Circuit Reliability Review

Transcription

1 Circuit Reliability Review Hemet 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 MENIFEE District CityList1 BOX SPRINGS MOUNTAIN EAST HEMET GOOD HOPE HEMET HOMELAND IDYLLWILD-PINE COVE JUNIPER FLATS LAKEVIEW MARCH AFB MEADOWBROOK MENIFEE MORENO VALLEY MOUNTAIN CENTER NUEVO PERRIS RIVERSIDE SAN JACINTO VALLE VISTA WINCHESTER WOODCREST SOBOBA BAND OF LUISENO INDIANS 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 Hemet CircuitList1 There are 43 circuits that serve Hemet 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers ACADIAN(12KV) 1,499 MELVERE(12KV) AGUANGA(12KV) 1,210 MINOR(12KV) 1, AVENGER(12KV) 1,469 PACHEA(12KV) 2, AVIATOR(12KV) 1,772 PREDATOR(12KV) 1, BEECHCRAFT(12KV) 499 RESORT(33KV) BIPLANE(12KV) 1,525 ROTEC(12KV) 1, BISSELL(12KV) 1,175 SAVORY(12KV) 1, CALLAND(12KV) 1,222 SONOMA(12KV) 1, CAMBRIDGE(12KV) 1,840 SOPWITH(12KV) CANAL(33KV) 4 SPITFIRE(12KV) CESSNA(12KV) 1,117 STANFORD(12KV) 1, CHARLTON(12KV) 2,172 ZIPPY(12KV) 2, CORSAIR(12KV) 1,836 ROS(12KV) 2, DARTMOUTH(12KV) 1, DEEGAN(12KV) 1, EASTER(12KV) 1, ERIN(12KV) 1, FRUITVALE(12KV) 1, GIRARD(12KV) 1, GLIDER(12KV) 1, GREEN ACRES(12KV) 1, HEMACINTO(12KV) 1, HEWITT(12KV) KADICE(12KV) 1, KIRBY(12KV) 1, LAUDA(33KV) LEAR(12KV) 2, LINDBERG(12KV) 1, LOCKNER(12KV) 1, MASSACRE(12KV) 1, Grand Total 61,171 7

8 Reliability History of Circuits Serving Hemet (No Exclusions) BarChart SAIDI (average minutes of sustained interruptions) Hemet SAIFI (average frequency of sustained interruptions) SCE SYSTEMWIDE MAIFI (average frequency of momentary interruptions) ** Exclusions are days which utilities are allowed to remove from their metrics because the outages on those days were caused by acts of nature. **Data is as of 02/20/2018, data can be slightly different due to outage data validation process 8

9 Causes of Repair Outages in Hemet 2017 SAIDIChart Contributions to SAIDI by Outage Cause Vegetation /Animal 1.3% 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 Other Weather /Fire /Earthquake 11.8% Operation 25.0% 3rd Party 14.6% Equipment Failure 34.5% 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 Hemet 2017 SAIFIChart Contributions to SAIFI by Outage Cause Vegetation /Animal 2.9% 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 Other 17.0% Weather /Fire /Earthquake 13.9% Operation 28.4% 3rd Party 16.2% Equipment Failure 21.7% 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 Hemet Updated through Dec 2017

14 Average Reliability of 43 Circuits Serving Hemet 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 43 Circuits Serving Hemet -- Total Customers: 61, rd Party 7% 10% 14% 15% 21% 15% 11% 15% 18% 0% 0% 0% 27% 47% 38% 8% 12% 13% 23% 17% 59% 15% 16% 32% Equipment Failure 28% 30% 15% 41% 32% 7% 15% 18% 16% 58% 47% 20% 40% 17% 20% 48% 27% 11% 11% 9% 5% 35% 22% 13% Operation 3% 6% 14% 32% 24% 5% 71% 57% 47% 27% 15% 15% 29% 16% 26% 39% 51% 20% 16% 27% 0% 25% 28% 13% Other 20% 27% 27% 6% 6% 49% 0% 0% 9% 3% 11% 41% 4% 20% 16% 1% 10% 23% 27% 23% 27% 13% 17% 26% Vegetation/Animal 0% 0% 5% 1% 8% - 1% 2% 4% 5% 14% 0% 0% 0% 0% 1% 0% 7% 0% 0% - 1% 3% 2% Weather/Fire/Earthquake 42% 27% 25% 4% 10% 24% 2% 7% 5% 6% 14% 23% % 1% 26% 23% 25% 9% 12% 14% 14% 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 Hemet - 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 ACADIAN(12KV) - Customers: 1, CircuitHistory rd Party % 95% Equipment Failure 4% 1% - 20% 5% - 1% 0% Operation % 100% 100% % 62% 67% 100% 100% 100% 97% 82% 67% Other 3% 33% Vegetation/Animal % 38% 33% % 18% 33% Weather/Fire/Earthquake 94% 66% AGUANGA(12KV) - Customers: 1, rd Party 69% 97% 26% Equipment Failure 27% 2% 0% % 6% 86% % 100% % 100% - Operation % 57% Other 5% 1% 74% Vegetation/Animal % 37% 14% AVENGER(12KV) - Customers: 1, rd Party % 76% 59% 64% % % Equipment Failure 100% 100% - 99% 97% % 100% - 100% 100% % 100% - Operation % 3% 1% 21% 40% 8% % % Other % % Vegetation/Animal % 1% Weather/Fire/Earthquake % AVIATOR(12KV) - Customers: 1, rd Party 2% 10% 17% % % 41% % 26% 100% 12% 26% 50% Equipment Failure 3% 11% 3% 2% 0% - 46% 18% Operation 1% 3% - 35% 50% - 54% 82% 7% % 59% - 100% 100% % 8% - Other 94% 77% 80% 25% 39% 42% % 0% 100% 48% 32% - 44% 28% 50% Weather/Fire/Earthquake % 11% 58% % 42% - 36% 37% - 15

16 Reliability Histories for Individual Circuits Serving Hemet - 2 of 11 CircuitHistory st Qtr nd Qtr rd Qtr th Qtr 2017 SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI 2017 BEECHCRAFT(12KV) - Customers: rd Party % 98% 67% % % Equipment Failure 100% 100% Operation % 2% - 100% 100% - 100% 100% % 100% - Other % BIPLANE(12KV) - Customers: 1, rd Party % % Equipment Failure 99% 99% 100% 12% 34% 52% Operation 1% 1% - 51% 34% % 100% % 2% - Other % % 100% % % 98% 50% Weather/Fire/Earthquake % 32% BISSELL(12KV) - Customers: 1, rd Party Equipment Failure % 41% - 84% 16% Operation 100% 100% 100% 22% 59% - 16% 84% 100% Other CALLAND(12KV) - Customers: 1, rd Party Equipment Failure 1% 2% - 45% 66% - 45% 4% 67% % 100% % 2% - Operation 0% 0% - 15% 16% - 55% 96% Other 8% 45% 55% Vegetation/Animal % Weather/Fire/Earthquake 91% 53% 45% 40% 19% % 100% 100% 76% 98% 100% 16

17 Reliability Histories for Individual Circuits Serving Hemet - 3 of 11 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 CAMBRIDGE(12KV) - Customers: 1, rd Party % 1% % 1% - Equipment Failure 8% 4% - 79% 45% - 0% 0% % 61% - 98% 97% 100% % 92% 45% Operation % 15% - 100% 100% 66% % 37% 100% 1% 2% % 7% 55% Other 2% 48% % Vegetation/Animal % 2% % 0% - Weather/Fire/Earthquake 90% 48% 100% 20% 40% 100% CANAL(33KV) - Customers: rd Party % Equipment Failure % 33% - 100% 100% % 100% % 50% - Operation % 100% - 13% 50% - Other 100% 100% 67% 30% 67% % % % Weather/Fire/Earthquake % CESSNA(12KV) - Customers: 1, rd Party % 100% % % Equipment Failure Operation % 100% % 100% % 100% - Other % CHARLTON(12KV) - Customers: 2, rd Party Equipment Failure 81% 50% 19% 100% 98% - 6% 12% % 4% % 2% - Operation 0% 1% - 0% 2% - 94% 88% 100% 100% 100% % 96% 100% % 56% 100% Other 11% 49% Vegetation/Animal 8% 0% 81% Weather/Fire/Earthquake % 100% - 53% 43% - 17

18 Reliability Histories for Individual Circuits Serving Hemet - 4 of 11 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 CORSAIR(12KV) - Customers: 1, rd Party % % % % Equipment Failure 86% 92% 28% 97% 92% - 84% 96% 100% 100% 100% 100% % 4% - 41% 7% - 50% 22% 7% Operation 3% 3% - 1% 2% - 1% 0% % 96% - 3% 9% - 8% 9% - Other 10% 5% 28% 2% 6% 57% % % 83% 50% 41% 69% 42% Weather/Fire/Earthquake 0% 0% 44% % 4% DARTMOUTH(12KV) - Customers: 1, rd Party 57% 35% 67% % 100% - 68% 32% - Equipment Failure 3% 0% % 5% % 2% % 0% - Operation 5% 12% - 8% 47% - 88% 95% 100% 0% 0% 100% 96% 98% 13% % % 5% 54% Other 33% 52% 33% 72% 7% 100% % 100% % 100% 100% % 63% 46% Vegetation/Animal % 0% % 0% - Weather/Fire/Earthquake 2% 0% - 21% 46% DEEGAN(12KV) - Customers: 1, rd Party 18% 1% 86% % Equipment Failure 74% 61% - 100% 100% - 20% 9% Operation 8% 38% 14% % 91% 25% Other EASTER(12KV) - Customers: 1, rd Party % 49% - 61% 50% 48% Equipment Failure 0% 0% % 4% % 100% % 50% - 22% 28% - Operation 0% 1% 33% 16% 50% - 6% 46% 48% % 100% - 42% 50% - 78% 72% - Other % % % % % Vegetation/Animal 0% 0% - 3% 1% % % % Weather/Fire/Earthquake 100% 99%

19 Reliability Histories for Individual Circuits Serving Hemet - 5 of 11 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 ERIN(12KV) - Customers: 1, rd Party % 97% 100% 1% 2% % 100% 100% 92% 99% 100% % 86% 52% Equipment Failure % 1% - 0% 1% % 1% % 1% - Operation % 0% - 98% 95% 100% % 95% - 8% 13% - Other 28% 58% - 5% 2% % % 5% - 2% 1% 48% Vegetation/Animal % 2% - 100% 100% % 0% - Weather/Fire/Earthquake 72% 42% 100% FRUITVALE(12KV) - Customers: 1, rd Party % 36% Equipment Failure 97% 54% % 0% - 40% 7% % 3% - Operation 3% 46% 100% 90% 64% - 97% 100% 100% % 100% 100% 100% 100% - 72% 52% 100% Other % Vegetation/Animal % 93% % 45% - GIRARD(12KV) - Customers: 1, rd Party 84% 98% % 30% - 42% 30% - Equipment Failure % 12% - 51% 26% - 100% 100% % 70% 100% 58% 69% 100% Operation 1% 1% 100% 84% 43% % % 100% % 1% - Other 16% 1% % Weather/Fire/Earthquake % 45% - 49% 74% 42% GLIDER(12KV) - Customers: 1, rd Party % % Equipment Failure % 100% % 100% - 71% 61% % 32% - Operation 100% 100% - 100% 100% % 0% 100% % 39% % 5% 50% Other % Weather/Fire/Earthquake % 100% % 63% - 19

20 Reliability Histories for Individual Circuits Serving Hemet - 6 of 11 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 GREEN ACRES(12KV) - Customers: 1, rd Party % 3% 16% 100% 100% - 100% 100% 100% % 78% 33% Equipment Failure 38% 59% 24% 100% 100% 100% 1% 0% 54% % 51% % 11% - Operation 0% 0% % 72% 15% % 49% % 11% - Other 0% 0% 12% % % Vegetation/Animal % 25% 15% Weather/Fire/Earthquake 62% 41% 64% % % HEMACINTO(12KV) - Customers: 1, rd Party Equipment Failure % 100% - 1% 0% - 94% 90% 100% 2% 1% % 62% 100% Operation % 100% 100% 6% 10% - 98% 99% - 100% 100% % 38% - Other 4% 50% Weather/Fire/Earthquake 96% 50% % HEWITT(12KV) - Customers: rd Party Equipment Failure % 50% - 91% 50% - Operation % % 50% - 9% 50% - Other KADICE(12KV) - Customers: 1, rd Party Equipment Failure 91% 49% 37% 100% 100% - 7% 4% Operation 3% 2% % 96% 100% Other 6% 49% 32% % Weather/Fire/Earthquake 0% 0% 32% %

21 Reliability Histories for Individual Circuits Serving Hemet - 7 of 11 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 KIRBY(12KV) - Customers: 1, rd Party 65% 37% % 63% 56% % % Equipment Failure 3% 0% - 33% 18% 0% 32% 19% 20% % 100% 28% % 99% 11% Operation % 10% 3% 41% 2% 18% 7% 100% 100% % % 0% 30% Other % 57% 79% 16% % Weather/Fire/Earthquake 33% 63% 34% % % 100% 100% - 0% 1% 29% LAUDA(33KV) - Customers: rd Party % 3% 17% 25% % % Equipment Failure % % 50% 50% % 100% 100% 95% 50% 100% 64% 60% 60% Operation % 100% Other 100% 100% 75% % 17% 25% 100% 100% % 50% - 36% 40% - Vegetation/Animal % 17% % % LEAR(12KV) - Customers: 2, rd Party % 93% 50% % 8% 79% 50% Equipment Failure 92% 83% - 96% 81% - 88% 87% % 7% 50% 10% 27% % 10% 25% Operation 8% 17% - 4% 19% - 12% 13% % 53% % 8% - Other % Weather/Fire/Earthquake % 20% 100% % 3% 24% LINDBERG(12KV) - Customers: 1, rd Party % % Equipment Failure 28% 2% - 81% 45% 9% 58% 11% - 100% 100% 13% % 80% 3% Operation 10% 2% % 100% - 100% 100% - 100% 100% - 40% 20% - Other % 19% 55% 91% % % % Weather/Fire/Earthquake 62% 95% % 89% 100%

22 Reliability Histories for Individual Circuits Serving Hemet - 8 of 11 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 LOCKNER(12KV) - Customers: 1, rd Party 2% 1% 24% % 1% Equipment Failure % 98% - 76% 59% Operation 19% 62% 17% 1% 1% - 9% 41% 24% 100% 100% % 53% - Other % 0% % % 100% - 52% 47% - Vegetation/Animal % 0% Weather/Fire/Earthquake 79% 37% 59% 1% 1% 100% MASSACRE(12KV) - Customers: 1, rd Party % 64% 22% % 1% % 1% - Equipment Failure 84% 40% 50% 6% 20% 78% % 99% % 96% - Operation 10% 19% 25% 73% 16% - 99% 100% 50% 1% 0% % 100% - 8% 4% - Other 0% 0% % Weather/Fire/Earthquake 7% 41% 25% % 0% MELVERE(12KV) - Customers: rd Party 6% 3% Equipment Failure % Operation % 99% Other 94% 97% 100% % % % Vegetation/Animal % 1% 34% Weather/Fire/Earthquake % 100% 24% % 100% - 100% 100% - MINOR(12KV) - Customers: 1, rd Party 100% 100% Equipment Failure % 50% - 66% 25% - 100% 100% % 92% 50% 100% Operation % 38% 50% - 34% 75% 100% % 97% - 2% 49% - Other Weather/Fire/Earthquake % 3% - 6% 2% - 22

23 Reliability Histories for Individual Circuits Serving Hemet - 9 of 11 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 PACHEA(12KV) - Customers: 2, rd Party % 100% % 0% - Equipment Failure 49% 10% - 27% 33% % 100% % 0% - 6% 1% - Operation 0% 0% - 73% 67% - 100% 100% 100% % 100% - 78% 98% - 74% 97% - Other 29% 84% % 2% 100% 20% 2% 33% Weather/Fire/Earthquake 22% 6% % % % PREDATOR(12KV) - Customers: 1, rd Party % % 100% % 89% % 44% 85% 50% Equipment Failure % 100% 100% % 100% - 17% 5% - Operation % 0% Other % % % Vegetation/Animal % 11% % 11% - Weather/Fire/Earthquake 100% 100% 100% RESORT(33KV) - Customers: rd Party % 35% 54% % 17% 100% % 3% 50% Equipment Failure 94% 37% 33% 100% 100% - 6% 8% 46% % 57% 83% % 15% 50% Operation % 23% % 100% - 24% 59% - 30% 61% - Other 1% 32% 50% % 11% % 41% - 59% 21% - Weather/Fire/Earthquake 5% 32% 17% % 23% ROS(12KV) - Customers: 2, rd Party % 84% % 32% - Equipment Failure 21% 9% - 7% 0% - 46% 47% % 96% 100% % 60% 100% Operation 79% 91% - 52% 9% - 54% 53% % 16% - 100% 100% - 19% 6% - Other % % 4% % 2% - Vegetation/Animal % 91%

24 Reliability Histories for Individual Circuits Serving Hemet - 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 ROTEC(12KV) - Customers: 1, rd Party % % Equipment Failure 2% 1% 47% 75% 49% - 25% 6% Operation 0% 0% - 25% 51% 17% 9% 3% - 100% 100% - 100% 100% - 100% 100% % 5% - Other 98% 99% % % % 100% - 85% 95% 53% Vegetation/Animal % Weather/Fire/Earthquake % 91% SAVORY(12KV) - Customers: 1, rd Party 8% 14% 48% % 78% 8% Equipment Failure % 2% - 5% 6% 6% % 33% 100% % 6% 100% Operation 29% 46% 49% 92% 97% 100% 22% 16% 86% 100% 100% % 67% - 5% 15% - 11% 33% - Other 63% 40% % 69% - 73% 50% - Vegetation/Animal - - 3% 1% 1% % 15% - 10% 11% - SONOMA(12KV) - Customers: 1, rd Party 20% 30% - 56% 12% 100% 26% 66% % 100% 100% % 100% - 57% 92% 73% Equipment Failure 80% 69% - 27% 44% - 30% 12% 49% % 13% - 1% 0% - 4% 1% - Operation 0% 0% - 0% 1% - 45% 22% 51% 100% 100% - 2% 0% - 92% 87% 100% % 7% 27% Other Vegetation/Animal % 43% SOPWITH(12KV) - Customers: rd Party % % % Equipment Failure % 50% % 100% % 2% - Operation % 50% % 100% % 98% - Other %

25 Reliability Histories for Individual Circuits Serving Hemet - 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 SPITFIRE(12KV) - Customers: rd Party 100% 100% 50% 2% 1% 49% % % % Equipment Failure % 52% 2% 61% 92% 47% Operation % 47% - 39% 8% - 100% 100% - 100% 100% % 100% - Other % % % % STANFORD(12KV) - Customers: 1, rd Party 61% 40% 58% 65% 87% 100% Equipment Failure % 100% % 100% - Operation 13% 4% - 35% 13% - 100% 100% 100% Other 24% 55% Vegetation/Animal 2% 0% 42% Weather/Fire/Earthquake % % ZIPPY(12KV) - Customers: 2, rd Party % % Equipment Failure 48% 51% 100% 99% 55% - 100% 100% % 5% - 100% 100% - 45% 9% - Operation 1% 3% - 1% 45% 3% 0% 0% 100% % 95% % 91% - Other % Weather/Fire/Earthquake 51% 47%