Circuit Reliability Review

Transcription

1 Circuit Reliability Review Tulare District 2 January 2018

2 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 ( ). 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 twoway 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

3 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

4 Reliability Metrics MOMENTARY OUTAGES: OUTAGES LASTING 5 MINUTES OR LESS SUSTAINED OUTAGES: OUTAGES LASTING LONGER THAN 5 MINUTES MAIFI: o The number of times the average customer is interrupted by Momentary outages each year. 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

5 Cities in the SAN JOAQUIN District CityList1 ARMONA COUNTY OF TULARE DELANO DUCOR EARLIMART EAST PORTERVILLE EXETER FARMERSVILLE GOSHEN HANFORD IVANHOE KINGS COUNTY LEMON COVE LINDSAY MCFARLAND PIXLEY POPLAR-COTTON CENTER PORTERVILLE RICHGROVE SPRINGVILLE STRATHMORE TERRA BELLA THREE RIVERS TIPTON VISALIA WOODLAKE WOODVILLE CITY OF TULARE TULE RIVER INDIAN TRIBE 5

6 * 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

7 Overview of Tulare District 2 CircuitList1 There are 72 circuits that serve Tulare District 2 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers ACALA(12KV) 1,012 LANZA(12KV) 512 SURPRISE(12KV) AURORA(12KV) 2,608 LINDER(12KV) 472 SWANSON(12KV 1,121 - BALL(12KV) 285 LOGAN(12KV) 941 TAGUS(12KV) BEAVER(12KV) 165 MACOMBER(12KV) 150 TLSMITH(12KV) BLANCA(12KV) 49 MANZANILLO(12KV) 259 VOSSLER(12KV) BLINKER(12KV) 151 MARSH(12KV) 1,313 WALLACE(12KV) 1,539 - BOBCAT(12KV) 71 MATHIAS(12KV) 1,352 WELCH(12KV) BOONE(12KV) 139 MERRIT(12KV) 204 WESTON(12KV) BUDD(12KV) 242 MID VALLE(12KV) 1,083 WHEY(12KV) 1,816 - BURUM(12KV) 154 MILK(12KV) 1,817 WILBUR(12KV) CALLISON(12KV) 221 MONROE(12KV) 485 WILDFLOWER( CANBY(12KV) 1,305 NEWMAN(12KV) 133 WINDT(12KV) CATTLE(12KV) 995 NICKERSON(12KV) CLOER(12KV) 327 NOAKES(12KV) COOPER(12KV) 182 OAKLAND(12KV) COTTON(12KV) 155 OSNER(12KV) 1, DORAN(12KV) 287 PRATT(12KV) DRAKE(12KV) 548 QUAIL(12KV) EDENDALE(12KV) 116 RADNOR(12KV) 2, ELK(12KV) 170 RICHGROVE(12KV) FLORY(12KV) 641 RIECK(12KV) FOGG(12KV) 1,622 RINKER(12KV) 1, GARWOOD(12KV) 18 SARGENT(12KV) GLOVER(12KV) 197 SAUCELITO(12KV) GOPHER(12KV) 117 SCHENLEY(12KV) GREEN(12KV) 214 SERENITY(12KV) 1, HARMONY(12KV) 313 SLADE(12KV) HIGBY(12KV) 1,420 STEELMAN(12KV) 1, HOBSON(12KV) 139 STONE(12KV) HOUSTON(12KV) 161 SUNSET(12KV) Grand Total 39,923 7

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9 Causes of Repair Outages in Tulare District SAIDIChart Contributions to SAIDI by Outage Cause Equipment Failure e.g., in-service failure of transformer, switch, or conductors Vegetation/Animal e.g., tree branch, rodent, or bird causing a short circuit between conductors Other e.g., patrolled but no cause found Operations e.g., urgent maintenance w/o 3 day notice 3 rd Party e.g., balloon, car hit pole, dig in Vegetation /Animal 1.0% Weather /Fire /Earthquake 10.3% Other 10.2% Operation 9.3% Equipment Failure 34.5% 3rd Party 34.6% 3rd Party Equipment Failure Operation Other Vegetation /Animal Weather /Fire /Earthquake SAIDI = the cumulative amount of time the average customer is interrupted by sustained outages each year. 9

10 Causes of Repair Outages in Tulare District SAIFIChart Contributions to SAIFI by Outage Cause Equipment Failure e.g., in-service failure of transformer, switch, or conductors Vegetation/Animal e.g., tree branch, rodent, or bird causing a short circuit between conductors Other e.g., patrolled but no cause found Operations e.g., urgent maintenance w/o 3 day notice 3 rd Party e.g., balloon, car hit pole, dig in Vegetation /Animal 0.6% Weather /Fire /Earthquake 9.8% Other 12.7% Operation 11.9% Equipment Failure 25.9% 3rd Party 39.1% 3rd Party Equipment Failure Operation Other Vegetation /Animal Weather /Fire /Earthquake SAIFI = the number of times the average customer is interrupted by sustained outages each year 10

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13 Back-up Slides Reliability Histories of Circuits Serving Tulare District 2 Updated through Dec 2017

14 Average Reliability of 72 Circuits Serving Tulare District 2 CitySummary st Qtr nd Qtr rd Qtr th Qtr SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI 72 Circuits Serving Tulare District 2 -- Total Customers: 39, rd Party 19% 30% 14% 23% 28% 16% 37% 42% 29% 18% 8% 6% 46% 60% 51% 49% 59% 34% 16% 19% 44% 35% 39% 36% Equipment Failure 47% 39% 31% 36% 27% 20% 30% 24% 19% 57% 56% 26% 11% 12% 20% 28% 20% 18% 49% 23% 6% 35% 26% 17% Operation 9% 15% 1% 3% 5% 7% 12% 11% 5% 12% 28% 11% 30% 18% 6% 1% 3% 10% 2% 2% 1% 9% 12% 6% Other 8% 9% 21% 4% 7% 34% 13% 15% 26% 4% 2% 54% 4% 2% 3% 6% 4% 10% 26% 42% 47% 10% 13% 28% Vegetation/Animal 3% 4% 33% 1% 3% 7% 3% 4% 16% 3% 2% - 1% 0% 7% 1% 0% 1% % 1% 2% Weather/Fire/Earthquake 13% 3% 1% 33% 30% 15% 4% 4% 5% 7% 4% 3% 8% 8% 13% 16% 12% 28% 7% 14% 2% 10% 10% 11% SCE SYSTEMWIDE Notes: No outages are excluded from the metrics. Outage Causes: Other: e.g., patrolled but no cause could be found Operations: e.g., urgent maintenance w/o 3 day notice to customers 3 rd Party: e.g., balloons, car hit pole, dig in Vegetation/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

15 Reliability Histories for Individual Circuits Serving Tulare District 2-1 of st Qtr nd Qtr rd Qtr th Qtr SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI ACALA(12KV) - Customers: 1, CircuitHistory rd Party 21% 40% % 43% 33% Equipment Failure 20% 6% 63% 81% 50% % 100% - 28% 13% - Operation 11% 4% % 100% % 88% - Other 2% 10% 16% 19% 50% - 85% 57% 67% % % Vegetation/Animal 46% 40% 21% Weather/Fire/Earthquake AURORA(12KV) - Customers: 2, rd Party Equipment Failure % 1% % 100% % 97% - Operation 100% 100% - 2% 5% 100% % 100% % 3% - Other Vegetation/Animal % % 99% Weather/Fire/Earthquake % 95% BALL(12KV) - Customers: rd Party % 32% 17% % 92% - 30% 21% - Equipment Failure 6% 31% 100% 14% 18% - 45% 20% Operation 87% 67% - 2% 45% 20% 2% 1% 100% % 8% - 1% 2% - Other 7% 1% - 4% 1% - 53% 79% Vegetation/Animal % 2% 32% % 100% 100% % 1% 28% Weather/Fire/Earthquake % 1% 32% % 100% 100% % 76% 72% BEAVER(12KV) - Customers: rd Party % 47% - 93% 99% 32% Equipment Failure 50% 59% - 12% 2% 42% 7% 1% Operation 50% 41% - 1% 1% Other % % Vegetation/Animal % 0% % Weather/Fire/Earthquake % 49%

16 Reliability Histories for Individual Circuits Serving Tulare District 2-2 of 18 CircuitHistory st Qtr nd Qtr rd Qtr th Qtr SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI BLANCA(12KV) - Customers: rd Party % 98% 25% Equipment Failure 100% 100% % 100% Operation Other % % Vegetation/Animal % Weather/Fire/Earthquake % 2% BLINKER(12KV) - Customers: rd Party % 98% Equipment Failure % 27% 2% - 5% 5% % 1% % 1% - Operation % 2% Other % % Vegetation/Animal % Weather/Fire/Earthquake % 93% 55% % 99% % 99% - BOBCAT(12KV) - Customers: rd Party % 100% Equipment Failure 94% 42% 100% 9% 3% Operation 6% 58% Other % % % % Vegetation/Animal % 1% % Weather/Fire/Earthquake % 96% % 100% % 100% - BOONE(12KV) - Customers: rd Party % 100% 99% 35% % % Equipment Failure 100% 100% - 0% 1% Operation % 100% 38% 100% 100% 38% Other % % Vegetation/Animal % Weather/Fire/Earthquake

17 Reliability Histories for Individual Circuits Serving Tulare District 2-3 of 18 CircuitHistory st Qtr nd Qtr rd Qtr th Qtr SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI BUDD(12KV) - Customers: rd Party 53% 10% - 58% 26% 34% Equipment Failure 38% 58% 37% 7% 2% % 100% % 100% - 100% 100% - Operation % 72% - 100% 100% Other 9% 32% 35% Vegetation/Animal % % Weather/Fire/Earthquake BURUM(12KV) - Customers: rd Party % 80% 50% % % Equipment Failure % 100% Operation % 1% % 100% % 2% - Other % % 100% 100% % 98% 15% Vegetation/Animal Weather/Fire/Earthquake 100% 100% - 36% 20% CALLISON(12KV) - Customers: rd Party % 3% % 100% % 31% - Equipment Failure 6% 4% - 70% 97% 24% 77% 96% 100% 100% 100% 100% 2% 3% % 100% - 40% 64% 17% Operation 0% 0% - 8% 2% % 81% % 4% - Other 59% 48% 75% % 1% 1% % 17% % % 1% 83% Vegetation/Animal % % Weather/Fire/Earthquake 35% 48% - 22% 1% CANBY(12KV) - Customers: 1, rd Party % 87% 100% % 100% % % 48% 93% Equipment Failure % 38% 22% % 34% 100% % 100% - 38% 51% 7% Operation 100% 100% - 62% 78% 100% 33% 11% - 36% 66% % 2% - Other % 2% Vegetation/Animal % Weather/Fire/Earthquake

18 Reliability Histories for Individual Circuits Serving Tulare District 2-4 of 18 CircuitHistory st Qtr nd Qtr rd Qtr th Qtr SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI CATTLE(12KV) - Customers: rd Party 38% 54% 19% % 99% 100% 100% 100% 100% % % 100% 100% 97% 99% 100% Equipment Failure 0% 0% 27% 1% 7% - 1% 0% % 100% - 100% 100% % 1% - Operation 61% 46% - 21% 67% - 1% 1% Other Vegetation/Animal % Weather/Fire/Earthquake % 26% CLOER(12KV) - Customers: rd Party % 0% 33% Equipment Failure 59% 1% 100% % 3% % 100% % 100% - Operation % 97% 45% Other 41% 99% Vegetation/Animal Weather/Fire/Earthquake % 100% 67% % COOPER(12KV) - Customers: rd Party 95% 99% % 36% - 77% 63% 35% % 99% 54% % 88% 43% Equipment Failure 5% 1% - 14% 47% 25% 46% 46% 72% 23% 38% 65% % 9% 38% Operation % 22% 9% 19% % 1% % 0% - Other % 1% 1% % 100% 100% - 1% 3% 19% Vegetation/Animal % % Weather/Fire/Earthquake % 43% 32% 6% 19% 28% COTTON(12KV) - Customers: rd Party % 41% Equipment Failure 4% 1% - 2% 1% - 100% 100% - 99% 99% 100% % 99% 100% Operation 0% 0% - 32% 18% % 1% % 1% - Other 4% 32% 100% % Vegetation/Animal 4% 0% Weather/Fire/Earthquake 88% 66% - 9% 41% 67%

19 Reliability Histories for Individual Circuits Serving Tulare District 2-5 of 18 CircuitHistory st Qtr nd Qtr rd Qtr th Qtr SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI DORAN(12KV) - Customers: rd Party 75% 50% 100% 35% 51% 55% 100% 100% 100% Equipment Failure 25% 50% - 10% 1% Operation Other % 0% Vegetation/Animal Weather/Fire/Earthquake % 48% 45% DRAKE(12KV) - Customers: rd Party 86% 64% 24% 35% 66% 83% 48% 41% 70% % 67% % 11% - Equipment Failure 7% 15% 23% 4% 0% - 5% 1% % 33% % 5% - Operation 0% 0% - 2% 1% % 19% % 16% - Other 7% 21% 31% % 38% 11% % % 81% % 5% 68% 100% Vegetation/Animal % Weather/Fire/Earthquake % 33% 17% 10% 21% 19% EDENDALE(12KV) - Customers: rd Party 45% 61% % % 100% % 100% - Equipment Failure 0% 1% - 28% 48% 50% % Operation 55% 38% 21% Other % 10% 6% 50% Vegetation/Animal % 62% 47% Weather/Fire/Earthquake ELK(12KV) - Customers: rd Party 34% 49% % 97% 69% Equipment Failure 25% 5% 42% 93% 82% - 0% 0% 16% % 3% % 3% - Operation 37% 45% - 7% 18% - 1% 1% Other % 1% Vegetation/Animal 4% 0% % Weather/Fire/Earthquake % % 1% % 97% 100% % 97% 100% 19

20 Reliability Histories for Individual Circuits Serving Tulare District 2-6 of 18 CircuitHistory st Qtr nd Qtr rd Qtr th Qtr SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI FLORY(12KV) - Customers: rd Party % 94% % 99% % 98% - Equipment Failure % 26% 45% 50% % 3% 1% % 1% 31% Operation 100% 100% - 0% 0% - 5% 6% % 100% - 2% 0% - Other % % % % Vegetation/Animal % 100% % 1% - Weather/Fire/Earthquake % 55% % 0% 100% % 0% 45% FOGG(12KV) - Customers: 1, rd Party 68% 63% % 90% % 100% 100% 66% 90% 57% Equipment Failure 6% 5% 48% 5% 1% - 3% 6% % 10% 100% 47% 34% 100% % 7% 43% Operation 25% 32% - 5% 42% Other % 38% 17% - 97% 94% 100% Vegetation/Animal % % 34% % 1% - Weather/Fire/Earthquake % 41% 100% % 33% % 1% - GARWOOD(12KV) - Customers: rd Party % Equipment Failure % 100% Operation Other % Vegetation/Animal Weather/Fire/Earthquake GLOVER(12KV) - Customers: rd Party % 26% 15% 47% 39% 28% % 100% % 30% - Equipment Failure 71% 52% - 6% 1% - 47% 50% 30% 100% 100% % 3% % 30% - Operation 29% 48% - 1% 1% - 4% 10% 28% Other % 2% 0% % 10% - 100% 100% - 33% 31% - Vegetation/Animal % Weather/Fire/Earthquake % 71% 85% 2% 2% % 87% 100% % 10% 100% 20

21 Reliability Histories for Individual Circuits Serving Tulare District 2-7 of 18 CircuitHistory st Qtr nd Qtr rd Qtr th Qtr SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI GOPHER(12KV) - Customers: rd Party % 32% 31% 17% 66% - 100% 100% % 10% - Equipment Failure 100% 100% - 1% 1% - 6% 1% 31% % % Operation % 1% % 100% % 100% - 64% 86% - Other % % 71% 32% % 100% % 4% - Vegetation/Animal % 2% - 6% 1% 69% Weather/Fire/Earthquake % 65% GREEN(12KV) - Customers: rd Party 84% 92% 100% % 97% % 100% 100% 100% % 100% 91% Equipment Failure 3% 4% - 21% 72% 50% 22% 3% Operation 13% 5% - 9% 10% Other % 8% Vegetation/Animal Weather/Fire/Earthquake % 10% 50% % % HARMONY(12KV) - Customers: rd Party 82% 39% 67% 28% 27% - 14% 51% - 100% 100% 100% % 100% - 98% 99% - 96% 94% 25% Equipment Failure 7% 1% - 17% 27% 74% 49% 45% % 1% - 1% 1% - Operation % 0% - 2% 0% % 100% % 6% - Other 11% 60% 33% 22% 10% - 35% 3% 100% Vegetation/Animal % % Weather/Fire/Earthquake % 35% 26% HIGBY(12KV) - Customers: 1, rd Party 35% 51% % 100% - 100% 100% 100% 75% 89% 67% 9% 9% - 65% 63% 76% Equipment Failure 40% 8% 19% 89% 89% 100% 97% 99% 56% % 2% - 12% 9% - 11% 4% - Operation 4% 4% 20% 0% 0% - 3% 1% % 1% % 0% - Other % 6% 6% % % 81% - 13% 27% - Vegetation/Animal 20% 38% 34% % Weather/Fire/Earthquake % 4% % 9% 33% % 5% 24% 21

22 Reliability Histories for Individual Circuits Serving Tulare District 2-8 of 18 CircuitHistory st Qtr nd Qtr rd Qtr th Qtr SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI HOBSON(12KV) - Customers: rd Party % 25% % 20% - Equipment Failure 70% 33% 26% 83% 95% - 27% 1% Operation % 4% - 73% 99% % 100% % 17% - Other 30% 67% 48% % % % 100% 100% - 9% 2% 100% Vegetation/Animal % % 75% % 61% - Weather/Fire/Earthquake % 1% HOUSTON(12KV) - Customers: rd Party % 100% % 80% 100% % 99% 100% 90% 93% 100% Equipment Failure 26% 1% % 1% - 3% 1% - Operation 32% 22% Other 41% 78% % 20% % 6% - Vegetation/Animal Weather/Fire/Earthquake % 100% 100% LANZA(12KV) - Customers: rd Party % 75% Equipment Failure % 93% - 2% 0% - 98% 87% % 2% - Operation % 7% % 13% % 0% - Other % 24% 25% % 100% % 97% - Vegetation/Animal Weather/Fire/Earthquake LINDER(12KV) - Customers: rd Party 53% 20% 14% 53% 25% 20% 71% 76% 55% % 98% % 66% - Equipment Failure 38% 47% 17% 34% 72% - 29% 24% 3% % 50% % 0% - Operation 10% 33% - 0% 0% % 1% 50% 100% 100% - 10% 34% 50% Other % 6% 1% 40% % % 50% - 1% 1% 50% % 1% 50% Vegetation/Animal % Weather/Fire/Earthquake % 1%

23 Reliability Histories for Individual Circuits Serving Tulare District 2-9 of 18 CircuitHistory st Qtr nd Qtr rd Qtr th Qtr SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI LOGAN(12KV) - Customers: rd Party % 3% - 9% 4% - 100% 100% % 1% - Equipment Failure 88% 97% 16% 11% 1% - 33% 11% % 1% % 1% - Operation 11% 3% - 1% 2% - 4% 2% % 99% % 98% - Other 1% 0% 84% 60% 89% 100% 1% 0% Vegetation/Animal % 3% Weather/Fire/Earthquake % 1% - 54% 82% MACOMBER(12KV) - Customers: rd Party 10% 61% 36% 30% 26% 12% 88% 92% 15% % 99% % 81% - Equipment Failure 1% 1% 6% 17% 38% 62% 2% 1% 85% % 1% % 1% - Operation % 100% - 77% 18% - Other 89% 38% 40% % 7% % % % % Vegetation/Animal % % Weather/Fire/Earthquake % 36% MANZANILLO(12KV) - Customers: rd Party % 38% % 100% - 2% 1% - Equipment Failure 28% 49% 57% 45% 39% 20% 14% 1% - 30% 50% - 8% 9% - 100% 100% % 48% - Operation 6% 18% % 91% % 3% - Other % 1% - 86% 99% Vegetation/Animal % Weather/Fire/Earthquake 67% 33% 43% 15% 23% 49% % 50% % 48% - MARSH(12KV) - Customers: 1, rd Party 25% 22% 12% 58% 63% 9% 7% 3% 1% % 16% 51% % 4% 3% Equipment Failure 71% 55% 44% 21% 10% - 78% 71% 95% 96% 92% 100% % 65% 84% Operation 3% 22% - 10% 10% - 15% 26% 1% % 84% % 22% - Other 1% 1% 44% 1% 5% 50% - - 1% % % 100% 100% - 1% 4% 9% Vegetation/Animal % 13% 38% - - 1% 4% 8% % % 5% 3% Weather/Fire/Earthquake % 0% 3%

24 Reliability Histories for Individual Circuits Serving Tulare District 2-10 of st Qtr nd Qtr rd Qtr 2017 CircuitHistory10 4th Qtr SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI MATHIAS(12KV) - Customers: 1, rd Party % 100% 50% Equipment Failure 38% 35% 33% Operation 62% 65% % 100% % 100% - Other % Vegetation/Animal % Weather/Fire/Earthquake % 100% 100% MERRIT(12KV) - Customers: rd Party 48% 62% 36% % 98% Equipment Failure 39% 4% - 92% 68% 42% 2% 2% 25% 100% 100% % 100% - Operation % 0% - 0% 0% Other 13% 34% % % Vegetation/Animal % 3% 3% 11% Weather/Fire/Earthquake % 29% 22% MID VALLE(12KV) - Customers: 1, rd Party % 73% 67% % 28% 100% 31% 22% 100% Equipment Failure 100% 100% 100% 49% 26% - 100% 100% % 0% % 0% - Operation % 100% % 22% - Other % % 100% % 72% - 62% 57% - Vegetation/Animal Weather/Fire/Earthquake % 1% MILK(12KV) - Customers: 1, rd Party % 1% - 1% 1% 100% % 100% 100% % 49% 100% Equipment Failure 99% 98% 33% 92% 49% - 47% 90% Operation 1% 2% - 0% 1% - 52% 8% % 35% % 4% - Other % 65% - 100% 100% - 58% 47% - Vegetation/Animal % Weather/Fire/Earthquake % 49%

25 Reliability Histories for Individual Circuits Serving Tulare District 2-11 of st Qtr nd Qtr rd Qtr th Qtr SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI CircuitHistory11 SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI MONROE(12KV) - Customers: rd Party 98% 100% % 34% % 100% % 65% - Equipment Failure 1% 0% - 86% 96% 40% 29% 14% - 66% 31% % 14% - Operation 1% 0% % 34% - 17% 34% % 17% - Other % 13% 4% 60% Vegetation/Animal % 66% % 4% - Weather/Fire/Earthquake % 0% 0% 71% 86% NEWMAN(12KV) - Customers: rd Party % Equipment Failure 74% 98% 76% 20% 28% - 72% 91% 13% % 100% - 100% 100% % 5% - Operation % 1% - 2% 1% 13% 100% 100% % 100% - 45% 95% - Other 26% 2% 24% % 8% 41% Vegetation/Animal % Weather/Fire/Earthquake % 71% 100% NICKERSON(12KV) - Customers: rd Party % 21% 25% 69% 74% 100% % 100% 36% % 35% 14% 22% Equipment Failure 92% 50% - 44% 10% 61% 8% 9% - 100% 100% 50% % 1% % 27% 14% Operation 8% 50% - 1% 0% - 16% 5% % % Other % % % 100% - 24% 33% 14% Vegetation/Animal % % Weather/Fire/Earthquake % 69% 7% 6% 12% % 99% 100% % 34% 27% 20% NOAKES(12KV) - Customers: rd Party % 61% % 68% - 84% 50% - 86% 58% - Equipment Failure % 97% 50% 26% 39% % 32% 50% 16% 50% - 14% 42% 50% Operation 0% 0% Other 45% 50% 100% % % % Vegetation/Animal Weather/Fire/Earthquake 55% 50% - 6% 3%

26 Reliability Histories for Individual Circuits Serving Tulare District 2-12 of st Qtr nd Qtr rd Qtr th Qtr CircuitHistory12 SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI OAKLAND(12KV) - Customers: rd Party 74% 99% 82% 24% 42% % 96% 95% % % 94% 100% Equipment Failure 26% 1% 18% 1% 0% % % 100% - 0% 1% - Operation % 18% Other % 21% % Vegetation/Animal % Weather/Fire/Earthquake % 19% % 5% % 5% - OSNER(12KV) - Customers: 1, rd Party 6% 4% 9% Equipment Failure 92% 94% 83% % 100% 17% % 100% 29% 100% 100% 29% Operation 2% 2% % 100% - 0% 0% - 0% 0% - Other - - 9% % % % Vegetation/Animal % Weather/Fire/Earthquake PRATT(12KV) - Customers: rd Party % 99% 47% % 69% 100% 68% 50% % 61% 17% Equipment Failure 97% 97% 36% 89% 73% 100% Operation 3% 3% - 11% 27% - 1% 1% % 30% - 1% 0% 100% % 17% 83% Other % Vegetation/Animal % 0% 40% % 1% % 0% - Weather/Fire/Earthquake % % 50% % 21% - QUAIL(12KV) - Customers: rd Party 13% 1% 43% 47% 49% % 100% % 100% % 100% - Equipment Failure 19% 1% - 32% 48% 27% 100% 100% 100% % % Operation % 2% 15% % 0% 50% % 0% 50% Other 68% 98% 14% Vegetation/Animal % % Weather/Fire/Earthquake % 1% 30%

27 Reliability Histories for Individual Circuits Serving Tulare District 2-13 of st Qtr nd Qtr rd Qtr th Qtr SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI CircuitHistory13 SAIFI MAIFI SAIDI SAIFI MAIFI RADNOR(12KV) - Customers: 2, rd Party % 78% 77% 51% 47% 48% 33% 100% 100% 33% % 41% 5% Equipment Failure 97% 76% 38% 12% 18% 19% 11% 3% % 5% % 3% - Operation % 5% 11% 8% 3% 9% % 25% % 15% - Other 3% 24% 42% 0% 0% 19% 31% 46% 24% % 84% 70% % 68% 42% 95% Vegetation/Animal % Weather/Fire/Earthquake % 0% - 3% 0% 17% RICHGROVE(12KV) - Customers: rd Party % 72% 60% % 63% % 63% - Equipment Failure 63% 48% 44% 10% 3% - 84% 27% 16% Operation 37% 52% Other % 0% 2% 92% % % 37% 100% % 37% 100% Vegetation/Animal % 27% 5% 5% 2% Weather/Fire/Earthquake % 67% 3% RIECK(12KV) - Customers: rd Party Equipment Failure 15% 33% % 100% Operation 85% 67% - 15% 17% % 43% % 43% - Other % % % 57% % 57% - Vegetation/Animal % 50% Weather/Fire/Earthquake % 33% RINKER(12KV) - Customers: 1, rd Party % % 100% 100% % 100% 100% Equipment Failure % 100% 100% Operation 100% 100% Other Vegetation/Animal % Weather/Fire/Earthquake

28 Reliability Histories for Individual Circuits Serving Tulare District 2-14 of st Qtr nd Qtr rd Qtr th Qtr SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI CircuitHistory14 SAIFI MAIFI SAIDI SAIFI MAIFI SARGENT(12KV) - Customers: rd Party 32% 15% % % 98% % 49% - Equipment Failure 67% 84% 23% 95% 96% - 54% 2% 24% 100% 100% % 1% % 50% - Operation 0% 1% % 44% % 1% % 0% - Other % % 15% 53% 22% % 100% % % 1% 100% Vegetation/Animal % 0% 24% Weather/Fire/Earthquake % 4% SAUCELITO(12KV) - Customers: rd Party 53% 25% - 20% 20% 37% % 99% % 50% - Equipment Failure 34% 37% 24% 79% 77% 63% % 100% 26% 14% 32% 15% Operation % 2% - 54% 68% - 100% 100% % 18% - Other 12% 38% 76% % % % Vegetation/Animal Weather/Fire/Earthquake % 32% % 1% 100% % 0% 42% SCHENLEY(12KV) - Customers: rd Party 47% 51% 50% 100% 100% 18% 78% 88% - 100% 100% 100% % 4% 100% Equipment Failure 29% 24% % 13% 6% % 33% % 31% - Operation 1% 1% % 67% % 63% - Other % % 9% 5% 100% % 100% % 2% - Vegetation/Animal % Weather/Fire/Earthquake 23% 24% SERENITY(12KV) - Customers: 1, rd Party 12% 42% 14% % 52% 95% % 100% - 100% 100% % 100% - Equipment Failure 88% 58% 86% 9% 22% 36% 47% 32% 5% Operation % 0% - 36% 13% Other % 3% 36% % % Vegetation/Animal % 19% Weather/Fire/Earthquake % 57% 28% 2% 3%

29 Reliability Histories for Individual Circuits Serving Tulare District 2-15 of st Qtr nd Qtr rd Qtr th Qtr SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI CircuitHistory15 SAIFI MAIFI SAIDI SAIFI MAIFI SLADE(12KV) - Customers: rd Party Equipment Failure % 50% - 100% 100% Operation Other Vegetation/Animal Weather/Fire/Earthquake % 50% STEELMAN(12KV) - Customers: 1, rd Party 60% 50% 50% % 100% 100% 91% 99% - 22% 7% - 40% 54% 93% Equipment Failure 3% 1% - 89% 25% % 1% % 0% 0% 7% Operation % 75% - 100% 100% Other % 93% - 60% 46% - Vegetation/Animal 37% 50% 50% Weather/Fire/Earthquake STONE(12KV) - Customers: rd Party % 76% 12% 40% 50% 70% Equipment Failure 79% 94% - 0% 1% - 49% 47% Operation 18% 1% - 2% 20% Other 4% 5% 100% % 10% 3% 30% Vegetation/Animal % Weather/Fire/Earthquake % 3% 51% % 100% - 100% 100% - SUNSET(12KV) - Customers: rd Party % 100% Equipment Failure % 0% % 100% % 25% - Operation 6% 0% - 57% 6% Other 94% 100% - 8% 0% % 100% % 75% - Vegetation/Animal Weather/Fire/Earthquake % 93% 100%

30 Reliability Histories for Individual Circuits Serving Tulare District 2-16 of st Qtr nd Qtr rd Qtr 2017 CircuitHistory16 4th Qtr SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SURPRISE(12KV) - Customers: rd Party 74% 29% 8% 3% 3% - 87% 79% - 100% 100% % 94% % 72% - Equipment Failure 1% 0% - 36% 71% 27% 1% 13% 100% Operation 15% 3% 1% 6% 1% 1% 5% 4% % 5% 100% % 4% 33% Other 9% 68% 57% % 6% 4% % 1% - 100% 100% 100% 41% 24% 67% Vegetation/Animal % % Weather/Fire/Earthquake % 25% 18% SWANSON(12KV) - Customers: 1, rd Party % 28% % 7% - Equipment Failure 82% 92% 100% 10% 8% - 20% 37% 48% % 100% - 4% 1% % 57% - Operation 18% 8% - 11% 47% 30% % 66% % 72% % 30% - Other - - 0% 31% 24% 64% 52% 28% 4% 83% 34% % 21% 7% 100% Vegetation/Animal % Weather/Fire/Earthquake % 21% 6% 27% 35% 4% TAGUS(12KV) - Customers: rd Party 92% 99% 100% 42% 81% - 16% 28% 15% Equipment Failure 1% 0% % 11% 48% % 20% % 20% - Operation % 18% 36% 0% 0% % 80% % 80% - Other % 66% 61% 38% Vegetation/Animal % Weather/Fire/Earthquake 7% 0% - 5% 1% TLSMITH(12KV) - Customers: rd Party 100% 100% 48% % % 50% % 36% 100% 58% 43% 100% Equipment Failure 0% 0% - 2% 0% - 76% 62% % 49% % 1% - 14% 27% - Operation % 0% - 24% 38% - 100% 100% - 2% 0% % 3% - Other % 49% % % 100% - 42% 62% - 26% 27% - Vegetation/Animal % 0% 0% % Weather/Fire/Earthquake % 50%

31 Reliability Histories for Individual Circuits Serving Tulare District 2-17 of st Qtr nd Qtr rd Qtr th Qtr SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI CircuitHistory17 SAIFI MAIFI SAIDI SAIFI MAIFI VOSSLER(12KV) - Customers: rd Party 100% 99% 61% % 46% % 100% % 99% - Equipment Failure 0% 1% - 48% 96% 100% 70% 50% - 100% 100% % 1% - Operation % 2% - 3% 4% Other % Vegetation/Animal Weather/Fire/Earthquake % 3% WALLACE(12KV) - Customers: 1, rd Party % 27% 26% 0% 0% % 0% - Equipment Failure 46% 81% - 37% 50% - 0% 0% - 100% 100% - 83% 70% % 100% - Operation % 17% - 46% 23% 15% Other 54% 19% 100% % 41% 49% 42% % 30% % 0% 0% 100% Vegetation/Animal % Weather/Fire/Earthquake % 33% WELCH(12KV) - Customers: rd Party % 49% - 100% 100% % 100% 100% % 100% 4% Equipment Failure 100% 100% - 5% 0% % 100% % 0% - Operation Other % % % % Vegetation/Animal % 27% Weather/Fire/Earthquake % 23% WESTON(12KV) - Customers: rd Party 29% 3% 46% 4% 38% 37% % 100% % 96% - Equipment Failure 45% 54% 26% 84% 33% - 19% 1% - 100% 100% % 2% - Operation 26% 43% % 100% % 2% - Other % % 69% 91% 62% % % Vegetation/Animal % 8% 38% Weather/Fire/Earthquake % 29%