aps/srp stakeholder meeting for transmission planning ferc order 890 oatt attachment k (aps...

APS/SRP Stakeholder MeetingFor Transmission Planning

FERC Order 890 OATT Attachment K

(APS Attachment E)

APS Transmission PlanningSRP Transmission PlanningPhoenix, ArizonaJune 24, 2010

1. Welcome, Introductions, and Meeting Overview2. Status of Action Items-12/18/09 Joint APS/SRP 4th Quarter Public Planning Meeting 3. APS Planning

a. APS Planning Calendar & Methodologyb. APS Filed Ten-Year Plan and Renewable Transmission Projects Reviewc. 2010 Study Assumptionsd. Interconnection Requests and Transmission Service Requestse. Requests received for Economic Planning Studiesf. Stakeholders invited to submit requests for additional transmission studiesg. Comments/Questions

4. SRP Planninga. SRP Planning Calendar & Methodologyb. SRP Filed Ten-Year Plan Reviewc. SRP Transmission Projects for Renewable Generationd. Interconnection Requests and Transmission Service Requestse. Requests Received for Economic Planning Studiesf. Stakeholders invited to submit requests for additional transmission studiesg. Comments/Questions

5. Current Activities Update6. Stakeholder Questions/Comments7. Action Items

2

Agenda

2June 24, 2010 APS & SRP 2nd Quarter Stakeholder Meeting

3

Welcome

Introductions

Meeting Overview

June 24, 2010 APS & SRP 2nd Quarter Stakeholder Meeting

4

2. Status of Action ItemsRequest the Operating Agent for JPP (Joint

Participation Projects) to include the other owners on OASIS. Interconnection Queues are FERC mandated

documents and do not include owners for JPPs

Request APS and SRP to explore opportunities to consolidate or coordinate the Order 890 Stakeholder meetings with other scheduled meetings. Ongoing


5

3.a. APS Planning Calendar & Methodology

WECC/TEPPC/WestConnect Planning Calendar

APS Planning CalendarPlanning Process/Methodology


6

2010 Synchronized Study Plan

J an Feb Mar Apr May J un J ul Aug Sep Oct Nov Dec

WestConnectStudy results

TEPPCResults including

Economics studies

SWAT Study results

WECCTEPPC

Economic Studies Submittal

Deadlinefor 2010

10yr Planning studies Filing

w/ACC

BTA study results

Even # years

Base Cases Preparation For

10yr Plan 10yr Plan Study results

Study Work

10yr plansSubregional SWAT groupsWestconnect GroupWECC PCCWECC-TEPPC

J an

WECC PCC / WECC - TEPPC / WESTCONNECT

Deadline for submitting request for 2011

Economic Studies WECC / TEPPC

WECC / TEPPCEconomic Studies

Submittal Deadlinefor 2011

WECC/PCC Annual Study Program

Completed

2nd Qtr Stakeholder

Meeting

4th Qtr Stakeholder

Meeting

WestConnect Plan Approved

SWAT Study Plans

Approved


7

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

10yr Plan – Filed with ACC by Jan. 31 10yr. Plans filed by others

APS Corporate Load Forecast

Stakeholder Input

APS Corporate Load Forecast – Post Summer

Sep. 1 – Network Transmission Customers and all other Transmission Customers Load &

Resource Forecast

10yr. Plan – New load forecast sensitivity

WestConnect Coordinated base case

development

Develop 10yr base cases from AZ seed cases

10yr. Plan study effort – Determination of projects, timings, and scope

4th Quarter Stakeholder Meeting – Review draft of current 10yr plan, discussion Economic Study

requests, receive stakeholder input

Planning Calendar for Ten-Year Planning CycleAPS Transmission Planning – 10 Yr

Plan

Arizona Utilities coordinated seed case development – from WestConnect cases

2nd Quarter Stakeholder Meeting – Stakeholder input on studies, request study alternatives,

updates on current projects

Other Subregional Coordination

Activities Throughout the Year

· APS/SRP Coordination Meeting

· APS/WAPA Coordination Meeting

· WestConnect Meetings· SWAT Meetingso CATS-EHVo CATS-HVo CRTo AZ/NMo SATSo Renewableso Short-circuit Working

Group

Oct. 31 – Deadline to submit Economic Study Requests for 4th Quarter Meeting review


8

What Type of Study?1

Does Transmission Provider’s system

meetNERC/WECC

criteria?

No

Does Transmission Provider’s system meet local reliability criteria?

Yes

Transmission Provider determines facilities

needed with Stakeholder input

No

Transmission Provider coordinates with Sub-

Regional Planning Group

Yes

Economic Reliability

Transmission Provider

Evaluation

Regional

TEPPC evaluates with Stakeholder

input

Transmission Provider Economic

Study

Customer Choice of Study at Customer’s

expense

Local2

TEPPC determines high priority, performs

study

High priority

Not high priority

TEPPC determines not

high priority

Study results documented in a report and reviewed

by Customer and Transmission Provider



1. Generator Interconnection Request studies are performed pursuant to the Large Generator Interconnection Procedure contained in the Transmission Provider’s Open Access Transmission Tariff (OATT). Transmission Service Requests are also performed pursuant to OATT procedures.

2. All requests for economic planning studies received by the Transmission Provider are forwarded to TEPPC for inclusion in the TEPPC Master List. TEPPC will evaluate only those requests that have regional impacts.

Transmission Planning Process

Exhibit 1 – APS Attachment E


9

3.b. APS Ten Year Plan Projects 2010-2019

Transmission Plan Filed on Jan. 29, 2010


10

2009 (In-Service): Dugas & Sugarloaf 500/69kV

substations Milligan 230/69kV substation2010: Morgan 500/230kV substation (In-

Service) Morgan-Pinnacle Peak 500kV line2012: Delany-Palo Verde 500kV line Flagstaff 345/69kV substation TS12 230/69kV substation2013: Mazatzal 345/69kV substation2014: Delany-Sun Valley 500kV line Hassayampa-N.Gila 500kV line D. Basin-Pinal Central 230kV line Pinal Central-Sundance 230kV line Bagdad 115kV relocation2016: Sun Valley-Morgan 500kV line

APS EHV & OUTER DIVISION 115/230 KVTRANSMISSION PLANS 2010 - 2019

SELIGMAN

ROUND VALLEY

POWER PLANT

115KV & ABOVE SUBSTATION (EXISTING)

230KV & ABOVE SUBSTATION (FUTURE)

LEGEND

NORTH

ADAMS

MURAL

SAN MANUELORACLEJUNCTION

SAGUARO

N.GILA

PALO VERDE-HASSAYAMPA

YUCCA

GILA BEND

REDHAWK

JOJOBA

GILA RIVER/PANDA

RUDD

LIBERTY

KYRENE

SANTAROSA

2013WESTWING

BAGDAD

YAVAPAI VERDE

2016PINNACLE

PEAK

PREACHERCANYON

CHOLLA

TO ELDORADO

TO CRYSTAL

TO MEAD /MARKETPLACE

MOENKOPI

NAVAJO

2014

MAZATZAL

COCONINO

Substation locations and line routings depict an electrical connection only and do not reflect any assumed physical locations or routing.

CASA GRANDE

TAT MOMOLI

KNOX

SUN VALLEY2014

GAVILANPEAK

FLAGSTAFF(WAPA)

TO GLENCANYON (WAPA)

SUGARLOAF

MORGAN

EXISTING 500 KV LINESEXISTING 345 KV LINES

EXISTING 230 KV LINES

EXISTING 115 KV LINES

PLANNED 500KV LINES NUCLEAR POWER PLANT

2 circuits

WILLOWLAKE

PLANNED 230KV LINES

2010

CORONADO

FLAGSTAFF(APS)

2012

DUGAS

PINAL CENTRAL

SUNDANCE

2014

Milligan

2014

COOLIDGE

VALLEY FARMS

HARQUAHALA

DELANY2012

TS122012

TO IMPERIAL VALLEY

FOURCORNERS

DESERTBASIN

TBD

Line Relocation

2014


11

PHOENIX METROPOLITAN AREA TRANSMISSION PLANS 2010-2019

10

1

101

10

1

30

3

303

BELL RD.

I - 10 FWY .

I-1

7 F

WY

.

SURPRISE

AGUA FRIA

EL SOL

DEER VALLEY

RUDD

TO PALO VERDE

WESTPHOENIX

TOPALO VERDE

WESTWING

Carefree Hwy.MORGAN

BUCK EY E

Panda

To NavajoTo NewWaddell

WHITE TANK S

BASELINE RD.

LIBERTY/TS4

BELL RD.

I - 10 FWY .

SUPERSTITION FWYBASELINE RD.

PINNACLEPEAK

CACTUS

OCOTILLO

K Y RENE

TO J OJ OBA

K NOX

TO SANTA ROSA

REACH

LONE PEAK

SUNNY SLOPE

MEADOWBROOK

LINCOLN ST.

COUNTRY CLUB

ALEXANDER

To Prescott

TOCHOLLA

APS PLANNED LINES230K V500K V

230K V SUBSTATION (EXISTING)

230K V SUBSTATION (FUTURE)

GENERATING SITE &230K V SUBSTATION

APS EXISTING 230K V LINES

Substations locations and line routings are approximate

GLENDALE

AVERYTBD

2011

2011

2010

Scatter Wash2014

GAVILANPEAK

J OINTLY OWNED EXISTING 500K V LINESAPS EXISTING 345K V LINES

I-1

7 F

WY

.

PIM

A R

D.

2016

TRILBY WASH20142014

SUN VALLEY2014

2015

PALM VALLEY

2015

TS2

TODELANY

TB

DT

BD

TBD

2014

TO BROWNING

TOGLEN

CANY ON

230kV LINES OWNED BY SRP OR WAPA

J OJ OBATBD

TBD

TB

D

TBD

TB

DTBD

TS10TBD

TS11

TB

D

TBD

345kV LINES OWNED BY WAPA

RACEWAY2010


12

PHOENIX METROPOLITAN AREA TRANSMISSION PLANS 2010-2019

10

1

101

10

1

30

3

303

BELL RD.

I - 10 FWY .

I-1

7 F

WY

.

SURPRISE

AGUA FRIA

EL SOL

DEER VALLEY

RUDD

TO PALO VERDE

WESTPHOENIX

TOPALO VERDE

WESTWING

Carefree Hwy.MORGAN

BUCK EY E

Panda

To NavajoTo NewWaddell

WHITE TANK S

BASELINE RD.

LIBERTY/TS4

BELL RD.

I - 10 FWY .

SUPERSTITION FWYBASELINE RD.

PINNACLEPEAK

CACTUS

OCOTILLO

K Y RENE

TO J OJ OBA

K NOX

TO SANTA ROSA

REACH

LONE PEAK

SUNNY SLOPE

MEADOWBROOK

LINCOLN ST.

COUNTRY CLUB

ALEXANDER

To Prescott

TOCHOLLA

APS PLANNED LINES230K V500K V

230K V SUBSTATION (EXISTING)

230K V SUBSTATION (FUTURE)

GENERATING SITE &230K V SUBSTATION

APS EXISTING 230K V LINES

Substations locations and line routings are approximate

GLENDALE

AVERYTBD

2011

2011

2010

Scatter Wash2014

GAVILANPEAK

J OINTLY OWNED EXISTING 500K V LINESAPS EXISTING 345K V LINES

I-1

7 F

WY

.

PIM

A R

D.

2016

TRILBY WASH20142014

SUN VALLEY2014

2015

PALM VALLEY

2015

TS2

TODELANY

TB

DT

BD

TBD

2014

TO BROWNING

TOGLEN

CANY ON

230kV LINES OWNED BY SRP OR WAPA

J OJ OBATBD

TBD

TB

D

TBD

TB

DTBD

TS10TBD

TS11

TB

D

TBD

345kV LINES OWNED BY WAPA

RACEWAY2010

2010: Morgan-Raceway

230kV (in-service)

2011: Raceway-Pinnacle

Peak 230kV

2014: Scatter Wash

230/69kV substation

Sun Valley-Trilby Wash 230kV

2015: Trilby Wash-Palm

Valley 230kV



2014: Palo Verde Hub-North Gila

500kV #2 line North Gila-TS8 230kV line

Project Name Previous in-service date

New in-service date

Bagdad 115kV line relocation 2011 2014

Scatter Wash 230/69kV substation 2012 2014

Desert Basin-Pinal Central 230kV line 2013 2014

Sundance-Pinal Central 230kV line 2013 2014

* It should be noted that in-service dates shown in this table are based on load projects, not potential interconnections. New generation interconnections may accelerate the in-service date.

15

Project Timing Changes


16

1) Palo Verde to Delany 500kV

2) Palo Verde to North Gila 500kV

3A) Palo Verde to Valley Load (Liberty)

3B) Gila Bend to Valley Load (Liberty)

4) Delany to Blythe 500kV

3.b. APS Planning – Transmission Projects for Renewable Generation


18

3.c. 2010/2011 Study Assumptions

Coordinated Base Cases (Seed Cases)2012 - SATS 2012 case2015 - WECC 2015HS2020 - 2020 WestConnect case

69kV transmission models incorporatedMost up-to-date forecasts for peak

summer loads


19

Summer Peak casesTPL-001 & TPL-002

Thermal analysis (All 10 years)Post-Transient (All 10 years)Transient Stability (2013 & 2018)

TPL-003 & TPL-004 (2013 & 2018) Maximum Load Serving Capability for Phx & Yuma

(All 10 years)TPL-001 & TPL-002 Thermal and Post Transient

Winter Load cases (2013 & 2019 WECC cases)Thermal, Transient Stability, & Post TransientTPL-001 thru TPL-004

3.c. 2009 NERC/WECC Reliability Studies


2020

Thermal Transient Stability Post Transient2013 SIL X2013 PEAK X2018 SIL X2018 PEAK X

2013 SIL (Lines, xfmrs, gens) X X2013 PEAK (Lines, xfmrs, gens) X X X2013 MLSC (Lines, xfmrs, gens) X X2018 SIL (Lines, xfmrs, gens) X X2018 PEAK (Lines, xfmrs, gens) X X X2018 MLSC (Lines, xfmrs, gens) X X

2013 Stuck Breaker/Breaker Failure X X X2013 N-1-1 X X X2013 Bus Section X X X

2018 Stuck Breaker/Breaker Failure X X X2018 N-1-1 X X X2018 Bus Section X X X

2013Major Substations With/Without Generation X X X

2013 Stuck Breaker/Breaker Failure X X X2013 Common Corridor X X X

2018Major Substations With/Without Generation X X X

2018 Stuck Breaker/Breaker Failure X X X2018 Common Corridor X X X

TPL-002 (n-1)

TPL-003 (n-2)

TPL-004 (n-xx)

APS TPL Planning Methodology: Summer

TPL -001(n-0)

NERC STANDARD STUDIES COMPLETED

20

2009 NERC/WECC Studies


2121

Thermal Transient Stability Post Transient2013 WINTER-Low load X2019 WINTER-Low load X

2013 TRANSMISSION LINE X X X2019 TRANSMISSION LINE X X X2013 XFMR X X2019 XFMR X X2013 GENERATION X X2019 GENERATION X X2013 REACTORS X X2019 REACTORS X X

2013 Stuck Breaker X X X2013 N-1-1 X X X2019 Stuck Breaker X X X2019 N-1-1 X X X

2013Loss of All Generation Units at a Station X X X

2013 Common Corridor X X X

2019Loss of All Generation Units at a Station X X X


STUDIES COMPLETED

TPL-002 (n-1)

TPL-003 (n-2)

TPL-004 (n-xx)

APS TPL Planning Methodology: WINTER SEASON - Low load

TPL -001(n-0)

NERC STANDARD

21

2009 NERC/WECC Studies


22

Summer Peak casesTPL-001 & TPL-002

Thermal analysis (All 10 years)Post-Transient (All 10 years)Transient Stability (2013 & 2019)

TPL-003 & TPL-004 (2013 & 2019) Maximum Load Serving Capability for Phx & Yuma

(All 10 years)TPL-001 & TPL-002 Thermal and Post Transient

Winter Load cases (cases unknown at this time)Thermal, Transient Stability, & Post TransientTPL-001 thru TPL-004

3.c. 2010 NERC/WECC Reliability Studies


23

Generation Interconnection requestsAPS OASIS contains Generation

Interconnection Queuehttp://www.oatioasis.com/azps/index.html30 Solar projects - 8336 MW7 Wind projects - 2835 MW1 Others (Coal, NG, Biomass, etc.) - 1400 MW

4 Transmission Interconnection RequestsCurrently no Transmission Service

Requests under StudyCurrently no Economic Study Requests

3.d. Interconnection & Study Requests


24

3.e&f. Stakeholder Study Requests

Study requests can be taken at today’s meeting

Study requests can be made at any time to:[email protected]


25

3.g. Comments & Question

Comments??????

Questions!!!!!!!!!!


26

4.a SRP Planning - Calendar & MethodologyWECC/TEPPC/SWAT Planning CalendarSRP Planning CalendarAssumptions and MethodologyTypes of Studies PerformedProposed 2010–2019 Ten Year Plan


27

2010 Synchronized Study Plan

J an Feb Mar Apr May J un J ul Aug Sep Oct Nov Dec

WestConnectStudy results

TEPPCResults including

Economics studies

SWAT Study results

WECCTEPPC

Economic Studies Submittal

Deadlinefor 2010

10yr Planning studies Filing

w/ACC

BTA study results

Even # years

Base Cases Preparation For

10yr Plan 10yr Plan Study results

Study Work

10yr plansSubregional SWAT groupsWestconnect GroupWECC PCCWECC-TEPPC

J an

WECC PCC / WECC - TEPPC / WESTCONNECT

Deadline for submitting request for 2011

Economic Studies WECC / TEPPC

WECC / TEPPCEconomic Studies

Submittal Deadlinefor 2011

WECC/PCC Annual Study Program

Completed

2nd Qtr Stakeholder

Meeting

4th Qtr Stakeholder

Meeting

WestConnect Plan Approved

SWAT Study Plans

Approved


28

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

10yr Plan – Filed with ACC by Jan. 31 10yr. Plans filed by others

SRP Corporate Load Forecast

Stakeholder Input

SRP Corporate Load Forecast – Post Summer

Sep. 1 – Network Transmission Customers and all other Transmission Customers Load &

Resource Forecast

10yr. Plan – New load forecast sensitivity

WestConnect Coordinated base case

development

Develop 10yr base cases from AZ seed cases

10yr. Plan study effort – Determination of projects, timings, and scope

4th Quarter Stakeholder Meeting – Review draft of current 10yr plan, discussion Economic Study

requests, receive stakeholder input

Planning Calendar for Ten-Year Planning CycleSRP Transmission Planning – 10 Yr

Plan

Arizona Utilities coordinated seed case development – from WestConnect cases

2nd Quarter Stakeholder Meeting – Stakeholder input on studies, request study alternatives,

updates on current projects

Other Subregional Coordination

Activities Throughout the Year

· APS/SRP Coordination Meeting

· SRP/WAPA Coordination Meeting

· WestConnect Meetings· SWAT Meetingso CATS-EHVo CATS-HVo CRTo AZ/NMo SATSo Renewableso Short-circuit Working

Group

Oct. 31 – Deadline to submit Economic Study Requests for 4th Quarter Meeting review


29

What Type of Study?1

Does Transmission Provider’s system

meetNERC/WECC

criteria?

No

Does Transmission Provider’s system meet local reliability criteria?

Yes



No

Transmission Provider coordinates with Sub-

Regional Planning Group

Yes

Economic Reliability

Transmission Provider

Evaluation

Regional

TEPPC evaluates with Stakeholder

input

Transmission Provider Economic

Study

Customer Choice of Study at Customer’s

expense

Local2

TEPPC determines high priority, performs

study

High priority

Not high priority

TEPPC determines not

high priority

Study results documented in a report and reviewed

by Customer and Transmission Provider



1. Generator Interconnection Request studies are performed pursuant to the Large Generator Interconnection Procedure contained in the Transmission Provider’s Open Access Transmission Tariff (OATT). Transmission Service Requests are also performed pursuant to OATT procedures.

2. All requests for economic planning studies received by the Transmission Provider are forwarded to TEPPC for inclusion in the TEPPC Master List. TEPPC will evaluate only those requests that have regional impacts.

Transmission Planning Process

Exhibit 1 – SRP Attachment K


30

4.a 2010-2019 Study Assumptions/Methodology Coordinated Base Cases (Seed Cases)

NERC Compliance Studies 2011 – APS/SRP 2011 coordinated case 2016 – APS/SRP 2016 coordinated case

BTA Studies 2019 - CATS-EHV 2018 coordinated case

69kV transmission models incorporated Most up-to-date forecasts for peak summer loads


31

NERC Compliance Studies Cases 2011 & 2016 Summer Peak & Offpeak Cases 2011 & 2016 Simultaneous Import Limit (SIL) &

Maximum Load Serving Capability (MLSC) Cases Summer Peak & Offpeak cases

Thermal analysis Post-Transient Transient Stability

4.a 2010-2019 Study Assumptions/Methodology


32

SIL & MLSC Cases (Phx) Thermal and Post-Transient

4.a 2010-2019 Study Assumptions/Methodology


Planning MethodologyNERC STANDARD Type of Studies Completed

TPL-001 (N-0) Thermal Transient Stability Post-transient

2011 Peak X

2011 Offpeak X

2016 Peak X

2016 Offpeak X

2016 All-in X


2011 Peak X X X

2011 SIL X X

2011 MLSC X X

2016 Peak X X X

2016 SIL X X

2016 MLSC X X


2011 Bus outages X X X

2011 Contingency of towers X X X

2011 Stuck breaker X X X


Planning MethodologyNERC STANDARD Type of Studies Completed



2011 N-1-1 X X X

2016 Bus outages X X X

2016 Contingency of towers X X X

2016 Stuck breaker X X X


2016 N-1-1 X X X

TPL-004 (N-X) Thermal Transient Stability Post-transient

2011 Substations with generation X X

2011 Common Corridor/Substation without generation

X X


Note: TPL-003 studies were performed on Peak & Off-Peak cases

35

4.bSRP Ten Year Plan Projects

2010-2019

Filed


FUTURE LINES

EXISTING LINES

FUTURE 500kV SUBSTATION

EXISTING 500kV SUBSTATIONSALT RIVER PROJECT

500kV SYSTEM

NEVADA

WESTWING

KYRENE

SILVERKING

CORONADO

CHOLLA(APS)

MEAD

McCULLOUGH

MARKETPLACE

BROWNING

HASSAYAMPARUDDPALO VERDE

PINAL WESTABEL2020

2011

2014

JOJOBA

SAGUARO

(TBD, place holder for CATS only,

no current SRP plans)

SANTA ROSA2014

2014

TBD

TBD

MORGAN(APS)2010

Sun Valley (APS)2014

NAVAJO GS

2014

2016

SUGARLOAF (APS)

MOENKOPI

YAVAPAI

PINNACLE PEAK (APS)2010

2010

RS20TBD

PINAL CENTRAL2014

2011

NORTH GILA (APS)

2014

TBD

TBD

2020

TBD

36

2014

TORTOLITA(TEP)

CentralNew Mexico

SUNZIA (SPG)

2013/2014

DUGAS(APS)


DELANY 2012

37

2011: Browning-Pinal Central 500kV (it will be

energized as Randolph-Browning 230kV until 2014)

2014: Delany-Sun Valley 500kV Hassayampa-N.Gila 500kV line Pinal West-Pinal Central 500kV Pinal Central 500/230kV substation2016: Sun Valley-Morgan 500kV2020: Pinal Central-Abel #2 500kV

SALT RIVER PROJECT500kV SYSTEM


SALT RIVER PROJECTEASTERN 230kV SYSTEM

GOLDFIELDTHUNDERSTONE

SANTAN

TBDRS17

TBDTBD

TBD

BROWNING

RS21

TBD

2011ABEL/RS22

TBD

DINOSAUR

RS23TBD

RS20LOOP IN

TBDTBD

TBD

TBD

TBD

RS24

2017

TBDROGERS

DESERT BASIN

PINAL CENTRAL2014

2014

2011

TO SILVERKING

PINNACLE PEAK

To CORBELL

To SCHRADER

CATSHV03TBD

EXISTING 230kV SUBSTATIONS

FUTURE 230kV CIRCUIT

EXISTING 230kV CIRCUIT

FUTURE 230kV SUBSTATIONS

GENERATING STATION

DOUBLE CIRCUIT, PHASE TIED LINE

2014

20112018

2017

RANDOLPH SWITCHYARD

2011

TO SILVERKING

2018

2018


BRANDOWTBD

TBD

2014

39

2011: Dinosaur-Abel-Randolph 230kV 2014: Desert Basin-Pinal Central 230kV line Pinal Central - Randolph 230kV line RS26 230/69kV substation2017: Abel-Schrader 230kV 2018: Abel-Santan 230kV RS24 230/69kV substation SALT RIVER PROJECT

EASTERN 230kV SYSTEM


BRANDOW

WARD

CORBELL

ALEXANDER

WESTWING

KYRENEANDERSON

WHITETANKS

ORME

SRPPINNACLE PEAK

PAPAGO

LIBERTY(W.A.P.A.)

AGUAFRIA

DEERVALLEY

(APS)

ROGERS

TO APSOCOTILLO

TO APSPINNACLE PEAK

TO W.A.P.A.PINNACLE PEAK

W.A.P.A.

W.A.P.A.

W.A.P.A.

KNOX

SCHRADER

RUDD

TBDTBD

TBD RS262014

TBD

SALT RIVER PROJECTWESTERN 230kV SYSTEM

TBDRS17

SANTAN

THUNDERSTONE

To BROWNING

To RS24

EXISTING 230kV SUBSTATIONS

FUTURE 230kV CIRCUIT

EXISTING 230kV CIRCUIT

FUTURE 230kV SUBSTATIONS

GENERATING STATION

DOUBLE CIRCUIT, PHASE TIED LINE

To GOLDFIELD


RS25TBD

GENERATING STATION

EXISTING LINE

FUTURE LINE

115kV

MIAMI

PINAL

SUPERIOR

SPURLOCK

MOONSHINE

ELLISON

FRAZIER

ROOSEVELT

TBD

TBD

RAYMORRIS

KEARNY

NEW HAYDEN

EXISTING SUBSTATION

HAYDEN

STEWARTMOUNTAIN

MORMONFLAT

HORSEMESA

GOLDFIELD230kV

OAKFLAT

PINTOVALLEY

KNOLL

TO APACHE(AEPCO)

TOTHUNDERSTONE

COOLIDGE(W.A.P.A.)

TOSILVER KING

500kVSILVER

KING230

ASARC0

TBD

TBD(230kV)

SEE DETAIL

DETAIL

SUPERIOR230KV

SUPERIOR115KV

FUTURE SUBSTATION

SALT RIVER PROJECTEASTERN MINING

AREA SYSTEM

CARREL

BONNEYBROOK(APS)

230kVTBD

RS20

TBD(230kV)

TBD(230kV)

TRASK

CARLOTTA


Electric System Additions/Upgrades

Equipment Year

Coronado #2 500/345kV transformer Completed

Cholla-Saguaro 500kV Series Capacitor @ Cholla replacement 2011

Kyrene 3rd 500/230kV transformer 2011

Abel 1st 230/69kV transformer 2011

Rudd 1st 230/69kV transformer 2013

Schrader 3rd 230/69kV transformer 2013

Pinal Central 1st & 2nd 500/230kV transformers 2014

RS-24 1st 230/69kV transformer 2018


Summary Status

Project I/S Status Study Forum

Pinal West – Browning 500kV 2011, 2014 Des/ ROW Yes CATS/CATS HV/WATS/SEV E&O/ Desert Basin – Pinal Central 230kV 2014 Des Yes CATS HV/WECC SRWG, TSSRS24 230kV Transmission Project 2018 Siting Yes RS26 Transmission Project 2014 Pre Siting Yes


SRP Changes from 2009 to 2010

500kV Projects 2010 Morgan – Pinnacle Peak

Formerly Raceway – Pinnacle Peak 2013/2014 SunZia Project

Delayed from 2013 2014 Pinal West – Pinal Central

Delayed from 2013 2014 Tortolita – Pinal Central

Delayed from 2013

230kV Projects 2014 Desert Basin – Pinal Central 230kV

Delayed from 2013 2017/2018 RS24 230kV Transmission Project

Delayed from 2013

44June 24, 2010

45

Pinal West – Pinal Central 500kV line Pinal Central – Tortolita 500kV line Palo Verde – Delany 500kV line

4.c. SRP Planning – Transmission Projects for Renewable Generation


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Generation Interconnection Requests Transmission Interconnection Requests Transmission Service Requests Economic Study Requests

SRP Planning - Study Requests


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Generation Interconnection Requests listed below are for SRP solely owned transmission:

4.d. SRP Planning – Study Requests

4 Natural Gas projects - 2516 MW2 Wind projects - 900 MW

The joint interconnection requests are listed on SRP OASIS website @ http://www.oatioasis.com/SRP/index.html


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Currently there are no Transmission Interconnection Requests under study

4.d. SRP Planning - Study Requests


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Currently there are no Transmission Service Requests under study

4.d. SRP Planning - Study Requests


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Currently there are no Economic Study Requests

4.e. SRP Planning - Study Requests


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SRP invites Stakeholders to submit request for additional transmission studies

4.f. Stakeholders Requests


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4.g. SRP Planning – Comments & Questions

Stakeholder comments/questions on 2010 Study Results or 2011 Study Requests

Requests can be made at any time to:[email protected]


5. Current Activities Updates

NERC Compliance Reliability Standard MOD-029 – Rated System Path Methodology


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6. Stakeholder Questions and Comments

Open discussion

Reference Material WestConnect –

http://www.westconnect.com/documents_results.php?categoryid=85 APS OASIS –

http://www.oatioasis.com/azps/index.html SRP OASIS –

http://www.oatioasis.com/srp/index.html


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7. Action Items

Review any action items identified for follow up Information addressing action items to be posted

on APS and/or SRP OASIS and WestConnect website


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