley Creek 834S station in the northwest region of Alberta. This facility is planned to consist of three identical gas-fired cogeneration units with a rating of 230 MW each, including 90 MW of on-site load.In 2015, Shell cancelled the natural resource development side of the project and is presently reconsidering the generation scope. Presently, the target in-service date for the first unit is September 1, 2017, however no confirmation has been received regarding generation Phases 2 and 3.Shell has announced that a decision regarding the generating units will be made in late Q2 2016, at which time AESO will reassess the project scope and the staged in-service dates.




2500, 330 - 5th Ave SW

Calgary, AB, T2P 0L4

Ph: 403-539-2558Cell: 403-463-6073

Project 1421 - ATCO Power Heartland Generating Station

1080 2019 1 ATCO Power Canada Ltd. is proposing to construct a combined cycle power station called ATCO Heartland Generation Station. The project will consist of two identical phases:• Phase 1: 510 MW generation in November 2018; and• Phase 2: An additional 510 MW (1020 MW total) in April 2020.Each combined cycle phase will include one natural gas-fired turbine and one steam turbine. The facility is planned to be connected to the Josephburg 410S substation near the City of Fort Saskatchewan





Calgary, AB T2P 0L4

403-539-2558steve.palmer@aes

o.ca

Project 1440 - Genesee Generating Station Unit 4 (“G4”) and Genesee Generating Station Unit 5 (“G5”)

1000 2021 .5 On April 30, 2013, the AESO received a system access service request (SASR) from Capital Power L.P. to connect two 500 MW natural gas-fired combined cycle blocks (Capital Power Energy Centre - CPEC) to the AIES at the Genesee power generation site. Each combined cycle block will consist of two gas turbine generators (GTG) and associated steam turbine generator (STG), all on one shaft driving one electrical generator.

Vladimir LopezTransmission



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CPEC indicated that the gross generation capacity is expected to be up to 1000 MW for both combined cycle blocks, which could be developed in stages. The study assumes that the gross capacity of the proposed generating station is 1000 MW.The facility in-service date is currently expected to be January 2018. However, CPEC indicated that this date is subject to change due to market conditions.


Calgary, AB T2P 0L4

(T) 403-539-2819vladimir.lopez@ae

so.ca

Project 1477 - TransAlta Sundance 7 Combined Cycle Power Plant

818 Cancelled .5 TransAlta MidAmerican (TAMA) Partnership is proposing to construct approximately 850 MW Sundance 7 generating facility in the vicinity of LSD 10-52-4-W5M. The site is located near existing TransAlta generating facilities near Wabamun. Sundance 7 will be a combined cycle power plant consisting of two gas turbine-generators (GT) of approximately 295 MW capacity (345 MVA, 0.85 p.f.) and a single steam turbine-generator (ST) of approximately 345 MW (405 MVA, 0.85 pf). The gross output is approximately 943 MW with an STS capacity of 850 MW. The maximum gross capacity at an average summer temperature of 15.3 degrees Celsius is 818 MW and the net output is 797 MW.

The anticipated in service date is June 2018 and the commercial operation date is targeted as January 2019.

Vladimir LopezTransmission




Calgary, AB T2P 0L4

403-539-2819vladimir.lopez@ae

so.ca

Project 1478 Rocky Mountain Power ASSISt

240 Cancelled 1 Rocky Mountain Power Inc. submitted a System Access Service Request (SASR) to the AESO on September 4, 2013 proposing the development of a compressed air energy storage (CAES) facility. The project is known as Alberta Saskatchewan Intertie Storage (ASISt) and is located in the Lloydminster planning area (AESO planning area 13).

The ASISt project is proposed as a 135 to 160 MW compressed air energy storage project using salt caverns for the energy storage with potential up to 300 MW. The air cavern storage will be designed for 24 to 60 hours of continuous operation at rated capacity. ASISt is planned to connect to a new 240 kV station proposed in the AESO’s Central Region Plan.

The ASISt CAES project will be directly connected to the Alberta grid through the planned 240 kV system development in Central East region of Alberta. Part of the design concept is to have a second 230 kV line segment to the Saskatchewan grid for alternate switching to enable connections to the Saskatchewan grid.

In addition to energy storage, ASISt is planned to provide a portfolio of ancillary services (while generating or compressing) and special system services such as black start, load following, voltage regulation, etc. and potentially a virtual intertie to Saskatchewan (i.e. the ability to compress from one region while simultaneously generating into the other region).

The facility will potentially have the capability to operate as “Power Source”

Tana LailanProject Co-ordinator


(AESO)2500, 330 – 5th


0L4403-539-2857

[email protected]

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(generating) or as “Power Sink” (compressing).

The requested in service date is October 1, 2018.

Porject 1467 H.R Milner 2 (M2) Generator Update

538MW cancelled .2 Maxim Power Corp. (MAXIM) is proposing to install two natural gas-fired turbines and two steam turbinesoperating as two blocks in a 1GT on 1ST configuration. This facility expansion, to be named MaximPower Milner 2 Expansion (M2), will be located near existing H.R. Milner generating plant in NW Alberta.The base load gross generation capacity for this facility is approximately 538 MW. The project will becompleted in two 269 MW phases, for a total of 538 MW. The target In-Service-Date (ISD) for Phase 1 isNovember 1, 2019. Phase 2 ISD target is November 1, 2021. MAXIM anticipates approximately 2 x 8.6MW (17.2 MW) for station service and auxiliary loads when the unit is operational.

Gerardo MarquezTransmission Connection ProjectsAlberta Electric System Operator (AESO)2500, 330 – 5th Avenue SWCalgary, AB T2P 0L4403-539-2917 (direct)gerardo.marquez

@aeso.ca

Project 1567 Sharp Hills Wind Farm

300 MW

10/2017 .2 On June 4, 2014 Sharp Hills Wind Farm Ltd. filed a System Access Service Request (SASR) with theAESO to connect a 300 MW wind power generating facility to the Alberta Interconnected Electric System(AIES). Sharp Hills wind farm will be located in the Hanna planning area (area 42) in the CentralPlanning Region. The facility is located within ATCO Electric Ltd. service area. The requested in-servicedate is December 31, 2017.

“

Project 1699 Joss Wind Power Northern Lights

400 MW

12/2019 .2 On September 8, 2015, Joss Wind Power Inc. requested System Access Service Request (SASR) toinstall a 400 MW wind power generating facility in the Swan Hills planning area (area 26). The proposedsize is currently 400 MW, however, Joss Wind Power Inc. has indicated this capacity may be reducedbased upon the feasibility of the preferred connection alternative. This new point of supply will be locatedin the Swan Hills Planning Area 26, north of ATCO’s existing Louise Creek 809S station. The requestedin-service date (ISD) for the proposed generation facility is September 1, 2019 with planned commercialoperation date December 1, 2019.

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Project 1724 BowArk Energy Echo Wind Power

300 MW

Cancelled On December 8, 2015 BowArk Energy Limited (“BowArk”) submitted a System Access Service Requestto the AESO requesting a connection of its wind power facility to the grid.The project is to be located in the Hanna planning area (area 42). BowArk is applying for 300 MW ofgeneration capacity with a requested In-Service-Date (ISD) of December 1, 2019. BowArk has alsoexpressed interest in alternatively reducing the plant capacity to only 144 MW and connect to the 138 kVside of the Lanfine 959S substation in the event that sufficient capacity for a 300 MW plant cannot befound at 240 kV.

*

Project 1734 Suncor Forty Mile Wind Farm

200 MW

12/2019 .1 On January 6, 2016 Suncor Energy submitted a System Access Service Request to the AESO to connecttheir proposed 200 MW wind farm to the grid. The proposed wind farm is in the Medicine Hat planningarea (area 4). Suncor has requested an in service date of Q4 2019.

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Project 1749 Renewable Energy System Canada (RESC) Forty Mile Wind Power Plant

350 MW

12/2019 .1 On February 5, 2016 RESC submitted a System Access Service Request to the AESO requestingconnection of its 350 MW wind power facility to the grid located in the Medicine Hat planning area (area4). RESC has requested an in service date of Q2 2019.

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Capital Power Whitla Wind power P1800

300 2019 On May 25, 2016 Capital Power submitted a System Access Service Request to the AESO requestingconnection of its 300 MW wind power facility to the grid located in the Medicine Hat planning area(Area 4). The project has a requested an in-service date of Q3 2019.

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P1812 Suncor Forty Mile WAGF

200 2020 On July 4, 2016 Capital Power submitted a System Access Service Request to the AESO requesting connection of its 200 MW wind power facility to the grid located in the Medicine Hat planning area (Area 4). The project has a requested an in-service date of May 1, 2020.

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P1861 Enterprise Bighorn WAGF

325 2019 On September 7, 2016 Enterprise submitted a System Access Service Request to the AESO requestingconnection of its 325 MW wind power facility to the grid located in the Stavely planning area (Area 49). The project has a requested an in-service date of Q1 2019.

*

P1875 EDF EN Red Rock WAGF

250 2019 On October 14, 2016 EDF EN submitted a System Access Service Request to the AESO requesting connection of its 250 MW wind power facility to the grid located in the Medicine Hat planning area (Area 4). The project has a requested an in-service date of October 1, 2019.

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P1896 EDFEN Cypress WAGF

250 2019 On November 22, 2016 EDF EN submitted a System Access Service Request to the AESO requesting connection of its 250 MW wind power facility to the grid located in the Medicine Hat planning area (Area 4). The project has a requested an in-service date of October 1, 2019.

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P1924 – ENMAX Zephyr Wind

200 2019 On October 14, 2016 ENMAX submitted a System Access Service Request to the AESO requesting connection of its 200 MW wind power facility to the grid located in the Vauxhall planning area (Area 52). The project has a requested an in-service date of Q4 2019.

*

P1797 RES Oyen Wind 220 2019 On May 16, 2016 Renewable Energy Systems Canada Inc (RES) submitted a System Access Service Request to the AESO requesting connection of its 220 MW wind power facility to the grid located in the Hanna planning area (Area 42). The project has a requested an in-service date of June 28, 2019.

*

P 1760 EDF EN Fort Saskatchewan WAGF

300 2019 On March 15, 2016 EDF EN Canada Development Inc. (EDF) submitted a System Access Service Request to the AESO requesting a connection for a new 300 MW wind aggregated generation facility to the grid located in the Fort Saskatchewan (Area 33) area. The requested in-service date for this project is October 1, 2019.

*

P1761 EDF EN Hand Hills WAGF

200 2019 On March 15, 2016 EDF EN Canada Development Inc. (EDF) submitted a System Access Service Request to the AESO requesting a connection for a new 200 MW wind aggregrated generation facility to the grid located in the Sheerness (Area 43) area. The requested in-service date for this project is October 1, 2019.

*

P1827 Suncor Cogeneration Project

700 2021 On July 29, 2016, Suncor Energy Inc. (Suncor) submitted a SASR to the AESO for the addition of generation at their Base Plant in Fort McMurray. The project will add approximately 700 MW (2 x 350 MW) gas turbines to their current generation capacity. Suncor has requested an in-service date of July 1, 2021.

*

Noxon Rapids Turbine Upgrades

+ 42 MW

In-Service .2 Avista’s Power Supply function is engaged in turbine blade upgrades on Noxon Rapids units #2, #3, and #4. These upgrades will add an additional 14 MW’s respectively to the existing turbine capacities. The total electrical output of the Noxon Rapids project will be a maximum of 557 MW. This electrical limit does not consider any hydraulic limitations associated with the greater Clark Fork River project (which includes Cabinet Gorge and Noxon Rapids).

Tracy Rolstad(509) 495-4538

(AVA)

Major Generation Addition (> 200 MW)

2022-2024

.4 Plant Capacity In Service StatusDate

Site C G1 183.3 MW Dec. 2022Site C G2 183.3 MW Dec. 2024Site C G3 183.3 MW Dec. 2024

Guihua Wang(604) 699-7367

(BCHA)

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Site C G4 183.3 MW Dec. 2024Site C G5 183.3 MW Dec. 2024Site C G6 183.3 MW Dec. 2024

Vancouver City Central 230 kV Transmission Project

230 In-Service .2 Currently in implementation phase, this project constructs a new substation and new transmission lines.New station: Mount Pleasant SubstationNew lines: 2L20 (3.4 KM) – Cathedral Square to Mount Pleasant

2L44 (4.8 KM) – Mount Pleasant to Sperling

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Northwest Transmission Line (NTL) Project

287 In-Service .2 Currently in implementation phase, the Northwest Transmission (NTL) Project consists of approximately 340 km of 287 kV transmission line from the Skeena Substation near Terrace to a new substation at Bob Quinn and a series compensation capacitor bank (35%) at Bob Quinn. The NTL will provide infrastructure for connecting new sources of generation, future industrial development and communities in the area.

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Fraser Valley West Area Reinforcement (230 kV)

230 In-Service .2 Construction of a new substation and new transmission lines.New station: Fleetwood SubstationSplitting 2L75 from Ingledow to McLellan to 2 lines.New lines: 2L75 (8 KM) – Ingledow to Fleetwood

2L81 (8 KM) – Fleetwood to McLellan

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Nicola Station Reconfiguration

In-Service .2 A project is planned to reconfigure Nicola station, a critical station that collects powerflows from the South Interior before transmitting the power to Lower Mainland, toprevent total lost of the station and increase the reliability of the transfer of power tothe Lower Mainland. Definition work was initiated for this project.

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Metro North Area Reinforcement (230 kV) – Alternative 3

230 10/2021 .2 The planning study is in progress and the following identified is only one alternative, may subject to changes:1) Construct a new 21.5 kM, 230 kV circuit from Meridian to Horne Payne (2L18).2) Extend an underground circuit (2L51) from Barnard to Mount Pleasant.3) Add 203 kV – 60 MVAR switchable shunt reactor on dedicated 230 kV line position at Camosun

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West End 230 kV Substation

230 Cancelled .2 The planning study is in progress and the following identified is only one alternative, may subject to changes:New station: West End substationSplitting 2L32 from Horne Payne to Cathedral Square to 2 lines2L32 (7.5 KM) – Horne Payne to Murrin2L30 (1.2 KM) – Murrin to Cathedral SquareReterminate 2L33 from Cathedral Square to West End (by extending 2.4 KM of newunderground transmission)Reterminate 2L3 from Horne Pane to West End (by extending 10.5 KM of new

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underground transmission). As a result, 2L3 becomes a mix of overhead and underground transmission from Walter to West End.Add new underground transmission from Cathedral Square to West End (2 KM)

Transmission Lines from Site C to Peace Canyon

500 12/2022 .1 At preliminary planning stage, this project is to build two 500 KV lines from Site C to Peace Canyon, to accommodate site C new generation.

Transmission lines kV In Service5L5 – South Bank x Peace Canyon 500 12/20195L6 – South Bank x Peace Canyon 500 12/20225L15 – Site C x South Bank 500 12/20225L16 – Site C x South Bank 500 12/20225L17 – Site C x South Bank 500 12/2022

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Kitmat Modernization Project

287 In-Service .2 Kitmat Modernization Project consists of rebuilding the Kitimat smelter and adding35% series compensation on the two Kimano to Kitmat 287 kV transmission lines by building a series capacitor station near Kitmat. Five 287/100/28 kV 219 MVA regulating transformers will be installed.

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Prince George Terrace Compensation (PGTC)

6/2021 .1 At preliminary planning stage, this project is to install 65% series compensation at 5L61, 5L62, 5L63 from WSN to SKA substation, to accommodate LNG loads in North Coastal BC region. Add 2 x 130 MVAR shunt capacitor at GLN500.

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Forrest Kerr IPP 211.4 In-Service .1 Coast Mountain Hydro proposes to develop a run-of-river hydroelectric facility North of Stewart. Total plant rated output is 211.4 MW.

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Vancouver Island Cable Project

230 In-Service .1 Add a new 230 kV cable circuit (2L142) from George Tripp to Horsey and add one 150 MVA – 230/138 (T14) transformer at George Tripp.

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Terrace - Kitimat Transmission Project

cancelled .1 Previously reported as Minette to Skeena Line Rating Upgrade (2L99). This project would replace the 60km transmission line that runs between Skeena and Minette substations and the 3km transmission line that runs between Minette and Kitimat substations with new lines on a new right of way.

“

Skeena Substation Upgrade

500/287/12.6 cancelled .1 Add Skeena T3 (500/287/12.6) transformer due to new Kitimat LNG2 load. “

Bob Quinn SVC Addition 4/2019 .1 Add +100/-40 SVC for system reinforcement to accommodate NTL (2L102) new mining loads.

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Add series compensation on circuit 2L102

cancelled .1 Add series compensation on NTL (2L102) near Skeena due to new mine loads “

Peace Region Electric Supply (PRES) Project – Alternative 5

8/2022 .1 This alternative is to build two 500/230 kV 600 MVA transformers and two 230 kV linepositions, and construct a 60 km 230 kV double circuit transmission line from Site C to Shell Ground Birch (SGB).

The previously reported alternative 2 (as described in the following) has been replaced: Alternative 2 -- Construct a 2nd 22.8 KM 230 kV overhead transmission line from GMS to Dokie Terminal. Construct a 64.1 KM 230 kV transmission line from Dokie Wind Terminal to Sundance. Replace GMS T13 & T14 with 2 new 600 MVA 500/230 kV transformers.

“

Reconfigure Williston Shunt Elements

4/2024 .1 This is a System reinforcement due to Site C project:a. Install a 200 MVAR mechanically switched shunt capacitor bank at WSN.b. Add a new fixed line reactor on 5L7 at WSN with a 65 MVAR reactor.c. Reconnect the existing switchable line reactor on 5L7 at WSN to the WSN 500 kV bus.

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Merritt Area Transmission (MAT) project

138 In-Service This project is to construct a new 138 kV radial transmission line from the existing Highland Substation to a new substation in Merritt, to meet the increased demand for power in the Merritt area.

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Revelstoke Unit 6 Installation

500 4/2026 This project is to supply and install an approximately 500 MW unit in the existing empty Unit 6 bay at Revelstoke Generating station to add capacity to the BC Hydro system.

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Sukunka MSC addition cancelled Add a 230 kV, 45 MVAR MSC at Sukunka due to load increase. *

Mount Lehman Substation Upgrade

5/2020 .2 Replace existing 230 kV transformers with 2 – 150 MVA and add2 x 10 MVAR 25 kV capacitors.

*

West Kelowna Transmission Project (WKTP)

cancelled This project will provide a second transmission line (138 or 230 kv) to BC Hydro’sWestbank Substation (WBK), to build the supply redundancy for city of Kelowna area.

*

Southern Interior Series Compensation Project (SISC)

4/2025 .2 The project is to add one 500 kV – 250 MVAR switchable shunt capacitor at Nicola and series capacitor (50% compensation) on 5L98 transmission line from Nicola to Vaseux Lake. This project is a network reinforcement, tied to REV G6.

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Peace Canyon 5RX1 Replacement

4/2024 .2 As part of the Peace Canyon to Kelly Lake reinforcement in conjunction with the in-service of Site C, single pole tripping and reclosing (SPR) will be required for 5L3 and 5L7 to improve system performance during planned or forced outage of 5L4. To achieve SPR on 5L3 and 5L7, following works are required:Replace the existing 135 MVAR fixed line reactor on 5L3 at PCN with a 65 MVAR reactorwith a neutral reactor for acceptable SPR performance.

*

Add Series Compensation on 5L1, 5L2, 5L3 & 5L7

4/2024 .2 Construct a new series capacitor station at or near Azu Mountain (~98 km South of GMS, 1/3rd of GMS-WSN) as follows to provide 32.5% series compensation on 5L1 and 5L2, and 65% compensation on 5L3.

Construct a new series capacitor station at or near Bear Lake (~98 km North of WSN, 2/3rd of GMS-WSN) as follows to provide 32.5% series compensation on 5L1 and 5L2, and 65% series compensation on 5L7.

*

Add Series Compensation on 5L11, 5L12, & 5L13 In the Middle of WSN-MLS section

500 4/2024 .2 Install three 500 kV series capacitors in the middle of WSN-MLS section on 5L11, 5L12 and 5L13.Reduce series compensation on 5L11, 5L12 & 5L13 and increase nominal current rating of the series capacitor.

*

Vancouver Island Shunt Reactor Addition at Pike Lake

245 4/2018 .2 Transmission System Planning recommends the installation of a 75 MVAR, 245 kVswitchable shunt reactor at Pike Lake (PIK) to control the high voltage.

*

Transmission Lines Thermal Upgrade

200/300 2018/2019 .2 Transmission Lines Upgrade to In Service Date2L75 – Fleetwood x McLellan 90 deg.C Oct. 20182L76 – McLellan x Mount Lehman 90 deg.C Oct. 20182L77 – Clayburn x Atchelitz 90 deg.C Oct. 20182L90 – Bridge R. Terminal x Kelly 90 deg.C Mar. 20193L14 – BR #2 x Bridge R. Terminal 90 deg.C Oct. 20183L15 – BR #1 x Bridge R. Terminal 90 deg.C Oct. 2018

*

Transformers Addition for System Reinforcement

200/300 2016-2081

.2 Transformer MVA In Service DateBear Mountain T2 – 230/138/12.6 150 Nov. 2018Bridge River T1 & T2 – 360/13.8 133 Oct. 2017Cheekye T4 – 230/138 168 Feb. 2017Horne Payne T7 & T8 – 230/25.2 150 Oct.. 2018Arnott T11 – 230/25 150 In Service

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North Cross Cascade 500 kV Line Project

500 Cancelled .05 Consisting of a Chief Joe – Monroe 500 kV line, this project is associated with load service and is on hold until load growth supports construction.

Berhanu Tesema360-619-6819

(BPA)

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Lower Valley Area Reinforcement Project

345/138/115 3/2018 1 A 345/161-kV transformer at PacifiCorp’s (PAC) Goshen Substation currently serves the Lower Valley area. Three transmission lines serve load out of Goshen. The Goshen-Drummond 161-kV line serves mostly Fall River loads and provides back-up service to Lower Valley. The Goshen- Swan Valley 161-kV line serves most of the Lower Valley load. The Goshen-Palisades 115-kV line serves the Palisades Generating Plant and some Lower Valley load.BPA constructed a second Swan Valley-Teton line in 2000 and upgraded the Goshen-Drummond line to 161-kV in 2002. These upgrades increased the reliability of the Fall River system and helped support load growth in the Jackson Hole area, but did not increase the transmission capability to the southern part of Lower Valley’s system. Capacitor banks have been installed at Targhee, Tincup, Teton, and Madison.PAC has constructed a new 345/138-kV Three Mile Knoll Substation a couple of miles north of their existing Caribou switching station. This new substation includes a new 345-kV interconnection with Idaho Power. Idaho Power’s Bridger-Goshen 345-kV line is looped into the new Three Mile Knoll 345/138-kV Substation which includes two new 345/138-kV, 650 MVA transformers. For the Lower Valley Area reinforcement Project, BPA will construct Hooper Springs 200 MVA 138/115-kV Substation adjacent to PAC's Three Mile Knoll Substation.

Larry Furumasu360-619-6851

(BPA)

I-5 Corridor Reinforcement Project

500 2021 1.5 1100-1400 MW

This purpose of this project is to increase the transfer capability of the I-5 Corridor in the vicinity of Southwest Washington and Northwest Oregon. This load service area includes the cities of Portland, Oregon and Vancouver, Washington, which include high concentrations of industrial, commercial, and residential load. The generating resources serving this area are a mix of hydro and thermal plants.This proposed project includes a new 500 kV transmission line (approximately 70 miles) between Castle Rock, Washington and Troutdale, Oregon. This would require the construction of a new 500 KV switching station in the vicinity of Castle Rock Washington and the expansion of BPA's Troutdale Substation near Troutdale, Oregon.The project is projected to increase capacity by approximately 1100 to 1400 MW on the South of Allston path.

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Raver 500/230 kV Transformer

500/230 2018 1 This purpose of this project is to improve load service reliability to the Puget Sound area and Northern Intertie. The Puget Sound and Northern Intertie (PSANI) area transmission system is a winter peaking system that primarily consists of the interconnected systems of BPA, Puget Sound Energy (PSE), Seattle City Light (SCL), Snohomish PUD (SPUD), Tacoma Power Utilities (TPU), and British Columbia Transmission Company (BCTC), which serve Seattle, Tacoma, Olympia, and surrounding areas.The Puget Sound Area is a highly congested network due to large concentrations of load and varying local generation patterns, which are further stressed by transfer levels between the US and Canada on the Northern Intertie. Winter peak loads are typically the worst, combined with lower local generation patterns and high exports to Canada. Through a joint Columbia Grid study effort, several system fixes have been agreed to by BPA, SCL, and PSE. They include several 115kV and 230kV PSE and

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(BPA)

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SCL line upgrades, a BPA RAS upgrade and a new BPA 500/230kV transformer. The PSANI Reinforcements projects are scheduled to be completed in full by fall 2018. The Raver 500/230kV transformer addition is scheduled for completion in fall 2016.The most limiting outage for the South Puget Sound area is a common corridor N-2 Tacoma- Raver #2 and Raver-Covington #1, which results in loss of two 500/230kV banks in the area. Other N-2 common corridor outages result in a loss of two 500/230kV banks either at Tacoma, Covington, or Maple Valley substations and cause severe loading on the remaining transformer banks. Once the Raver 500/230kV transformer addition is completed, the severity of these N-2 outages will be greatly reduced, mitigating overloads, and resulting in greater reliability to load service and operational flexibility for the Southern Puget Sound Area. The project also helps to reduce the risk of curtailment or redispatch events in the Puget Sound Area for certain outage conditions.The plan of service is to install a 1300 MVA transformer at Raver substation. A new 230kV substation will be developed adjacent to the existing 500kV substation. The high side of the new transformer will terminate at Raver 500 KV. The Tacoma-Raver #1 and #2 500 KV lines are currently jumpered together and operated as double circuit 500kV for about 10 miles from Raver until it reaches Covington substation. The corridor for both circuits runs adjacent to Covington 230kV station and in the same corridor as the Raver-Covington #1 and #2 500 KV circuits. The project will reconfigure the Tacoma-Raver 500 KV lines by removing jumpers and reterminating the Tacoma-Raver #2 circuit into Covington 230 KV and Raver 230 KV Substations. The Tacoma-Raver #2 line will be renamed and operated as the Raver-Covington #3 230 KV line. The plan of service also requires reconfiguring the Covington 230 KV bus, adding a new sectionalizing breaker and 2 bus tie breakers.

Schultz-Raver #3 & #4 500 Series Capacitors Project

500 2021 .5 The purpose of this project is to increase transfer capability across the West of Cascades North Path and provide increased load service to the Puget Sound area.This project adds 500 kV series capacitors at Schultz Substation on the Schultz-Raver 500 kV #3 and the Schultz-Raver 500 kV #4 lines.

Berhanu Tesema(360) 619-6819

(BPA)

PDCI Uprate Project In-Service .5 3800 MW The Pacific DC Intertie (PDCI) provides a direct current (DC) intertie between The Dalles Oregon, and Los Angeles, CA. The current PDCI is rated at 3100 MW.

The PDCI Uprate project would increase the capacity by 700 MW from 3100 MW to 3800 MW. This project replaces the convertors at the Celilo HVDC terminal and re-conductors a small section of the DC transmission line. To reach the full 3800 MW will require the southern partner (LA Department of Water and Power) will need to reinforce the AC system on the southern end, upgrade some DC line sections, and make minor changes to their terminal equipment.

Kyle Kohne360-619-6839

(BPA)

John Day Substation – Golden Hills 200 MW (G0099-2)

200 In-Service .5 John Day Substation is a major 500 KV switching station east of The Dalles Oregon. It serves as the northern terminus of the California-Oregon AC Intertie (COI). It integrates the generation from the US Corp of Engineers John Day Dam. It the next major 500 KV substation west of Slatt Substation. In 2007, a 230 KV yard was added

Chuck Matthews360-619-6833

(BPA)

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to interconnect Portland General Electric's (PGE) 400 MW Bigelow Canyon wind project. PGE sold 200 MW of their original 600 MW project to BP Alternative Energy. This remaining 200 MW is a wind generation project calledGolden Hills.

Shepherds Flat Wind Phase 1 (aka North Hulburt Wind) (G0118 and G0291)

Phase1 – 2662 – 1903 - 190

In-Service .05 G0118 and G0291 are Shepherds Flat. It is being commissioned in 3 phases: Phase 1 (266 MW) energized in 12/1/2011. Phase 1 is called North Hulburt. Phase 2 (190 MW) is planned for 2012, and Phase 3 (190 MW) for 2013. The LGIA has been executed and we are planning the first synchronization for July 15, 2011.

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Montague I 202 Cancelled .05 The generation project has executed or is in the process of executing a Large Generation Interconnection Agreement (LGIA) with BPA. Technical interconnection studies can be obtained by signing a non-disclosure agreement with BPA.

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Lower Snake Wind 341 In-Service .05 The generation project has executed or is in the process of executing a Large Generation Interconnection Agreement (LGIA) with BPA. Technical interconnection studies can be obtained by signing a non-disclosure agreement with BPA.

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Miller Ranch Wind 150 Canceled .05 The generation project has executed or is in the process of executing a Large Generation Interconnection Agreement (LGIA) with BPA. Technical interconnection studies can be obtained by signing a non-disclosure agreement with BPA.

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Golden Hills Wind 200 In-Service .05 The generation project has executed or is in the process of executing a Large Generation Interconnection Agreement (LGIA) with BPA. Technical interconnection studies can be obtained by signing a non-disclosure agreement with BPA.

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Montana to Washington 500 Cancelled .5 In 2010, Bonneville Power Administration (BPA) conducted a Network Open Season (NOS) to determine projects needed for requests for long-term firm transmission service. During the NOS process, entities requested the use of BPA's transmission system to transmit their power.

The studies found that there was not enough available transmission capacity to accommodate all requests for long-term service from BPA's Garrison Substation in Western Montana to load centers west of the Cascades and to market hubs serving the entire Northwest power market. Wind generation facilities built and proposed in the region have greatly increased the amount of planned generation in Montana seeking load and markets in the Northwest. As a result, BPA is proposing several reinforcements on BPA's transmission system at Garrison, Hot Springs, Bell, Dworshak, and Hatwai Substations.

Additionally, reconductoring is being proposed totaling 12 miles on the Dworshak-Taft No. 1 500-kilovolt (kV) line and a new series compensation substation is being proposed along the Garrison-Taft No. 1 and No. 2 500-kV lines, both of which would allow BPA to accommodate the requests for transmission service in this area. These

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reinforcements would increase the firm east-to-west transfer capability of the West of Garrison and West of Hatwai paths by primarily increasing the series compensation in existing 500-kV lines in the area.

Longview area 230/115 kV transformer addition

230/115 2021 .2 This project adds a 230/115 kV transformer addition in the Longview area. It may be possible to accomplish this project by re-strapping an existing 230/69 kV transformer bank to 230/115 kV operation. This project will maintain reliable load service to the Longview area.

Kendall Rydell 360-619-6825

(BPA)

Northern Mid-Columbia Area Project

230 5/2019 .1 This is a joint project between BPA, Grant Public Utility District (PUD), Douglas PUD, and Chelan PUD. This project will result in a new Columbia Rapids 230 kV line.

Chuck Matthews360-619-6833

(BPA)

McNary 500/230 kV Transformer Addition Project

500/230 12/2017 This project has two parts. The first part adds a 500/230 kV transformer (1428MVA) at McNary Substation. The second part adds current limiting reactors (5 ohms) in series with the 230 kV bus sectionalizing breaker between bus sections one and two at McNary. This project is required to reliably integrate generation in the McNary area

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Portland General Electric Coarty Combined Combustion Turbine (446 MW) and Carty Increment (36 MW)

482 MW

In-service Portland General Electric (PGE) submitted two requests to interconnect its proposed CCCT generating plant project to the BPA transmission system. The first request is for a maximum of 464 MW was submitted and entered into BPA request queue at G0380. The second request is for 36 MW and is G0457. The point of interconnection is at BPA’s Slatt Substation. The project is located in Morrow County, Oregon about 13 miles southwest of Boardman, Oregon and about one miles west of PGE’s Boardman plant. These interconnection requests have signed serviceagreements with BPA.

The new 500 MW request will accommodate the construction of a new 500 kV substation named Grasslands and a new generating project referred to as Carty. PGE will interconnect to BPA’s Slatt 500 kV substation via PGE’s existing Boardman-Slatt 500 kV transmission line.

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Slatt Series Capacitor Addition and bakeove Series Compensation Upgrade

500 2019 .5 This project involves adding a new 14 ohm series capacitor at Slatt substation in the Slatt – Buckley 500 kV line and upgrading the existing series capacitors at Bakeoven in both John Day – Grizzly #1 and #2 500 kV lines by reducing the size from 25 ohms to 21.25 ohms. This project is needed to provide interconnection capacity for new large load addition requests in the Central Oregon area.

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John Day – Big Eddy 500 kV line #1 reconductor

500 2018 .5 The purpose of the John Day – Big Eddy 500KV line # 1 reconductor is to replace the existing 2 – 1780 ACSR Chukar conductor which is past its service life. The conductor will be replaced with a 2-1780 ACSR Chukar conductor. Also any broken marker balls will be replace and ground wire will be installed at John Day, Big Eddy and The Deschutes river crossing.

Jenny Brockway360-619-6816

(BPA)

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Douglas-Rapids 230 kV Transmission Line

230 In-Service 21 Douglas County PUD is constructing a new 13-mile, 230-kV transmission line to connect its Douglas Switchyard with its Rapids Switchyard. The conductor will be 1590 ACSR/TW and is expected to have a Summer rating of 589.5 MVA, a Winter rating of 766.8 MVA, an Autumn rating of 687.9 MVA, and a Spring rating of 671.6 MVA. A new 230/115-kV transformer will be installed at Rapids Switchyard with expected ratings of 200 MVA (ONAN) 55° C, 266 MVA (ONAF) 55° C, 333 MVA (ONAF) 55° C, and 373 MVA (ONAF) 65° C. The new 230-kV circuit breakers at Douglas Switchyard and Rapids Switchyard will be rated for 3000 A of continuous current. The new 230-kV breaker disconnect switches at Douglas Switchyard will be rated for 3000 A of continuous current and the 230-kV line disconnect switches at Douglas Switchyard and Rapids Switchyard will be rated for 2000 A of continuous current.The new transmission line is planned to be in operation in April, 2014.The project is currently under construction and is tentatively scheduled for completion in April, 2014. The transmission line is complete, and the remaining work is to finish installing the transformer at Rapids Switchyard.

Dennis Baker509-881-2234

(DCPUD)

Rapids-Columbia 230-kV Transmission Line

230 2019 57 Douglas County PUD is constructing a new 230-kV transmission line to connect its Rapids Switchyard with BPA’s Columbia Substation. The conductor will be 1590 ACSR/TW and is expected to have a Summer rating of 438 MVA, a Winter rating of 591 MVA, and a Spring/Autumn rating of 512 MVA. The new circuit breaker at Rapids Switchyard will be rated for 3000 A of continuous current. The new line disconnect switch at Rapids Switchyard will be rated for 2000 A of continuous current.

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Columbia-Larson 230 kV line

230 In-Service 1.0 This project will involve in construction of a new 30-mile 2-1272 ACSR 230 kV line from Columbia to Rocky Ford, open the existing Larson-Rocky Ford 230 kV line at Rocky Ford during normal conditions, then tie the new line to the existing Larson-Rocky Ford circuit, making a new Columbia-Larson 230 kV line. The purpose of this project is to provide additional transmission capacity to serve projected load growths. The project has been publicly announced and is scheduled to be in-service in early CY 2014.

Ken Che(509) 754-5033

(GCPUD)

Grayson Repower Project Non- BES .2 Glen is planning to repower its existing Grayson Power Plant. The repowering project will replace the decades old boiler and gas turbine units with more efficient and reliable units. In February 2014, as required by FAC-002, we notified LADWP of our repowering project plan,

Ramon Abueg818-548-3921

(GLEN)

Warnerville Substation upgrade

230 2/2018 HHWP will replace three existing 230/115 kV transformer banks consisting of one 150 MVA transformer and two 75 MVA transformers with two 300 MVA 230/115 kV transformers. The project includes upgrading the Warnerville substation bus work as necessary, replacing all circuit breakers and isolation switches, and replacing all relay protection at the substation. HHWP expects to begin construction in May 2017.

Margaret Hannaford

209-989-2063(HHWP)

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King 230/138 kV Project 230/138 In-Service .1 A new 230/138 kV 300 MVA transformer will be installed in the existing King 138 kV substation to accommodate approximately 135 – 150 MW of additional wind generation in the Hagerman area. The King substation will be interconnected to the 230 kV transmission system by looping in-and-out the existing Midpoint-Dram 230 kV line. Because the wind generation projects, which the King 230/138 kV project is to accommodate, have been slow in their development, the in-service date has been deferred to spring 2012. This project has no significant impact on the WECC transmission system.

Mark D. Hanson208-388-2253

(IPC)

Hemingway – Boardman Transmission Project

500 2017 2 1000 MW 3Idaho Power’s 2015 Integrated Resource Plan, a biennially-produced 20-year resource plan for meeting our electric service obligation, identified Pacific Northwest generation resources as one component of the preferred resource portfolio. Requirements of Idaho Power’s wholesale transmission customers are also increasing. The existing transmission system connecting Idaho Power to the Pacific Northwest is fully subscribed during high-demand periods. To meet the need for more transmission capacity with the associated improvement in system reliability, Idaho Power plans to build a 500 kV transmission line from southern Idaho to northeast Oregon.The plan of service is to construct a 500 kV transmission line from Hemingway station in southwestern Idaho to the proposed Longhorn station near Boardman, Oregon. The route selected in the Bureau of Land Management’s Final Environmental Impact Statement (FEIS) for the Boardman to Hemingway Transmission Line (B2H) Project is 290 miles in total length. The route selected in the FEIS is shown in Figure 1. The B2H Project scheduled to be in-service in 2023 or later. See the project website (boardmantohemingway.com) for additional information.Path 14 transfer capacity ratings with the B2H Project facilities are expected to increase to 2250 MW west to east (a 1050 MW increase) and a 3400 MW east to west (a 1000 MW increase). Project facilities are listed below:Hemingway-Boardman 500 kV line, 290 miles with approximately 50% series compensation (split equally at each end); the western termination will be at the Longhorn switching station near the Boardman, OregonHemingway 500 kV Line Terminal with Shunt Reactors and Series CapacitorLonghorn 500 kV Line Terminal with Shunt Reactors and Series Capacitor and 150 Mvar, 500 kV Shunt CapacitorHemingway-Bowmont #2 230 kV line, 13 miles with single 1590 MCM ACSR “Lapwing” conductorBowmont-Hubbard 230 kV line, 16 miles with single 1590 MCM ACSR “Lapwing” conductor

Idaho Power 2017 WECC Annual Supplemental Progress ReportThe B2H Project will conform to the NERC TPL-001-4 Standard and other corresponding regional System Performance requirements at the time, if any, and the WECC “Overview of Policies and Procedures for Project Coordination Review, Project Rating Review, and Progress Reports.”

Eric Bakie208-388-5677

(IPC)

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A B2H Project Comprehensive Progress Report (Phase I) was released for comment in November 2008 and was granted Phase II status in March 2009. Idaho Power began the Phase II study process in 2011; the initial kick-off project review work group meeting was held on June 22, 2011, and the second project review group meeting was held on November 15, 2011.The third project review group meeting was held on March 22, 2012. On August 10, 2012, a conference call/webinar was held to solicit comments on the initial Phase II draft report. In August 2012, Idaho Power submitted the Idaho-Northwest Up-rate, Hemingway-Boardman 500 kV Transmission Project Phase II Report to WECC and was granted Phase III status on November 29, 2012 with an Accepted Rating of 2250 MW west-to-east and 3400 MW east-to-west.On December 19, 2014, the BLM released the Draft Environmental Impact Statement (DEIS) for the Boardman to Hemingway Transmission Line Project (B2H). The DEIS reflects the analysis of the potential effects of the Proposed Action and alternatives, including a no-action alternative.On November 25, 2016, the BLM released the Final Environmental Impact Statement (FEIS) for the Boardman to Hemingway Transmission Line Project (B2H). The FEIS identifies the Agency Preferred Alternative line route.The BLM expects to release a Record of Decision (ROD) for the B2H project in the first quarter of 2017.

Midpoint T232 230/138 kV Transformer Addition Project

230/138 10/2020 .1 A second 230/138 kV 200 MVA transformer will be installed at the Midpoint substation due to anticipated load growth in the Magic Valley area. The scheduled/projected in-service date is June 2020. This project is intended for load service and has no significant impact on the WECC transmission system.

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Borah-Populus 345kV Ckt #1 Series Capacitor Replacement Project

345 2017 .3 This project involves replacing the Borah 345kV C341 series capacitor (originally installed in 1980) with a new 345kV series capacitor bank. The compensating impedance of the new series capacitor bank will remain nearly the same as the existing bank. The ampacity rating of the new series capacitor bank is increased to make the line conductor the limiting element of the 345kV transmission facility. The project in-service date is planned for summer 2017. This project is intended to replace aging infrastructure and has no significant impact on the WECC transmission system.

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Kinport-Populus 345kV Series Capacitor Replacement Project

345 2018 .3 This project involves replacing the Kinport 345kV C341 series capacitor (originally installed in 1980) with a new 345kV series capacitor bank. The compensating impedance of the new series capacitor bank will remain nearly the same as the existing bank. The ampacity rating of the new series capacitor bank is increased to make the line conductor the limiting element of the 345kV transmission facility. The project in-service date is planned for summer 2018. This project is intended to replace aging infrastructure and has no significant impact on the WECC transmission system.

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Cloverdale 230/138kV Transformer Project

230/138 2020 .2 This project involves tapping the Boise Bench – Locust 230kV line and adding a 230/138kV transformer at Cloverdale substation. This project is intended to resolve system performance issues identified in Idaho Power’s Long Term Planning

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Assessments for multiple Boise Bench breaker failure outage scenarios. This project is intended to resolve local TPL issues and has no significant impact on the WECC transmission system. The planned in-service date is June 2020.

Cloverdale – Hubbard 230kV Transmission Line Project

230 2020 .2 This project involves construction of a new 230kV transmission line between Cloverdale substation and Hubbard substation. This project is intended to resolve system performance issues identified in Idaho Power’s Long Term Planning Assessments for double line loss of Boise Bench-Wyee 138kV and Boise Bench-Locust 230kV lines. This project is intended to resolve local TPL issues and has no significant impact on the WECC transmission system. The planned in-service date is June 2020.

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King-Wood River 138kV Transmission Line Rebuild

138 2017 .2 This project involves rebuilding the King-Wood River 138kV transmission line with a bigger line conductor. The project is intended to improve reliability and the system voltage profile for Idaho Power customers located in the Wood River Valley during N-1 loss of the Midpoint-Wood River 138kV line. The planned in-service date is end of 2017. This project is intended for load service and has no significant impact on the WECC transmission system.

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Willis-Lansing-Star 138kV Transmission Line Project

138 2017 .2 This project involves converting Lansing substation from a 69kV station to a 138kV station to improve reliability. The Lansing 138kV substation will be sourced radial from the Star 138kV substation with a Star-Lansing 138kV line with a planned in-service date of December 2017. Conversion from 138kV radial load service to 138kV looped load service to improve reliability is planned for completion by June 2018 by adding a Willis-Lansing 138kV line segment. This project is intended for load service and has no significant impact on the WECC transmission system.

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Pearl Transmission Substation

230 Cancelled .3 Because of the addition of the Langley Gulch Generation Project in the Treasure Valley (see Langley Gulch Generation Project above) and developing the Hemingway 500/230 kV station and its associated 230 kV transmission integration into the Treasure Valley (see Hemingway-Boardman Transmission Project above), the Pearl Transmission Substation project has been deferred beyond Idayho Power’s 10-year planning horizon..

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Lucky Corridor Transmission Project

230/115 2016 2 850 MW Lucky Corridor, LLC provided an initial progress report on December 19, 2012. Lucky Corridor, LLC is developing a transmission project to deliver renewable and gas generation from northeastern New Mexico to markets in the west. The Lucky Corridor Project is designed as a 230 KV upgrade to an existing 93 mile 115 KV transmission line between Gladstone and Taos substations. The new line will use the existing 115 KV rights of way and will be constructed as a double circuit 230 kVtransmission line. Also included in the Project are upgrades to the Taos to Ojo 345 KV line and required lower voltage lines.

Lynn Chapman Greene

(303) 681-3073 Lucky Corridor

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500 kV Upgrade Project 500 Withdrawn 2 3000 3 500 kV Upgrade: Series compensation system will be increased as needed toachieve new capacity. A Supplemental Progress report is attached showingnew capacity as 3000 MW. The earliest operation date is 2018

John Leland406-497-3383

(NWMT)

Path 18 Upgrade 230 In-Service 2 383 MW 3 Path 18 Upgrade: Path 18, Montana to Idaho, will be upgraded by 46 MW.The new capacity on this 230 kV line will be 383 MW. A SupplementalProgress report is attached. The earliest operation date is 2014.

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WKN Wind Project 396 230 Withdrawn 2 WKN: The Feasibility, System Impact, and Facility Studies have beencompleted. An LGIA was signed on December 29, 2010. A SupplementalProgress Report is attached for this 396 MW wind project. Project issuspended per customer's request.

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Jawbone Wind Project 460 230 Withdrawn 2 Jawbone Wind: The Feasibility, System Impact, and Facility Studies havebeen completed. An LGIA was signed on November 5, 2012. ASupplemental Progress Report is attached for this 460 MW wind project.Project is suspended per customer's request.

Mountain States Transmission Intertie Project

500 Canceled 3 1500 2 The Regional Planning Project Review for this project was begun on 5/17/07. The proposed project consists of a new 500 kV line between southwestern Montana and southeastern Idaho. The main purposes for the project will be to meet requests for transmission service from customers and relieve constraints on the high-voltage transmission system in the region. The Regional Planning Project Review Report for this project was distributed for review on 2/14/08 with a review deadline of 3/14/08. On 4/23/08, the MSTI project successfully completed Regional Planning. Currently this project is in Phase II of the WECC 3-Phase Rating Process.

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Orion Wind Resources 300.9 9/1/2017 1 177 General Electric 1.70 MW wind turbine generators *

Buffalo Trail Wind 250 10/1/18 1 125 General Electric 2 MW wind turbine generators *

TOT 4A Voltage Support Project

230 In-Service 1.1 The following facilities have been identified for Wyoming voltage support: Atlantic City 230 kV, 15 MVAr Capacitor (In-service: October 2010) Riverton 230 kV, 30 MVAr Capacitor (In-service: August 2010) Midwest 230 kV, 30 MVAr Capacitor (In-service: October 2010) Dynamic voltage control in the Miners Area has been superseded by

Standpipe 230 KV Synchronous Condenser project-Projected in-service date for (2016)

Craig Quist801-220-4264

(PAC)

Wallula to McNary 230 kV (#2) Transmission Line

230 12/2018 1 2 The Wallula to McNary 230 kV #2 line would be a single circuit transmission line with line terminals at Wallula and McNary substations.

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(December 2017)Phase 2 studies are being performed; when complete they will be reviewed by the project review group.

This project has impacts to other regional facilities most notably BPA as the project has a terminal at BPA’s McNary Substation. Phase 2 studies are being performed and when complete will be reviewed by the project review group.

Whetstone 230/115 kV Substation

230/115 2015 .1 Construct new 230 to 115 kV in the White City Oregon vicinity with a 250 MVA transformer. This substation will tap PacifiCorp’s existing 230 kV line between Meridian and Grants Pass Substations. The project is intended to provide load service redundancy.

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Current Creek 550 2016 .05 Planned new generation.

Union Gap 230/115 kVTransformer Addition

230/115 2017 .1 250 MVA This project will construct a third 250 MVA transformer at Union Gap. “

Vantage-Pomona Heights 230 kV Line

230 12/2018 1 This project will construct a new 230kV line between the Vantage and Pomona Heights 230kV buses in Washington State.

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Gateway Central Transmission Project

500/345/138 2021 1.2 Extending from southeast Idaho into northern Utah, the Populus-to-Terminal transmission line adds a new double-circuit, 345 kilovolt transmission line stretching approximately 135 miles from the Populus Substation built near Downey, Idaho, to the Terminal substation near the Salt Lake City airport. The Populus-to-Terminal project was placed in service November 19, 2010.

The Mona-to-Oquirrh transmission line originates at the new Clover substation near the Mona substation in Juab County, and adds 35 miles of double circuit 345 kilovolt and 65 miles of single circuit 500 kilovolt line (operated at 345 kilovolts), running north to the Oquirrh substation in West Jordan. The in-service date for this line was May 17, 2013

The line will be located in an existing high-voltage transmission line corridor. It will run from the Oquirrh substation near 10200 South and 5600 West in West Jordan, north to the Terminal substation, located due south of the Salt Lake City international airport. This section of new transmission will link together other new transmission sections – Mona-to-Oquirrh and Populusto-Terminal – to complete the Gateway Central portion of the Energy Gateway Transmission Expansion Project. The in-service date for this line

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Gateway West Transmission Project

500/230 2020-2024

6 Idaho Power and PacifiCorp (Rocky Mountain Power) jointly announced the Gateway West project in May 2007, to build and operate approximately 900 miles of new high-voltage transmission lines between the Windstar substation near Glenrock, Wyoming and the Hemingway substation near Melba, Idaho.

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After completing Regional Planning and initial path rating studies February 6, 2009, Idaho Power was granted Phase 2 path rating status for the Gateway West Transmission Project, which included Stage 1 facilities needed to meet Idaho Power’s and PacifiCorp’s long-term regulatory requirement to serve loads, and Stage 2 facilities which were intended to provide extra transmission system capacity if commercially supported by other third parties requestors.The Gateway West – Stage 1 project will include approximately 150 miles of 230 kilovolt (kV) lines in Wyoming and approximately 800 miles of 500 kV lines in Wyoming and Idaho. Gateway West – Stage 2 transmission facilities primarily consist of a second set of 500 kV circuits from southern Wyoming to western Idaho.As of March 30, 2010, Gateway West and Gateway South combined project review meeting participants approved the Gateway Phase 2 Study Plan and agreed that Gateway transmission segments could be grouped into two logical project stages [1 and 2], which would be evaluated separately by WECC Phase 2 study group (or sub groups). Additionally, it was agreed that incremental transmission limitations for transmission segments that are added between stages, will be addressed via SOL (System Operating Limit) studies. [This same process was previously followed and successfully demonstrated by Bonneville Power Administration and Avista for theWest of Hatwai Expansion project.]PacifiCorp reported in the 2011 Annual Progress Report submission that the third party requests and financial commitments that are necessary to support the Energy Gateway – Stage 2 facilities have not materialized. Therefore, PacifiCorp indicated that it would continue to pursue WECC path ratings for Stage 1 of Energy Gateway only at that time, and will not further pursue ratings for Stage 2 facilities. This Energy Gateway Project status update was also reported to WECC Technical Studies Subcommittee at the April 20-22, 2011, meeting in Westminster, Colorado. For Gateway West – Stage 1 transmission paths located west of Populus [specifically Borah West and Midpoint West], Idaho Power was the project sponsor for each of the path ratings studied; additionally for Gateway West transmission paths located east of Populus [specifically TOT 4A, Aeolus West, Path C and Bridger/Anticline West], PacifiCorp was the project sponsor for the path ratings studied. At the completion of the Phase 2 path rating process, TOT 4A transmission path was granted Phase 3 status December 13, 2010; Aeolus West, Bridger/Anticline West and Path C transmission paths were granted Phase 3 status January 5, 2011; and Borah West and Midpoint West transmission paths were granted Phase 3 status July 21, 2011.The federal National Environmental Policy Act (NEPA) permitting process began in April 2007 when the companies filed the application with the Bureau of Land Management (BLM). Public Scoping meetings followed in June 2008. The BLM published its draft EIS July 29, 2011, and a year later in August 2012, identified the agency-preferred alternative routes for Gateway West.In following the NEPA process, the BLM has completed the Environmental Impact Statement (EIS) for the Gateway West project. The BLM released its final EIS April 26, 2013, followed by the Record of Decision (ROD) November 14, 2013, providing a right-of-way grant for most of the project. The agency chose to defer its decision on the western-most portion of the project located in Idaho in order to perform additional review of the Morley Nelson Snake River Birds of Prey Conservation Area. In

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eptember 2014, the BLM announced their intent to conduct a supplemental EIS for the final two segments. A draft supplemental EIS was published in March 2016 and a final ROD was issued January 19, 2017.Based on the agreement between PacifiCorp and Idaho Power, executed in early 2012, PacifiCorp will assume responsibility for sponsoring all Gateway West transmission facilities through the NEPA process and through the project construction agreement phase.

Gateway South 500 kV Project

500 2015-2024

4 2 As part of Energy Gateway Transmission Expansion, PacifiCorp (Rocky Mountain Power) is planning to build a new high-voltage transmission line, known as Gateway South, extending approximately 400 miles from the Aeolus substation in southeastern Wyoming into the new Clover substation near Mona, Utah and 160 miles from Sigurd-to-Red Butte. After completing Regional Planning and initial path rating studies February 6, 2009, PacifiCorp was granted Phase 2 path rating status for the Gateway South Transmission Project, which included Stage 1 facilities needed to meet PacifiCorp’s long-term regulatory requirement to serve loads, and Stage 2 facilities which were intended to provide extra capacity if commercially supported by equity partners and other third parties. The Gateway South – Stage 1 transmission facilities include a 500 kilovolt (kV) transmission line from the proposed Aeolus substation in southeast Wyoming (constructed as part of the Gateway West Project) to the Clover substation in central Utah, and a second 345 kV transmission line from the Sigurd substation near Richfield, Utah to the Red Butte substation near Central, Utah in southwestern Utah. Gateway South – Stage 2 transmission facilities primarily consist of a second 500 kV circuit from Aeolus substation to Clover substation and a 500 kV segment from Clover substation to the Crystal substation in southern Nevada. At the March 30, 2010, Gateway West and Gateway South combined project review meetingparticipants approved the Gateway Phase 2 Study Plan and greed that Gateway transmission segments could be grouped into two logical project stages [1 and 2], which would be evaluated separately by WECC Phase 2 study group (or sub groups). Additionally, it was agreed that incremental transmission limitations for transmission segments that are added between stages, will be addressed via SOL (System Operating Limit) studies. PacifiCorp reported the 2011 Annual Progress Report submission that the third party financial commitments that are necessary to support the Energy Gateway – Stage 2 facilities have not materialized. Therefore, PacifiCorp indicated that it would continue to pursue WECC path ratings for Stage 1 of Energy Gateway only at that time, and will not further pursue ratings for Stage 2 facilities. This Energy Gateway Project status update was also reported to the WECCTechnical Studies Subcommittee at the April 20-22, 2011, meeting in Westminster, Colorado. For the transmission paths associated with Gateway South – Stage 1, specifically Aeolus South and TOT 2B/2C, PacifiCorp was the project sponsor for each of the path ratings studied. At the completion of the Phase 2 path rating process, Aeolus South transmission path was granted Phase 3 status on December 16, 2010, while the TOT 2B/2C transmission paths was granted Phase 3 status on June 21, 2011.

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The Bureau of Land Management (BLM) announced the start of Public Scoping for the project on April 1, 2011. Public Scoping continued through June 30, 2011, with meetings held throughout the proposed route. During this time the BLM obtained comments from interested parties on the project. On July 24, 2013, the BLM announced its Preliminary Agency Preferred Route for the project. A draft Environmental Impact Study (EIS) was published by the BLM February 21, 2014.A final EIS was published in May 2016 and a Record of Decision was signed ecember 13, 2016.

Syracuse –Install 345/138 kV #2 Transformer

345/138 2017 .1 Proposed project to install a second 700 MVA, 345/138 kV transformer at Syracuse. This will include one 345 kV circuit breaker, and at least three 138 kV circuitbreakers at the Syracuse substation. Bus work will be required at Syracuse 345 kV and 138 kV buses in order to accommodate new circuit breakers and transformer.

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Mid Valley Substation-Replace 345-138kV, 450 MVA with 700 MVA Transformers

345/138 2020 .1 Replace two 345-138kV 450MVA transformers at Mid Valley substation with 700 MVA units.

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Huntington-Mona/ 345 kV Line Series Reactor at Mona/Clover

345 2014 1 Install an 18 ohm series reactor in the Mona- Huntington 345 kV line at Mona to increase transfer capability across the “North of Sigurd/Huntington” transmission path.

A study was conducted to determine the optimum reactor size. It was determined that an 18 ohm series reactor provided the most optionality in future resource location (Huntington vs. Sigurd), while increasing the North of Huntington/Sigurd flow limits.

This project will support an increase in south to north transfers from southern to northern Utah.

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Snow Goose Project 500/230 2017 1 New 500/230kV substation tapping PacifiCorp’s Captain Jack to Klamath Co-Gen 500 kV line. The 230kV line construction will include looping the existing Klamath Falls to Malin 230kV line into the new substation. The project is only connected to PacifiCorp facilities and is intended to provide load service redundancy

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Lakeside II Transmission Network Upgrades (2014)

345 In-Service 1 Transmission of energy from the generation facility to beyond Steel Mill substation requires the installation of two new 345kV breakers and looping in of the Camp Williams – Emery 345kV line at Spanish Fork substation. Also required is a reconductoring of the 10 mile Spanish Fork – Tanner 138kV line and communication fiber to Hale substation

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Standpipe - Construct New 230kV Substation (2016)

230 Complete 1 60 MVAr Significant portions of the Standpipe project are now complete and in-service. The new 230 kilovolt (kV) substation called Standpipe is in-service near Miners substation in Wyoming. The existing 230 kV line from Freezeout to Miners to Platte is looped in and out of the new Standpipe substation to form the Freezeout to Standpipe to Platte 230 kV line. The Miners substation is now fed radially from Standpipe. Additional system changes to improve voltage stability and reliability for customers on the south central Wyoming 230 kV transmission system are in-service, including the relocationof an existing 31.7 mega volt amps - reactive (MVAr) shunt reactor from Platte to Standpipe substation, installation of a 25 MVAr capacitor bank at Lathamsubstation, and reconfiguration of the Latham 230 kV bus. Future improvements to be completed under the project include a new synchronous condenser with a steady-state capability of +65/-35 MVAr to be installed at Standpipe to provide dynamic reactive support in the region. Additionally, the project will install a special protectionscheme to trip local area wind generation for contingency conditions that result in low voltage in the Spence area of the Wyoming 230 kV system. Other future systemimprovements to be completed as part of the project include implementation of coordinated shunt reactive device controls at Latham, Platte, Standpipe, Miners, andFoote Creek.

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PacifiCorp East and West Future Generation Projects

1027 2014-2020

1Project QueueNumber/Name

Location(County, State) Status

GenerationCapacity

Lakeside II Utah, UT Under construction2014

681 MW

Carbon Carbon, UT 2015Retirement

-67 MW

Carbon Carbon, UT 2015Retirement

-105 MW

375 Carbon, WY 2020 230 MW

398-B Bonneville, ID Suspended 288 MW

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510 Coos, OR Interconnection Agreement

336.0

687 Klamath, OR Feasibility 415.8

718 Lake, OR System Impact

400.2 MW

Casper Substation-Install 230/115 MVA transformer

230/115 2015 Add a second 230-115 kV transformer at Casper substation, including expanding the 115kV bus, installing four new breakers and reconnecting the existing WAPA Casper 115kV transmission line into the new line position.

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St. George Substation- Install 345kV/138kV transformer &expand yard

2020 This project includes three related segments necessary to provide anticipated growing energy demands in Southwest Utah and to maintain the Company’s compliance with NERC and WECC reliability standards.The three segments are as follows: Red Butte Substation – ReterminateHarry Allen 345kVLine & Reactor, and Add a345kV Breaker. Construct a New 345kV Yard atSt. George Substation; Install a700 MVA 345/138 Transformer,Line Termination and TwoBreakers (one each @ 345kVand 138kV).

Table Mountain 500/230kVsubstation

500/230 2019 1 New 500/230 kV Substation tapping PacifiCorp’s Meridian to Dixonville 500 kV Line, tapping the existing Meridian-Grants Pass 230 kV line and adding a new 230 kV transmission line from the new substation to the existing Grants Pass 230 kV Substation. The project is only connected to PacifiCorp facilities and is intended to provide load service redundancy.

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Troutdale Substation, Add3- 230 kV circuit breakers

230 2016 1 This project will install 3-230 kV circuit breakers at Troutdale substation, two on the lines to PGE Gresham and Linneman Substations, and one between the two Troutdale substation busses.

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Planned Generation Interconnection Projects (PACE/PACW) – Waiver

20-100 2012-2015

3 Project Queue Location Status Generation Type

Number/Name Capacity

154 Bonneville, ID

2012 19.8 MW Wind

267-A Sweetwater, WY

2019 22 MW Wind

267-B Sweetwater, WY

n/a 22 MW Wind

267-C Sweetwater, WY

n/a 22 MW Wind

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267-D Sweetwater, WY

n/a 22 MW Wind

290-A Sweetwater, WY

n/a 100.8 MW Wind

290-B Sweetwater, WY

n/a 100.8 MW Wind

290-C Sweetwater, WY

n/a 50.4 MW Wind

313 Beaver, UT 2013 65 MW Geothermal

323-A Power, ID 2011 21.6 Wind

323-B Power, ID 2011 21.6 MW Wind

335 Converse, WY

Complete 49.6 MW Wind

367 Iron, UT n/a 172 MW Solar

384 San Juan, UT

n/a 60 MW Wind

415 Beaver, UT n/a 11 MW Thermal

420 San Juan, UT

n/a 140 MW Wind

432 Salt Lake, UT

n/a 6.3 MW Other

437 Franklin, ID n/a 0.5 MW Hydro

442 Madison, ID n/a 5.6 MW NaturalGas

450 Millard, ID n/a 50 MW Solar



457 Beaver, UT n/a 2.1 MW Solar

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459 Beaver, UT n/a 3 Mw Solar

230 Klamath, OR

2014 14 MW Geothermal

237-B Skamania, WA

suspended

25 MW Hydro

237-C Skamania, WA

suspended

25 MW Hydro

276 Umatilla, OR

2015 98.9 MW Wind

373 Klamath, OR

2012 5 MW Solar

389-B Lake, OR n/a 5 MW Solar

393 Lake, OR n/a 27 MW Geothermal

422 Yakima, WA

n/a 5 MW Solar

430 Klamath, OR

n/a 12 MW Geothermal

431 Siskiyou, CA

n/a 12 MW Geotherm

741 Klamath, OR

n/a 40 MW Solar

Goshen Spare 345/161 kV Transformer

345/161 2018 .5 Proposed project to place a spare 700 MVA, 345/161 kV transformer at the Goshen substation in Idaho.

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Red Butte Transformer 345/138 2023 .2 Proposed project to replace the current 345/138 kV 450 MVA transformer with a 700 MVA transformer. This will include upgrading the existing breakers, switches and bus to equipment rated to 3000 amps.

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Horizon Phase II Project 230/115 12/2018 0.1 PGE plans to expand the Horizon substation to a breaker-and-a half bus configuration and install a second 230/115kV bulk power transformer at Horizon substation. The installation of this transformer requires the replacement of seventeen 115kV circuit breakers at Sunset substation to mitigate fault duty concerns; a second 115kV capacitor bank will also be installed at Sunset substation to provide voltage support.

Philip Augustin503-464-7783

(PGE)

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The Horizon Phase II Project Provides a second 230kV source to the Horizon substation, and mitigates potential overload concerns to the Horizon 230/115kV transformer for base case and single and double contingencies during peak summer loading conditions. In addition, this Project mitigates potential overload risk on the local area 115kV system for double contingencies during peak summer loading conditions.PGE will construct a new 4.4 mile 230kV line segment between Horizon substation and Springville Junction. This line segment will tie into the existing St Marys-Trojan 230kV circuit, creating a Horizon-St Marys-Trojan 230kV circuit..

Pearl-Sherwood 230 kV retermination

230 6/2019(Suspend

ed)

0.1 PGE and BPA plan to re-terminate the Pearl-Sherwood 230 kV circuit (paralleled Jefferson TW) into separate breaker positions at the Pearl and Sherwood substations. In addition, this project will divide the Pearl-Sherwood section of the three-terminal McLoughlin-Pearl-Sherwood 230 kV circuit (currently paralleled between Pearl and Sherwood) into separate breaker positions at the Pearl and Sherwood substations. This will require four new 230 kV breakers, two located at BPA’s Pearl Substation and two at PGE’s Sherwood Substation. When this project is complete, there will be three Pearl-Sherwood 230 kV circuits and a McLoughlin-Pearl-Sherwood 230 kV circuit.

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Blue Lake-Gresham 230 kV Line

230 6/2019 0.1 PGE plans to construct a 6 mile transmission line from Blue Lake Substation (Troutdale, Oregon) to Gresham Substation (Gresham, Oregon). In addition, PGE will rebuild the existing 1.5 mile Blue Lake-Troutdale 230kV circuit tower line to accommodate the new Blue Lake-Troutdale #2 230kV circuit. The Blue Lake/Gresham 230kV Project mitigates potential overloads to the Gresham-Troutdale BPA 230kV circuit, the Linneman-Troutdale BPA 230kV circuit, and the Blue Lake 230/115kV transformer for double contingencies during peak summer or winter loading conditions in the Near Term Planning Horizon.This Project requires the expansion of the 230kV yard at Blue Lake substation to a six position ring bus and the addition of new breaker positions at Gresham substation and Troutdale substation.

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Trojan-Horizon 230 kV line 230 1/2015(Suspend

ed)

.3 PGE proposes to construct approximately 40 miles of new 230 kV transmission line. The project starts from an existing PGE substation adjacent to the former Trojan plant near Rainier, OR to the new proposed PGE Horizon Substation in Hillsboro, OR. PGE will utilize 28 miles of currently unused right-of-way adjacent to the existing 230 kV lines from Trojan to the Portland area. In addition to the new transmission line, the Horizon Substation will be expanded to terminate the new 230 kV line as well as the installation of a second 230/115 kV, 320 MVA auto-transformer to connect to the adjacent 115 kV PGE Sunset Substation. Also, 2.7 miles of the Sunset-Orenco 115 kV line will need to be reconductored with a 795 ACSS conductor.

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Cascade Crossing 500 kV Project

500 Canceled .7 2 PGE proposes to construct approximately 210 miles of new 500 kV transmission line. The project starts at PGE’s Coyote Springs generation plant located in the town of Boardman, OR, and ultimately terminates with the installation of a new 500/230

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kV transformer bank at PGE’s Bethel Substation located in Salem, OR. The Boardman and Coyote Springs substations will be expanded to accommodate the project. PGE will need to acquire approximately 30 miles of new ROW for the Boardman to Coyote Springs 500 kV line. After the Boardman substation the project will connect to new wind resources being developed in Gilliam and Wasco counties in Oregon. The project will parallel existing utility lines whenever possible by acquiring additional ROW for approximately 180 miles along the route into Salem, where the line will terminate at an expanded Bethel substation. On June 3, 2013, Portland General Electric suspended permitting and development of the proposed Cascade Crossing Transmission Project. Changing market conditions have created opportunities to explore lower-cost alternatives for customers and provide the needed transmission capacity for PGE with reduced environmental impacts.At this time, PGE is requesting that the “Cascade Crossing Project” be removed from the WECC Path Rating Process; PGE will no longer represent the Project in WECC planning cases.

McLoughlin 230 kV Bus Sectionalizing Breaker

230 In-Service .1 PGE plans to operate the 230 kV bus sectionalizing breaker at the McLoughlinsubstation in Oregon City Oregon in the normally open position beginning insummer 2012. This operational procedure is different from past normal systemoperation.

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Port Westward II generation 225 In-Service .1 Port Westward Unit 2 will use reciprocating engines to provide 225 megawatts of flexible peaking capacity to react to spikes in power demand and changes in power output at renewable energy generating facilities. The plant will be located adjacent to PGE’s existing natural gas-fired plants, Beaver and Port Westward, located near Clatskanie, Oregon. This project requires the reconductoring of 8 miles of the Port Westward-Trojan #1 230 kV circuit generator lead.

Harborton Reliability Project 230 6/2020 .5 PGE plans the construction of a new 230kV yard at the Harborton Substation, and the installation of a new 230/115kV bulk power transformer. Additionally Harborton’s existing 115kV yard will be rebuilt to a breaker‐and‐a half configuration.

The Harborton Reliability Project provides redundancy for the loss of PGE’s Rivergate

230/115kV bulk power transformer #1, and sectionalizes two 230kV lines from PGE’s Trojan substation.

The construction of the 230kV yard can be done on the existing Harborton site. The retermination of the two 230kV lines from Trojan requires the acquisition of a 125ft expansion to existing Right of Way.

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Carty Generation Station 440 In-Service .5 The Carty Generating Station project will use a natural gas-fired combined cycle plant to provide 440-megawatt of baseload generation. The Project will be located

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adjacent to PGE’s existing Boardman coal Plant in Morrow County near Boardman Oregon. PGE’s new Carty Generating Station will help PGE serve existing customer demand, meet additional load growth and maintain a reliable supply of power. This project requires the construction of a new three position switchyard to connect both plants to the Boardman–Slatt 500kV line.

Jefferson County 115 kV Upgrade Phase II

115 Cancelled .1 The project involves looping Clallam County’s 115 kV transmission line serving the Port Townsend Mill through PSE’s Irondale substation. The project is intended to provide backup transmission to Jefferson County. This project will not occur under PSE’s jurisdiction if Jefferson County’s municipalization of PSE’s energy delivery system becomes effective in 2013.

Peter Jones425-462-3171

(PSEI)

Pierce County Transformer Addition and Line Reroutes(2016 Waiver Request)

230/115 2018 .1 The project is to install a 230-115 kV transformer at Alderton Substation and build 8 miles of 230 kV transmission line from White River Substation to Alderton Substation, as well as re-routing 115 kV lines. PSE requested and received a waiver of significant transmission project status for this project in 2013. The project is intended to provide additional capacity to serve the projected load growth in Pierce County and surrounding areas. It has no impact to the WECC or any neighboring electric systems.

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Thurston County Transformer Addition

230/115 In-Service .1 The project is to install a 230-115 kV transformer at St. Clair Substation and build a 5-mile 230 kV transmission loop between St. Clair and the existing BPA Olympia – S. Tacoma 230 kV line. PSE requests a waiver of significant transmission project status for this project. The project is intended to provide additional capacity to serve the projected load growth in Thurston County and surrounding areas. It has no impact to the WECC or any neighboring electric systems.

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Tono Transformer Improvements

In-Service .1 546 MVA This project will involve replacement of limiting current transformers at the Tono bank. This improvement will increase capacity from the existing limit of 398 MVA up to 546 MVA. The project is intended to increase reliability for serving approximately half of the existing load in Thurston County. It has no impact to the WECC or any neighboring electric systems.

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Eastside 230 kV Transformer Addition and Line(2016 Waiver Request)

230/115 2018+ .75 This project had been titled “Lakeside Substation 230 kV Transformer Addition” in progress reports prior to 2013.The project will involve installation of a 230-115 kV transformer at an existing or future PSE Substation. This project includes new construction of 230 kV lines or rebuilding existing 115 kV lines, energizing at 230 kV to provide a source to the new transformer and adding transmission capacity. Installing this transformer will address NERC planning criteria and provide additional capacity to serve the projected load growth in north central King County and surrounding areas.The attached document, ‘Eastside Transformer Project.pdf’, shows the possible locations and associated transmission routes.

Sunitha KothapalliPSEI

425-462-3829

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ColumbiaGrid is a Subregional Planning Group in the Pacific Northwest and has open participation in its planning meetings and the Puget Sound Area Study Team (PSAST). This project has been developed by and has achieved consensus via the ColumbiaGrid PSAST, which included all the transmission owners that could be impacted by this project. The “Eastside 230 kV Transformer Addition and Line Rebuilds” project began to be studied by the PSAST in mid-2009, and was in PSE’sAnnual Progress Report last year. The most recent report is entitled “Updated Recommended Transmission Expansion Plan for the Puget Sound Area to Support Winter South-to-North Transfers”, June 17, 2011. The report recommends this project and four other transmission improvements, and is available from ColumbiaGrid www.columbiagrid.org. The requirements of project coordination review for this project have been met through the ColumbiaGrid acting as a Subregional PlanningGroup.The attached document, ‘WECC Comprehensive Project Coordination Review Letter_PSAST 2-21- 13.pdf’, describes the coordinated ColumbiaGrid study efforts. The energization date for the Eastside 230kV project has been pushed out since this review letter was written.

West Kitsap Transmission Project, Phase II(2016 Waiver Request)

230/115 2020+ .1 The project is to install a 230-115 kV transformer at Foss Corner Substation, and build a 230 kV line from Foss Corner to a future line bay position in the BPA Kitsap 230 kV Substation. PSE requests a waiver of significant transmission project status for this project. The project is intended to provide additional capacity to serve the projected load growth in Kitsap County and surrounding areas. It has no impact to the WECC or any neighboring electric systems.

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Sea Breeze Pacific Regional Transmission System

500 10/1/2006 22 600 2 Two new 500 kV transmission lines between Vancouver Island (BCTC’s Pike substation) and the Olympic Peninsula (BPA’s Port Angeles and Fairmount 230 kV substations).

E. John TompkinsSea Breeze Pacific

RTS(860) 747-0497

Sea Breeze Pacific – West Coast Cable Project

500 2010 3 1600-3200 1 500 kV DC bi-pole transmission interconnection between the Alston Substation in Alston, Oregon and one or more substations in the San Francisco, CA Bay area

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Sea Breeze Pacific – Juan de Fuca Cable Project (jdF)

+/- 150 kV DC Q4/2014 1 550 MW 2 +/- 150 kV 550 MW HVDC Light transmission cable connecting the Olympic Peninsula of WA State (BPA) with Vancouver Island in British Columbia (BCTC). The Juan de Fuca Cable Project will run under the Strait of Juan de Fuca, connecting the Bonneville Power Administration’s Port Angeles substation in Port Angeles, Washington to the existing BC Hydro Pike substation in Greater Victoria, British Columbia. Associated facilities include converter stations adjacent to the existing substations.

Sara Van Mulligen(604) 689-2991

Blackhawk 345/120 kV Substation (was Emma)

345/120 Cancelled .1 This is a new substation with a projected in-service date of June, 2018. This project is postponed indefinitely.

Alex FraktinNVE

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Fallon 230 kV Source 230 Cancelled .3 Install a new 230 kV line From Pony Express Switching Station (Enel) to a new 230/60 kV substation (approximately 1/2 mile South of Fallon) and build a series of substations and switching stations (Pony Express, Bunejug, and Macari) to provide new source, via a 25 mile 230 kV line, to the City of Fallon. The projected in service date for this project is June 2014. The scope of this project has been changed due to a reduction in load growth in Fallon area, the termination of one LGIA and the reduction in a second LGIA have also contributed to the reduction in scope of this project. The project will now likely to be a 10 mile 230 kV generator lead line heading southward from the generator interconnect, company BO, with a reduced LGIA to the Pony Express Switching Station. The Pony Express switching station will be constructed at an existing generator interconnection site (Enel) and then connects to NV Energy’s Northern 230 kV system about five miles further south. No connection will be made from into Fallon from interconnection BO switching station.

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One Nevada Transmission Intertie Project (ON Line) (previously known as Ely Energy Center and associated Robinson Summit – Harry Allen 500 kV Transmission Project)

500 In-Service .3 1000 2 Constructing 500-kV 236 mile long line from the proposed Robinson Summit Substation located 20 miles west of Ely, Nevada to the existing Harry Allen Substation located northeast of Las Vegas, Nevada. Fold existing Falcon – Gonder 345 kV line into Robinson Summit Substation and connect 345 kV and 500 kV buses through 2×525 MVA 345/500 kV autotransformers. Install 70% series compensation equipment on Falcon – Robinson 345 kV line, 35 % at each end. NV Energy has completed Sub-Synchronous Resonance (SSR) studies identifying adverse effects and developed mitigations for NV Energy’s assets. As designated in the Transmission Use and Capacity Exchange Agreement (TUA) signed on 8/20/2010 between NV Energy and Great Basin Transmission, LLC (GBT), the ON Line is a jointly owned by NV Energy and GBT. At this time, the latest updated in-service date is Q1, 2013..

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Bothell – SnoKing 230 kV lines(2013 Waiver Request)

230 2018 .25 The project will re-conductor the double circuit Bothell-SnoKing 230KV lines with high temperature conductor. The purpose of this re-conductoring is to improve South-to-North transfer capability between the Northwest and British Columbia. Seattle City Light and Bonneville Power Administration will re-conductor their own section of the double circuit. The estimate in-service date for project will be 2018.

Desmond Chan206-615-0654

(SCL)

Delridge-Duwamish 230 kV line

230 TBD .25 This project will re-conductor the Delridge-Duwamish 230KV line with high temperature conductor. The purpose of this re-conductoring is to improve South-to-North transfer capability between the Northwest and British Columbia. The estimate in-service date for project will beTBD.

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Beverly Park 230/115kV Transformer

230/115 3/2018 .2 300 MVA 1. SNPD will construct a new 115 kV switchyard at Beverly Park substation, using a breaker‐and‐a‐half scheme to replace the existing single bus configuration.2. SNPD will install ONE new 230/115 kV transformer for the Beverly Park substation. This transformer will function as a backup transformer for loss of two out of three 230/115 kV transformers at BPA Snohomish substation.3. BPA will perform work at BPA Snohomish substation to provide a 230 kV source to Beverly Park substation. BPA owns the new 230 kV feed from BPA Snohomish to Beverly Park substation.

Long T. Duong(425) 783-4305

(SNPD)

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230 kV Re-Termination Project

230 In-Service .1 The purpose of this 230 kV Re-termination Project is to improve Tacoma Power’s system reliability and operational flexibility. The first part of this project to re-terminate TPWR’s Tacoma-Cowlitz #2 and Cowlitz-Southwest #3 230 kV lines to form the new Tacoma-Southwest 230 kV line was completed and placed in service in August 2012. The second part of the project, which involvesthe re-termination of BPA’s “South Tacoma- Cowlitz #1” 230 kV line from TPWR’sCowlitz 230 kV bus to TPWR’s “Southwest #4” 230 kV line to form the new “South Tacoma-Southwest” 230 kV line was postponed and is now anticipated to becompleted and released to operations in July 2013.

Francis Tong253-502-8262

(TPWR)

Southwest 230 kV Ring Bus Conversion

230 In-service 1 This project involves converting the existing main and auxiliary bus configuration at Tacoma Power's Southwest Substltion to a more reliable and efficient ring bus configuration. The number of terminals wiU remain at four with two for the incoming 230 kV lines and two for the 230/115 kV transformers. This project not only improvessystem reliability and operational1lexibility, it also prevents a single element from causing a total 230 kV bus outage at TPWR's Southwest Substation.

Canyon Substation / Switching Station

+/- 500 kV DC 2017-19 1 2000 MW 2 NorthernLights is a 500 kV, direct current, 2000 MW transmission line from southeastern Alberta, Canada to the Buckley station in northern Oregon. The Regional Planning process was completed in February 2008 and the Phase 2 status was achieved in March 2009. Further activity on the project is awaiting decisions within Alberta of the need for increased interconnection capacity to other markets. The project cost is $2 billion with an ISD of 2017 to 2019.

Bill Hosie403-920-7338

(TCP)

Chinook Project +/- 500 kV DC 2017 .1 3000 MW 1 Chinook is a 500 kV, direct current, 3000 MW transmission line from south-central Montana to the Eldorado Valley in southern Nevada with a potential future 750 MW intermediate converter station near the Borah substation in south-eastern Idaho. The Regional Planning process was complete in November 2009. TransCanada conducted an Open Season for the Chinook project that closed on December 16, 2010. Bids totaling 1500 MW were received; however they were not accepted as the amount was insufficient to justify allocating capacity at this time. TransCanada may decide to hold a new open season process, if regulatory uncertainties get resolved and if Montana energy project developers express sufficient interest in a new open season. It is not unusual for projects of this scale to test the market a number of times. The fact that a project is not successful in one open season does not mean that a project is dead and, indeed, other transmission projects in the west have had multiple open seasons. The project cost is $3 billion with an ISD of 2017.

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Zephyr Project +/- 500 kV DC 2020 .1 Zephyr is a 500 kV, direct current, 3000 MW transmission line from south-eastern Wyoming to the Eldorado Valley in southern Nevada. The Zephyr development plan includes a potential 750 MW intermediate converter station near the Borah substation in south-eastern Idaho. The Regional Planning process was complete in November 2009. In 2010, TransCanada concluded a successful Open Season with three substantial creditworthy Wyoming wind developers (Pathfinder Wind, BP Wind

Bob Burner704-382-6889

DATC

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and Horizon Wind) executing precedent agreements for the entire 3000 MW of Zephyr capacity. TransCanada and its customers are establishing market support prior to moving forward with full scale siting and permitting activities. The project cost is $3 billion with an ISD of 2020.

Havre to Rainbow 161kV Rebuild / Upgrade

161 On-hold .75 This project is on-hold status due to high priority oil load growth. Western’s 103 mile Havre – Verona – Rainbow 161kV transmission line was constructed and energized in 1935. It electrically parallels NorthWestern Energy’s (NWE’s) Havre – Rainbow 161kV circuit. These two circuits maintain separate rights-of-ways with two crossings. Western intends to rebuild its circuit in segments, at 230kV specification. Each segment is anticipated to be complete and re-energized in approximately one month. The existing right-of-way is inadequate and will be expanded in most areas and re-routed in others. An Environmental Assessment (EA) is complete for this project and has been issued for final publication. The first 30 mile segment between Havre and Verona is complete, along with 1 mile at the Rainbow / Great Falls end for re-termination into NorthWestern Energy’s (NWE's) Great Falls Substation in conjunction with Project 2) described below. In 2011, 14 miles of reroute and reconstruction began in the Loma, MT area and was approximately one-third complete when crews were re-dispatched due to storm damage in Eastern Montana / Western North Dakota (East Grid WAUE BA). Due to both storm damage and dramatic oil exploration load growth in the Eastern Montana / Western North Dakota area, this project has been placed on-hold for approximately 5 years, with approximately 5 years of construction remaining prior to completion. Therefore, target completion is estimated to be 2022. Once the project resumes, construction will again continue during non-peak loading periods only. Upon completion of each segment, the line will continue to be energized at 161kV until such time that conversion to 230kV is required. Additional system impact study analyses will be required with stakeholder approval prior to the 230kV voltage conversion. No interruption of customer service during construction is anticipated with this project. The project will receive a single 1 mile reroute this summer, near Carter, to raise the highway crossing for accommodation of extra large/tall shipments of pre-fabricated tanks North of Great Falls, MT.

Frank E. Jarvenpaa

(406) 247-7384(WAUM)

Havre Substation Upgrade 161/115/12.47 In-service .2 Western currently owns, operates and maintains the Havre 161/115/12.47kV Substation. Upgrades are a result of needed relaying replacements and a new 115 kV interconnect for network load. The existing 115 kV single breaker and bypass switch will be replaced with a ring bus configuration serving the existing Shelby circuit and new network service interconnect. In addition, a new dedicated circuit interrupter will be installed for protection of the transformer. Construction design is complete. The control building was completed 2012 and currently is receiving protective relaying upgrades. Completion of the 115 kV yard work is expected by fall of 2014. The 115 kV bus will be out of service for extended periods during the 2014 construction season. However, no interruption of customer service during construction is anticipated. Minor outages are expected for Hill County Electric Coop during sequenced re-energization. Herron Park is currently served via a temporary tap off the Havre-Shelby 115 KV line.

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New 161/115 kV Substation between Richardson Coulee and Malta Substations

161/115 On hold .2 This project is on-hold status waiting for regulatory approval. Western currently owns, operates and maintains the 180 mile Fort Peck-Richardson Coulee-Malta-Harlem-Havre 161kV circuit, which is constructed for future 230kV conversion. A new substation is anticipated to be installed approximately 18 miles East of Malta in the 49 mile section between the Richardson Coulee and Malta Substations. This new substation will provide a 161kV ring bus constructed at 230kV specification, 161/115kV transformation and a 115kV tap for a new 115kV line that will extend approximately 48 miles to serve an ultimate 21 MW of new oil development network load. VAR support will include a 15 MVAR shunt capacitance at the new 161kV substation and a 15 MVAR shunt capacitance at the load. Due to regulatory delays, construction is not anticipated to begin before fall of 2014. No interruption of customer service during construction is anticipated.

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Dry Fork Station 390 In-Service

38 The Dry Fork Station is a 390 MW net coal fired station under construction and scheduled to be in commercial operation in June of 2011. It is located at the Dry Fork Substation.

Matthew Stoltz701-557-5647

(BEPC)

Laramie River Station 345/230 kV Transformer #2

345/230 In-Service

600 MVA This project consists of the addition of a second 345/230kV 600MVA transformer at the Laramie River Station (LRS) switchyard in southeast Wyoming. It will connect to the existing 345kV and 230kV buses within the LRS switchyard. The in service date is August 2014. The transformer will be owned by the Missouri Basin Power Project (MBPP). This transformer will primarily function as an in service spare unit for the MBPP. No increase in system intact path ratings is expected; therefore the WECC path rating process is not necessary. Prior outage limits on the TOT3 path and LRS generation limits may be increased as determined by future operating studies. Under some conditions a LRS generation prior outage can contribute to TOT3 limits due to overload of the existing transformer. Also prior outage of elements of the LRS 345kV transmission system can cause LRS generation limitations due to overload of the existing transformer. The second transformer will improve system capacity in these situations.

Matthew Stoltz701-557-5647

(BEPC)

Boone-Nyberg 115 kV Upgrade Project

115 In-Service

This project is the proposed alternative to the cancelled second 230/115 kV 150 MVA transformer at the Boone 230 kV substation near Boone, CO. This project is being coordinated with Public Service Company of Colorado (PSCo) and Tri-State Generation and Transmission (TSG&T) for increased reliability in the Rocky Ford/La Junta area.The project consists of a new double circuit 115 kV line between Boone 115 kV and Nyberg 115 kV substations, utilizing existing right-of-way where possible and replacing the Boone – DOT Tap – Nyberg 115 kV transmission line. New 115 kV line terminal positions are required at Nyberg and Boone 115 kV substations to integrate the new circuit.The Colorado Coordinated Planning Group (CCPG) is a Sub regional Planning Group in the Rocky Mountain Region and allows open participation in its planning meetings to stakeholders interested in this project. The requirements of project coordination review for this project have been met through the CCPG. The planned in-service date is 2015.

Wes Wingen605-721-2268

(BHE)

Teckla-Osage 230 kV Transmission Line

230 In-Service

.2 The Teckla-Osage 230 kV line will consist of approximately 60 miles of 1272 ACSR ‘Bittern’ conductor on H-frame poles. The line will be constructed to provide needed Common Use System (CUS) transmission capacity, accommodate projected load growth, and increase Wyodak area stability margins. Reliability analysis for this project was initially performed as part of the 2008 BHBE LTP Study and the need reviewed in subsequent BHBE LTP Studies.The Colorado Coordinated Planning Group (CCPG) is a Sub regional Planning Group in the Rocky Mountain Region and allows open participation in its planning meetings to stakeholders interested in this project through the WY/SD

Jon Cichoxz605-721-1704

(BHE)

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Common Use Subcommittee (WY/SD CUS). The requirements of project coordination review for this project have been met through the CCPG.http://www.westconnect.com/filestorage/WY_CUS_Update_2012-12-13.pdfThe planned in-service date is 2015.

Osage-Lange 230 kV Transmission Line

230 2017 .2 The Osage-Lange 230 kV line will consist of approximately 75 miles of 1272 ACSR ‘Bittern’ conductor on H-frame poles. The line will be constructed to provide needed Common Use System (CUS) transmission capacity and provide an additional path to the Rapid City load center. Reliability analysis for this project was initially performed as part of the 2008 BHBE LTP Study and the need reviewed in subsequent BHBE LTP Studies.The Colorado Coordinated Planning Group (CCPG) is a Sub regional Planning Group in the Rocky Mountain Region and allows open participation in its planning meetings to stakeholders interested in this project through the WY/SD Common Use Subcommittee (WY/SD CUS). The requirements of project coordination review for this project have been met through the CCPG.http://www.westconnect.com/filestorage/WY_CUS_Update_2012-12-13.pdfThe planned in-service date is 2015.

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Bill Durfee (Sundance) 230 kV Substation

230 In-Service

.1 On July 10, 2012, Powder River Energy Corporation (PREC) submitted to Black Hills Power a formal application for a new interconnection on the existing Lookout-Hughes 230 kV line. The interconnection will consist of a 100 MVA 230/69 kV transformer and a three terminal 69 kV switching station. The proposed location of the new interconnection is approximately 5 miles south of Sundance, Wyoming. Basin Electric Power Cooperative (BEPC) is currently performing a system impact study for this project. In addition, reliability analysis for this project was included as part of the 2013 BHBE LTP Study. The planned substation near Sundance, Wyoming was formerly named the Bill Durfee 230 kV substation at the end of 2013. The purpose of this project is to serve local load and increase local reliability. It is not expected to have a significant impact upon the operation of the Western Interconnection. The planned in-service date is currently 2015.

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Undervoltage Load-Shedding Scheme

115 Completed

.3 A temporary UVLS program was implemented on 8/6/09 at nine 115 kV substations to prevent a localized voltage collapse from occurring when loads are high within a 115 kV load-serving area for a Category C contingency causing loss of two of the four 115 kV lines providing service to the loads. The program is designed to shed up to 75% of Longmont-Del Camino-Erie area load (north of Denver, CO) in three 25% stages at 4, 12, and 20 second time delays for bus voltages below 0.90 p.u. The UVLS program is in the process of being removed from service due to the Fordham-Fort Saint Vrain 230kV Line being completed in November 2011.

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West Hill – Stegall 230 kV line Rebuild (BHP)

230 2020 .2 The West Hill-Stegall 230 kV line is planned to be rebuilt due to its age of infrastructure and will replace the existing 795 ACSR conductor with 1272

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ACSR. The rebuild will not have a significant impact upon the operation of the Western Interconnection and has a planned in-service date of Q4 2020 and will be completed in two segments.

West Hill – South Rapid City 230 kV line Rebuild

230 2018 .2 The South Rapid City-West Hill 230 kV line is planned to be rebuilt due to its age of infrastructure and will replace the existing 795 ACSR conductor with 1272 ACSR. The rebuild will not have a significant impact upon the operation of the Western Interconnection and has a planned in-service date of Q4 2018.

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Second 230kV line from Front Range Power Plant to Existing Nixon-Kelker (NX-KE) Line

230 2018 1 a) Second 230kV line from Front Range Power Plant to Existing Nixon-Kelker (NX-KE) Lineb) Currently, there is only one transmission line from the CSU-owned Front Range Power Plant that generates 460 MW at summer peak. The purpose of this project is to provide a second line out of the plant to connect with an existing CSU transmission line.c) The termination point for the existing 230kV NX-KE line will be removed from the Nixon 230kV bus and the line will be re-routed into the Front Range Power Plant substation which it is only a few hundred feet from the existing line. Rather than two identical NX-KE lines, CSU will now have one 230kV line from Nixon to Kelker and one 230kV line from Front Range Power Plant to Kelker.d) The expected date of release to operations is December 2015.e) The expected operating voltage is 230kV.f) The project is not expected to have a significant impact on the operation of the WECC interconnected electric system because CSU is a small, relatively self-contained system. Changing the termination point of this existing 230kV line has very little impact on the CSU system and even less impact on the WECC system. The project provides a reliability improvement for CSU under certain Category C or D outages.

Gary [email protected]

g(CSU)

Rifle – Parachute 230kV Line #2

230 In-Service

.3 The Rifle – Parachute Project consists of constructing a second 18-mile 230kV transmission circuit between Rifle and Parachute substations. The project is needed to accommodate projected load growth in western Colorado. The load growth consists primarily of natural gas developers that require transmission service to electric motor driven gas compressors for natural gas gathering and gas compression applications in Mesa and Garfield counties. The project has an in-service date of October, 2015.The project was granted a waiver of significant transmission project status in 2012.

Thomas W. Green303-571-7223

(PSC)

Pawnee – Daniels Park 345kV Transmission Project (2012 Waiver request)

345 2019 .3 The Pawnee – Daniels Park 345 kV Transmission Project consists of approximately 115 miles of 345 kV transmission between Pawnee Station and the Daniels Park Substation south of Denver. The project will also result in a new Smoky Hill – Daniels Park 345 kV line. The project is needed to accommodate additional generation in northeast Colorado. The project has a planned in-service date of 2019. The project was granted a waiver of significant

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transmission project status in 2012.

San Luis Valley-Calumet-Comanche Transmission Project

345 Cancelled

.2 The San Luis Valley – Calumet – Comanche Transmission Project is a joint transmission plan between PSCo and Tri-State G&T. It consists of double-circuit 230kV transmission from the San Luis Valley Substation in south-central Colorado to a new Calumet Substation, near Walsenburg, Colorado, and then double-circuit 345kV transmission from Calumet Substation to the Comanche Station, near Pueblo, Colorado. A comprehensive progress report was included with the PSCo 2010 Annual Progress Report. The timing of this project remains uncertain as indicated by the PSCo 2012 Project Report.

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Tot 7 Expansion Project Cancelled

.2 This project is expected to consist of new transmission originating in Weld County, Colorado and connecting to the existing transmission system northeast of the Denver-metro area. The project would increase local reliability to existing customers and provide transmission capacity to serve anticipated load growth in the region. The project would also accommodate additional generation resources north of Denver. Since the project impacts the existing Tot 7 path (Path 40), PSCo initiated the WECC Project Coordination process. Studies will progress through 2014 and an in-service date is uncertain at this time.

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Cogentrix of Alamosa 30 In-Service

.1 This project is a Solar PV generator connected to the Blanca Peak 115 kV substation.

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Limon 1 200 In-Service

.1 This project is wind generator connected to the Missile Site 345 kV substation. “

Limon 2 200 In-service

.1 This project is wind generator connected to the Missile Site 345 kV substation. “

Cherokee 5. 6. 7 570 In-Service

.1 Interconnection

MW Type ISD

Cherokee 115kV

570 Gas(CC) 2016

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Arapahoe 3 (retired) -44 Retired .1 Interconnection

MW Type ISD

Arapahoe -44 Coal 2014

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Zuni 2 (retired) -65 Retired .1 Interconnection

MW Type ISD

Zuni -65 Coal 2015

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Cherokee 3 (retired) -152 Retired .1 Interconnection

MW Type ISD “

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Cherokee 115kV

-152 Coal 2016

Northern Greeley Transmission(2016 Waiver Request)

115 2020 .3 This project consists of approximately 25 miles of new transmission, and two new substations in order to increase reliability, load-serving capability and resource accommodation northeast of the City of Greeley, Colorado. Reliability will be enhanced by replacing existing aging 44 kV transmission with higher voltage transmission. The transmission will originate from the existing Western Area Power Administration (WAPA) Ault Substation and terminate at the existing Cloverly Substation. The project will also add two new substations to facilitate the transfer of existing loads from the 44 kV system to the higher voltage system. The Northern Greeley Transmission is proposed to be built to allow for future double-circuit, 230kV operation, but will initially be operated as single-circuit 115 kV. This project will be presented to the CPUC in 2016 and has a planned in-service date of 2020.

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Southern Greeley Transmission Plan(2016 Waiver Request)

230 2022 .3 The Southern Greeley Transmission Plan consists of two 230 kV transmission lines: the Weld – Rosedale and Rosedale – Milton 230 kV transmission projects improve local reliability, increase load-serving capability, and facilitate longer-term transmission plans in northeastern Colorado. The two projects consist of approximately 26 miles of new 230 kV transmission originating at the planned Milton Substation, south of Kersey, Colorado, tie into the Rosedale Substation, south of Greeley, and terminate at the Weld Substation. The Weld – Rosedale – Milton project has a planned in service date of 2022.

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Rush Creek Transmission Project

345 2018 .2 The Rush Creek Transmission Project consists of a 90-mile radial 345 kV transmission line from the existing Missile Site Substation, near Deer Trail, Colorado, to two wind generation facilities in eastern Colorado. The project was approved by the CPUC in 2016, and will accommodate 600 MW of wind generation, planned for 2018. PSCo requests a waiver of significant transmission project status for this project, since it a radial generation tie-line and does not impact any neighboring electric systems.

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Comanche Solar 120 2016 .1 Interconnection

MW Type ISD

Comanche 230 kV

120 Solar(PV) 2016

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Rush Creek 600 345 2018 .1 Interconnection

MW Type ISD

Missile Site 345 kV

600 Wind 2018

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Laporte 230 kV Substation Expansion

230/115 In-Service

.1 Reconfigure an existing 230/115 kV substation with a 230 kV breaker-and-a-half yard to connect four adjacent transmission lines (converting one from 115

Jeremy [email protected]

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to 230 kV) and two 230/115 autotransformers to be in-service May 2016. The project will have no regional impacts. The purpose of the project is to improve reliability in the Laporte, Colorado area which is in the northwest part of the Foothills Area system. The attached document shows the scope of the project.

rg (PRPA)

Boyd 230/115kV Transformer Addition Project

230/115 12/2018 .1 A second 230/115kV Transformer will be added to the substation along with converting the 115kV ring bus configuration to breaker and a half and is planned to be in-service December 2018. The project will have no regional impacts. The purpose of the project is to improve system reliability in the Loveland, Colorado area which is in the central part of the Foothills Area system.

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Wayne Child Substation Project (aka TOT3 Archer Interconnection Project previously known as the 300 MW Path 36 Upgrade)

345/230 2019 .3 300 MW 3 This Project will construct a new substation (Wayne Child substation) which will sectionalize MBPP’s Laramie River Station (LRS) – Story 345 kV line near the existing Archer substation, complete with 345/230 kV transformation, and construct approximately 1/3-mile of 230 kV line between Archer and Wayne Child substations. Line upgrades of the LRS – Ault and LRS – Wayne Child 345 kV lines will be necessary, as well as capacitors at Dalton substation near Sidney. This project will also establish a 34.5 kV point of delivery for High West Energy’s proposed 34.5-12.5 kV, 20 MVA substation contained within Tri-State’s proposed Wayne Child 345-230 kV substation. The project is planned to be completed in the 4th quarter, 2017, and is in Phase III of the WECC Three Phase Rating Process.

Ryan Hubbard303-254-3449

(TSGT)

Lamar-Front Range Project 345 TBD 1 2000 MW This project includes two high voltage transmission paths, one from Lamar substation to the Pueblo area and a second from Lamar to substations near Brush and/or Deer Trail. This will provide for better reliability to serve loads in the entire eastern Colorado footprint. Multiple voltage options have been examined. This project will be built in stages, with each designated stage being a part of the overall plan to address the eastern Colorado transmission needs. This project will also provide the infrastructure for Xcel Energy to meet Colorado Senate Bill 07‐100 requirements by connecting several Energy Resource Zones in eastern Colorado to the Denver Front Range area. This is a conceptual project, most likely to be constructed in stages, with each stage having its own in‐service date. The in‐service dates are currently TBD.

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Burlington-Lamar 345/230 kV Project (Request for Waiver 2014)

345/230 2020 The purpose of Burlington-Lamar Transmission Project is to incrementally alleviate existing and future transmission system constraints in southeast and eastern Colorado as identified in the Lamar Front Range studies. It is a subset of the greater Lamar Front Range project. To accommodate future build outs, the Burlington-Lamar line may be constructed for 345 kV operation, but will initially be operated at 230 kV.

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Badwater – Sawmill 230 kV Line

230 TBD 1 650 MVA This project will be done in two stages. The first will add a load serving substation on the Dave Johnston (DJ) – LRS 230 kV line to provide load

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serving capability for growing loads in eastern Wyoming. The planned in‐service date for this new Sawmill Creek substation is 2017. The second stage involves constructing a new 230 kV transmission line from Sawmill Creek substation to Badwater (PACE) substation. The new 100‐mile long line will allow improved reliability and allow Tri‐State to serve new load near central Wyoming. This project’s status has changed to a conceptual project with an in‐service data that is TBD.

Keota 345/115 kV Project 345/115 In-Service

.25 This project involves sectionalizing the Laramie River Station (LRS)-Story 345 kV line for a load serving connection approximately 60-65 miles northwest of Story. Tri-State would install a 225 MVA, 345/115 kV transformer at Keota substation, with the possible future addition of a second transformer. The level of load planned for this substation is initially 40 MW, with a potential increase to 120 MW based on the most recent load connection requests. The planned in-service date is 2015. This project is in Phase III of the WECC Three Phase Rating Process.

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Boone – Walsenburg 230 kV Line (2013 Waiver Granted)

230 TBD 1 645 MVA The Boone-Walsenburg project will consist of one new 230 kV transmission path from the existing Boone substation, owned by Tri-State and Xcel Energy, to the existing Walsenburg substation, owned by Tri-State. The conductor will be 1272 MCM ACSR-Bittern with a maximum design temperature of 100°C and be owned by Tri-State. Addition of a new 230 kV line will increase reliability in the Pueblo, Colorado area and also in Northeast New Mexico. Presently, the loss of the Comanche-Walsenburg 230 kV line results in severe thermal overloading on the 115 kV transmission system from West Station to Walsenburg. In order to mitigate the overloading, a Remedial Action Scheme (RAS) trips the Walsenburg-Gladstone 230 kV line which results in the loss of load and reduced reliability in Northeast New Mexico. The planned in-service date is 2018.

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San Juan Basin Energy Connect Project (2013 Waiver Granted)

230 ? 1 This project involves constructing a new 230 kV transmission line between the existing WAPA Shiprock Substation in New Mexico and a new 230 kV Iron Horse Substation in southwestern Colorado. A new 230 kV Kiffen Canyon Substation will also be required along with a phase shifting transformer. It will allow Tri-State to serve approximately 100 MW of new industrial load in SW Colorado.

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San Luis Valley-Poncha 230 kV Line Project (aka San Luis Valley-Calumet-ComancheTransmission Project)

230/345 2022 1 This project consists of a new 230 kV transmission line from the existing San Luis Valley substation to the existing Poncha substation.. The planned in-service date for this project is 2022.

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Montrose-Nucla-Cahone Transmission Upgrades

115/230 2019 1 This project upgrades the existing transmission lines and facilities from Montrose substation to Cahone substation from 115 kV operation to 230 kV.

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(aka Western Colorado TransmissionUpgrade Project) (2013 Waiver Granted)

The purpose of this project is to improve system reliability by eliminating the Nucla Remedial Action Scheme. The planned in-service date for this project is 2019.

Burlington-Wray 230 kV Line Project (2012 waiver Granted)

230 In-service

1 The Burlington-Wray 230 kV Line Project is intended to increase reliability in the project area, remove restrictions on the Burlington area network resources, and increase the deliverability of Tri-State resources to Tri-State member loads. This will be accomplished by adding a new 230 kV line from the Burlington substation to the Wray substation. The addition of the 230 kV line will add one new transmission line segment that will be constructed as a single circuit using 1272 MCM ACSR conductor with a maximum operating capacity of 1538 amps. This additional capacity will alleviate congestion in the Burlington area, increase reliability, and allow the potential development of renewable generation resources in the Burlington and Wray areas which currently have existing wind resources. The planned in-service date is 2016.

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Big Sandy-Calhan 230 kV Line Project (2012 Waiver Granted)

230 TBD 1 The primary purposes of the Big Sandy -Calhan 230 kV project are threefold: mitigate the projected overloads of Tri-State’s 100 MVA 230-115 kV Fuller transformer, should other mitigating actions not take place; increase Tri- State’s ability to deliver resources to Mountain View Electric Association (MVEA) and its other southeastern Colorado members; and provide a bulk transmission connection (i.e., a "strong" voltage source and increased power transfer capacity) to the eastern side of MVEA’s service area. This will be accomplished by adding a 230 kV line from Big Sandy substation to a new Calhan substation. This project is presently planned to be in-service TBD.

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San Luis Valley-Calumet-Comanche Transmission Project

230/345 Cancelled

.4 1000-1500 MW

The project consists of two basic sections and is a joint project with Xcel Energy. The first section consists of approximately ninety‐five (95) miles of new, double‐circuit 230 kV transmission, built from the San Luis Valley Substation to a new Calumet Substation, which would be located approximately six (6) miles north of the existing Tri‐State Walsenburg Substation. The second section consists of approximately forty‐five (45) miles of 19 new double‐circuit 345 kV transmission line from Calumet Substation to the existing Comanche Station near Pueblo. The project will improve local system performance and reliability, and will facilitate potential generation as part of Xcel Energy’s response to Colorado Senate Bill 07-100 which calls for development of transmission facilities to deliver power from renewable resource zones in Colorado. The project was initially planned to be in service in 2015. However, the project in service date has been delayed and will be determined after Colorado PUC and other stake holder input. This project is not expected to impose any significant impacts on the reliability of the WECC interconnected system.

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Gladstone 230 kV Phase Shifting Transformer Project (2012 Waiver Granted)

230 In-Service

1 The project is to add a 300 MVA Phase Shifting Transformer (PST) at the Gladstone existing substation. Studies by Tri-State and others have all shown the need for transmission network upgrades in the North East New Mexico (NENM) area to improve system reliability, load serving capability, mitigate operating issues related to phase angle differences, and to reduce system losses. The planned in-service date for this project is 2018.

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J.M. Shafer-Henry Lake 230 kV Project (Request for Waiver 2014)

230 2017 .33 Tri-State’s J.M. Shafer generating station has a total capacity of 272 MW and has some capability to be upgraded in the future. The station presently relies on the 230kV Fort Lupton Substation and its interconnected transmission system owned by Xcel Energy to deliver power to Tri-State’s loads in the PSCo Balancing Authority area. Since Tri-State has load in both the PSCo Balancing Authority area and the WACM Balancing Authority area, Tri-State desires the flexibility to directly deliver the output of the J.M. Shafer station to either Balancing Authority. Tri-State can do so by interconnecting the J.M. Shafer station directly to the Greenhouse Substation and constructing a Greenhouse to Henry Lake 230 kV line. Tri-State forecasts an increasing need for additional balancing resources in the WACM BA to comply with the State of Colorado’s Renewal Portfolio Standards. The J.M. Shafer to Greenhouse to Henry Lake230kV project will permit Tri-State to utilize the J.M. Shafer station as a balancing resource in the WACM BA. The project will also improve transmission reliability by providing a second transmission source directly to the J.M. Shafer station and mitigates the problem of losing the entire station for a single line outage.

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Miracle Mile Substation Stage 03

230 In-Service

.5 Installation of two 230/115 kV, 200 MVA power transformers, and associated equipment. Installation of two 30 MVAR shunt reactors.

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Torreon 345/115 kV substation Project (2016 Wavier Request)

345/115 2017 .3 Due to new loads in Jemez Mountains Electric Cooperative’s service territory, an additional source is required to reliably serve load. The new Torreon 345/115kV substation will sectionalize the existing La Jara‐San Ysidro 115kV line. It will connect to Public Service Company of New Mexico’s planned Cabezon 345kV switching which will tap the existing San Juan‐Rio Puerco 345kV line. The projected in‐service date for this project is 2017.

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Lovell – Yellowtail 115-kV rebuild

115 In-Service

1 Rebuild with 795 ACSS Nathan Peters970-461-7348WAPA-RMR

Curecanti 230/115-kV 150 MVA transformer replacement

230/115 In-Service

1 Replace Curecanti KZ1A 230/115-kV 75 MVA with a 150 MVA transformer “

Terry Ranch Road Substation

230 In-Service

1 Sectionalize Western’s Ault-Cheyenne 230-kV and Archer-North Park 230-kV with a new substation known as Terry Ranch Road. Substation will be built in a

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230-kV breaker and half configuration.

Archer KV1A and KV2A Replacement

230/115/13.8 2017 .5 Replace failed KV1A (3-single phase transformers) 167 MVA 220/115/13.8kV with 200 MVA (1-three phase) 230/115/13.8kV.Replace KV2A with a 200 MVA transformer; replace 482 & 1762 Breakers.

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Goshen Count Substation 230/115 2017 .5 Green field substation with 230/115-kV and 115/34.5-kV transformation at the intersection of the DJ-Stegall.

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Stegall KV1A Transformer Replacement

2017 .5 Replace Stegall KV1A 100MVA with 167MVA. Project scope changed to include replacing reactors and three breakers.

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TransWest Express Project 600 kV HVDC

2021 2 3000 2 TransWest Express LLC (TransWest) is developing the TWE Project, a 3,000 MW, 600 kV, line commutated, bi-pole high voltage direct current (HVDC) transmission project. TransWest and Western Area Power Administration (Western) have entered into a joint development agreement under which Western may become a 50% owner of the TWE Project. The TWE Project is approximately 730 miles long and will be connected to the AC transmission grid in south central Wyoming and in south eastern Nevada. The primary intended use of the TWE Project is to deliver wind generated electricity from Wyoming to markets in the desert southwest. The TWE Project is planned to be in service in late 2017 or early 2018.

David Smith(303) 299-1545

(TWE)

Wyoming Colorado Intertie 345 2022 2 TOT3 +900 MW

2 WCI is an approximately 180-mile, 345 kV transmission line between Laramie River Station in southeastern Wyoming and Pawnee in northeastern Colorado. WCI has a Planned Rating that will add 900 MW to the TOT3 (WECC Path 36) path rating. The WCI project is owned by Wyoming Colorado Intertie, LLC, a member of the LS Power Group of companies.

Mark D Milburn(636)532-2200WCI Consultant

[email protected]

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LIST OF ANNUAL PROGRESS REPORTS TO WECC - 2016ARIZONA – NEW MEXICO - NEVADA POWER AREA




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14.4 MVAr Capacitor Bank on Butterfield 230 kV

In-Service .1 The Purpose of the project is to provide adequate voltage support for various contingencies in theregion on both Arizona G&T’s system and neighboring Tucson Electric Power’s (TEP) system.

Todd Lichtas(Arizona G&T)520-586-5114

50 MVAr Capacitor Bank on Condados 230 kV bus

10/2018 .1 The Purpose of the project is to provide adequate voltage support for various contingencies in the region on both AEPCO’s system and neighboring Tucson Electric Power’s (TEP) system by moving one of the existing capacitors from AEPCO’s Morenci 230 kV bus to AEPCO’s Dos Condados 230 kV bus.

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Second 345/230 kV Transformer at Greenlee Substation

345/230 2/2019 .1 The Purpose of the project is to increase reliability for various contingencies by providing additional transformation at AEPCO’s Greenlee substation. The project will purchase a new 345/230 kV 400 MVA transformer for MW & E Copper Verde substation and relocate one of the existing transformers at Copper Verde to AEPCO’s Greenlee substation.

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Second 345/230 kV Transformer at Bicknell Substation

345/230 4/2019 .1 The Purpose of the project is to increase reliability for various contingencies by providing additional transformation at AEPCO’s Bicknell substation. The project will purchase a new 345/230 kV 400 MVA transformer for MW & E Copper Verde substation and relocate one of the existing transformers at Copper Verde to AEPCO’s Bicknell substation.

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Palo Verde – Delany 500 kV line

500 In-Service 1 Main components of the project will include a 14.86 mile 525 kV transmission line composed of 525 kV lattice structures with a phase conductor of 3x1780 kcm ACSR Chukar. Shield conductors for the line will utilize one 7#8 AW conductor (segmented) and one OPGW conductor (non‐segmented). A new 525 kV switching station will be constructed at the Delaney site and a new line terminal will be added at the Palo Verde switching station.

In 2011, APS completed a study (Preliminary Transmission Interconnection Impact Study: Q11 Palo Verde‐Delany‐Sun Valley and Q12 Hassayampa‐North Gila #2 500 kV Lines) and the results were approved by the Western Arizona Transmission System task force. Results of the study reveal the project will not adversely impact existing facilities while providing access to new renewable generation facilities west of Phoenix, Arizona. In addition, the project has also been included in several Ten Year Plan submittals by APS to the Arizona Corporation Commission as well as a number of sub‐regional studies with no adverse effects.

Results from studies mentioned in section B have found no adverse effects to the WECC or local transmission systems due to the addition of this project. Additionally, the project is anticipated to be part of the Palo Verde East transmission path.

Mark StokerTSS

RepresentativeArizona Public

Service Company602-250-1566

[email protected]

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Delany – Sun Valley 500 kV line

500 In-Service 1 Main components of the project will include a 28.30 mile 525 kV transmission line composed of both 525 kV lattice and monopole structures with a phase conductor of 3x1780 kcm ACSR Chukar. Shield conductors for the line will utilize one 7#8 AW conductor (segmented) and one OPGW conductor (non‐segmented). A new 525 kV switching station will be built at the Sun Valley site and a new 525 kV terminal will be added at the Delaney switching station.

In 2011, APS completed a study (Preliminary Transmission Interconnection Impact Study: Q11 Palo Verde‐Delany‐Sun Valley and Q12 Hassayampa‐North Gila #2 500 kV Lines) and the results approved by the Western Arizona Transmission System task force. Results of the study reveal the project will not adversely impact existing facilities while providing access to new renewable generation facilities west of Phoenix, Arizona. In addition, the project has also been included in several Ten Year Plan submittals by APS to the Arizona Corporation Commission as well as a number of sub‐regional studies with no adverse effects.

Results from studies mentioned in section B have found no adverse effects to the WECC or local transmission systems due to the addition of this project. Additionally, the project is anticipated to be part of the Palo Verde East transmission path.

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Hassayampa‐N.Gila #2 (aka HANG2) 500 kV Project (2015)

500 In-Service 2 The project has a CEC permit, has a planned in‐service date of summer 2015 and is currently under construction.To increase transfer capacity on Path 49, increase import capability in the Yuma load pocket and increase access to renewable generation near the Palo Verde/Hassayampa hub.Main components of the project will include a 111.41 mile 525 kV transmission line composed of 525 kV lattice structures with a phase conductor of 2x2156 kcm ACSR Bluebird. Shield conductors for the line will utilize two OPGW conductors (segmented). Two 170 Mvar, 525 kV line reactors, one located at each terminal, are included in the project and will be operated through a 525 kV breaker. A single‐segment, 33.7 Ω series capacitor will be located at the N.Gila switchyard. Rating for the MOV protected capacitor will be 2200 Amps continuous with a 135% 30 minute emergency rating.In 2011, APS completed a study (Preliminary Transmission Interconnection Impact Study: Q11 Palo Verde‐Delany‐Sun Valley and Q12 Hassayampa‐North Gila #2 500 kV Lines) and the results were approved by the Western Arizona Transmission System task force. Results of the study reveal the project will not adversely impact existing facilities along the Arizona‐California border. Also, the project has been included in several Ten Year Plan submittals by APS to the Arizona Corporation Commission as well as a number of sub‐regional studies with no adverse effects. In September 2011, the project participants completed the WECC Project Coordination Review Group Report for the Hassayampa‐North Gila #2 (HANG2) Project as a partial requirement for

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completing the WECC Project Coordination Process for the project. Subsequently, the project participants completed the Hassayampa‐N.Gila #2 Project (Path49) WECC Comprehensive Progress Report as a partial requirement for advancing from phase 1 to phase 2A in the WECC Path Rating Process.Based on the efforts completed to date, study results have revealed no adverse effects to the WECC or local transmission systems due to the addition of the HANG2 project. Additional studies including the phase 2 WECC Path Rating Process study are currently assessing this project. Finally, the project is anticipated to be part of the East of the Colorado River transmission path (WECC Path 49).

Palm Valle-Trilby Wash 230 kV Project

230 In-Service 1 The project has a CEC permit and has a planned in‐service date of summer 2015.Main components of the project will include a 15.91 mile 230 kV transmission line composed of 230 kV double circuit monopole structures with a phase conductor of 1x2156 kcm ACSS with the second circuit strung at a later date. Shield conductors for the line will utilize one 3/8“ HS conductor (non‐segmented) and one OPGW conductor (non‐segmented). A new 230 kV line terminal will be added at the Palm Valley substation. In addition, the project will also include construction of a new 230/69 kV substation in the Sun City area.

Sub‐regional studies are underway to assess the impacts of the project through the Western Arizona Transmission System task force. However, the project has been studied in various sub‐regional study efforts and has been included in several Ten Year Plan submittals by APS to the Arizona Corporation Commission with no adverse effects.

To date, study results have revealed no adverse effects to the WECC or local transmission systems due to the addition of this project.

″

Sun Valley‐Trilby Wash 230 kV Project (2016)

230 In-Service 1 The project has a CEC permit and has a planned in‐service date of summer 2016.

Main components of the project will include a 14.13 mile 230 kV transmission line composed of 230 kV double circuit monopole structures with a phase conductor of 1x2156 kcm ACSS with the second circuit strung at a later date. Shield conductors for the line will utilize one 3/8“ HS conductor (non‐segmented) and one OPGW conductor (non‐segmented). A new 230 kV switching station will be built at Sun Valley and a new 230 kV terminal will be added at the Trilby Wash substation. In addition, the project will also include a new 600 MVA, 525/230 kV transformer at the Sun Valley switchyard.

Sub‐regional studies are underway to assess the impacts of the project through the Western Arizona Transmission System task force. However, the project has been studied in various sub‐regional study efforts and has been included in

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several Ten Year Plan submittals by APS to the Arizona Corporation Commission with no adverse effects.

To date, study results have revealed no adverse effects to the WECC orlocal transmission systems due to the addition of this project.

Sun Valley – Morgan (TS9) 500 kV line

500 2018 1 The project has a CEC permit and has a planned in‐service date of summer 2018. Commercial operation date for the 230 kV portion of the project is approximately 2024.

Proposed renewable generation facilities are expected to interconnect to the Delaney 500 kV switchyard and will deliver resources to the Phoenix area through the Sun Valley‐Morgan 500 kV Project.

Main components of the project will include a 38.07 mile 525 kV transmission line composed of 525/230 kV double circuit monopole structures with a phase conductor of 3x1780 kcm ACSR Chukar. Phase conductor for the 230 kV line will be 1x2156 kcm ACSS and will be strung at a later date. Shield conductors for the line will utilize one 7#8 AW conductor (segmented) and one OPGW conductor (nonsegmented). A new 525 kV terminal will be added at both Sun Valley and Morgan switching stations. The Hassayampa Tap‐Hassayampa pump 230 kV line will be folded into the Sun Valley 230 kV station.

In 2014, APS completed a study (Morgan‐Sun Valley Project Wires to Wires Interconnection Study) and the results approved by the Western Arizona Transmission System task force on September 5, 2014. Results of the study reveal the project will not adversely impact existing facilities while providing access to new renewable generation facilities west of Phoenix, Arizona in to the Phoenix area. In addition, the project has also been included in several Ten Year Plan submittals by APS to the Arizona Corporation Commission as well as a number of sub‐regional studies with no adverse effects.

To date, study results have revealed no adverse effects to the WECC or local transmission systems due to the addition of this project. Additionally, the project is anticipated to be part of the Palo Verde East transmission path.

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Mazatzal 345/69 kV Substation (2017)

345/69 kV 2017 1 Main components of the project will include a fold‐in of the Cholla‐ Pinnacle Peak 345 kV line into a new 345 kV switching station as well as the addition of a 150 MVA, 345/69 kV transformer and a new 69 kV switching station.

The project has been modeled in various sub‐regional studies as well as several Ten Year Plan submittals by APS to the Arizona Corporation Commission.

Results from studies mentioned in section B have found no adverse effects to the WECC or local transmission systems due to the addition of this project.

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Fourcorners 500/345 kV Transformer #2

500/345 ? 1 Second parallel transformer same size as the first 500/345 kVtransformer.

*

N.Gila‐Orchard (previously called TS8) 230 kV Project (2021)

230 kV 2021 1 The project has a CEC permit and has a planned in‐service date of summer 2018.

Main components of the project will include a 12.50 mile 230 kV transmission line composed of 230 kV double circuit monopole structures with a phase conductor of 1x2156 kcm ACSS with the second circuit strung at a later date. Shield conductors for the line will utilize one 3/8“ HS conductor (non‐segmented) and one OPGW conductor (non‐segmented). A new 230 kV switching station will be added at the N.Gila site. In addition, the project will also include a new 600 MVA, 525/230 kV transformer at the N.Gila switch yard and the construction of a new 230/69 kV substation in the south Yuma area.

This project was included in the WECC Comprehensive Progress Report Hassayampa‐N.Gila #2 Project (Path49) associated with the HANG2 project WECC Path Rating Process studies. However, the project has been studied in various sub‐regional study efforts and has been included in several Ten Year Plan submittals by APS to the Arizona Corporation Commission with no adverse effects.

To date, study results have revealed no adverse effects to the WECC or local transmission systems due to the addition of this project. Additional studies including the phase 2 WECC Path Rating Process study and other operating studies are currently assessing this project.

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Scatter Wash 230/69 kV Substation (TBD)

230/69 TBD 1 Main components of the project will include a fold‐in of the Raceway‐ Pinnacle Peak 230 kV line into a new 230 kV substation as well as the addition of a 188 MVA, 230/69 kV transformer and a new 69 kV switching station.

This project has been studied in various sub‐regional study efforts and has been included in several Ten Year Plan submittals by APS to the Arizona Corporation Commission with no adverse effects.

To date, study results have revealed no adverse effects to the WECC or local transmission systems due to the addition of this project.

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Sun Valley‐Morgan 230 kV Project

230 TBD 1 The project has a CEC permit and has a planned in‐service date of summer 2026. Its previous in‐service date was 2024.

Main components of the project will include a 38.07 mile 230 kV transmission line composed of 230 kV circuit on double circuit monopole structures with the Morgan‐Sun Valley 500 kV transmission line (mentioned previously) with a phase conductor of 1x2156 kcm ACSS. Shield conductors will already be in‐

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place due to the pre‐existing line. New 230 kV terminals will be added at both Sun Valley and Morgan switching stations.

Sub‐regional studies are underway to assess the impacts of the project through the Western Arizona Transmission System task force. However, the project has been studied in various sub‐regional study efforts and has been included in several Ten Year Plan submittals by APS to the Arizona Corporation Commission with no adverse effects.

To date, study results have revealed have found no adverse effects to the WECC or local transmission systems due to the addition of this project.

Ocotillo Modernization Project (2018)

595 230 2018 1 Main components of the project will include retirement of two 110 MW generators and construction of five gas‐fired combustion turbines. In addition two 230 kV lines will be provide and interconnection from the collection yard to the existing Ocotillo 230 kV switchyard.

APS is currently finalizing the System Impact Study for the project.

Results from studies mentioned in section B have found no adverse effects to the WECC or local transmission systems due to the addition of this project.

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Montana Power Station (MPS

352 In-Service 1 The MPS facility is currently under construction in east El Paso. MPS will consist of four (4) LMS-100 units, with each unit having a maximum summer ration of 88 MW and a maximum winter rating of 105 MW (adjusted to El Paso’s altitude). Two of the four generating units went in-service by May 1, 2015. The third unit has a scheduled in-service date of May 1, 2016, and the fourth unit has a scheduled in-service in December 2016. When all four units are in service, the MPS facility will have a maximum generation rating of 352 MW in the summer and 420 MW in the winter.

Steve Eckles 915-543-4199

(EPE)

Navajo Transmission Project Segment 1

500 2016 1 1600 2 This project is the construction of a new 500 kV transmission line starting at the Four Corners 500 kV switching station and terminating at a switchyard south of the Navajo 500 kV switching station. As a result of this project, the nomogram for Path 22 will be eliminated and the two components of the path will be separated into Path 22A (Four Corners-Moenkopi and DREP-RME 500 kV) and Path 22B (Four Corners-Cholla #1 & #2 345 kV). Path 22A will have a non-simultaneous rating of 3190 MW and Path 22B will have a non-simultaneous rating of 1370 MW. Path 23 (Four Corners 500/345 kV) will have a rating of 1040 MW.

Tom JohnsSithe Global

509-926-3485

Great Basin Transmission SWIP-South Project

500 2014 1 +/- 2000 MW

2 Great Basin Transmission’s SWIP-South Project represents further development of the ONLine Project. Install 70% series compensation on Robinson Summit-Harry Allen 500 kV line, 35% at each end. Install two 600 MVA 345/345 kV Phase Shifting Transformers (+/- 48 degrees each) at Robinson Summit: one connected towards Falcon and the other connected

Evan EstesLS Power

Development, LLC636-532-2200

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towards Gonder. Construct an extending 500 kV circuit from NV Energy’s Harry Allen substation to SCE’s Eldorado substation (~60 miles), with 70% series compensation at Harry Allen. Plan of service also includes a +150 MVAR shunt capacitor at the Robinson Summit 345 kV bus, and a +400 MVAR SVD (4x100 MVAR steps) at the Robinson Summit 500 kV bus.

Great Basin Transmission SWIP-North Project

500 2014 1 +/- 2000 MW

2 Great Basin Transmission’s SWIP-North Project consists of a new 500 kV line from Idaho Power’s Midpoint substation to a new proposed Robinson Summit substation near Ely, Nevada (~275 miles). Install 70% series compensation (for 245 mile line impedance) as follows: 35% at Thousand Springs (located !125 miles south of Midpoint) and 35% at Robinson Summit.

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Bordertown to Cal Sub 120 kV Project

345/120 2019 1 270 MVA This project comprises a 345/120 kV 280 MVA transformer at Bordertown Substation and a 120 kV 11-mile line from Bordertown to California Substation. This project is expected to be in service in 2019.

Alex FratkinNV Energy North

775-834-4897

345 kV Voltage Support Project

345 In-Service This project was approved in Sierra 2007 Integrated Resource Plan. The project includes the construction of a 75 MVA 345 kV capacitor bank at North Valley Road substation and a 75 MVA 345 kV capacitor bank at Mira Loma substation for operational support of the voltage in the 345 kV transmission grid. The Mira Loma bank is already in service; the Valley Road bank is planned to enter service in March/April, 2014.

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Harry Allen 500/230 Transformer Addition

500/230 In-Service NV Energy plans to request Public Utility Commission of Nevada authorization to construct a new 500/230 kV 1500 MVA transformer at Harry Allen substation. The transformer would be installed at the 500 kV switchyard and connected to the 230 kV yard through a short 230 kV line. The transformer will be designed to impedance of 8% (in order to balance the system flow ability and the fault duty at 230 kV bus). This project is scheduled to be in service in June, 2016, depending on permitting timelines.

Alex FratkinNV Energy South

775-834-4897

Crystal 500 kV Line Interconnection

500 In-Service NV Energy will construct a new 500 kV bay with two new breakers in the South Crystal 500 kV Substation. This South Crystal 500 kV Substation work will terminate a new LADWP 500 kV line (with conductor 2-1590 ACSR per phase) interconnecting a new solar PV plant. This project is scheduled to be in service in November 1, 2014.

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McDonald 230/138 kV Additions

230/138 6/1/2018 .1 NV Energy plans to add a new 336 MVA 230/138 kV transformer at the existing McDonald substation. The existing Arden – Decatur 230 kV line will be folded into the new McDonald substation.

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Brooks 230/138/12 kV Substation and Pecos – Brooks 230 kV Line

230/138 Cancelled .1 The addition of a new 230 kV transmission line between Pecos and the future Brooks substation site along with folding in the 138 kV sub-transmission between Leavitt and Gilmore substations into the Brooks substation will eliminate N-1 low voltage issues. .

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Sunrise 500/230 kV Transmission Substation

500/230 Cancelled .2 To increase import capability into the NEVP system, the Sunrise Project will include a new 500/230 kV Sunrise substation connected through an 8-mile fold to the Harry Allen-Mead 500 kV transmission line, with one 1500 MVA 500/230 kV transformer. The Sunrise 230 kV facilities will be integrated with existing 230 kV Nevada Power Company facilities through four new 230 kV lines. In service in 2018. The 500 kV portion of the project has been canceled and replaced with the Harry Allen 500/230 kV transformer addition. The 230 kV additions are delayed to 2018 or beyond based on current load forecasts.

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Robinson – Harry Allen Transmission Line #2 Project

500 12/26 .2 Construct a 500-kV, 235 mile line #2 from the Robinson Summit Substation in Northern Nevada to the existing Harry Allen Substation in Las Vegas area. This line will parallel the “SWIP South” line route, on a separate ROW, with approximately 1000 ft separation between the two lines. The line will be 70% series compensated, 35% at each end. The line will serve as a conduit for new renewable generating resources between Northern and Southern Nevada, including those currently being developed along and in the proximity to the SWIP corridor. NVE has recently obtained from the BLM a permit for this line and is finalizing the substation portions of the permit. Similarly to “SWIP” Project, the SSR studies to identify possible adverse effects on the near-by generators will be performed. NV Energy is the proponent and the prospective owner of this project.

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Northwest 500/230 #2 Transformer Addition

500/230 Cancelled .1 Install three 500/230 kV, single phase autotransformers with a rating of 300/400/500 MVA at the existing Northwest substation.

″

Sunrise 500/230 kV #2 Transformer Addition

500/230 Cancelled .1 This is a second 500/230 transformer addition at Sunrise, which will fold in the existing Harry Allen – Mead 500 kV #1 line.

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East Tracy Second 345/120 kV Transformer

345/120 2020 This project is driven by expected load growth in the Tracy area. The project includes the addition of a second 345/120 kV 280 MVA transformer at the existing East Tracy substation. This project is planned to be in service in late 2018.

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Harry Allen – Eldorado 500 kV line

500 2020 .2 NV Energy is working on the T – T interconnection request from Desert Link interconnecting a 59 –mi long 500 kV line at Harry Allen substation in Southern Nevada. The line will connect Harry Allen with SCE’s Eldorado (located in Eldorado Valley, Southern Nevada). The line will be series compensated andwill have line shunt reactors at each end. The project in service date is 2020. Regional rating study will be performed to obtain a WECC ratingbefore the line enters service.

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Boulder Solar Interconnection Facility

278 2018 The Boulder Solar PV generation will be connected to NSO 230 kV substation (located in Southern Nevada). The total of the installed capacity (in two phases) will be 278 MW. The project in service date is 2018.

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Expansion of the Rio Puerco 345 kV Station

345 In-Service .5 The Rio Puerco Expansion Project includes the loop-in of two existing 345 kV transmission lines in the Path 48 interface and addition of a +250/-100 MVAR static VAR compensator. The existing lines include the San Juan-BA-345 kV line and the Four Corners-West Mesa 345 kV line. For details, please see the “Rio Puerco Expansion Comprehensive Progress Report and Expedited Path 48 Rating Review”.

The expansion of the Rio Puerco 345 kV Station was completed with looping in of the Four Corners-West Mesa 345 kV line in April 2016 and commissioning of a +250/-100 MVAR static VAR compensator which went into service June 2016.

George Nail505-241-2574

(PNM)

Cabezon 345 kV Station(2017 Waiver Request)

345 3/2018 .5 The Cabezon 345 kV station is being constructed on the San Juan-Rio Puerco 345 kV line to provide a new point of delivery for a Network Transmission Customer with an expected load addition of approximately 20 MW. The station will be owned and operated by PNM and will interconnect to Tri-State’s Torreon 115 kV Station through a Tri-State owned 345/115 kV transformer. This project will not have a significant impact on the operation of the WECC interconnected system and is for the purpose of serving local load. The in-service date for the station and transformer is March 2018.

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Clines Corners 345 kV Station(2017 Waiver Request)

345 4/2017 .5 PNM is constructing the Clines Corners 345 kV station (3 breaker ring) on the B-A-Guadalupe 345 kV line in order to accommodate the interconnection of the El Cabo 298 MW wind farm. The in-service date is April 2017. This project adds a new switching station on an existing line and will not have a significant impact on the operation of the WECC interconnected system.

*

Guadalup SVC (2017 Waiver Request)

345 2018 .5 PNM will install a +250/-100 MVAR static VAR compensator at the Guadalupe 345 kV station with an in-service date of spring 2018 for the purpose of providing local voltage support needed for increased transmission service on the radial 345 kV line running between BA station and SPP at Blackwater. This project will not have a significant impact on the operation of the WECC interconnected system.

*

Pinal West – Pinal Central-Abel – Browning 500 & 230kV line Estimated date of operation: 2014-2020

500/230 kV In-Service .5 1500 MW Point of Origin Pinal West SubstationIntermediate point Duke SubstationIntermediate point Pinal Central SubstationIntermediate point Randolph SwitchyardIntermediate point Abel SubstationIntermediate point Dinosaur SubstationPoint of Termination Browning SubstationLength Approximately 100 MilesThe proposed line is part of former Southeast Valley Project (SEV). The first segments of the projectswere finalized in:

Eldin Dizdarevic(602) 236-0960

(SRP)

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2007 – Dinosaur Substation2007 – Dinosaur – Browning 230kV2010 – Randolph – Browning 500kV energized at 230kV2010 – Randolph – Abel – Dinosaur 230kV2011 – Abel 230kV SubstationThe Pinal West – Duke-Pinal Central-Abel – Browning 500kV line will close the SEV loop in 2014. As apart of the project following facilities will be built:2014 – Pinal Central – Randolph 230kV2014 – Pinal Central – Browning 500kV (the voltage and configuration change of the 2010 Randolph-Browning 230kV section)2014 – Pinal West – Pinal Central 500kV and 230kV2014 – Pinal Central 500kV and 230kV Substation2014 – Duke 500kV SubstationThe Central Arizona Transmission System Study identified a number of system additions necessary to accommodate load growth and access to energy sources in the central Arizona area. This transmission line is the second segment of a series of transmission lines to serve the central Arizona region. This segment will initially provide an interconnection with the Palo Verde market area to market power to the Phoenix and central Arizona areas, and to accommodate the growth in development and population in Pinal County.

Desert Basin-Pinal Central 230 kV Line

230 In-Service .2 Point of Origin: Desert Basin Power Plant 230kV SwitchyardIntermediate point: NonePoint of Termination: Pinal Central 230kV SubstationLength Approximately: 21 milesThe purpose of the project is to remove the Remedial Action Scheme installed on Desert Basin Generating Station, improve reliability of the 230kV system in the region by reducing the loading on existing lines in the area, increase local area system capacity, reduce reliance on second party transmission system and to establish the Pinal Central Substation which was identified as one of the future injection points of power and energy into the central Pinal County load area.

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Eastern Mining Area Expansion Project (changed scope to Silver King – New Oak Flat – New Superior)

230/115 cancelled .5 The purpose of the project is to increase capacity to accommodate growing mining customer load. Several options are under consideration; however, the likely routing for the new transmission would be to follow the APS Cholla - Saguaro 500kV line until it crosses SRP’s 115kV line. From there, the 230kV line would likely follow SRP’s existing Ray - Knoll - Morris 115kV line.

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Price Road Corridor Project(2015 Wavier Request)

230 2019-TBD .5 The purpose of the project is to serve growing industrial and commercial customer loads along the Price Road Corridor, adjacent to Price Road in south Tempe and Chandler. Line routes will be determined through the CEC process. The project will consist of two new 230kV Substations located within the Price Road Corridor (a five-square-mile area bounded by Chandler Boulevard,

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Chandler Heights Road, Dobson Road, Price Road and the Gila River Indian Community). The new RS-28 230kV Substation will be located in the southern portion of the Price Road Corridor, and the new RS-27 230kV Substation will be located in the northern portion. The project will consist of a new single circuit Schrader – RS28 230kV line; a new double circuit Knox – RS27 230kV line; and a new double circuit RS27 – RS28 230kV line.

Rogers – Santan 230kV line(2015 Wavier Request)

230 2020 .25 Point of Origin: Rogers230kV SubstationIntermediate point: NonePoint of Termination: Santan 230kV SubstationLength: Approximately 9 milesThe purpose of the project is to, together with Browning-Corbell 230kV line reconfiguration, create athird 230kV circuit serving the Corbell 230/69kV substation. The Santan – Rogers 230kV line reconfiguration will follow the current route of the Santan – Thunderstone 230kV line.

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Silver King – RS-29 230kV Project

230 Cancelled .25 Point of Origin: Silver King 230kV SubstationIntermediate point: NonePoint of Termination: New RS-29 230kV SubstationLength: Approximately 12-14 milesThe purpose of the project is to increase to accommodate growing customer load. Several routing options are under consideration with the most likely routing that follows APS Cholla-Saguaro 500kV line.

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New Superior – New Oak Flat 230kV line (changed scope to Silver King – New Oak Flat – New Superior)

230 Cancelled .25 Point of Origin: A New 230kV Substation near the existing Goldfield – Silver230kV line, tentatively named “New Superior”Intermediate point: NonePoint of Termination: New 230kV Substation near Oak FlatLength: Approximately 3.5 milesThe purpose of the project is to serve growing customer loads at Oak Flat. The location of the New Superior and the New Oak Flat sites are still being determined. The preliminary 230kV alignment will be identified after these details are received.

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New Oak Flat – Silver King 230kV line (changed scope to Silver King – New Oak Flat – New Superior)

230 Cancelled .25 Point of Origin: A New 230kV Substation near the existing Oak Flat 115kV Station, tentatively named “New Oak Flat”Intermediate point: NonePoint of Termination: Silver King 230kV SubstationLength: Approximately 3 milesThe purpose of the project is to serve growing customer loads at Oak Flat and Superior. The line starts at the Silver King Receiving Station, heading south and then turning southwest into the New Oak Flat 230kV Substation. The alignment will then traverse to the west into the New Superior 230kV Substation. The location of the New Oak Flat and the New Superior sites are still being determined.

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Abel – Pfister - Ball 230kV line(2015 Wavier Request)

230 2021-TBD .25 Point of Origin: Future Ball (RS17) 230kV SubstationIntermediate point: Future Pfister (RS24) 230kV SubstationPoint of Termination: Abel 230kV SubstationLength: Approximately 20 milesEstimated in-service dates are:2021- Abel – Pfister – Santan 230kV line2021- Abel – Pfister- Schrader 230kV line2021- Pfister SubstationThe purpose of the project is to meet expected load growth in the eastern service territory. The route of the line is generally south and east from a point on the Santan to Schrader 230kV line nearthe future Ball (RS17) Substation to the Pfister (RS24) Substation in the southeastern portion of the town of Queen Creek, continuing south and east to the future Abel Substation.

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Browning – Corbell 230 kV line Reconfiguration(2015 Wavier Request)

230 2020 .25 The purpose of the project is to meet potential growing customer loads in the eastern valley of Phoenix Metro area. This project also creates a 3rd 230kV circuit serving the Corbell 230/69kV Substation and will prevent the loss of the Corbell 69kV area in the event of multiple 230kV line outages. The Browning – Corbell line reconfiguration will follow the current route of the Browning – Santan and Santan – Corbell 230kV lines. Reconfiguration of the line will be done in tandem with reconfiguration of Santan – Rogers 230kV line.

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Hassayampa – Pinal West #2 500 kV line(2015 Wavier Request)

500 2024 .25 The Central Arizona Transmission System Study identified a number of system additions to accommodate load growth and access to energy sources in the central Arizona area. This project will accommodate new generation in western Arizona that may be needed to fulfill the State Implementation Plan that results from the EPA’s ruling on Section 111(d) of the Clean Air Act. This is a reliability driven project and is not triggered by rising system load levels forecasted in the next ten years. The route is south and east of the Hassayampa Switchyard along the existing Hassayampa – Jojoba –Kyrene 500kV line to a point where the gas pipeline splits from the transmission line, then generally along the pipeline (except in the Maricopa County Mobile Planning Area) to the Pinal West Substation.

*

Palo Verde – Hassyampa 500 KV series reactors

In-Service .25 The short circuit study performed for Arizona Nuclear Power Project Engineering and Operating Committee (ANPP E & O) indicated that the single-line to ground and three phase fault current levels will exceed 63kA breaker interrupting capability at Palo Verde and Hassayampa 500kV substations in 2017-2020 timeframe. ANPP E & O has selected 12 Ohm series reactors at Palo Verde – Hassayampa 500kV ties, as a long term mitigation solution for the fault current problem at Palo Verde and Hassayampa.

*

Silver King – New Pinto Valley 230kV line(changed scope to Silver

230 Cancelled .25 The purpose of the project is to serve growing customer loads at Pinto Valley. The anticipated route for this project parallels the existing Coronado - Silver King 500kV line out of Silver King to the north until it turns east to terminate at a

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King – New Oak Flat – New Superior)

Substation proposed in the vicinity of the existing 115kV Pinto Valley Station.

Schrader-Abel 230 kV Line 230 Cancelled .1 This 230 kV transmission project is projected to be in service by 2019. “

Kyrene 500/230 kV Transformer

500/230 In-Service .1 A third Kyrene 500/230kV transformer will be constructed and energized by May 2012. APS is participating with SRP on the transformer.

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Rudd 230/69 kV Transformer

230/69 2021 .1 The first Rudd 230/69kV transformer will be constructed and energized by April 2018.

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Schrader 230/69 kV Transformer

230/69 In-Service .1 A second Schrader 230/69 kV transformer will be constructed and energized by April 2014.

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Resolution Copper 230kV Line

230 Cancelled .1 This project is driven by customer load growth, approximate mileage is 14. This 230kV transmission project is scheduled to be in service by 2018.

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Abel 230kV Generation(copper Crossing Generation)

819 Cancelled .1 Nine 91MW generating units are scheduled to be installed at Abel 230kV station. The first unit is scheduled to be in service by 5/2016, the second unit by 5/2018, the third and fourth units by 5/2019 and the rest of the units by 5/2020.

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Other Joint SRP/APS Projects

500 In-ServiceCancelled

.2 SRP and APS jointly plan to construct the following transmission facilities: Palo Verde-Delany (Harquahala Junction) 500 kV Line (Cancelled) Delany (Harquahala Junction)-Sun Valley (TS5) 500 kV Line (Cancelled). Morgan(TS9)-Pinnacle Peak 500 kV Line (in-service). Palo Verde-North Gila 500 kV Line (Cancelled). Sun Valley (TS5)-Morgan (TS9) 500 kV Line (Cancelled).

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Other SRP 115/230/345 kV Transmission Projects

115/230/345 Cancelled .6 RS26, formerly Fountain Hills Station-115 kV, 230 kV or 345 kV from Stewart Mountain, Goldfield or APS’ Cholla-Pinnacle Peak 345 kV Line (Cancelled)

Ball Loop-In (Cancelled) At this time, the in-service date for each of the following projects is

not yet determined and is subject to further additional study work. Browning-Thunderstone 230 kV Line (Cancelled) Silver King-Browning 230 kV Line (Cancelled) Silver King-Browning 230 kV/Superior Tie(Cancelled) Santa Rosa-CATSHV03 230 kV Line(Cancelled)

Pinnacle Peak-Brandow 230 kV Line with a possible loop into Rogers or Thunderstone (Cancelled)Silver King-Knoll-Hayden 230 kV Line (Cancelled)Point on the Kearny-Hayden 115 kV Line to Hayden double circuit loopPinal Central-Abel-RS20 500kV line

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Copper Crossing – Abel 230 kV (2017 Wavier Request)

230 2021 .3 The purpose of this project is to accommodate near term new generation resources connecting in the Abel area. This is a reliability driven project and is not triggered by rising system load levels forecasted in the next ten years. The project is a double circuit 230kV line and a new 230kV switchyard that will loop into the future Abel – Pfister – Ball 230kV project.

*

Silver King – New Oak Flat – New Superior 230 kV line(2015 Wavier Request)

230 2026 Point of Origin Silver King 230kV SubstationIntermediate point New Oak Flat 230kV SubstationPoint of Termination New Superior 230kV SubstationLength Approximately 6.5 milesThe purpose of the project is to serve growing customer loads at Oak Flat and Superior. The line starts at the Silver King Receiving Station, heading south and then turning southwest into the New Oak Flat 230kV Substation. The alignment will then traverse to the west into the New Superior 230kV Substation. The location of the New Oak Flat and the New Superior sites are still being determined.

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Southline Transmission Project

345/230 2018-2020 2 3 Southline Transmission, L.L.C. proposes to construct the Southline Transmission Project, a high-‐voltage electric transmission line and associated facilities in southern New Mexico and southern Arizona. The proposed project would include a New Build Section (New Build) and an Upgrade Section (Upgrade). 1. New Build -‐-‐ The first section is a proposed double-‐circuit 345-‐kV line originating at the Afton Switching Station outside Las Cruces, New Mexico, and terminating at Apache Switching Station in Southeastern Arizona; 2. Upgrade -‐-‐ The second section is a proposed upgrade of the Western Area Power Administration's existing 115-‐ kV Apache to Saguaro transmission line, to a 230-‐kV double-‐circuit line from Apache to Saguaro and Tortolita. Depending upon the final design, Southline is seeking the following ratings: 1. Afton East-‐to-‐West (E2W) -‐ Rating of 1,030 MW;2. Apache East-‐to-‐West (E2W) -‐ Rating of 1,000 MW;3. Saguaro/Tortolita West-‐to-‐East (W2E) -‐ Rating of 418 MW and a Saguaro/Tortolita West-‐to-‐East (W2E) Rating of approximately 1,000 MW with the Tucson to Oracle 115-‐kV line re-‐conductor project in service);4. Apache West-‐to-‐East (W2E) -‐ Rating of 957 MW and an Apache West- ‐to-‐East (W2E) Rating of approximately 1,000 MW with the Tucson to Oracle 115-‐kV line re-‐conductor project in service.

DougPatterson(Southline

TransmissionProject)

(415) 787-4209

SunZia Southwest Transmission Project

500 2020 9 3000 MW 3 The original SunZia Southwest Transmission Project was envisioned to be comprised of three segments of two 500 kV (AC) lines each from the renewable resource energy zone(s) in central New Mexico (referred to in this report as SunZia East) to the proposed Pinal Central 500 kV substation (to be operated by Salt River Project) in central Arizona. SunZia examined two intermediate electrical interconnections: one at a new SunZia South 500 kV substation near the existing Luna 345 kV substation in southwestern New Mexico (to be

Tom WraySunzia STP

(602)808-2004

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operated by El Paso Electric Company (EPE)), and another at the proposed Willow 500 kV Substation (to be operated by Tucson Electric Power (TEP)) in southeastern Arizona. Taken together with these two intermediate substations, the three project segments are created: (1) SunZia East to SunZia South; (2) SunZia South to Willow 500 kV; and, (3) Willow 500 kV to Pinal Central.The modified POS will be changed slightly to exclude a 500/345kV transformer at Luna and include only one intermediate electrical interconnection at the Willow 500 kV Substation. The 3 SunZia South Substation will initially only include a series capacitor bank (70% series compensation).Additional information that is periodically updated is available at the SunZia Project Website: www.sunzia.net.

Centennial West Clean Line HVDC Project

600 Q1/2018 7 3500 1 The project consists of a 900 mile 3,500 MW HVDC transmission line between northeastern New Mexico, north-central Arizona, and southern California.

Jim HsuPower Engineers,

Inc. forCentennial West Clean Line LLC.(480) 838-1427

North Gila-Imperial Valley #2 500 kV Project

500 2018 8 1 The 90 mile NG-IV #2 500kV project is a major intertie expansion between the North Gila area (southwest Arizona) and the Imperial Valley area (southern California); this line would parallel the existing North Gila-Imperial Valley line (also known as the Southwest Power Link, or SWPL), with an expected minimum separation of 250 feet from the existing SWPL. The potential for asecond circuit would be proposed to be constructed on the same set of structures, and would potentially loop in and out of the existing Highline 230 kV substation along the Highline Canal. The second circuit could be operated at 230kV initially until the operational and scheduling need develops over the years to potentially operate at 500kV. An additional alternative that we havebeen asked to review by the PCRG is to have a single 500kV line and with the loop-in to the existing Highline 230kV station. Review is currently underway of this configuration.

Mark EthertonTransco Energy. for

Southwest Transmission

Partners(602)809-0707

Hassayampa – Pinal West 500-kV Line Loop-In:

500 2018 .25 TEP plans to loop in the Hassayampa – Pinal West 500-kV line to the Jojoba Switchyard. The expected in-service date for this project is 2018. TEP submitted an Interconnection request to SRP in 2014. In April 2015, SRP began the Interconnection Feasibility Study (IFAS). SRP issued to TEP a draft report in December 2015. SRP will continue to work to complete the IFAS and draft report at the earliest time possible..

EvaMarie King(TEP)

Willow 345 kV Switchyard 345 2016 .3 TEP plans to construct the Willow 345-kV switchyard to accommodate a generator interconnection request. This switchyard will accommodate the lines to the generator and loop-in TEP’s Greenlee – Winchester 345-kV line. The scheduled in-service date has been delayed to late 2016. A System Impact Study is underway regarding this interconnection request.

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The Willow switchyard may also accommodate other renewable generation interconnection request with in-service dates earlier than 2016. Studies have not begun on these requests.

Tortolita-South 345 kV line 345 TBD .1 The project will tie two of TEP’s import points together. At this time, the project is expected to be in-service in 2021 but the schedule is tentative. Initial studies are expected to begin soon.

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Vail-South #2 345 kV line 345 TBD .05 Schedule is tentative and subject to change following the completion of study work to be conducted by TEP. A Comprehensive Progress Report will be issued when design studies are complete.

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Westwing – South #2 345 or 500 kV Line or Pinal West – South #2 345 or 500 kV Line

500 or 345 TBD .05 Schedule is tentative and subject to change following the completion of study work to be conducted by TEP. A Comprehensive Progress Report will be issued when design studies are complete.

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Tortolita – Winchester 500 kV Line

500 2022 .05 This is a new 500 kV transmission line project. The schedule is tentative and subject to change following the completion of study work to be conducted by TEP.

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Winchester – Vail #2 345 kV Line

345 2022 .05 This is a second circuit between Winchester and Vail parallel to existing circuit. The schedule is tentative and subject to change following the completion of study work to be conducted by TEP.

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Winchester – Vail #3 345 kV Line

345 2022 .05 This is a third circuit between Winchester and Vail parallel to existing circuit. The schedule is tentative and subject to change following the completion of study work to be conducted by TEP.

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Springerville – Greenlee #2 345 kV line

345 TBD .05 The schedule for this project is tentative and subject to change following the completion of study work to be conducted by TEP.

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Vail – Irvington – South 345 kV Line

345 TBD .1 TEP plans to construct a 345-kV line between TEP’s Vail and Irvington substations and between TEP Irvington and South substations. The tentative in-service date is 2021. Preliminary studies have been conducted as part of the Southeast Arizona Transmission Study (SATS) group. Additional study efforts will be undertaken prior to submitting a comprehensive progress report for the project.

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Tres Amigas Super Station 345 Q4 2017 4 750 MW 1Tres Amigas (TA) is developing the Phase I of the Tres Amigas Super Station (TASS) which will be an HVDC back to back connection between the Western Electric Coordinating Council (WECC) and the Southwest Power Pool (SPP) systems. The Phase I will consist of a 750MW back to back HVDC system utilizing voltage source converter (VSC) technology. Phase II is anticipated to provide an interconnection between the SPP and ERCOT interconnects.

Frank Barbera(203) 216-1060

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Successive phases may increase the TASS capacity between the interconnects.The Tres Amigas project was placed in the WECC portal on September 17, 2010. The Initial Progress Report for the project was submitted to the WECC on February 23, 2012, which initiated the Project Coordination Process and periodic updates have been provided. The Comprehensive Progress Report, submitted on April 6, 2013, provided an overall description of the Phase I Project, results of studies performed by PNM and status of the TASS.

Desert View- NVE Northwest 230 kV Line

230 12/2012 .2 640 MVA 1As reported to WECC in previous annual reports, NV Energy (NVE) was originally planning to own this line; however, NVE decided to abandon these plans. As such, VEA has decided to permit and build this facility, which represents one of the two final segments of YEA's Pahrump to NVE Northwest 230 kV transmission project. VEA has nearly completed all project permitting efforts with the BLM and BIA. All major materials have been ordered and construction of this 4.5 mile segment is expected to begin in June, 2012 with an in-service date of December, 2012.

Dale Broveak(775) 727-5312

VEA

Stirling Mountain – Vista 230/138 12/2012 .1 192 MVA VEA has substantially completed all construction efforts on this 25 mile segment. The in service date is coincident with the remaining four segments associated with the Pahrump to Northwest 230 kV project, which is anticipated to be December, 2012.

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Vista – Charleston 138 12/2013 .1 192 MVA VEA plans to construct a 138 kV line between VEA Vista Substation and VEA Charleston Substation. The tentative in-service date is December, 2013. VEA is currently permitting and acquiring right-of-way for this approximate 14 mile line.

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Vista – Pahrump 230 12/2012 .1 320 MVA VEA is finalizing the acquisition of right-of-way for this 13 mile segment. Major materials have been ordered and construction of this segment is expected to begin in September, 2012 with an in-service date of December, 2012.

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Desert View 230 kV Metering Station

230 12/2012 .1 VEA plans to construct the Desert View 230 kV Metering Station as a tie between VEA and NVE facilities for both electric as well as a VEA communications h u b near Las Vegas. Major materials have been ordered. VEA anticipated construction s t a r t i n g in June, 2012 with an in-service date of December, 2012.

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Stirling Mountain -Desert View 230 kV Line

230 12/2012 .1 320 MVA VEA has substantially completed all construction efforts on this 38 mile segment. The in service date is coincident with the remaining four segments associated with the Pahrump to Northwest 230 kV project, which is anticipated to be December, 2012.

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San Luis – Rio Colorado 604 Cancelled 170 This project consists of a 604 MW two-on-one combined cycle plant to be Stephanie Benjes of 99

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Project constructed one mile south of the Arizona (U.S.) / Mexico border. Interconnection will take place via two new 230 kV lines from the plant to the existing 161 kV Gila station and on to the existing North Gila station in Yuma, AZ

WAPA-DSW(602) 605-2793

Transmission Infrastructure Program (TIP) Project 230-kV ED#5 – 230 kV Transmission Project

230 In-Service 1 Installed a second circuit, 22 miles long, on Western’s 115-kV Casa Grande-Empire and Empire-ED5 transmission lines which were recently rebuilt as dual circuit steel monopoles, and 23 miles, on the SRP’s Duke-Pinal Central 500-kV steel monopoles.

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TIP Project ED#5 Substation Project

230 In-Service 1 Construct a new 230 kV substation at ED#5’s existing 115 kV yard. Project includes a 225 MVA 230/115/12.47 kV transformer, two breaker 230 kV ring bus configuration, 3 breaker and a half bays built to 230 kV standards but operated at 115 kV.

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TIP Project Test Track Substation Expansion Project

In-Service 1 Convert existing 4 breaker ring bus to 2 breaker and a half bays, add 2 new breaker and a half bays, and build tie line into SRP’s Duke substation.

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Longtin Substation Project 230/69 In-Service 1 Add a new 230/69 kV substation, sectionalizing the Davis-Topock #1 transmission line. The 230 kV facilities will be a 3 breaker ring bus configuration.

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Mead Stage 15 Transformer Replacement

345/230/24 ? A new 600MVA 345/230/24kV transformer was purchased, placed on a new concrete pad, and assembled during the Mead Stage 14 project. Mead Stage 15 completed the installation of all necessary bus, breakers, switches and relays placing the new transformer in parallel with the existing KU2A transformer.

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LIST OF ANNUAL PROGRESS REPORTS TO WECC – 2016CALIFORNIA-MEXICO POWER AREA




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Canyon Power Project 194 12/2011 1 A new generating facility to be located in the city of Anaheim (County of Orange) will have a maximum net plant output of 194.1 MW. The project consists of four (4) GE LM6000 simple cycle natural gas combustion turbines and interconnects to ANHM’s 69 kV electrical system. Planned operating date of first unit is July 2011 and the overall project completion expected by December of 2011.

Nam NguyenANHM

(714) 765-5122

Tecnologico 230 kV SVC 200 MVAR

230 In-Service .1 A new SVC (-75 / +200 MVAr) will be connected at the Tecnologico 230 kV substation (20111 “TEK-230”) for local voltage support and to increase reactive margin in the Valley Area of the CFE Baja California system.

Jose SantamariaCFE

011 52 (686) 558-1541

El Centinela 230 kV Substation

230 Cancelled .1 A new substation “El Centinela” (20453 “CNT-230”) is planned to be built between buses 20111 (TEK-230) and 20112 (STB-230).

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Carranza 230 kV Substation 230 In-Service .1 A new substation “Carranza” (20461 “CZA-161”) is planned to be built between buses 20153 (GOR-161) and 20147 (CTY-161).

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Valle de Puebla 230 In-Service .1 A new substation “Valle de Puebla” (20460 “VPA-230 “) is planned to be built between TL 20111 “TEK-230 “ – 20112 “STB-230 “ 230 kV.

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San Luis Rey 230 kV Substation

230 In-Service .1 New substation “San Luis Rey” (20454 “SLR-230 “) between TL 20104 “CPD-230 “ – 20177 “PID-230 “ 230 kV. Commercial date, September, 2013.

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Transmission Line ROA – CPD 230 kV

230 In-Service .1 TL 20118 “ROA-230” – 20104 “CPD-230” will be relocated on July, 2013. New line will be 20118 “ROA-230” – 20103 “WIS-230” – 20104 “CPD-230”

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Generator Project 120 In-Service .1 Three new gas turbine generators, 72.823 MVA capacity each, connected to Presidente Juarez 115 kV bus, 20019 PJZ-115. Total capacity 120 MW. Commercial date, January 2014.

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La Jovita Power Plant 303 In-servcie .1 One gas turbine, one steam turbine, total power delivered 303 MW, newsubstation connected to the system through the TL PJZ – CIP in 230 kV.

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Santa Isabel Fourth Transformer

230/161 6/2017 .1 This fourth transformer will be moved from SE La Rosita, this movement isto increase reliability to 161 kV grid.

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Two Transmission Line Santa Isabel – La Rosita 230 kV

230 4/2017 .1 A double circuit 230 kV line between Santa Isabel – La Rosita, these newlines will be replace those lines at 161 kV between these substations.

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Generation Projects 7684 5/1/08 – 11/30/14

1 The following are generation projects in the ISO generation interconnection queue that the facility studies have been completed and the interconnection agreements have been executed: Devers Substation – 850 MW – 2010 Tesla Substation 230 kV bus E – 1156 MW – 11/30/14 El Segundo 220 kV bus – 630 MW – 6/1/13

Paul DidsayabutraCISO

(916)608-1281

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Devers-Palo Verde 500 kV line near Blythe – 520 MW – 2010 McCall Substation – 300 MW – 3/31/13 Eastshore Substation – 361 MW – 6/1/12 Between Cottonwood and Vaca-Dixon – 715 MW – 2010 Walnut Substation – 501 MW – 1/3/13 Imperial Valley Substation – 300 MW – 12/1/10

These projects are to be reported on by the individual entities responsible for them so the CISO will quit reporting in this forum.

Imperial Valley – Dixieland Substation 230 kV Interconnection

230/92 canceled 1.3 The project consists in constructing a new single circuit (prepared for double circuit) 230 kV transmission line from IID/SDG&E’s Imperial Valley Substation (IV Sub) to IID’s Dixieland Substation. The IV Sub to Dixieland Substation 230 kV transmission line will span an estimated 7.3 miles. The project also includes the installation of a 230/92 kV 300 MVA transformer at Dixieland Substation and interconnection facilities at Imperial Valley Substation.

The project will provide back-up for the potential outage of the existing “S” 230 kV transmission line. The new interconnection line will also increase the IID import/export capability to meet future load requirements.

David L Barajas760-482-3450

(IID)

Ramon Substation 230/92 kV Transformer Addition

230/92 Canceled .2 225 MVA The project consist of installing a second 230/92kV 300 MVA auto-transformer and convert the existing Ramon Substation 230 kV and 92 kV ring bus to breaker-and-a- half bus configuration.The purpose of this project is to provide redundancy to the existing Ramon 230/92 kV transformer.

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Imperial Valley Area Policy – Driven Transmission Line and Collector Station project

230 canceled 1 In December of 2012, the CAISO initiated an accelerated competitive solicitation process conducted for a policy-driven transmission line and collector station in the Imperial Valley area (the “IV Policy Element”). In July of 2013, the Imperial Irrigation District (IID) was selected as the Approved Project Sponsor to finance, own, construct, operate and maintain the IV Policy Element.The IV Policy – Driven Transmission Line and Collector Station Project, consists of a 230 kV collector station (Liebert station), located approximately one mile north of Imperial Valley (IV) Substation, and a short (approximately 1.4 mile) 230 kV transmission line connecting Liebert Station to IV Substation. The transmission line and the Liebert Station will become network facilities and will be turned over to the ISO operational control, once IID complete the construction of additional facilities required to interconnect the IV Policy Element project to the IID electrical system.The additional facilities required to interconnect the IV Policy Element to the IID electrical system consist of a 230 kV Station (Fern) located in the north side of Liebert Station; a 230 kV bus tie between Fern Station and Liebert Station, and the connection of the 230 kV “S” line from El Centro Switching Station (ECSS) to Fern Station.In addition IID will construct a new 230 kV circuit from Fern Station to IV Substation as part of this project.

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Once the IV Policy Element and the additional facilities are constructed, IID will establish two points of interconnection in the south with the CAISO and San Diego Gas and Electric (SDG&E) – one via the bus tie between Fern station and Liebert CAISO operated station, and the other via the transmission line between Fern station and IV Substation.The project also includes the relocation of an existing Gen-Tie from a Solar Generation Station from IV Substation to Liebert CAISO operated station.

El Centro Switching Station (ECSS) to Highline Station double circuit 230 kV transmission line

230 canceled .5 Rebuild the ECSS to Pilot Knob 161 kV and the ECSS to Drop No.4 92 kV double circuit transmission line sections (18 miles) from ECSS to East Highline Canal intersection, build one mile of double circuit 230 kV transmission line to extend the line into Highline station. Build one mile of double circuit 230 kV transmission line to interconnect the remaining 161 kV line to Pilot Knob and the 92 kV line to Drop 4.The project includes the following upgrades in ECSS and Highline stations:Highline Substation: Upgrade 230 kV and 92 kV switch yards and building a new 161 kV Bus section, to interconnect the new 230 kV circuits to ECSS, the 161 kV line to Pilot Knob and the 92 kV line to Drop No.4 Generation Station.ECSS Substation: Upgrade the 230 kV switch yard to breaker–and-a-half bus configuration to accommodate the new 230 kV circuits from Highline Substation.This project is part of the initial phase of IID’s Strategic Transmission Expansion Plan (STEP).

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El Centro Switching Station (ECSS) to Fern Station double circuit 230 kV transmission line

230 canceled .5 Re-build the ECSS to the proposed Fern station single circuit 230 kV “S” transmission line (Approximately 17 miles) to double circuit 230 kV.Upgrade the ECSS 230 kV switch yard to interconnect the new double circuit 230 kV line to Fern Station and upgrade the Fern Station to accommodate the second 230 kV circuit from ECSS.This project is part of the initial phase of IID’s Strategic Transmission Expansion Plan (STEP).

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Talega-Escondido/Valley-Serrano 500 kV Interconnect Project (TE/VS Interconnect)

500 Q1/2014 1 1500 1 The TE/VS Interconnect provides a high capacity link between the main backbone of California to San Diego Gas and Electric’s (SDG&E) 230 kV grid, providing the only 500 kV connection between the northern part of the SDG&E system and Southern California Edison’s (SCE) 500 kV grid. By adding a future link between the Sunrise Project’s 500 kV Central Substation and the TE/VS Interconnects Case Springs Substation, a 500 kV loop could be formed across the western section of the 500 kV lines from the Palo Verde area to Serrano on the north and Imperial Valley on the south. The project will also serve to connect the proposed 500 MW Lake Elsinore Advanced Pumped Storage (LEAPS) into the western grid. The TE/VS Interconnect is being permitted through the California Public Utilities Commission (A.10–07–001). Relevant FERC dockets: ER06–278, ER08–654. LEAPS License docket is P–11858.

Rex Wait(760) 599-0086

The Nevada Hydro Company

LA Basin Re-powering Projects:Haynes Phase 2

600530

In-Service 3.1

Planned in-service date is June 1, 2013.

Planned in-service date is December 2015.

Faranak Sarbaz213-367-1265

(LADWP)

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Scattergood

Upgrade terminal equipment on Northridge-Tarzana 230kV Line 1

230 In-Service 797 Upgrade terminal equipment on Northridge-Tarzana 230kV Line 1 “

Reconductor both Valley-Rinaldi 230kV Lines

230 6/2018 495 Reconductor both Valley-Rinaldi 230kV Lines “

Reconductor Toluca-Atwater 230kV Line 1

230 On-Hold 708 Reconductor Toluca-Atwater 230kV Line 1 “

Add a second Victorville500/287kV Transformer Bank

500/287 cancelled 460 Add a second Victorville500/287kV Transformer Bank

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Replace Toluca 500/230kV Banks G and H

500/230 6/2020 913 & 930 Replace Toluca 500/230kV Banks G and H “

MWC Wind Generation 100 In-service .1 New wind farm to interconnect at Intermountain 345 kV switchyard. “

Owenyo Solar 200 cancelled .1 New solar PV plant to interconnect at Cottonwood 230 kV substation. “

Planned Wind #12 138 In-Service .1 New wind farm to interconnect with Barren Ridge-Rinaldi 230 kV. “

Planned Solar #2 250 2017 .1 New solar PV plant to interconnect at Beacon Ridge 230 kV substation. “

Pine Canyon Wind 150 cancelled .1 The status is pending on the new wind farm to interconnect with the Pine Tree 230 kV substation.

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Planned Solar #3 350 cancelled .1 The status is pending for the new solar PV plant to interconnect at Marketplace-Adelanto 500 kV substation.

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Planned Solar #6 150 cancelled .1 Status is pending for a new solar PV plant to interconnect at McCullough 230 kV substation.

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Adelanto Solar 9 In-Service .1 Under construction for a new solar PV plant to interconnect with the Adelanto 500 kV substation.

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Planned Solar #8 90 cancelled .1 Status is pending for new solar PV plant to interconnect with Barren Ridge 230 kV substation.

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Planned Solar #9 139 cancelled .1 Cancelled the new solar PV plant to interconnect with Barren Ridge 230 kV substation. “

Planned Wind #11 300 cancelled .1 New wind farm to interconnect with Barren Ridge-Rinaldi 230 kV. “

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Planned Wind #14 200 cancelled .1 New wind farm to interconnect with Barren Ridge-Rinaldi 230 kV. “

Planned Wind #8 201 cancelled .1 New wind farm to interconnect with Cottonwood-Barren Ridge 230 kV. “

Planned Solar #17 300 cancelled .1 New solar PV plant to interconnect with Barren Ridge-Rinaldi 230 kV.. “

Castaic Modernization Project 1255 In-Service .1 The planned completion date for the Castaic Power Plant (Units 1 to 7) Modification Project is Janurary, 2013.

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Scattergood-Olympic 230 kV cable #A Project

230 2017 656 MVA This project was identified in LADWP’s TPL-003 studies as a long-term resolution to potential overloads on the LADWP 230 kV system in the Los Angeles basin. This new line will parallel an existing 230 kV line between the Scattergood generating station and Receiving Station K. The Scattergood-Olympic 230 kV line #1 Project is expected to have no regional impact.

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Barren Ridge Renewable Transmission Project (formerly Barren Ridge – Castaic Transmission Project)

230 In-service .5 1600 MW To accommodate LADWP’s planned renewable generation along the Inyo-Rinaldi corridor LADWP is proposing the Barren Ridge Renewable Transmission Project (BRRTP) to access potential wind, solar and other clean, renewable resources from the Mojave Desert and Tehachapi Mountain areas of Southern California. The project is in Kern and Los Angeles Counties, and is approximately 77 miles in length from Barren Ridge Switching Station (BRSS) to Rinaldi Substation and 12 miles in length from Castaic Power Plant to the proposed Haskell Canyon Switching Station. The project consists of: 1. Construction of a 230 kV double-circuit transmission line from the LADWP BRSS to Haskell Canyon Switching Station. 2. Addition of a 230 kV circuit on the existing double-circuit structures from Haskell Canyon to the Castaic Power Plant. 3. Upgrade the existing Barren Ridge – Rinaldi 230 kV transmission line with larger capacity conductors between the BRSS and the Rinaldi Substation. 4. Construction of a new switching station at Haskell Canyon. 5. Expansion of the existing BRSS. The ultimate capacity between the BRSS and the Haskell Canyon Switching Station is approximately 1700 MW, while the existing rating is 459 MVA. The Project is budget and scheduled to be completed in 2016. The BRRTP is expected to regional impact.have no

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Beacon Solar 250 2017 Project/Upgrade: Beacon SolarLocation: Barren Ridge Switching StationCapacity: 250 MWStatus: Under ConstructionIn-Service Date: January 2016

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Copper Mountain Solar 3 250 In-service Project/Upgrade: Copper Mountain Solar 3Location: Marketplace Switching StationCapacity: 250 MW

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Status: Under ConstructionIn-Service Date: December 2015

Moapa K-Road Solar 250 In-service Project/Upgrade: Moapa K-Road SolarLocation: Crystal Switching StationCapacity: 250 MWStatus: Under ConstructionIn-Service Date: June 2016

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Reconductor Haskell Canyon – Rinaldi 230 kV line 1

230 In-service 797 Reconductor Haskell Canyon – Rinaldi 230 kV line 1 *

New Barren Ridge – Haskell Canyon 230 Kv Lines 2 & 3

230 In-service 459 New Barren Ridge – Haskell Canyon 230 Kv Lines 2 & 3 *

Reconductor Barren Ridge – Haskell Canyon 230 kV line 1

230 12/2022 459 Reconductor Barren Ridge – Haskell Canyon 230 kV line 1 *

New Castaic -Haskell Canyon 230 kV line 3

230 6/2018 761 New Castaic -Haskell Canyon 230 kV line 3 *

Reconductor Valley – Toluca 230 kV line 1 and 2

230 6/2020 761 Reconductor Valley – Toluca 230 kV line 1 and 2 *

Reconductor Both Rinaldi – Tarzana 230 kV line

230 12/2022 459 Reconductor Both Rinaldi – Tarzana 230 kV line *

Convert PP1 and PP2 – Olive 115 kV lines to Haskell Cny-Sylmar 230 kV line 2

230 12/2022 739 Convert PP1 and PP2 – Olive 115 kV lines to Haskell Cny-Sylmar 230 kV line 2 *

Add a second Victorville 500/287 kV Transformer Bank

500/287 6/2020 460 Add a second Victorville 500/287 kV Transformer Bank *

Replace Toluca 500/230 kV Bank H

500/230 6/2020 909 Replace Toluca 500/230 kV Bank H *

Recurrent Solar 60 In-service Recurrent Solar *

Spring Bok 1, 2 Spring Bok 3

340 In-service2018

Spring Bok 1, 2 and 3Spring Bok 3

Lyons Substation 230/21 5/2019 .5 1. Project Scope: The new MEID 230/21 kV substation will loop in and out of PG&E’s Wilson-Borden 230 kV transmission line. The project includes two 40 MVA, 230/21 kV transformers.

Juan Sandoval209-354-2814

MEID

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2. Estimated project in-service date: May, 2019.3. Project Status: A Facilities Study is currently being conducted by PG&E.4. Facility owner: Merced Irrigation District5. No regional impact: The purpose of this transmission project is to serve local load. The Lyons’ transmission project does not have a significant impact on the operation of the Western Interconnection, therefore MEID request a waiver from “Significant Transmission Project” status.

Pittsburg - Tesla 230 kV Reconductoring

230 In-service .1 Reconductor the Pittsburg-Tesla 230 kV Nos. 1 and 2 Lines with larger capacity conductors.

Jameson Thornton

415-973-7057(PG&E)

Tulucay 230/60 kV Transformer No.1 Capacity Increase

230/60 4/2020 .1 This project proposes to replace Tulucay Circuit Breaker No. 62 and all of its associated switches with a circuit breaker rated at 2000 Amps or higher. Any other associated terminal equipment will also be replaced as necessary

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Panoche-McMullin 230 kV Reconductoring

230 In-Service .1 The Panoche-McMullin 230 kV Line will be reconductored to be capable of carrying 1893 amps under normal and emergency conditions. Upgrades to terminal equipment at Panoche and McMullin substations should be performed as necessary to accommodate the higher ratings.

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Embarcadero-Potrero 230 kV Project

230 In-Service .1 Construct a new 230 kV underground cable to connect Embarcadero and Potrero substations.

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Weber 230/60 kV Transformer Nos. 2 and 2A Replacement

230/60 In-Service .1 Replace Weber 230/60 kV Transformer Nos. 2 and 2a with a new transformer rated at least 300 MVA with LTC and associated equipment

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Contra Costa – Moraga 230 kV Reconductoring

230 In-Service .1 Reconductor the Contra Costa - Moraga 230 kV DCTL with larger capacity conductors. *

Los Banos-4C779 #1 230 kV line Reconductoring

230 In-Service .1 Reconductor 4.5 miles of the Los Banos - Panoche 230 kV No. 1 Line with a higher capacity conductor

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Moraga Transformer No. 2 Capacity Increase

230/115 In-Service .1 Replace Transformer number 2, 230/115 kV at Moraga Substation with a 420 MVA rated unit.

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Midway-Kern PP 230 kV Line Nos. 1, 3 and 4 Capacity Increase Project

230 11/2026 .1 Replace limiting components at Kern PP and Midway Substations, to achieve full capacity on the Midway-Kern 230 kV Line Nos. 1, 3 and 4

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Moraga - Castro Valley 230 kV Line Capacity Increase

230 3/2021 .1 Upgrade the limiting substation equipment (jumper conductors and wave traps) at Moraga and Castro Valley substations

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Project

Fulton 230/115 kV Transformer

230/115 5/2022 .1 This project proposes to install a 230/115 kV transformer at Fulton Substation rated for 420 MVA or higher.

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Tesla - Newark 230 kV Upgrade II

230 Cancelled .1 Reconductor limiting sections of Tesla - Newark 230 kV No. 2 with larger capacity conductors.

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Rio Oso 230/115 kV Transformers

230/115 7/2021 .1 Replace the Rio Oso 230/115 kV transformers (Nos. 1 and 2) with two 420 MVA rated transformers. Convert 115 kV bus to BAAH.

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Rio Oso Area 230 kV Voltage Support

230 2/2022 .1 Install a new Static Var Compensator (SVC) at Rio Oso Substation and a new Shunt Capacitor at Atlantic Substation.

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Pittsburg 230/115 kV Transformer Capacity Increase

230/115 5/2022 .1 Install 3rd 230/115 kV Transformer at Pittsburg Substation with a rating of 420 MVA “

Ashlan-Gregg and Ashlan-Herndon 230 kV Reconductor

230 5/2018 .1 Reconductor limiting sections of Ashlan-Gregg and Ashlan-Herndon 230 kV sections with higher rated conductors.

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San Mateo Synchronous Condensor Replacement

115 Cancelled .1 Install reactive support device to replace old synchronous condensers at 115kV. “

Vaca Dixon - Lakeville 230 kV Reconductoring

230 Cancelled .1 Reconductor the Vaca – Lakeville No. 1, Tulucay – Vaca, and Tulucay – Lakeville 230 kV Lines with larger capacity conductors.

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Borden 230 kV Voltage Support

230 5/2019 .1 This project proposes to loop the Wilson-Gregg 230 kV Line into Borden Substation (Borden) and install 200 MVARs of mechanically switched capacitors on the Borden 230 kV bus.

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Morro Bay 230/115 kV Transformer

230/115 4/2019 .1 Install an additional 230/115 kV transformer at Morro Bay Substation rated for 200 MVA or higher.

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Kern PP 230 kV Area Reinforcement Project

230 3/2020 .1 • Convert Kern PP 230 kV double bus single breaker arrangement to breaker and a half • Replace limiting equipment on Kern PP 230/115 kV transformer No. 4 as necessary to achieve full transformer rating • Install a 230/115 kV Transformer Special Protection Scheme at Kern 115 kV to mitigate overloads of Kern PP Transformer Nos. 3, 4, and 5

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Wheeler Ridge Voltage Support

230 3/2019 .1 Install three 75 MVAR steps of mechanically switched capacitors on the Wheeler Ridge 230 kV bus, expand the 230 kV bus as necessary reconductor 0.5 miles of the Wheeler Ridge-Lakeview 70 kV line and transfer Copus from the Old River-Copus 70 kV line to the Wheeler Ridge-Lakeview 70 kV line.

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Wheeler Ridge Junction 230/115 5/2020 .1 Construct a new 230/115 kV Substation with Breaker and a Half at *

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Substation Wheeler Ridge Junction, Convert 15.5 miles of the Wheeler Ridge– Lamont 115 kV Line to 230 kV

Midway Fault Duty 230 4/2017 .1 Install reactors at 230 kV side of Midway transformer banks 11, 12 and 13. *

Gregg-Herndon #2 230 kV line Circuit Breaker

230 3/2018 .1 Replace limiting terminal equipment on the Herndon-Gregg #2 230 kV Line at Herndon substation.

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Bellota – Warnerville 230 kV line Reconductoring

230 8/2022 .1 Reconductor the Bellota – Warnerville 230 kV Line with a larger capacity conductor *

Rio Oso – Atlantic 230 kV Line

230 12/2022 .1 Construct a second Rio Oso – Atlantic 230 kV Line. “

Contra Costa sub 230kV Switch Replacement

230 122017 .1 Replace 230 kV Switch No. 239 at Contra Costa Substation that currently limits the Contra Costa PP-Contra Costa Sub 230 kV Line to 1600 Amps. Any other limiting element will be replaced as well.

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Gates No. 2 500/230 kV Transformer

500/230 12/2022 .1 Install a second 500/230/13.8 kV transformer (three single-phase units, 374 MVA each) at Gates Substation

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Kearney-Herndon 230 kV Line Reconductor

230 3/2019 .1 Reconductor 10 miles of the Kearney - Herndon 230 kV Line “

Warnerville-Wilson 230 kV Series Reactor

230 12/2017 .1 Install a 230 kV multi-step Reactor totaling 50.5 ohms, and associated equipment at Wilson Substation, on the Warnerville-Wilson 230 kV line

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Diablo Canyon Voltage Support Project

230 7/2019 .1 Install a +150/-75 MVAR Reactive support device at Diablo Canyon 230 kV Substation “

Estrella Substation 230 5/2019 .1 Construct a new Estrella 230/70 kV substation, with Breaker and a Half (BAAH) bus configuration , approximately 5 miles east of the existing Paso Robles Substation. Install one 45 MVA distribution 230/12 kV, 2 feeder breakers and associated outlets

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Monta Vista 230 kV Bus Upgrade

230 4/2020 .1 Install bus-sectionalizing and bus-parallel breakers on the Monta Vista 230 kV bus

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Lockeford-Lodi Area 230 kV Development

230 12/2022 .1 Construct new 15 mile 230 kV DCTL from Eight Mile Substation to Lockeford Substation

Midway-Andrew 230 kV 230 6/2025 .1 Upgrade existing 65 miles long Midway-Santa Maria 115KV line to 230kV “

Moraga-Potrero 230 kV Project

230 Cancelled .1 Establish a 230 kV connection between Moraga and Potrero Substations. “

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Wright Solar park 200 1/2018 .1 Interconnect a 200 MW (net output) solar-based generation facility to Los Banos – Panoche 230 kV Line No. 1 by looping in through a new PG&Eowned switching station. The new Switching Station is a 2-Bay, 5 Breaker 230 kV.

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Stockton Generation Expansion Project

508 Cancelled .1 Stockton Generation, LLC, proposing to interconnect two gas turbines and a steam turbine with a combined output of 508 MW. The proposed Commercial Operation Date of the project is May 1, 2014. The project will interconnect with PG&E’s Bellota – Tesla No. 2 and Weber-Tesla 230 kV transmission lines by looping these lines into a new switching station and require reconductoring of the Warnerville-Wilson 230 kV Line.

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Glenn 230/60 kV Transformer No. 1 Replacement

230/60 12/18 .1 Replace the existing 230/60 kV Transformer No. 1 and regulator atGlenn with a new 3-phase, 230/60 kV with a Load Tap Changer.

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Morgan Hill Area Project 230/115 5/2021 .1 Construct new 230/115 kV Spring Substation in Morgan Hill, with connections into the Metcalf-Moss Landing No. 2 230 kV Line and the Morgan Hill-Llagas 115 kV Line.

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Midway-Kern PP 230 kV #2 Line Project

230 7/2020 .1 Reconductor the Midway-Kern #1 230 kV Line, split it to Midway-Kern #1 and #2 230kV Lines, remove crosstie connections to splitthe Midway-Kern #1 Line into two circuits, reconductor theBakersfield #1 and #2 230 kV Taps, loop Bakersfield 230 kVsubstation, remove Stockdale 230 kV Tap #1 and #2 from theMidway-Kern lines and relocate to Kern PP 230 kV bus

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Central Valley Power Connect aka Gates-Gregg 230 kV New Line

230 12/2022(On Hold)

.1 Build new DCTL (roughly 60 miles) of Gates-Gregg 230 kV line and upgrade substation equipment.

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Panoche Valley Generation Interconnection Project

240 12/2017 .1 Interconnect a 240 MW (net output) of generation facility to a new PG&E owned 230kV switching station that loops into PG&E’s Moss Landing – Panoche andCoburn – Panoche 230 kV Lines. Construct a new 3 Bay, 8 breaker Switching station (BAAH)

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Tranquility Solar Generation Project

200 In Service .1 Interconnect a 200 megawatt (MW) (net output) of generation facility to a new PG&E owned 230 kV switching station that loops into PG&E’s Panoche– Helm and Panoche – Kearney 230 kV lines.

*

*California Flat Solar Generation Interconnection Project

280 7/2018 .1 Interconnect 280 MW solar generation to Morro Bay - Gates 230 kV Line Number 2.

Oakley Generation Interconnection Project

651 On hold5/2018

.1 To interconnect 651 MW of new generation, install a new 230 kV circuit breaker at Contra Costa Substation, install SPS at Contra Costa Substation, reconductor Contra Costa – Delta Pumps 230 kV Line, only east circuit, reconductor Las Positas – Newark 230 kV Line, only west circuit.

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Martin 230 kV bus Extension 230 4/2022 .1 Relocate the Jefferson-Martin 230 kV Line and one of the Martin-Embarcadero 230 kV Lines into a new 230 kV switchyard near Martin Substation.

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Eight Mile – Lodi Re-conductoring Economic project

230 9/2019 .1 Reconductor 2.3 miles of the Lodi - Eight Mile 230 kV Line with higher capacity conductors.

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Bellota 230kV substation Shunt Reactor

230 1/2019 .1 Install 100 MVar Shunt Reactor at Bellota 230 kV Substation *

Delevan 230 kV substation Shunt

230 2/2019 .1 Install 200 MVar Shunt Reactor at Delevan 230 kV Substation *

Los Esteros 230 kV Substation Shunt Reactor

230 5/2019 .1 Install 250 MVar Shunt Reactor at Los Esteros 230 kV *

Ignacio 230 kV substation shunt reactor

230 6/2020 .1 Install 150 MVar Shunt Reactor at Ignacio 230 kV Substation *

Q1032/ Tranquillity 8 200 12/2017 .1 The Project is a Photovoltaic generation and Battery Storage system with a total rated output of 200 MW to Pacific Gas and Electric Company’s (PG&E’s) 230kV Tranquillity BAAH Switchyard

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Other Transmission Projects – Granted Waiver of “Significant Transmission Project” Status

115/230 In-ServiceCancelled

3.5 LeGrand – Chowchilla 115 kV Reconductoring – in serviceCorina – Eagle Rock 115 kV Reconductor – cancelledNorth Valley and Sierra 230 kV line Capacity Increase – cancelled

Kang-Ling Ching415-973-7637

(PG&E)

SMUD Solano Wind Phase III Generation Interconnection Project

128 In-Service .3 The SMUD Solano Wind Project Phase III Generation Interconnection (the “Project”) consists of forty-four (44) wind turbine Generating Units each rated at 3 MW. The maximum net output to the CAISO Controlled Grid will be 128 MW. The step-up transformers are one three phase, 3.16 MVA, 1/34.5 kV for each wind turbine Generating Unit and one three-phase, 166 MVA, 34.5/230 kV for the total output of the Project. The Project will be connected to the existing Sacramento Municipal Utility District (SMUD) Russell Substation 230 kV bus which is connected to PG&E’s Birds Landing Switching Station 230 kV bus.

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Calpine Russell City Energy Center

600 In-Service .1 Interconnect 600 MW generation project to PG&E's East shore Substation 230 kV Bus. Convert bus. Replace transformer. Build 230 kV generation tie line.

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Green Ridge Wind Power Project

75 In-Service .3 Green Ridge Power, LLC is proposing to repower the Jackson Substation via Green Ridge Wind Power Generation Interconnection Project. This project will interconnect 75.1 MW (net output) wind power-based generation facility to the PG&E transmission system. Jackson Substation is currently interconnected onto PG&E’s Lone Tree-Cayetano 230 kV Line.

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Montezuma II Wind Generation Interconnection Project

78 In-Service .3 NextEra Energy Resources, LLC (NextEra), proposed to interconnect its Montezuma II Wind Project (The Project) to the California Independent System Operator Corporation (“CAISO”) Controlled Grid. The Project consists of 34 Siemens wind turbine generating units each rated at 2.3 MW with total output of 78.2 MW. This project proposes to interconnect to a new ring bus at the existing Montezuma Project (High Winds III) Substation.

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Franklin 230/69 kV bulk substation

230/69 5/2019 1 The existing Rancho Seco – Pocket 230 kV #2 line will be looped in to a new 230/69 kV bulk substation at Franklin, Sacramento County, to serve local load growth. Anticipated in-service date is 2018.

Patrick Truong916-732-5267

(SMUD)

Bay Blvd (formerly Bayfront) Substation Transmission Project

230/69 In-service .1 The Bay Blvd 230/69 kV Substation Transmission project is designed and constructed to better serve SDG&E local load and includes the following scope of work: 1) Construct a new 230/69 kV substation that will replace the existing South Bay 138/69 kV substation; 2) Install two 224 MVA 230/69 kV transformers; 3) Loop in the Miguel-Silvergate 230 kV transmission line into the new substation; 4) Transfer all 69 kV lines presently connected to the South Bay 138/69 kV substation to the new substation; and 5) Re-configure existing 138 kV lines to eliminate the need for the South Bay 138 kV bus.

David Wang858-654-8162

(SDGE)

South Orange County Reliability Enhancement Project

230/138 12/2020 .7 The project scope contains transmission and distribution work. The system changes required to accommodate the new Capistrano 230/138/12kV substation are as follows: a. Distribution

Rebuild the aging and obsolete distribution equipment (138kV & 12kV) at Capistrano substation using three new 138/12kV transformers (ultimate 4-138/12kV banks).

b. Substation Construct a new gas insulated (GIS) 230kV switchyard at the existing Capistrano substation with two 230/138kV transformers and a 230kV capacitor.

c. Transmission Construct two new 230kV circuits from Talega to Capistrano, one from SONGS and the other from Talega (tapping the existing TL23030 from Escondido), by rebuilding the existing TL13835 with double-circuit structures (8 miles between Talega and Capistrano). Terminate six adjacent 138kV lines at Capistrano sub.

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ECO 500/138 kV Substation 500/230/135 In-Service 1 This project will construct a 500/230/138kV substation near the Southwest Powerlink (SWPL), between Imperial Valley substation and Miguel substation, and it will extend a 138kV line from the new substation to the existing Boulevard substation. Also, the project will rebuild Boulevard substation on a neighboring site in order to accommodate generation interconnections at Boulevard. Scope of work include: a. Substation

i. Site preparation ii. Construction of the new 500/230/138kV substation iii. Site preparation for new Boulevard substation location (near or adjacent to existing site)

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iv. Construction (rebuild) of 138/12kV Boulevard substation on neighboring site b. Transmission

i. Loop SWPL into the new ECO substation. ii. Construction of a new 14-mile twin circuit 900 ACSS 138kV transmission line from the new ECO substation to rebuilt Boulevard substation.

c. Other i. Construction of new microwave communications facilities ii. ECO substation land purchase iii. Boulevard substation adjacent land purchase iv. Acquisition of a new ROW for the new 138kV transmission line

3rd 500/230 Transformer Bank (IV Bank 82) at Imperial Valley Substation

500/230 In-Service .5 1100 MVA This project will add 500/230 transformer at SDG&E’s Imperial Valley Substation. Scope of work include: a. Substation

i. Site preparation ii. Add 3rd 500/230 transformer at 1100MVA rating.

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Phase Shifting Transformer at Imperial Valley

5/2017 .1 *

Sycamore-Penasquitos 230 kV Line Project

230 4/2018 .5 1. Project Scopea. new 230 kV line connecting two substations, Sycamore andPenasquitos, owned by SDG&E within SDG&E control area.2. The estimated project In-Service-Date is June 2017.3. Project Status: CAISO approved4. Facility Owner: SDG&E in conjunction with and Citizen Energy5. No Regional Impact – This is an internal system upgrade that balances power flows among transmission lines into load centers with SDG&E control area. It has no impact on neighboring electric systems. SDG&E therefore requests a waiver from “Significant Transmission Project” status.

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Artesian 230 kV Expansion 230 3/20201 .5 1. Project Scopea. Expend Artesian 69 kV substation to 230/69 kV substation adding one230/69 kV transformerb. Loop in existing Sycamore – PEN 230 kv line at Artesian 230.2. The estimated project In-Service-Date is June 2016.3. Project Status: CAISO approved4. Facility Owner: SDG&E5. No Regional Impact – This is an internal system upgrade that providesadditional source to 69 kV system around Poway area. It has no impact onneighboring electric systems. SDG&E therefore requests a waiver from“Significant Transmission Project” status.

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New 230/69 kV Transformer at Mission

230 6/2018 .25 1. Project Scope: replace two 138/69 kV transformers with one 230/69 kVtransformer at SDG&E Mission Substation

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2. The estimated project In-Service-Date: June 20183. Project Status: CAISO approved4. Facility Owner: SDG&E5. No Regional Impact – This is an internal system upgrade that mitigates localcontingency overloads and provides better local voltage control. It has noimpact on neighboring electric systems. SDG&E therefore requests a waiverfrom “Significant Transmission Project” status.

Talega Synchronous Condenser

In-Service .25 1. Project Scope: 2x(+225/-120) MVAr synchronous condenser at TalegaSubstation.2. The estimated project In-Service-Date: June 20153. Project Status: CAISO approved4. Facility Owner: SDG&E5. No Regional Impact – This is an internal system upgrade that providesneeded voltage support. It has no impact on neighboring electric systems.SDG&E therefore requests a waiver from “Significant Transmission Project”status.

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Miguel Synchronous Condenser

12/2017 .2 1. Project Scope: MVAr synchronous condenser at MiguelSubstation.2. The estimated project In-Service-Date: March 20173. Project Status: CAISO approved4. Facility Owner: SDG&E5. No Regional Impact – This is an internal system upgrade that providesneeded voltage support. It has no impact on neighboring electric systems.SDG&E therefore requests a waiver from “Significant Transmission Project”status.

SONGSMESA Synchronous Condenser

12/2017 .33 1. Project Scope: 2x(+225/-120) synchronous condenser at SDG&ESONGSMESA Substation/Switchyard that would be built near existing SanOnofre Substation.2. The estimated project In-Service-Date: June 2017 or 20183. Project Status: CAISO approved4. Facility Owner: SDG&E5. No Regional Impact – This is an internal system upgrade that providesneeded voltage support. It has no impact on neighboring electric systems.SDG&E therefore requests a waiver from “Significant Transmission Project”status.

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San Luis Rey Synchronous Condenser

5/2017 .33 1. Project Scope: 2x(+225/-120) MVAr synchronous condenser at SDG&E SanLuis Rey Substation2. The estimated project In-Service-Date: June 20163. Project Status: CAISO approved4. Facility Owner: SDG&E5. No Regional Impact – This is an internal system upgrade that providesneeded voltage support. It has no impact on neighboring electric systems.

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SDG&E therefore requests a waiver from “Significant Transmission Project”status.

Shunt Reactor at Suncrest In-Service .33 1. Project Scope: Install three single phase reactors at Suncrest Substation andconnect to the 500 kV bus. Each reactor will be rated 46 MVar at 317.5 kVphase to ground for a three phase total of 138 MVar at 550 kV.2. The estimated project In-Service-Date: June 20143. Project Status: Submitted for information only to CAISO as part of SDG&E’s2013 Grid Assessment plan.4. Facility Owner: SDG&E5. No Regional Impact – This is an internal system upgrade that providesneeded voltage control within SDG&E’s service territory and has no impact onneighboring electric systems. SDG&E therefore requests a waiver from“Significant Transmission Project” status.

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Mission to Penasquitos 230 kV

230 6/2019 .2 1. Project Scope: build a new 230kV line from Mission 230 to Penasquitos 230. 2. The estimated project In-Service-Date: June 2019 3. Project Status: CAISO approved 4. Facility Owner: SDG&E 5. No Regional Impact – This is an internal system upgrade that provides needed support for serving load with SDG&E control area. SDG&E therefore requests a waiver from “Significant Transmission Project” status.

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Miguel to Bay Blvd 230 kV #2 230 6/2019 .2 1. Project Scope: Add a new 10 mile 230kV line from Miguel 230 to Bay Blvd 230 on existing overhead structure. 2. The estimated project In-Service-Date: June 2019 3. Project Status: CAISO approved 4. Facility Owner: SDG&E 5. No Regional Impact – This is an internal system upgrade that provides needed support for serving load with SDG&E control area. SDG&E therefore requests a waiver from “Significant Transmission Project” status.

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3rd 230/69 kV Transformer at Bay Blvd Substation

230/69 6/2018 .2 1. Project Scope: Add a new 3rd 230/69 kV transformer at Bay Blvd 230 Substation. 2. The estimated project In-Service-Date: June 2018 3. Project Status: CAISO approved 4. Facility Owner: SDG&E 5. No Regional Impact – This is an internal system upgrade that provides needed support for serving load with SDG&E control area. SDG&E therefore requests a waiver from “Significant Transmission Project” status.

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Tehachapi Renewable Transmission Project

500/230 In-Service .05 Change the description to – Construct the following 500 kV and 220 kV transmission facilitiesneeded to connect 4500 MW renewable generation in the Tehachapi area: Antelope-Pardee 220 kV (In-Service)

CJ Jing909-274-1613

(SCE)

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WindHub 500/220 kV Substation (In-Service) Antelope-Vincent 500 kV (In-Service) Antelope – WindHub 500 kV (In-Service) Antelope – Vincent 500 kV #2 (In-Service) Whirlwind 500/220 kV sub with loop-in of Midway – Vincent #3 500 kV (In-Service) Antelope – Whirlwind 500 kV (In-Service) WindHub 500 kV, Antelope 500 kV and Vincent 500/220 kV upgrades Whirlwind – WindHub 500 kV (In-Service) Vincent – Rio Hondo 500 kV (Energized at 220 kV) Vincent – Mira Loma 500 kV (in-Service) Vincent – Mesa 500 kV (Energized at 220 kV)

Alberhill 500/115 kV Substation

500/115 6/2021 .05 Develop a new 1120 MVA Alberhill 500/115 kV Substation and associated transmission lines. Construct a new 500/115 kV transmission substation (Alberhill Substation), connecting SCE’s existing Serrano-Valley 500 kV transmission line into the new Alberhill Substation with two new 500 kV line segments. Construct a new 115 kV subtransmission line and modifications to existing 115 kV subtransmission lines.

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Wildlife (formerly Jurupa) 230 kV Substation

230 7/2023 .1 Develop a 560 MVA Wilderness 220 kV Substation for Riverside. Loop the existing Mira Loma-Vista 220 kV #1 line and construct about 7 miles of double circuit T/Ls to Wilderness 220 kV that provides a method of service to a new substation that will serve the City of Riverside.

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Riverside 220 kV Interconnection

220 7/2023 .1 The project will be constructed at the same time as and adjacent to Wildlife 230 kV Substation project and will be tied to Wildlife 230 kV.

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West of Devers (WOD) Upgrade Project

230 8/2021 .1 Upgrade four (five with El Casco Substation loop-in) 220 kV lines on the west side of Devers 220 kV substation to 2B-1590 ACSR conductor.

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Valley-Serrano 500 kV #2 Transmission Line

500 6/2030 .05 Construct a second Valley-Serrano 500 kV transmission line to provide load service capacity.

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North of Magunden Long Term Plan

6/2030 .05 Master Plan to build transmission lines and substations to serve load in San Joaquin Valley area.

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Mesa 500/230 kV Substation 500/230 6/2021 .05 Develop a new 500/230 kV Substation equipped with 2 x 1120 MVA transformers. “

Lighthipe 500/230 kV Substation

500/230 6/2031 .05 Develop a new 500/230 kV Substation equipped with 2 x 1120 MVA transformers. “

Manzana Wind 300 3/2018 .1 Interconnect a 300 MW Wind Generating Facility to SCE's Whirlwind 220 kV Substation. Project is being phased in that will be completed by the operating date.

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Blythe Solar Power 485 12/2020 .1 The photovoltaic generating facility has been modified to consist of seventy-two (72)GE 4.0 MW, WTG, one hundred and fourteen (114) GE 2.0 MW, WTG, fourteen (14) GE 1.4 MW, WTG, one (1) GE 1.0 MW, WTG, six (6) SMA 1.85 MVA, and two (2) SMA

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0.5 MVA inverters. The in-service dates for each phase of the project has been modified as follows: Phase 1 – In-Service Phase 2 – In-Service Phase 3 – December 31, 2020 Phase 4 – December 31, 2020

Palen Solar 500 12/2020 .1 Description: New 500 MW generating facility with a change in technology from solar thermal to solar PV. Point of Interconnection: Red Bluff 220 kV bus via dedicated 220 kV gen-tie Status: Planned operating date December 31, 2020

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Genesis-McCoy Solar Project 500 In-Service .1 Interconnect a 500 MW Solar Generating Facility to SCE's expanded Colorado River 500/220 kV Substation.

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Pacific Wind Project 140 In- Service .1 Interconnect a 250 MW Wind Generating Facility to SCE's Whirlwind 220 kV Substation. Project is being phased in that will be completed by the operating date.

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Alta 2012 Project 720 6/2017 .1 Interconnect a 720 MW Wind Generating Facility to SCE's Windhub 220 kV Substation. Project is being phased in that will be completed by the operating date.

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North Sky River Wind Project 297 In-Service Interconnect a 297 MW Wind Generating Facility to SCE's Highwind 220 kV Substation. Project is being phased in that will be completed by the operating date.

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Avalon Hybrid Project 340 12/2019 .1 Hybrid solar photovoltaic (100 MW) and wind (240 MW) generation facilityconsisting of 208 Sunny Central inverters each rated at 0.5 MW at the inverter terminal and 160 GE wind turbines generators (WTGs) each rated at 1. 5 MW at the WTG terminal. The project design involved developing the project in three separately metered phases (one for photovoltaic and two for wind) with one main 230/34.5 kV transformer bank used for each phase (total of three main transformer banks).Point of Interconnection: Whirlwind 220 kV bus via dedicated radial gen-tie

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Antelope Valley Solar PV 1 300 12/2018 .1 New 300 MW solar photovoltaic generating facility (net at the POI) consisting of150 SunPower Inverters (SMA or equivalent) each rated at 2.045 MW at the inverter terminal. The project will be constructed in five separately metered phases with one main 230/34.5 kV transformer bank used for each phase (total of five main transformer banks).Point of Interconnection: Whirlwind 220 kV busDate: Planned operating date for each phase is as follows: Phase 1 – in service Phase 2 – in service Phase 3 – December 1, 2017 Phase 4 – December 1, 2017

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Phase 5 – December 1, 2018

SP Antelope DSR 330 6/2017 .1 New 330 MW solar photovoltaic generating facility consisting of 330 AdvancedEnergy Inverters each rated at 1.0 MW at the inverter terminal. The project will be constructed in eleven phases utilizing a total of nine main 230/34.5 kV transformer banks.Point of Interconnection: Whirlwind 220 kV bus via dedicated gen-tieStatus: Planned operating date for each phase is as follows: Phases 1 to 4 – In service Phases 5 to 7 – in service Phase 8 to 11 – mid 2017

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SCE Owned Eldorado 500/220 kV 5AA-Bank

500/220 kV In-Service .1 Install a new 500/220 kV AA-bank at Eldorado Substation connected to the SCE-owned Eldorado 220 kV switchyard. Desert Stateline and Silver State South triggered the need for this AA-bank.

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Catalina Wind Project 150 12/2020 Interconnect a 150 MW Wind Generating Facility to SCE's Whirlwind 220 kV Substation via a shared generation tie line with the Pacific Wind Project. Project is being phased in that will be completed by the operating date.

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Eldorado-Lugo Series Cap Upgrade & Lugo-Mohave Series Cap Upgrade

6/2020 .1 Upgrade series capacitor and terminal equipment at Eldorado and Lugo to3800A/4000A (SN/SE) and Upgrade series capacitor and terminal equipment at Mohave to 3800A/4000A

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Whirlwind 3rd 500/220 kV Transformer Bank

500/220 3/2017 .1 Add a third transformer bank at the existing Whirlwind Substation to add capacityto deliver new renewable generation interconnecting to the 220kV bus.

Victor Loop in Project 230 12/2017 .1 Loop-in the Kramer-Lugo 230 kV No. 1 and No. 2 lines into Victor Substation creating Kramer-Victor 230 kV No. 1 and No. 2 and Lugo-Victor 230 kV No. 1 and No. 2.

Alta Wind Q97 160 cancelled .1 Interconnect a 160 MW Wind Generating Facility to SCE’s Whirlwind 220 Substation via a generation tie line shared with Alta Wind Q153.

Alta Wind Q153 100 cancelled .1 Interconnect a 100 MW Wind Generating Facility to SCE’s Whirlwind 220 Substation via a generation tie line shared with Alta Wind Q97.

Kramer High Voltage Mitigation – Tertiary and Bus Shunt Reactors

2016-17 .1 This project includes Phase 1 and Phase 2. Phase 1: Installs two (2) 34 MVAR reactors to the 12 kV tertiary winding of the existing 230/115 kV No.1 and No.2 transformer anks. Phase 2: Installs one (1) 230kV 45 MVAR bus shunt reactor at the 230 kV bus at Kramer Substation

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Sonoran and Sonoran 2 570 1/2021 .2 New 570 MW combined-cycle generating facility consisting of two natural gasfired *

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combustion turbines, each rated at 285 MA, and one steam turbine generating unit rated at 405 MVA. Each natural gas-fired combustion turbine generator will have a 500/16 kV main transformer bank and the steam turbine generator will have a 500/19 kV main transformer bank. Point of Interconnection: Colorado River 500 kV bus via dedicated 500 kV gen-tieChange in technology and output size from a 570 MW combined-cycle generating facility to 553 MW PV solar facility. Change the operating date to 1/2021

Palmdale Power Plant 570 5/2021 .2 New 570 MW generating facility consisting of two combustion gas turbinegenerators feeding a single steam turbine generator and an integrated solar thermal system used for additional steam production. Each turbine generator will be connected utilizing a main 230/18 kV transformer bank (total of three main transformer banks).Point of Interconnection: Vincent 220 kV bus

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Willow Springs 2 100 12/2018 .2 New 100 MW solar photovoltaic generating facility consisting of 160 Inverters eachrated at 0.63 MW at the inverter terminal. The project will utilize a single 230/34.5 kV main transformer bank and will be sharing a generation tie line with generation project Q643R.Point of Interconnection: Whirlwind 220 kV bus via shared gen-tie

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North Rosamond 153 12/2018 .2 New 153 MW solar photovoltaic generating facility consisting of 248 Inverters eachrated at 0.63 MW at the inverter terminal. The project will utilize two 230/34.5 kV main transformer banks and will be sharing a generation tie line with generation project Q643AJ.Point of Interconnection: Whirlwind 220 kV bus via shared gen-tie

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RE Astoria 175 In-service .2 New 175 MW solar photovoltaic generating facility consisting of 46 GE ProSolarInverters each rated at 4.0 MW at the inverter terminal. The project utilize a two 230/34.5 kV main transformer banks and will be sharing a generation tie line with Q971 generation project.Point of Interconnection: Whirlwind 220 kV bus via shared gen-tie

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King Bird Solar A 20 In-service .2 New 20 MW solar photovoltaic generating facility consisting of 5 GE ProSolarInverters each with an individual output of 4.145 MW at the inverter terminal. The project will utilize a single 230/34.5 kV main transformer bank and will be sharing a generation tie line with an existing generation project already in-service and with generation project Q796.Point of Interconnection: Whirlwind 220 kV bus via shared gen-tie

*

King Bird Solar B 20 In-Service .2 New 20 MW solar photovoltaic generating facility consisting of 5 GE ProSolarInverters each with an individual output of 4.145 MW at the inverter terminal. The project will utilize a single 230/34.5 kV main transformer bank and will be sharing a generation tie line with an existing generation project already in-service and with generation project Q796.Point of Interconnection: Whirlwind 220 kV bus via shared gen-tie

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RE Garland 200 In-Service .2 New 200 MW solar photovoltaic generating facility consisting of 112 TMEICInverters with 111 rated at 1.833 MW and 1 rated at 1.667 MW at the inverter terminal. Theproject will utilize a three 230/34.5 kV main transformer banks and be sharing a generation tieline with Q746 generation project.Point of Interconnection: Whirlwind 220 kV bus via shared gen-tie

*

Mojave Solar Project – Q125 (known as the Abengoa Mojave Solar Project)

275 In-Service .2 Update Description: New 275 MW solar thermal generating facility consisting of two solar concentrated steam turbines, each rated at 167 MVA, and two 220/13.8 kV main transformer banks. The project utilizes two gen-ties, one for each main transformer bank connecting one steam turbine generator, and connects to the new Sandlot 220 kV switching station. The Sandlot switching station is served via two 220 kV lines under radial lines agreement.Point of Interconnection: Kramer 220 kV bus via 220 kV lines under radial lines agreementProject has been placed into service.

*

SVP Phase Shifting Transformer Project (SVP-PST)

230 2014 2 400 MVA SVP will install a 400 MVA, 230/230 kV phase shifting transformer in the SVP SSS station, located adjacent to the PG&E Los Esteros Substation in Santa Clara County, California. The transformer will be placed in series with the SSS-NRS 230 kV circuit. A 4 ohm series reactor will also be installed between the bus sections of the SVP NRS 115 kV bus to allow for closing the currently open 115 kV bus tie. SVP is currently coordinating with Pacific Gas and Electric Company to determine what electric system improvements, if any, may be needed on its system.

Orville Plum(408)261-5470Silicon Valley

Power(SVP)

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Attachment I

Member Systems reporting significant facilities* in the 2015 Annual Progress reports to WECC from which, as of May 4, 2017, no report has been received:

1. Lucky Corridor2. Sea Breeze Pacific RTS3. NV Energy South4. TCP5. Wyoming Colorado Intertie6. Sithe Global7. LS Power8. Southline Transmission Project9. Centennial West Clean Line LLC.10. Tres Amigas11. VEA12. ANHM13. CFE14. CISO15. The Nevada Hydro Company16. Mirant Marsh Landing17. NCPA

* Projects listed as “In service” will be removed from the next issue of this log.

Attachment II

Member Systems previously reporting significant facilities* in the WECC Transmission Database from which, as of May 4, 2017, no report has been received:

1. Northwest Alberta Transmission System Reinforcement (2011-12) AESO2. 9L15 termination into Livock AESO3. Northwest Alberta Transmission System Reinforcement (2015-17) AESO4. Southeast Transmission Reinforcement (SETR) AESO5. Yellowhead Area Transmission Development – P671 AESO6. Livock 240/144 kV Connection – P834 AESO7. Fidler 312S 240/138 kV Interconnection – P936 AESO8. Northeast Fort McMurray 240 kV Loop – P791 AESO9. Halkirk 1 Wind Project – P723 AESO10. Christina Lake Area Development AESO11. Algar 240/144 kV substation AESO12. Algar-Kinosis 240 kV line AESO13. Alberta Industrial Heartland Bulk Transmission Development – State 2 AESO14. P1118 – Foothills Area Transmission West Calgary Development AESO15. C-Free Power Oven Wind-P763 AESO16. Edmonton - Calgary West DC Lline – P962 AESO17. Edmonton - Calgary East DC Lline – P961 AESO18. Bow City Power Project-P465 AESO19. Pikani Energy Corp. Wind-P773 AESO20. Vindt Willowridge – P614 AESO21. Bloodtribe Wild Turnip Hill AESO22. P635 - Suncor Hand Hills Wind Energy Project AESO23. P678 - Nexen Hand Hills Wind Project AESO24. P812 - Hanna Region Transmission Development AESO25. New Fidler 312S Substation – Project 1343 AESO26. Project 1591 - Fort McMurray 4.1.1 East 500 kV Line AESO27. Lucky Corridor Transmission Project Lucky Corridor28. Current Creek PAC29. Whetstone 230/115 kV substation PAC30. Mid Valley Substation Preplace 345-138 kV PAC31. Huntington-Mona 345 kV Series Reactor PAC32. PAC east and West Future Generation Projects PAC33. Casper Substation install 230/115 Transformer PAC34. St George Substation install 345/138 kV Transformer PAC35. Table Mountain 500/230 kV Substation PAC36. Planned Gernation Interconnection projects PAC37. Sea Breeze Pacific Regional Transmission System Sea Breeze38. Sea Breeze Pacific – West Coast Cable Project Sea Breeze39. Sea Breeze Pacific – Juan de Fuca Cable Project (jdF) Sea Breeze40. Canyon Substation / Switching Station TCP


41. Chinook Project TCP42. Navajo Transmission Project Segment 1 Sithe Global43. Great Basin Transmission SWIP – South Project LS Power44. Great Basin Transmission SWIP – North Project LS Power45. Centennial West Clean Line HVDC Project Centennial West46. Willow 345 kV Switchyard TEP47. Tortolita -Winchester 500 kV line TEP48. Winchester – Vail #2 and #3 345 kV Lines TEP49. Tres Amigas Super Station50. Desert View – NVE Northwest 230 kV Line VEA51. Stirling Mountain – Vista VEA52. Vista – Charleston VEA53. Vista – Pahrump VEA54. Desert View 230 kV Metering Station VEA55. Stirling Mountain – Desert View 230 kV Line VEA56. Canyon Power Project ANHM57. Generation Projects CISO

Devers SubstationTesla SubstationEl Segundo 220 kV bus Devers-Palo Verde 500 kV line near Blythe McCall Substation Eastshore Substation Between Cottonwood and Vaca-Dixon Walnut Substation Imperial Valley Substation

58. Talega-Escondido/Valley-Serrano 500 kV Interconnect Project(TE/VS Interconnect) The Nevada Hydro Company

59. SVP Phase Shifting Transformer Project SVP


Attachment III

List of Projects Requesting A Waiver of “Significant Transmission Project” Status for 2016

Project Name Organization1. Raver 500/230 kV Transformer Addition Project BPA2. McNary 500/230 kV transformer Addition Project BPA3. Longview Area 230/115 kV Transformer Addition BPA4. Front Range Power Plant to Nixon-Kelker (NX-KE) Line #2 CSU5. Warnerville Substation Upgrade HHWP6. Midpoint T232 230/138 kV Transformer Addition Project IPC7. Upgrade Terminal equipment on Northridge-Tarzana 230 kV line 1 LADWP8. Reconductor Haskell Canyon – Rinaldi 230 kV line 1 LADWP9. New Barren Ridge – Haskell Canyon 230 kV line 2 and 3 LADWP10. Install New Scattergood – Olympic 230 kV Cable A LADWP11. Reconductor Barren Ridge – Haskell Canyon 230 kV line LADWP12. New Castaic – Haskell Canyon 230 kV line 3 LADWP13. Reconductor Both Valley – Rinaldi 230 kV lines LADWP14. Reconductor Valley – Toluca 230 kV line 1 and 2 LADWP15. Reconductor both Rinaldi -Tarzana 230 kV lines LADWP16. Convert PP1 and PP2 – Olive 115 kV lines to Haskell Cny- Sylmar 230 kV LADWP17. Add a second Victorville 500/287 kV Transformer Bank LADWP18. Replace Toluca 500/230 kV Bank H LADWP19. Barren Ridge Renewable Transmission Project LADWP20. Beacon Solar LADWP21. Copper Mountain Solar 3 LADWP22. Moapa K- Road Solar LADWP23. Recinco Solar LADWP24. Spring Bok 1, 2, and 3 LADWP25. Syracuse –Install 345/138 kV #2 Transformer PAC26. Red Butte Transformer PAC27. Spanish Fork 345 kV substation Circuit Breaker Additions PAC28. Converse County, WY Planned Generation Interconnection Projects PAC29. Umatilla, OR Planned Generation Interconnection Projects PAC30. Klamath, OR Planned Generation Interconnection Projects PAC31. Martin 230 kV Bus Extension PG&E32. Eight Mile – Lodi Reconductoring Economic Project PG&E33. Blue Lake/Gresham 230 kV Project PGE34. Horizon Phase II Project PGE35. Harborton Reliability Project PGE36. Carty Generation Station PGE37. Northern Greeley Transmission PSCO38. Southern Greeley Transmission PSCO39. Laporte 230 kV Substation Expansion PRPA40. Boyd 230/115kV Transformer Addition Project PRPA41. Eastside 230 kV Transformer Addition and Line PSE


42. Pierce County Transformer Addition and Line Reroutes PSE43. West Kitsap Transmission Project Phase II PSE44. Bothell – SnoKing 230 kV lines SCL45. Delridge – Duwamish 230 kV line SCL46. Mission to Penasquitos 230 kV New Circuit SDGE47. Miguel to Bay Blvd 230 kV #2 SDGE48. 3rd 230/69 kV Transfomer at Bay Blvd Substation SDGE49. Beverly Park 230/115 kV transformer SNPD50. Abel – Pfister - Ball 230kV line SRP51. Torreon 345/115 kV stubstation Project TSGT


Attachment IV

List of Projects Requesting A Waiver of “Significant Transmission Project” Status for 2017

Project Name Organization1. Sagebrush 230 kV substation BHP2. Raver 500/230 kV Transformer Addition Project BPA3. McNary 500/230 kV transformer Addition Project BPA4. Longview Area 230/115 kV Transformer Addition BPA5. Front Range Power Plant to Nixon-Kelker (NX-KE) Line #2 CSU6. Midpoint T232 230/138 kV Transformer Replacement Project IPC7. Borah-Populus 345kV Ckt #1 Series Capacitor Replacement Project IPC8. Kinport-Populus 345kV Series Capacitor Replacement Project IPC9. Cloverdale 230/138kV Transformer Project IPC10. Cloverdale – Hubbard 230kV Transmission Line Project IPC11. King-Wood River 138kV Transmission Line Rebuild IPC12. Willis-Lansing-Star 138kV Transmission Line Project IPC13. Boulder Solar Interconnection Facility NVE14. Goshen Spare 345/161 kV Transformer PAC15. Convers County, WY PAC16. Klamath, OR PAC17. Bellota 230 kV Substation Shunt Reactor PG&E18. Delevan 230 kV Substation Shunt Reactor PG&E19. Los Esteros 230 kV Substation Shunt Reactor PG&E20. Ignacio 230 kV Substation Shunt Reactor PG&E21. Ignacio 230 kV Substation Shunt Reactor PG&E22. Cabezon 345 kV station PNM23. Clines Corners 345 kV station PNM24. Guadalupe SVC PNM25. Copper Crossing – Abel 230 kV SRP


2017 annual progress report summary · web viewthe conductor will be 1590 acsr/tw and is expected...

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