Circuit Reliability Review

Transcription

1 Circuit Reliability Review Huntington Beach 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 HUNTINGTON BEACH District CityList1 COSTA MESA FOUNTAIN VALLEY HUNTINGTON BEACH NEWPORT BEACH SEAL BEACH WESTMINSTER 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 Huntington Beach CircuitList1 There are 48 circuits that serve Huntington Beach 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers ABBOT(12KV) 1,949 POLK(12KV) 4, BEACH(12KV) 1,166 RAIDERS(12KV) 3, BISHOP(12KV) 1,294 RAMS(12KV) 1, BUSHARD(12KV) 2,708 RECOVERY 1(12KV) CALOL(12KV) 2,558 SAINTS(12KV) 3, CANOE(12KV) 3,154 SCORE(12KV) 4, CHARGERS(12KV) 3,207 SCOW(12KV) 4, CHEROKEE(12KV) 3,854 SEAWEED(12KV) 1, CHIPPEWA(12KV) 1,736 SEWELL(12KV) 4, CLAY(12KV) 3,705 SKIFF(12KV) CRONIN(12KV) 4,840 SMELTZER(12KV) 3, DARWIN(12KV) 851 SOCO 1(33KV) DINGY(12KV) 890 SPEAKER(12KV) DRIFTWOOD(12KV) 4,395 STANDARD(12KV) 3, FELLER(12KV) 1,578 TINKER(12KV) 2, FERREE(12KV) 1,815 WATERFIELD(12KV) 2, GEHRIG(12KV) 3,809 WINTERSBURG(12KV) 2, GIANTS(12KV) 1,220 YOGI(12KV) 3, GREENBAY(12KV) 1, HEIL(12KV) 1, HUMBLE(12KV) 2, JAZZ(12KV) 1, KETCH(12KV) 2, LAKERS(12KV) 1, LANGLEY(12KV) 2, LAUNCH(12KV) 2, LYELL(12KV) 1, MORRISON(12KV) 3, OILERS(12KV) 3, OUTRIGGER(12KV) 2, Grand Total 119,909 7

8 Reliability History of Circuits Serving Huntington Beach (No Exclusions) BarChart SAIDI (average minutes of sustained interruptions) Huntington Beach SAIFI (average frequency of sustained interruptions) MAIFI (average frequency of momentary interruptions) SCE SYSTEMWIDE ** 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 8

9 Causes of Repair Outages in Huntington Beach 2017 SAIDIChart Contributions to SAIDI by Outage Cause 3rd Party 5.3% Vegetation /Animal 2.4% 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 6.7% Operation 13.0% Weather /Fire /Earthquake 13.3% Equipment Failure 59.4% 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 Huntington Beach 2017 SAIFIChart 3rd Party 4.6% Contributions to SAIFI by Outage Cause Vegetation /Animal 1.1% 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 21.5% Weather /Fire /Earthquake 11.9% Operation 20.5% Equipment Failure 40.5% 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 Huntington Beach Updated through Dec 2017

14 Average Reliability of 48 Circuits Serving Huntington Beach 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 48 Circuits Serving Huntington Beach -- Total Customers: 119, rd Party 16% 20% 35% 6% 11% 23% 8% 9% 11% 4% 2% 26% 10% 14% 49% 2% 1% 8% 7% 2% 9% 5% 5% 22% Equipment Failure 54% 39% 30% 55% 42% 24% 44% 39% 33% 37% 14% 17% 82% 65% 45% 63% 54% 46% 82% 56% 18% 59% 40% 30% Operation 10% 15% 5% 8% 9% 15% 10% 11% 8% 14% 7% 12% 8% 21% - 21% 27% 8% 9% 41% 48% 13% 20% 19% Other 1% 3% 12% 19% 30% 21% 26% 24% 12% 15% 47% 27% - - 6% 3% 12% 32% - - 4% 7% 21% 17% Vegetation/Animal 5% 7% 8% 1% 1% 0% 2% 3% 20% % 5% 6% 0% 1% 15% 2% 1% 6% Weather/Fire/Earthquake 15% 16% 9% 12% 6% 17% 10% 14% 16% 31% 29% 18% % 0% 5% 13% 12% 6% 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 Huntington Beach - 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 ABBOT(12KV) - Customers: 1, CircuitHistory rd Party % % % Equipment Failure 100% 95% - 90% 37% 32% 99% 99% 60% % 68% 100% % 68% 100% Operation 0% 5% - 1% 5% - 1% 1% % 32% % 32% - Other % 57% Vegetation/Animal % BEACH(12KV) - Customers: 1, rd Party % 90% 100% Equipment Failure 40% 50% 100% 52% 5% - 21% 4% % 100% % 76% - Operation % 6% - 100% 100% % 4% 24% 100% Other % 95% 100% Weather/Fire/Earthquake 60% 50% BISHOP(12KV) - Customers: 1, rd Party % % Equipment Failure 100% 100% - 40% 4% - 100% 100% - 98% 70% % 70% - Operation % 30% % 2% 30% 50% Other % 96% BUSHARD(12KV) - Customers: 2, rd Party % 34% 39% 36% 49% Equipment Failure 98% 98% 100% 70% 32% 41% 0% 1% 50% % 100% - 68% 9% - 95% 59% - 93% 58% - Operation 2% 2% - 0% 0% - 3% 1% - 100% 100% % 91% - 5% 41% 100% 7% 42% 15% Other % 34% 20% % % % % Weather/Fire/Earthquake % 49%

16 Reliability Histories for Individual Circuits Serving Huntington Beach - 2 of 12 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 CALOL(12KV) - Customers: 2, Equipment Failure 100% 100% - 98% 99% % 6% - 100% 100% % 2% - 11% 5% - Operation % 1% 100% 0% 0% - 4% 6% % 98% - 54% 73% - Other % 88% % 23% - Weather/Fire/Earthquake % 100% CANOE(12KV) - Customers: 3, rd Party 94% 95% % 100% % 41% - Equipment Failure 6% 5% - 17% 61% 12% 18% 33% 25% % 16% % 8% - Operation % 2% 2% 39% 26% 5% 26% % 100% - 81% 84% 100% % 52% 100% Other % 32% Vegetation/Animal % 26% 25% Weather/Fire/Earthquake % 37% 49% 6% 3% 25% CHARGERS(12KV) - Customers: 3, rd Party % 11% 98% % 41% % 2% - Equipment Failure % 9% 2% 90% 73% 100% 54% 2% % 25% - 84% 5% 9% 53% 4% 9% Operation % 2% - 5% 11% % 35% - 16% 95% 91% 11% 20% 91% Other % 77% % 49% % 37% - Vegetation/Animal % 1% - 5% 15% Weather/Fire/Earthquake % 1% % 49% % 37% - CHEROKEE(12KV) - Customers: 3, rd Party 70% 93% % 30% % 71% 49% % 61% 22% Equipment Failure 27% 5% - 80% 39% - 18% 32% % 9% 51% % 100% - 54% 16% 23% Operation 3% 1% - 20% 61% 100% 23% 5% - 6% 19% 59% 7% 20% % 18% 32% Other % 33% 34% % % Vegetation/Animal % Weather/Fire/Earthquake % 94% 81% % 5% - 16

17 Reliability Histories for Individual Circuits Serving Huntington Beach - 3 of 12 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 CHIPPEWA(12KV) - Customers: 1, rd Party % 91% - 5% 2% % 100% - 7% 19% - Equipment Failure 47% 17% 100% 19% 5% - 35% 47% 24% 89% 67% 100% % 54% 100% Operation % 0% - 11% 33% % 27% - Other % 4% - 59% 51% 51% Vegetation/Animal 4% 2% % Weather/Fire/Earthquake 50% 80% CLAY(12KV) - Customers: 3, rd Party 3% 3% 26% % % Equipment Failure 71% 33% 26% 100% 100% - 3% 2% % 100% 100% 100% 100% 100% 100% 100% 66% Operation 14% 33% 24% % 98% 50% Other Vegetation/Animal 12% 30% 24% % CRONIN(12KV) - Customers: 4, rd Party 2% 0% 50% 98% 99% 61% Equipment Failure 35% 36% % 1% - 63% 62% % 89% - 50% 8% - Operation 57% 62% - 2% 1% - 0% 1% - 20% 31% % 11% - 14% 4% - Other % 82% 76% % 100% 100% % 87% 36% Vegetation/Animal 5% 2% 50% % 22% 100% % 0% % 0% - Weather/Fire/Earthquake % 7% 100% % 1% 64% DARWIN(12KV) - Customers: rd Party % Equipment Failure % 100% - 100% 100% % 77% - 61% 77% - Operation 100% 100% 51% % 100% - 38% 23% - 39% 23% - Other Vegetation/Animal % Weather/Fire/Earthquake %

18 Reliability Histories for Individual Circuits Serving Huntington Beach - 4 of 12 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 DINGY(12KV) - Customers: Equipment Failure 46% 48% 67% 93% 95% 100% 45% 6% Operation 10% 4% - 7% 5% Other % 94% Weather/Fire/Earthquake 45% 48% 33% % 100% % 100% - DRIFTWOOD(12KV) - Customers: 4, rd Party 27% 34% 100% Equipment Failure 62% 33% - 100% 100% 100% % 91% % 94% - 92% 92% - Operation 1% 1% % 100% 100% % 9% % 6% - 8% 8% - Other Weather/Fire/Earthquake 10% 32% FELLER(12KV) - Customers: 1, rd Party % Equipment Failure % 98% 17% % 56% - 100% 100% % 93% - Operation % 100% - 1% 2% - 100% 100% - 2% 44% % 100% - 4% 7% - Other 1% 1% % % Vegetation/Animal 2% 1% Weather/Fire/Earthquake 97% 98% 100% FERREE(12KV) - Customers: 1, rd Party % Equipment Failure % 100% % 100% % 93% - Operation 100% 100% - 100% 100% Other % Vegetation/Animal % % 100% 100% 6% 7% 100% 18

19 Reliability Histories for Individual Circuits Serving Huntington Beach - 5 of 12 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 GEHRIG(12KV) - Customers: 3, rd Party % Equipment Failure % 4% 1% - 88% 68% 57% 93% 48% % 63% - 88% 47% - Operation % 16% 29% 7% 53% - 100% 100% % 37% - 11% 48% - Other 100% 100% 50% % 100% % 6% - Vegetation/Animal % 1% Weather/Fire/Earthquake % 99% - 9% 15% 14% GIANTS(12KV) - Customers: 1, Equipment Failure % 100% % 100% 100% % 50% 50% Operation % 11% % % Other % 87% % 100% % 50% - Vegetation/Animal % 3% GREENBAY(12KV) - Customers: 1, Equipment Failure 99% 82% - 74% 67% % 100% % 100% - 86% 17% - Operation 1% 18% - 0% 0% 100% 100% 100% % % Other % 33% % 100% % 83% - HEIL(12KV) - Customers: 1, Equipment Failure % 96% % 58% 35% 86% 39% - 58% 49% 35% Operation % 61% - 3% 30% - Other % 100% Vegetation/Animal % 42% 65% % 21% 65% Weather/Fire/Earthquake % 4%

20 Reliability Histories for Individual Circuits Serving Huntington Beach - 6 of 12 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 HUMBLE(12KV) - Customers: 2, Equipment Failure 17% 15% - 94% 93% 57% 100% 100% % 100% 100% % 98% 100% Operation 22% 67% - 3% 5% % 100% - 3% 2% - Other Weather/Fire/Earthquake 61% 18% - 3% 3% 43% JAZZ(12KV) - Customers: 1, rd Party 6% 7% - 54% 42% 19% Equipment Failure % 1% % 100% 100% % 95% 100% 41% 47% 100% Operation 0% 1% - 1% 0% - 3% 1% % 5% - 1% 1% - Other 38% 37% 80% % 38% 49% - 100% 100% % 52% - Vegetation/Animal 56% 55% 20% 46% 57% 19% 44% 49% KETCH(12KV) - Customers: 2, rd Party % 4% 3% - 14% 19% Equipment Failure 67% 92% 50% 58% 65% 42% 39% 38% - 100% 100% % 86% - 100% 100% - 98% 93% - Operation 33% 8% - 2% 0% - 2% 3% % 14% % 7% - Other % 2% - 45% 40% 100% Vegetation/Animal % 0% Weather/Fire/Earthquake % 30% 58% LAKERS(12KV) - Customers: 1, rd Party 37% 19% 100% % % Equipment Failure 45% 20% - 92% 93% 100% 61% 7% % 71% 100% % 3% 66% Operation 19% 61% - 8% 7% - 6% 3% % 29% % 1% - Other % 90% - 100% 100% % 96% - 20

21 Reliability Histories for Individual Circuits Serving Huntington Beach - 7 of 12 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 LANGLEY(12KV) - Customers: 2, rd Party % Equipment Failure 73% 61% % 97% 34% % 100% - 92% 80% 60% 89% 77% 100% 76% 45% 46% Operation 27% 39% - 100% 100% - 23% 2% - 10% 2% % 0% - 11% 23% - 4% 2% - Other % 20% 40% % 10% 18% Vegetation/Animal % Weather/Fire/Earthquake % 2% 33% 90% 98% 100% % 42% 36% LAUNCH(12KV) - Customers: 2, rd Party % % 99% 100% 100% 100% 100% % 93% 82% Equipment Failure 50% 19% % 1% % 100% - 36% 7% - Operation 50% 81% 33% 100% 100% - 16% 1% - 10% 1% % 100% % 1% - Other % 99% % % Weather/Fire/Earthquake % LYELL(12KV) - Customers: 1, rd Party % % 24% 100% 0% 0% 45% Equipment Failure 100% 100% 55% 100% 100% - 86% 99% 50% % 84% - 93% 76% - 5% 5% - Operation % 51% 99% % 16% % 49% 11% Other % 1% % % Vegetation/Animal % Weather/Fire/Earthquake % 49% 1% % 46% 0% MORRISON(12KV) - Customers: 3, rd Party % % % Equipment Failure 89% 96% - 99% 98% 100% 28% 3% 1% 4% 2% - 96% 86% % 100% - 45% 55% - Operation 6% 2% - 1% 2% - 14% 40% % 14% % 0% - 1% 0% - Other Vegetation/Animal % Weather/Fire/Earthquake 5% 2% 33% % 58% - 96% 98% % 45% - 21

22 Reliability Histories for Individual Circuits Serving Huntington Beach - 8 of 12 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 OILERS(12KV) - Customers: 3, rd Party % 50% Equipment Failure 97% 95% - 8% 1% - 83% 90% % 100% - 100% 100% - 90% 9% - Operation 3% 5% - 1% 1% 100% 0% 1% % % Other % 49% % 100% % 91% - Weather/Fire/Earthquake % 9% OUTRIGGER(12KV) - Customers: 2, rd Party % % Equipment Failure 99% 92% 100% 17% 8% - 54% 26% 100% % 100% % 80% - Operation 1% 8% - 78% 91% 100% 16% 3% - 100% 100% - 100% 100% % 20% - Other % 70% Weather/Fire/Earthquake % 1% POLK(12KV) - Customers: 4, rd Party % Equipment Failure % 98% % 85% 100% 97% 93% 100% % 86% 100% Operation 100% 100% - 1% 2% - 100% 100% % 15% - 3% 7% % 14% - Other % RAIDERS(12KV) - Customers: 3, Equipment Failure 76% 14% - 9% 2% - 8% 2% % 100% % 0% - Operation 3% 27% - 1% 1% - 26% 90% % 100% 100% 6% 0% 100% Other % 89% % 100% % 99% - Vegetation/Animal 20% 59% Weather/Fire/Earthquake % 9% 100% 66% 8% 100%

23 Reliability Histories for Individual Circuits Serving Huntington Beach - 9 of 12 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 RAMS(12KV) - Customers: 1, rd Party 67% 69% 100% Equipment Failure % 52% 100% 90% 99% 100% Operation 32% 31% % 1% - 0% 0% % 100% % 26% 4% 50% Other % 48% % 100% % % 96% 50% Vegetation/Animal % 0% Weather/Fire/Earthquake 1% 0% RECOVERY 1(12KV) - Customers: Equipment Failure Operation Other % 100% SAINTS(12KV) - Customers: 3, Equipment Failure 99% 99% - 26% 2% - 68% 26% Operation % 5% - 32% 74% % 100% % 10% 1% 100% Other 1% 1% - 56% 93% 100% % 100% % 99% - SCORE(12KV) - Customers: 4, rd Party % 1% - 0% 0% % % Equipment Failure 14% 1% 50% 62% 73% - 30% 38% - 86% 48% % 3% % 3% - Operation 2% 1% - 29% 26% 2% 22% 7% 4% 14% 52% % 97% 100% 100% 100% - 84% 97% 9% Other % % % % % Vegetation/Animal 84% 98% Weather/Fire/Earthquake % 55% 44%

24 Reliability Histories for Individual Circuits Serving Huntington Beach - 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 SCOW(12KV) - Customers: 4, rd Party % 16% - 40% 5% 47% Equipment Failure 91% 49% - 93% 84% - 41% 49% 53% 100% 100% - 100% 100% 100% % 100% 47% Operation 9% 51% % 2% - 0% 0% % 0% - Other % 44% % % Vegetation/Animal % SEAWEED(12KV) - Customers: 1, rd Party % 8% % 73% - 55% 57% - Equipment Failure 10% 10% - 98% 90% - 82% 74% 0% 69% 6% - 100% 100% 100% % 4% 33% 23% 22% 35% Operation 83% 53% - 2% 10% - 16% 18% - 31% 94% % 3% 0% 0% 5% 0% Other Weather/Fire/Earthquake 7% 37% % % 20% 67% 22% 16% 65% SEWELL(12KV) - Customers: 4, rd Party 34% 80% 20% 7% 49% 36% % 94% 100% % 35% 74% Equipment Failure 66% 20% 80% 62% 27% 28% 1% 2% - 93% 73% 100% 20% 6% - 34% 7% - 88% 57% - 75% 44% 26% Operation 0% 0% - 0% 0% - 3% 1% - 7% 27% % 93% - 12% 43% - 8% 20% - Other % 24% 36% 96% 97% SKIFF(12KV) - Customers: Equipment Failure 100% 100% - 100% 100% - 89% 50% Operation Other % 50% Weather/Fire/Earthquake % 100% % 100% - 24

25 Reliability Histories for Individual Circuits Serving Huntington Beach - 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 SMELTZER(12KV) - Customers: 3, Equipment Failure 84% 95% 50% % 7% 60% % 100% - 92% 64% % 96% - Operation 14% 4% - 78% 51% 100% 2% 1% % 36% % 1% 4% 50% Other % 49% - 50% 7% % % Weather/Fire/Earthquake 2% 1% 50% % 85% 40% SOCO 1(33KV) - Customers: Equipment Failure Operation Other % 100% SPEAKER(12KV) - Customers: Equipment Failure Operation % 100% Other STANDARD(12KV) - Customers: 3, rd Party % 5% - 29% 2% % 26% 1% 20% Equipment Failure 11% 1% - 82% 67% 100% 96% 94% 100% 62% 94% 100% % 100% 100% 69% 10% - 63% 64% 52% Operation 89% 99% - 2% 0% - 1% 1% % 90% 17% 3% 34% 8% Other % 33% % 3% % 1% - Vegetation/Animal % % 25

26 Reliability Histories for Individual Circuits Serving Huntington Beach - 12 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 CircuitHistory12 SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI TINKER(12KV) - Customers: 2, rd Party 9% 2% Equipment Failure 22% 7% 100% 100% 100% - 16% 53% % 99% - 100% 100% 100% 100% 100% - 64% 67% 100% Operation 70% 92% % 1% % 0% - Other Weather/Fire/Earthquake % 47% 100% 100% 100% % 33% - WATERFIELD(12KV) - Customers: 2, rd Party % 57% 34% Equipment Failure 57% 55% 100% 100% 100% - 51% 42% 37% % 9% % 73% - 37% 17% - Operation % 1% 29% 100% 100% - 87% 91% % 27% - 63% 83% - Other Weather/Fire/Earthquake 43% 45% WINTERSBURG(12KV) - Customers: 2, rd Party % % % Equipment Failure % 58% 3% - 85% 87% % 100% % 100% - 100% 100% - Operation 100% 100% - 14% 43% - 15% 13% % % Other % 40% Vegetation/Animal % 1% Weather/Fire/Earthquake % 13% 50% YOGI(12KV) - Customers: 3, Equipment Failure 83% 61% - 23% 9% - 9% 4% - 100% 100% % 4% - Operation 17% 39% % 11% % 100% % 100% 22% 27% 96% 22% Other % 91% 100% 82% 85% Vegetation/Animal % % 26