Circuit Reliability Review - sce.com · Circuit Reliability Review ... • We are investing more than $13 bil lion in the power distribution gr id over three years ... transformer,

Circuit Reliability Review City of Tulare

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

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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

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Reliability MetricsMOMENTARY 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.

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CityList1Cities in the SAN JOAQUIN District

KINGS COUNTYLEMON COVE

WOODLAKEWOODVILLECITY OF TULARETULE RIVER INDIAN TRIBE

SPRINGVILLESTRATHMORETERRA BELLATHREE RIVERSTIPTONVISALIA

LINDSAYMCFARLAND

COUNTY OF TULAREDELANODUCOREARLIMARTEAST PORTERVILLEEXETER

ARMONA

PIXLEYPOPLAR-COTTON CENTERPORTERVILLERICHGROVE

FARMERSVILLEGOSHENHANFORDIVANHOE

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*”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.

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CircuitList1Overview of City of TulareThere are 23 circuits that serve City of Tulare 1

Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type CustomersAURORA(12KV) 2,608 - - -CANBY(12KV) 1,305 - - -CARTMILL(12KV) 749 - - -CATTLE(12KV) 995 - - -CHEESE(12KV) 97 - - -ELK(12KV) 170 - - -FOGG(12KV) 1,622 - - -GLOVER(12KV) 197 - - -GREEN(12KV) 214 - - -GUERNSEY(12KV) 1,164 - - -MATHIAS(12KV) 1,352 - - -MID VALLE(12KV) 1,083 - - -MILK(12KV) 1,817 - - -OAKLAND(12KV) 170 - - -PAIGE(12KV) 2,105 - - -RINKER(12KV) 1,101 - - -SERENITY(12KV) 1,044 - - -STEELMAN(12KV) 1,014 - - -SWALL(12KV) 1,311 - - -TLSMITH(12KV) 569 - - -TUGGLE(12KV) 2,194 - - -TURNER(12KV) 1,203 - - -WHEY(12KV) 1,816 - - -

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

Grand Total 25,900

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BarChart

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SAIDIChart

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

Causes of Repair Outages in City of Tulare2017

3rd Party38.4%

Equipment Failure29.5%

Operation7.2%

Other9.9%

Vegetation /Animal3.0% Weather /Fire

/Earthquake12.0%

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 conductorsVegetation/Animale.g., tree branch, rodent, or birdcausing a short circuit between conductors Othere.g., patrolled but no cause found Operationse.g., urgent maintenance w/o 3‐daynotice 3rd Party e.g., balloon, car hit pole, dig‐in

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SAIFIChart

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

Causes of Repair Outages in City of Tulare2017

3rd Party40.1%

Equipment Failure21.5%

Operation12.7%

Other11.1%

Vegetation /Animal4.1%


10.6%

Contributions to SAIFI by Outage Cause

3rd Party

Equipment Failure

Operation

Other

Vegetation /Animal


Equipment Failure e.g., in-service failure of

transformer, switch, or conductorsVegetation/Animale.g., tree branch, rodent, or birdcausing a short circuit between conductors Othere.g., patrolled but no cause found Operationse.g., urgent maintenance w/o 3‐daynotice 3rd Party e.g., balloon, car hit pole, dig‐in

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11

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Back-up Slides

Reliability Histories of Circuits Serving City of Tulare

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

91.8 0.9 3.0 240.1 1.2 1.1 65.9 0.7 0.6 10.7 0.2 0.1 23.3 0.4 0.3 28.9 0.2 0.2 16.9 0.3 0.3 79.8 1.1 1.03rd Party 22% 36% 10% 3% 15% 12% 33% 35% 49% 77% 41% 10% 64% 65% 62% 10% 22% 31% 26% 22% 98% 38% 40% 60%Equipment Failure 58% 31% 26% 58% 22% 23% 36% 40% 13% 6% 5% 3% 11% 7% 19% 63% 63% 28% 12% 17% 1% 29% 21% 13%Operation 19% 28% 1% 2% 8% 6% 16% 13% 2% 16% 54% 32% 2% 5% - 12% 11% - - - - 7% 13% 4%Other 1% 5% 6% 2% 3% 36% 5% 3% 29% 0% 0% 54% 1% 0% - 1% 1% 37% 44% 38% 1% 10% 11% 16%Vegetation/Animal 0% 0% 56% 1% 3% - 9% 9% 7% - - - 9% 11% - 1% 1% - - - - 3% 4% -Weather/Fire/Earthquake - - 0% 34% 49% 23% 1% 1% - 1% 0% - 13% 11% 19% 12% 3% 4% 18% 22% - 12% 11% 7%

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

23 Circuits Serving City of Tulare -- Total Customers: 25,900

Average Reliability of 23 Circuits Serving City of Tulare

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.

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CircuitHistory1


AURORA(12KV) - Customers: 2,608 0.5 0.0 1.8 395.6 1.1 1.2 94.2 1.0 - - - - 2.2 0.0 - 157.1 1.1 - - - - 159.4 1.1 -3rd Party - - - - - - - - - - - - - - - - - - - - - - - -Equipment Failure - - - - - - 1% 1% - - - - - - - 100% 100% - - - - 99% 97% -Operation 100% 100% - 2% 5% 100% - - - - - - 100% 100% - - - - - - - 1% 3% -Other - - - - - - - - - - - - - - - - - - - - - - - -Vegetation/Animal - - 100% - - - 99% 99% - - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - - 98% 95% - - - - - - - - - - - - - - - - - - -

CANBY(12KV) - Customers: 1,305 5.2 0.3 3.0 34.8 0.1 0.0 100.7 1.1 1.0 8.4 0.0 0.1 61.4 1.0 - - - 1.0 34.4 1.0 - 104.2 2.1 1.13rd Party - - - - - - 58% 87% 100% - - - 100% 100% - - - 100% - - - 59% 48% 93%Equipment Failure - - 33% 38% 22% - - - - 64% 34% 100% - - - - - - 100% 100% - 38% 51% 7%Operation 100% 100% - 62% 78% 100% 33% 11% - 36% 66% - - - - - - - - - - 3% 2% -Other - - - - - - 8% 2% - - - - - - - - - - - - - - - -Vegetation/Animal - - 67% - - - - - - - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - -

CARTMILL(12KV) - Customers: 749 0.6 0.0 4.0 69.1 1.3 - 155.3 0.8 0.8 - - - - - - - - - - - - - - -3rd Party - - - 87% 95% - 98% 95% 100% - - - - - - - - - - - - - - -Equipment Failure - - 25% 8% 2% - - - - - - - - - - - - - - - - - - -Operation 100% 100% - - - - - - - - - - - - - - - - - - - - - -Other - - 25% - - - - - - - - - - - - - - - - - - - - -Vegetation/Animal - - 50% - - - - - - - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - - 4% 3% - 2% 5% - - - - - - - - - - - - - - - -

CATTLE(12KV) - Customers: 995 80.8 2.2 3.7 31.2 0.2 - 22.9 0.3 0.1 17.2 0.1 0.0 0.2 0.0 0.1 0.5 0.0 - 8.1 0.2 1.0 26.1 0.3 1.23rd Party 38% 54% 19% - - - 98% 99% 100% 100% 100% 100% - - 100% - - - 100% 100% 100% 97% 99% 100%Equipment Failure 0% 0% 27% 1% 7% - 1% 0% - - - - 100% 100% - 100% 100% - - - - 3% 1% -Operation 61% 46% - 21% 67% - 1% 1% - - - - - - - - - - - - - - - -Other - - - - - - - - - - - - - - - - - - - - - - - -Vegetation/Animal - - 54% - - - - - - - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - - 78% 26% - - - - - - - - - - - - - - - - - - -

Reliability Histories for Individual Circuits Serving City of Tulare - 1 of 62014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017 2017

15

CircuitHistory2


CHEESE(12KV) - Customers: 97 523.0 1.0 2.0 147.5 1.2 0.9 - - - 4.9 0.0 - - - - - - - - - - 4.9 0.0 -3rd Party - - - 7% 9% 100% - - - - - - - - - - - - - - - - - -Equipment Failure 100% 100% - - - - - - - - - - - - - - - - - - - - - -Operation - - - 5% 4% - - - - 100% 100% - - - - - - - - - - 100% 100% -Other - - - - - - - - - - - - - - - - - - - - - - - -Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - - 88% 86% - - - - - - - - - - - - - - - - - - -

ELK(12KV) - Customers: 170 49.1 0.9 1.9 13.3 0.0 - 458.6 1.4 3.6 - - - - - - 431.4 0.5 0.6 - - - 431.4 0.5 0.63rd Party 34% 49% - - - - 96% 97% 69% - - - - - - - - - - - - - - -Equipment Failure 25% 5% 42% 93% 82% - 0% 0% 16% - - - - - - 1% 3% - - - - 1% 3% -Operation 37% 45% - 7% 18% - 1% 1% - - - - - - - - - - - - - - - -Other - - - - - - 1% 1% - - - - - - - - - - - - - - - -Vegetation/Animal 4% 0% - - - - - - 16% - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - 58% - - - 2% 1% - - - - - - - 99% 97% 100% - - - 99% 97% 100%

FOGG(12KV) - Customers: 1,622 241.9 3.2 5.7 51.3 0.4 0.8 17.2 0.0 1.0 - - - 86.9 1.1 0.9 15.2 0.1 1.0 13.4 0.5 2.5 115.5 1.7 4.43rd Party 68% 63% - - - - - - - - - - 72% 90% - - - - 100% 100% 100% 66% 90% 57%Equipment Failure 6% 5% 48% 5% 1% - 3% 6% - - - - 28% 10% 100% 47% 34% 100% - - - 27% 7% 43%Operation 25% 32% - 5% 42% - - - - - - - - - - - - - - - - - - -Other - - 17% 38% 17% - 97% 94% 100% - - - - - - - - - - - - - - -Vegetation/Animal - - 35% - - - - - - - - - - - - 26% 34% - - - - 3% 1% -Weather/Fire/Earthquake - - - 52% 41% 100% - - - - - - - - - 28% 33% - - - - 4% 1% -

GLOVER(12KV) - Customers: 197 11.6 0.0 1.0 481.3 3.5 1.5 195.0 2.0 5.2 35.6 1.0 - 57.7 1.0 - 59.3 0.4 0.7 69.9 1.0 - 222.5 3.4 0.73rd Party - - - 6% 26% 15% 47% 39% 28% - - - 100% 100% - - - - - - - 26% 30% -Equipment Failure 71% 52% - 6% 1% - 47% 50% 30% 100% 100% - - - - 12% 3% - - - - 19% 30% -Operation 29% 48% - 1% 1% - 4% 10% 28% - - - - - - - - - - - - - - -Other - - 100% 2% 0% - - - - - - - - - - 6% 10% - 100% 100% - 33% 31% -Vegetation/Animal - - - - - - - - 15% - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - - 85% 71% 85% 2% 2% - - - - - - - 81% 87% 100% - - - 22% 10% 100%

2017

Reliability Histories for Individual Circuits Serving City of Tulare - 2 of 62014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017

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CircuitHistory3


GREEN(12KV) - Customers: 214 72.8 0.5 2.0 282.3 1.4 2.0 30.5 0.8 - - - - - - 0.2 126.2 1.1 1.0 - - - 126.2 1.1 1.23rd Party 84% 92% 100% - - - 78% 97% - - - - - - 50% 100% 100% 100% - - - 100% 100% 91%Equipment Failure 3% 4% - 21% 72% 50% 22% 3% - - - - - - - - - - - - - - - -Operation 13% 5% - 9% 10% - - - - - - - - - - - - - - - - - - -Other - - - 29% 8% - - - - - - - - - - - - - - - - - - -Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - - 41% 10% 50% - - - - - - - - 50% - - - - - - - - 9%

GUERNSEY(12KV) - Customers: 1,164 - - 3.0 1545.7 2.2 2.0 130.8 1.1 0.0 - - - 48.6 1.0 - 78.0 0.6 - - - - 126.7 1.6 -3rd Party - - - 1% 46% 50% - - - - - - - - - - - - - - - - - -Equipment Failure - - 33% 98% 52% 50% 100% 100% 100% - - - - - - - - - - - - - - -Operation - - - 0% 1% - - - - - - - - - - 100% 100% - - - - 62% 36% -Other - - - - - - - - - - - - - - - - - - - - - - - -Vegetation/Animal - - 67% - - - - - - - - - 100% 100% - - - - - - - 38% 64% -Weather/Fire/Earthquake - - - 1% 1% - - - - - - - - - - - - - - - - - - -

MATHIAS(12KV) - Customers: 1,352 1.9 0.0 3.0 62.8 0.7 0.9 1.2 0.2 2.0 18.9 1.5 - - - - - - - - - - 18.9 1.5 -3rd Party - - - - - - 100% 100% 50% - - - - - - - - - - - - - - -Equipment Failure 38% 35% 33% - - - - - - - - - - - - - - - - - - - - -Operation 62% 65% - - - - - - - 100% 100% - - - - - - - - - - 100% 100% -Other - - - - - - - - 50% - - - - - - - - - - - - - - -Vegetation/Animal - - 67% - - - - - - - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - - 100% 100% 100% - - - - - - - - - - - - - - - - - -

MID VALLE(12KV) - Customers: 1,083 48.4 0.2 0.9 109.1 1.1 3.0 10.1 0.1 - 1.0 0.0 - 5.1 0.4 - - - - 72.0 1.4 0.6 78.1 1.8 0.63rd Party - - - 38% 73% 67% - - - - - - - - - - - - 34% 28% 100% 31% 22% 100%Equipment Failure 100% 100% 100% 49% 26% - 100% 100% - - - - 26% 0% - - - - - - - 2% 0% -Operation - - - - - - - - - - - - 74% 100% - - - - - - - 5% 22% -Other - - - - - 33% - - - 100% 100% - - - - - - - 66% 72% - 62% 57% -Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - - 13% 1% - - - - - - - - - - - - - - - - - - -


17

CircuitHistory4


MILK(12KV) - Customers: 1,817 64.9 1.1 3.0 902.1 2.0 - 32.1 1.0 0.0 - - - 17.8 0.2 0.8 4.2 0.0 - 22.0 0.2 - 44.1 0.4 0.83rd Party - - - 0% 1% - 1% 1% 100% - - - 100% 100% 100% - - - - - - 40% 49% 100%Equipment Failure 99% 98% 33% 92% 49% - 47% 90% - - - - - - - - - - - - - - - -Operation 1% 2% - 0% 1% - 52% 8% - - - - - - - 21% 35% - - - - 2% 4% -Other - - - - - - - - - - - - - - - 79% 65% - 100% 100% - 58% 47% -Vegetation/Animal - - 67% - - - - - - - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - - 7% 49% - - - - - - - - - - - - - - - - - - -

OAKLAND(12KV) - Customers: 170 143.9 1.7 5.2 470.8 5.1 - - - 4.0 213.3 1.1 - - - - - - 1.0 0.6 0.0 - 213.9 1.1 1.03rd Party 74% 99% 82% 24% 42% - - - 26% 96% 95% - - - - - - 100% - - - 95% 94% 100%Equipment Failure 26% 1% 18% 1% 0% - - - 25% - - - - - - - - - 100% 100% - 0% 1% -Operation - - - 5% 18% - - - - - - - - - - - - - - - - - - -Other - - - 45% 21% - - - 25% - - - - - - - - - - - - - - -Vegetation/Animal - - - - - - - - 25% - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - - 25% 19% - - - - 4% 5% - - - - - - - - - - 4% 5% -

PAIGE(12KV) - Customers: 2,105 227.6 0.9 3.1 156.1 3.0 1.0 21.5 0.1 0.0 79.2 0.8 0.1 0.3 0.0 - 0.1 0.0 1.0 - - 1.0 79.6 0.8 2.23rd Party - - - - - - - - - 100% 100% 100% - - - - - - - - 100% 99% 99% 53%Equipment Failure 99% 97% 6% 17% 5% - 72% 41% - - - - - - - 100% 100% - - - - 0% 0% -Operation 1% 3% - 16% 28% - 28% 59% 100% - - - 100% 100% - - - - - - - 0% 1% -Other - - 31% - - 100% - - - - - - - - - - - 100% - - - - - 47%Vegetation/Animal - - 63% - - - - - - - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - - 67% 67% - - - - - - - - - - - - - - - - - - -

RINKER(12KV) - Customers: 1,101 50.8 0.5 2.9 103.6 0.5 1.0 - - - - - - 23.1 0.7 0.8 - - - - - - 23.1 0.7 0.83rd Party - - 34% - - - - - - - - - 100% 100% 100% - - - - - - 100% 100% 100%Equipment Failure - - - 100% 100% 100% - - - - - - - - - - - - - - - - - -Operation 100% 100% - - - - - - - - - - - - - - - - - - - - - -Other - - - - - - - - - - - - - - - - - - - - - - - -Vegetation/Animal - - 66% - - - - - - - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - -


18

CircuitHistory5


SERENITY(12KV) - Customers: 1,044 501.1 3.4 3.2 525.6 4.4 2.7 313.9 2.8 1.8 - - - 7.2 0.1 - 45.9 1.0 - - - 0.1 53.1 1.1 0.13rd Party 12% 42% 14% - - - 15% 52% 95% - - - 100% 100% - 100% 100% - - - - 100% 100% -Equipment Failure 88% 58% 86% 9% 22% 36% 47% 32% 5% - - - - - - - - - - - - - - -Operation - - - 0% 0% - 36% 13% - - - - - - - - - - - - - - - -Other - - - 1% 3% 36% - - - - - - - - - - - - - - 100% - - 100%Vegetation/Animal - - - 8% 19% - - - - - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - - 81% 57% 28% 2% 3% - - - - - - - - - - - - - - - -

STEELMAN(12KV) - Customers: 1,014 24.2 0.2 2.0 4.5 0.0 - 14.7 0.9 - - - - 17.4 1.0 0.9 3.7 0.1 - 67.9 1.1 0.1 89.0 2.2 1.03rd Party 60% 50% 50% - - - - - - - - - 100% 100% 100% 91% 99% - 22% 7% - 40% 54% 93%Equipment Failure 3% 1% - 89% 25% - - - - - - - - - - 9% 1% - - - 100% 0% 0% 7%Operation - - - 11% 75% - 100% 100% - - - - - - - - - - - - - - - -Other - - - - - - - - - - - - - - - - - - 78% 93% - 60% 46% -Vegetation/Animal 37% 50% 50% - - - - - - - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - -

SWALL(12KV) - Customers: 1,311 125.2 0.3 3.0 - - - 47.4 0.2 - - - - - - - - - - - - - - - -3rd Party - - - - - - - - - - - - - - - - - - - - - - - -Equipment Failure 99% 87% 33% - - - 65% 21% - - - - - - - - - - - - - - - -Operation 1% 13% - - - - 35% 79% - - - - - - - - - - - - - - - -Other - - - - - - - - - - - - - - - - - - - - - - - -Vegetation/Animal - - 67% - - - - - - - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - -

TLSMITH(12KV) - Customers: 569 111.3 1.1 1.9 129.3 2.0 - 66.5 1.6 3.0 3.9 0.1 - 78.6 2.0 - 1.0 0.0 - 135.7 1.6 0.4 219.1 3.8 0.43rd Party 100% 100% 48% - - - - - 33% - - - 65% 50% - - - - 56% 36% 100% 58% 43% 100%Equipment Failure 0% 0% - 2% 0% - 76% 62% - - - - 34% 49% - - - - 3% 1% - 14% 27% -Operation - - - 1% 0% - 24% 38% - 100% 100% - 2% 0% - - - - - - - 2% 3% -Other - - - 32% 49% - - - 33% - - - - - - 100% 100% - 42% 62% - 26% 27% -Vegetation/Animal - - 52% 0% 0% - - - 33% - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - - 65% 50% - - - - - - - - - - - - - - - - - - -


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CircuitHistory6


TUGGLE(12KV) - Customers: 2,194 72.9 1.0 3.5 190.3 2.1 1.5 75.1 1.8 0.9 - - - 8.3 0.0 - 0.5 0.0 - 2.4 0.0 - 11.2 0.1 -3rd Party - - - 11% 27% - - - - - - - - - - - - - - - - - - -Equipment Failure 83% 97% - 28% 25% 33% 73% 96% 100% - - - 70% 48% - 100% 100% - 100% 100% - 78% 72% -Operation 17% 2% 14% - - - 27% 4% - - - - 4% 20% - - - - - - - 3% 10% -Other - - - - - - - - - - - - 26% 33% - - - - - - - 19% 18% -Vegetation/Animal 0% 0% 86% - - - - - - - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - - 61% 48% 67% - - - - - - - - - - - - - - - - - -

TURNER(12KV) - Customers: 1,203 79.7 1.4 2.0 7.2 0.0 1.0 2.5 0.0 - - - - 64.8 0.5 0.9 71.8 1.0 - - - - 136.7 1.5 0.93rd Party - - - - - - - - - - - - 100% 100% 100% - - - - - - 47% 31% 100%Equipment Failure - - - 100% 100% - - - - - - - - - - 99% 99% - - - - 52% 68% -Operation 82% 26% - - - - 100% 100% - - - - - - - 1% 1% - - - - 1% 1% -Other 18% 74% - - - 100% - - - - - - - - - - - - - - - - - -Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - -

WHEY(12KV) - Customers: 1,816 78.3 2.1 4.3 14.7 0.1 4.0 142.7 1.3 - 5.1 0.0 1.6 42.2 0.6 0.8 0.3 0.0 - 44.1 1.0 - 91.7 1.6 2.43rd Party 40% 44% 30% - - - 52% 76% - - - - - - - - - - - - - - - -Equipment Failure 1% 2% 23% 100% 100% 24% 28% 3% - 22% 18% - 0% 0% - 100% 100% - - - - 2% 0% -Operation 57% 54% - - - - - - - 78% 82% 37% - - - - - - - - - 4% 1% 25%Other 2% 0% - - - 76% 20% 21% - - - 63% - - - - - - - - - - - 42%Vegetation/Animal - - 47% - - - - - - - - - - - - - - - - - - - - -Weather/Fire/Earthquake - - - - - - - - - - - - 100% 100% 100% - - - 100% 100% - 94% 99% 33%

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


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Circuit Reliability Review - sce.com · Circuit Reliability Review ... • We are investing more than $13 bil lion in the power distribution gr id over three years ... transformer,

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