chino hills january 2018 - southern california edison · circuit reliability review chino hills...

20
Circuit Reliability Review Chino Hills January 2018

Upload: vandieu

Post on 07-Aug-2018

216 views

Category:

Documents


0 download

TRANSCRIPT

Circuit Reliability Review Chino Hills

January 2018

Building a Smarter Grid for Southern California

• Southern California Edison is developing an electric grid to support California’s transition to a clean and sustainable future that meets the needs and expectations of our customers.

• We are investing more than $13 billion in the power distribution grid over three years (2017-19). Our main investment goal is to increase power reliability through significant upgrades. The investments include:

• Upgrading cables, poles, switches and transformers

• Updating the grid so it can accommodate new technologies, such as smart inverters that will allow for the two-way flow of solar energy

• Adapting the power system to accommodate future California policy related to energy storage, electric transportation and renewable energy

• Providing enhanced automation and monitoring devices to allow us to better respond to changes on the grid

• Our investments in local communities will help ensure that customers receive safe, reliable, and affordable electricity now and in the future.

• Learn more at edison.com/innovation

2

Understanding Your Reliability Report

• As your electric utility, we want you to always have power when you need it. To

get there, we constantly track and monitor electric outages across our service

territory, and we measure our “system reliability” from this data.

• The two metrics we rely on are common in the electric utility industry: the

System Average Interruption Duration Index (SAIDI) and the System Average

Interruption Frequency Index (SAIFI). Both are described in more detail on the

next page.

• Replacing and upgrading our infrastructure will help SCE maintain or improve

SAIDI and SAIFI measurements.

• This report provides historical reliability data for the circuits that serve your

jurisdiction and our proposed infrastructure upgrades for the current year.

• To view other reliability reports, visit sce.com>Outage Center>Maintaining

Reliable Service

3

Reliability Metrics

MOMENTARY OUTAGES:

OUTAGES LASTING 5 MINUTES OR LESS

MAIFI:

o The number of times the average customer is interrupted by Momentary outages each year.

SUSTAINED OUTAGES:

OUTAGES LASTING LONGER THAN 5 MINUTES

SAIFI:

o The number of times the average customer is interrupted by Sustained outages each year.

SAIDI:

o The cumulative amount of time the average customer is interrupted by Sustained outages each year.

4

CityList1Cities in the ONTARIO District

SAN ANTONIO HEIGHTS

UPLAND

CHINO HILLS

CORONA

EASTVALE

HOME GARDENS

MIRA LOMA

MONTCLAIR

CHINO

NORCO

ONTARIO

PEDLEY

RIVERSIDE

5

*”Exclusions” are days which utilities are allowed to remove from their metrics because the outages on those days were caused by a severe acts of nature.**In the columns showing “Rank,” lower numbers indicate poorer performance.

6

CircuitList1Overview of Chino HillsThere are 22 circuits that serve Chino Hills 1

Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers

ALICIA(12KV) 2,007 - - -

ALTERRA(12KV) 1,544 - - -

BAYBERRY(12KV) 755 - - -

BITTERN(12KV) 1,881 - - -

BUTTERFIELD(12KV) 1,441 - - -

CHAMPION(12KV) 1,732 - - -

DEACANO(12KV) 185 - - -

DEL CARBON(12KV) 1,419 - - -

EAST END(12KV) 295 - - -

ELPRADO(12KV) 1,729 - - -

EUCALYPTUS(12KV) 1,369 - - -

GLEN RIDGE(12KV) 560 - - -

INDEPENDENCE(12KV) 2,198 - - -

MACIEL(12KV) 2,276 - - -

MAIZE(12KV) 902 - - -

ONBORD(12KV) 1,345 - - -

PARKWAY(12KV) 1,762 - - -

QUINTO(12KV) 1,942 - - -

STALLING(12KV) 1,599 - - -

TITUS(12KV) 1,256 - - -

TUPELO(12KV) 1,034 - - -

WOODVIEW(12KV) 1,326 - - -

- - - -

- - - -

- - - -

- - - -

- - - -

- - - -

- - - -

- - - -

Grand Total 30,557

7

BarChart

SCE SYSTEMWIDE

**Data is as of 02/20/2018, data

can be slightly different due to

outage data validation process

Chino Hills

Reliability History of Circuits Serving Chino Hills (No Exclusions)

**“Exclusions” are days which

utilities are allowed to

remove from their metrics

because the outages on

those days were caused by

acts of nature.

107.9

96.9

115.4

69.5

112.1 114.8

134.5139.7

0.0

20.0

40.0

60.0

80.0

100.0

120.0

140.0

160.0

2014 2015 2016 2017

SAIDI

(average

minutes of

sustained

interruptions)

0.7

0.5

1.0

0.6

1.0 0.9

1.11.2

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

SAIFI

(average

frequency of

sustained

interruptions)

0.50.6

1.1

0.6

1.4 1.41.6

1.8

0.0

0.5

1.0

1.5

2.0

MAIFI

(average

frequency of

momentary

interruptions)

8

SAIDIChart

SAIDI = the cumulative amount of time the average customer is interrupted by “sustained” outages each year.

Causes of Repair Outages in Chino Hills

2017

3rd Party

10.9%

Equipment Failure

64.4%

Operation

7.1%

Other

10.1%

Vegetation /Animal

1.8%

Weather /Fire /Earthquake

5.7% Contributions to SAIDI by Outage Cause

3rd Party

Equipment Failure

Operation

Other

Vegetation /Animal

Weather /Fire /Earthquake

Equipment Failure

e.g., in-service failure of transformer, switch, or conductors

Vegetation/Animale.g., tree branch, rodent, or bird

causing a short circuit between conductors

Othere.g., patrolled but no cause found

Operationse.g., urgent maintenance w/o 3-day

notice 3rd Party

e.g., balloon, car hit pole, dig-in

9

SAIFIChart

SAIFI = the number of times the average customer is interrupted by “sustained” outages each year

Causes of Repair Outages in Chino Hills

2017

3rd

Party

14.2%

Equipment Failure

39.5%Operation

25.0%

Other

12.4%

Vegetation /Animal

0.6%

Weather /Fire

/Earthquake

8.3%

Contributions to SAIFI by Outage Cause

3rd Party

Equipment Failure

Operation

Other

Vegetation /Animal

Weather /Fire /Earthquake

Equipment Failure

e.g., in-service failure of transformer, switch, or conductors

Vegetation/Animale.g., tree branch, rodent, or bird

causing a short circuit between conductors

Othere.g., patrolled but no cause found

Operationse.g., urgent maintenance w/o 3-day

notice 3rd Party

e.g., balloon, car hit pole, dig-in

10

11

12

Back-up Slides

Reliability Histories of Circuits Serving Chino Hills

Updated through Dec 2017

CitySummary

SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI

107.9 0.7 0.5 96.9 0.5 0.6 115.4 1.0 1.1 16.6 0.2 0.1 5.8 0.1 0.1 40.0 0.3 0.1 7.1 0.1 0.4 69.5 0.6 0.6

3rd Party 7% 6% 1% 4% 6% 21% 1% 0% - 11% 16% - 3% 5% 100% 14% 20% - 1% 0% 9% 11% 14% 20%

Equipment Failure 48% 39% 30% 50% 45% - 70% 41% 5% 32% 25% - 72% 15% - 83% 64% 52% 28% 18% 11% 64% 39% 12%

Operation 14% 10% 0% 34% 27% 0% 19% 46% 3% 9% 18% 42% 25% 80% - 3% 16% 48% 10% 9% - 7% 25% 9%

Other 4% 1% 23% 2% 2% 53% 4% 5% 42% 42% 40% 58% - - - - - - 1% 1% 9% 10% 12% 12%

Vegetation/Animal 1% 1% 18% 10% 15% 6% - - 31% 5% 1% - - - - - - - 5% 2% 71% 2% 1% 47%

Weather/Fire/Earthquake 28% 43% 28% 0% 6% 20% 6% 8% 19% 1% 1% - - - - - - - 55% 70% - 6% 8% -

SCE SYSTEMWIDE 112.1 1.0 1.4 114.8 0.9 1.4 134.5 1.1 1.6 42.6 0.3 0.5 23.6 0.2 0.4 29.2 0.2 0.4 44.3 0.4 0.5 139.7 1.2 1.8

2nd Qtr 2017 3rd Qtr 2017

22 Circuits Serving Chino Hills -- Total Customers:

30,557

Average Reliability of 22 Circuits Serving Chino Hills

4th Qtr 2017 20172014 2015 2016 1st Qtr 2017

Notes:

No outages are excluded from the metrics.

Outage Causes: Other: e.g., patrolled but no cause could be foundOperations: e.g., urgent maintenance w/o 3-day notice to customers3rd Party: e.g., balloons, car hit pole, dig-inVegetation/Animal: e.g., tree branch, rodent, or bird causing short circuit across conductors

SAIDI (minutes) = the cumulative amount of time the average customer is interrupted by “sustained” (longer than 5 minutes) outages.

SAIFI (interruptions) = the number of times the average customer is interrupted by “sustained” outages.

MAIFI (interruptions) = the number of times the average customer is interrupted by “momentary " (lasting 5 minutes or less) outages.

14

CircuitHistory1

SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI

ALICIA(12KV) - Customers: 2,007 30.6 0.2 2.0 108.7 0.7 0.7 54.9 2.6 2.5 - - - 16.9 1.0 - 96.4 0.8 - 0.2 0.0 - 113.5 1.9 -

3rd Party - - - 100% 100% - - - - - - - - - - 90% 96% - - - - 76% 43% -

Equipment Failure 100% 100% - - - - 46% 2% - - - - - - - 10% 4% - - - - 8% 2% -

Operation - - - - - - 41% 98% - - - - 100% 100% - - - - - - - 15% 56% -

Other - - 50% - - - - - 51% - - - - - - - - - - - - - - -

Vegetation/Animal - - 50% - - 100% - - - - - - - - - - - - 100% 100% - 0% 0% -

Weather/Fire/Earthquake - - - - - - 12% 0% 49% - - - - - - - - - - - - - - -

ALTERRA(12KV) - Customers: 1,544 93.0 1.0 - - - - 70.4 0.6 - - - - - - - 14.0 0.0 - - - - 14.0 0.0 -

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure 100% 100% - - - - 100% 100% - - - - - - - 100% 100% - - - - 100% 100% -

Operation - - - - - - - - - - - - - - - - - - - - - - - -

Other - - - - - - - - - - - - - - - - - - - - - - - -

Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - -

Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - -

BAYBERRY(12KV) - Customers: 755 109.7 1.0 - - - 2.1 - - - - - - - - - - - - - - 2.0 - - 2.0

3rd Party - - - - - - - - - - - - - - - - - - - - 50% - - 50%

Equipment Failure 100% 100% - - - - - - - - - - - - - - - - - - - - - -

Operation - - - - - - - - - - - - - - - - - - - - - - - -

Other - - - - - 50% - - - - - - - - - - - - - - 50% - - 50%

Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - -

Weather/Fire/Earthquake - - - - - 50% - - - - - - - - - - - - - - - - - -

BITTERN(12KV) - Customers: 1,881 30.6 0.3 - 30.2 0.1 - 368.7 0.7 - - - - - - - 130.9 1.0 0.5 - - - 130.9 1.0 0.5

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure 82% 87% - - - - 93% 77% - - - - - - - 100% 100% 100% - - - 100% 100% 100%

Operation 18% 13% - 100% 100% - 7% 23% - - - - - - - - - - - - - - - -

Other - - - - - - - - - - - - - - - - - - - - - - - -

Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - -

Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - -

Reliability Histories for Individual Circuits Serving Chino Hills - 1 of 6

2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017 2017

15

CircuitHistory2

SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI

BUTTERFIELD(12KV) - Customers: 1,441 13.8 0.1 1.0 107.8 0.7 - 50.5 0.4 - - - - 8.7 0.0 1.0 182.6 1.1 - - - - 191.3 1.1 1.0

3rd Party - - - - - - - - - - - - - - 100% - - - - - - - - 100%

Equipment Failure - - - 95% 93% - 1% 0% - - - - 100% 100% - 100% 100% - - - - 100% 100% -

Operation 49% 48% - 5% 7% - 99% 100% - - - - - - - - - - - - - - - -

Other - - - - - - - - - - - - - - - - - - - - - - - -

Vegetation/Animal 51% 52% 100% - - - - - - - - - - - - - - - - - - - - -

Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - -

CHAMPION(12KV) - Customers: 1,732 314.8 1.0 - 32.2 0.1 1.0 0.9 0.0 2.3 - - - - - - - - - - - 1.0 - - 1.0

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure 100% 100% - - - - - - - - - - - - - - - - - - - - - -

Operation - - - 100% 100% - 100% 100% - - - - - - - - - - - - - - - -

Other - - - - - 100% - - 50% - - - - - - - - - - - - - - -

Vegetation/Animal - - - - - - - - 50% - - - - - - - - - - - 100% - - 100%

Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - -

DEACANO(12KV) - Customers: 185 1.7 0.0 1.9 - - - - - - 128.6 1.0 - - - - - - - 9.7 0.0 2.0 138.3 1.0 2.0

3rd Party - - 49% - - - - - - - - - - - - - - - 100% 100% 100% 7% 2% 100%

Equipment Failure - - - - - - - - - 100% 100% - - - - - - - - - - 93% 98% -

Operation 100% 100% - - - - - - - - - - - - - - - - - - - - - -

Other - - - - - - - - - - - - - - - - - - - - - - - -

Vegetation/Animal - - 51% - - - - - - - - - - - - - - - - - - - - -

Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - -

DEL CARBON(12KV) - Customers: 1,419 79.6 0.4 1.3 113.8 0.4 2.2 93.8 1.7 2.3 4.5 0.0 - - - - - - - 79.4 1.0 0.2 83.8 1.1 0.2

3rd Party - - - - - 45% - - - - - - - - - - - - - - - - - -

Equipment Failure - - - 57% 39% - 85% 36% 9% - - - - - - - - - - - - - - -

Operation 48% 11% - 5% 14% - 15% 64% - 100% 100% - - - - - - - 2% 1% - 7% 2% -

Other - - 100% - - 42% - - 91% - - - - - - - - - - - 100% - - 100%

Vegetation/Animal - - - 38% 47% 14% - - - - - - - - - - - - 10% 3% - 9% 3% -

Weather/Fire/Earthquake 52% 89% - - - - - - - - - - - - - - - - 88% 96% - 84% 95% -

2017

Reliability Histories for Individual Circuits Serving Chino Hills - 2 of 6

2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017

16

CircuitHistory3

SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI

EAST END(12KV) - Customers: 295 6.7 0.0 - 176.6 1.0 - 3.0 0.0 1.0 - - - - - - - - - - - - - - -

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure 48% 18% - - - - - - - - - - - - - - - - - - - - - -

Operation - - - 100% 100% - 100% 100% - - - - - - - - - - - - - - - -

Other 52% 82% - - - - - - 100% - - - - - - - - - - - - - - -

Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - -

Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - -

ELPRADO(12KV) - Customers: 1,729 241.7 0.5 1.0 45.8 0.1 - 2.6 0.0 - 5.7 0.0 - - - - - - - - - - 5.7 0.0 -

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure 87% 71% 100% 90% 63% - - - - - - - - - - - - - - - - - - -

Operation 13% 29% - 10% 38% - 100% 100% - 100% 100% - - - - - - - - - - 100% 100% -

Other - - - - - - - - - - - - - - - - - - - - - - - -

Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - -

Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - -

EUCALYPTUS(12KV) - Customers: 1,369 15.8 0.1 - 78.5 0.2 1.0 - - 1.0 16.9 0.6 0.6 - - - - - - - - 1.0 16.9 0.6 1.6

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure - - - 75% 58% - - - - - - - - - - - - - - - - - - -

Operation 100% 100% - 25% 42% - - - - 100% 100% 100% - - - - - - - - - 100% 100% 36%

Other - - - - - 100% - - - - - - - - - - - - - - - - - -

Vegetation/Animal - - - - - - - - 100% - - - - - - - - - - - 100% - - 64%

Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - -

GLEN RIDGE(12KV) - Customers: 560 - - - 329.5 0.4 1.0 204.7 0.8 1.0 - - - 1.1 0.1 - - - - - - 0.9 1.1 0.1 0.9

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure - - - - - - 92% 65% - - - - - - - - - - - - - - - -

Operation - - - 100% 100% - 8% 35% - - - - 100% 100% - - - - - - - 100% 100% -

Other - - - - - 100% - - - - - - - - - - - - - - - - - -

Vegetation/Animal - - - - - - - - 100% - - - - - - - - - - - 100% - - 100%

Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - -

Reliability Histories for Individual Circuits Serving Chino Hills - 3 of 6

2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017 2017

17

CircuitHistory4

SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI

INDEPENDENCE(12KV) - Customers: 2,198 3.5 0.0 - 42.1 0.3 1.0 2.0 0.0 2.0 82.8 1.0 0.0 24.0 0.1 - - - - - - 1.0 106.8 1.1 1.0

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure - - - - - - - - - - - - 100% 100% - - - - - - - 22% 5% -

Operation 100% 100% - 100% 100% - - - - 0% 0% - - - - - - - - - - 0% 0% -

Other - - - - - 100% - - - 100% 100% 100% - - - - - - - - - 77% 94% 1%

Vegetation/Animal - - - - - - - - 50% - - - - - - - - - - - 100% - - 99%

Weather/Fire/Earthquake - - - - - - 100% 100% 50% - - - - - - - - - - - - - - -

MACIEL(12KV) - Customers: 2,276 90.2 1.5 0.4 61.7 0.1 - 190.5 1.3 - - - - - - - - - - - - - - - -

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure 85% 93% 100% 87% 58% - 92% 95% - - - - - - - - - - - - - - - -

Operation 11% 6% - 13% 42% - 8% 5% - - - - - - - - - - - - - - - -

Other - - - - - - - - - - - - - - - - - - - - - - - -

Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - -

Weather/Fire/Earthquake 4% 1% - - - - - - - - - - - - - - - - - - - - - -

MAIZE(12KV) - Customers: 902 269.5 1.2 - 186.8 0.4 - 395.5 1.5 2.0 62.7 1.0 - 38.9 0.2 - - - - - - - 101.6 1.2 -

3rd Party - - - - - - - - - 100% 100% - 1% 1% - - - - - - - 62% 85% -

Equipment Failure 32% 14% - 99% 84% - 94% 89% - - - - 99% 99% - - - - - - - 38% 15% -

Operation 68% 86% - 1% 16% - 6% 11% 50% - - - - - - - - - - - - - - -

Other - - - - - - - - 50% - - - - - - - - - - - - - - -

Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - -

Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - -

ONBORD(12KV) - Customers: 1,345 203.9 0.3 0.3 76.2 0.1 2.2 159.0 2.1 1.1 22.7 0.1 - - - - 330.4 1.0 - 47.8 0.3 1.0 401.0 1.4 1.0

3rd Party - - - - - 100% - - - - - - - - - - - - - - - - - -

Equipment Failure 62% 34% 10% 96% 56% - 25% 1% 94% - - - - - - 100% 100% - 95% 83% 100% 94% 91% 100%

Operation 15% 30% - 4% 44% - 17% 50% - - - - - - - - - - 3% 14% - 0% 3% -

Other 16% 3% 80% - - - 55% 48% 5% - - - - - - - - - 2% 2% - 0% 1% -

Vegetation/Animal 6% 34% 11% - - - - - - 89% 61% - - - - - - - - - - 5% 3% -

Weather/Fire/Earthquake - - - - - - 2% 0% 1% 11% 39% - - - - - - - - - - 1% 2% -

Reliability Histories for Individual Circuits Serving Chino Hills - 4 of 6

2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017 2017

18

CircuitHistory5

SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI

PARKWAY(12KV) - Customers: 1,762 2.5 0.0 - 180.7 1.3 1.0 56.6 1.0 1.0 - - - - - - 18.4 0.0 - - - 1.0 18.4 0.0 1.0

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure - - - 12% 8% - 100% 100% - - - - - - - - - - - - - - - -

Operation 100% 100% - 5% 4% - - - - - - - - - - 100% 100% - - - - 100% 100% -

Other - - - - - 100% - - - - - - - - - - - - - - - - - -

Vegetation/Animal - - - 84% 88% - - - 100% - - - - - - - - - - - 100% - - 100%

Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - -

QUINTO(12KV) - Customers: 1,942 270.4 2.9 1.0 1.9 0.3 1.0 179.7 1.1 0.8 55.3 0.1 - 0.6 0.0 - 3.5 0.6 0.4 9.5 0.0 - 68.9 0.7 0.4

3rd Party - - - - - - 10% 6% - - - - - - - - - - - - - - - -

Equipment Failure - - - - - - 60% 24% - 96% 69% - 100% 100% - - - - - - - 78% 10% -

Operation 2% 1% 0% - - - 11% 23% - 4% 31% - - - - 100% 100% 100% - - - 8% 86% 100%

Other 7% 1% - - - - 2% 2% - - - - - - - - - - - - - - - -

Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - -

Weather/Fire/Earthquake 91% 98% 100% 100% 100% 100% 18% 45% 100% - - - - - - - - - 100% 100% - 14% 4% -

STALLING(12KV) - Customers: 1,599 - - - 31.0 0.1 - 14.0 1.0 1.0 19.3 0.0 - 6.4 0.0 - - - - - - - 25.7 0.1 -

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure - - - - - - - - - - - - - - - - - - - - - - - -

Operation - - - 9% 12% - 100% 100% - - - - 100% 100% - - - - - - - 25% 50% -

Other - - - 91% 88% - - - 100% 100% 100% - - - - - - - - - - 75% 50% -

Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - -

Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - -

TITUS(12KV) - Customers: 1,256 339.1 2.2 2.7 375.3 1.6 - 183.1 3.0 3.0 - - - 24.8 0.1 0.9 15.4 0.1 - 14.8 0.1 - 55.0 0.3 0.9

3rd Party 49% 46% - - - - - - - - - - 18% 73% 100% - - - - - - 8% 34% 100%

Equipment Failure 32% 47% 65% 100% 100% - 52% 34% - - - - 82% 27% - 100% 100% - - - - 65% 36% -

Operation - - - - - - 5% 33% - - - - - - - - - - 100% 100% - 27% 31% -

Other - - - - - - - - 67% - - - - - - - - - - - - - - -

Vegetation/Animal - - - - - - - - 33% - - - - - - - - - - - - - - -

Weather/Fire/Earthquake 19% 7% 35% - - - 42% 33% - - - - - - - - - - - - - - - -

Reliability Histories for Individual Circuits Serving Chino Hills - 5 of 6

2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017 2017

19

CircuitHistory6

SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI

TUPELO(12KV) - Customers: 1,034 41.2 0.2 - 381.3 1.3 1.0 78.3 0.2 1.0 34.5 1.0 1.0 - - - - - - - - 1.0 34.5 1.0 2.0

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure 66% 50% - - - - 100% 100% - 100% 100% - - - - - - - - - - 100% 100% -

Operation 34% 50% - 100% 100% 5% - - - - - - - - - - - - - - - - - -

Other - - - - - 95% - - - - - 100% - - - - - - - - - - - 50%

Vegetation/Animal - - - - - - - - 100% - - - - - - - - - - - 100% - - 50%

Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - -

WOODVIEW(12KV) - Customers: 1,326 - - - 80.4 1.0 - 284.6 2.8 0.8 - - - - - - - - - - - - - - -

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure - - - 86% 95% - 34% 48% - - - - - - - - - - - - - - - -

Operation - - - 14% 5% - 66% 52% - - - - - - - - - - - - - - - -

Other - - - - - - - - 100% - - - - - - - - - - - - - - -

Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - -

Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - -

Reliability Histories for Individual Circuits Serving Chino Hills - 6 of 6

2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017 2017

20