Circuit Reliability Review

Transcription

1 Circuit Reliability Review San Bernardino 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 REDLANDS District CityList1 BANNING BEAUMONT BOX SPRINGS MOUNTAIN CALIMESA CHERRY VALLEY COLTON GRAND TERRACE HIGHGROVE HIGHLAND LOMA LINDA MENTONE MUSCOY REDLANDS RIALTO RIVERSIDE YUCAIPA CITY OF SAN BERNARDINO SAN MANUEL BAND OF MISSION 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 San Bernardino District 2 CircuitList1 There are 80 circuits that serve San Bernardino District 2 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers ACOSTA(12KV) 1,054 FIELDS(12KV) 575 ROWCO(12KV) 1,228 - ALLVIEW(2.4KV) 298 GREEN BEAR(2.4KV) 682 SAMPRAS(12KV) 90 - ALPINE(2.4KV) 696 GRILLEY(12KV) 1,310 SANBER(12KV) 2,965 - AMETHYST(12KV) 1,519 HEAPS PEAK(33KV) 6 SEELEY(2.4KV) BAMBOO(12KV) 386 HIGH SCHOOL(2.4KV) 315 SELLERS(12KV) 2,218 - BELUSHI(12KV) 1,185 HOOK CREEK(2.4KV) 304 SKYLAND(2.4KV) BENNY(12KV) 16 HOPE(12KV) 963 SNOW VALLEY(12K BIANCO(12KV) 1,639 ICE HOUSE(2.4KV) 11 SPEEDWAY(12KV) BIG RIGG(12KV) 1,674 JEEP(12KV) 2,051 SQUINT(12KV) 1,209 - BLUE CUT(12KV) 284 JOB(2.4KV) 349 TAGGERT(12KV) BROOKINGS(4.16KV) 1 KAISER(12KV) 1,192 TETLEY(12KV) CABLE(12KV) 2,035 KIMBERLY(2.4KV) 51 TOKAY(12KV) 2,377 - CALABASH(12KV) 81 KUFFEL(2.4KV) 571 TORONTO(12KV) CALSTATE(12KV) 546 LA GRANDE(12KV) 1,629 TRACTOR(12KV) CAMP BALDY(2.4KV) 163 LURING(2.4KV) 367 TULLY(12KV) 1,055 - CASMALIA(12KV) 2,342 MANNING(12KV) 1,278 TWIN PEAKS(33KV 2 - CATAWBA(12KV) 1,074 MARBLE(12KV) 346 VALLEY OF THE M CEDAR GLEN(12KV) 928 MARX(12KV) 1,426 VERDEMONT(33KV 10 - CEDAR PINES(2.4KV) 293 MERRIL(4.16KV) 722 WAHLSTROM(12K 2,403 - CHILLON(2.4KV) 561 MONTREAL(12KV) 1,067 ZIMMER(12KV) 1,089 - CITROW(12KV) 739 MORA(12KV) 1, COTTAGE GROVE(2.4KV) 423 MORITZ(12KV) 2, COULTER(2.4KV) 2 NORTH BAY(2.4KV) CRAM(12KV) 1,307 NORTH SHORE(12KV) 1, CRESTLINE(2.4KV) 771 NORTHPARK(12KV) 2, DALBA(2.4KV) 616 OAK KNOLL(2.4KV) DANGERFIELD(12KV) 1,491 PRYOR(12KV) 2, DIXON(12KV) 1,397 RANGER(2.4KV) FANO(12KV) 1,303 REDWOOD(12KV) 1, FERRARA(12KV) 1,780 RIM(12KV) 1, Grand Total 77,071 7

8 Reliability History of Circuits Serving San Bernardino District 2 (No Exclusions) BarChart SAIDI (average minutes of sustained interruptions) San Bernardino District SCE SYSTEMWIDE SAIFI (average frequency of sustained interruptions) ** Exclusions are days which utilities are allowed to MAIFI (average frequency of momentary interruptions) 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 0.0 8

9 Causes of Repair Outages in San Bernardino District SAIDIChart Contributions to SAIDI by Outage Cause 3rd Party 5.1% 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 Weather /Fire /Earthquake 46.6% Other 12.4% Equipment Failure 27.8% Operation 8.0% 3rd Party Equipment Failure Operation Other Vegetation /Animal Weather /Fire /Earthquake Vegetation /Animal 0.1% SAIDI = the cumulative amount of time the average customer is interrupted by sustained outages each year. 9

10 Causes of Repair Outages in San Bernardino District SAIFIChart Contributions to SAIFI by Outage Cause Vegetation /Animal 0.1% 3rd Party 6.4% 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 Weather /Fire /Earthquake 23.0% Other 15.7% Operation 28.3% Equipment Failure 26.4% 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

11 11

12 12

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

14 Average Reliability of 80 Circuits Serving San Bernardino 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 80 Circuits Serving San Bernardino District 2 -- Total Customers: 77, rd Party 16% 11% 8% 8% 6% 5% 5% 11% 18% 3% 6% 3% 27% 16% 54% 9% 9% 17% 2% 0% 8% 5% 6% 19% Equipment Failure 29% 32% 6% 34% 44% 19% 25% 30% 8% 21% 13% 26% 46% 48% 18% 43% 31% 0% 54% 37% 25% 28% 26% 21% Operation 6% 12% 5% 12% 15% 3% 10% 15% 0% 7% 38% 1% 13% 19% - 19% 30% 7% 9% 14% 5% 8% 28% 2% Other 19% 15% 55% 21% 23% 63% 8% 16% 58% 12% 13% 51% 13% 17% 16% 15% 26% 45% 14% 14% 18% 12% 16% 36% Vegetation/Animal 3% 3% 8% 1% 1% 3% 0% 3% 4% 0% 0% - 0% 0% 12% 1% 0% 2% 0% 0% 9% 0% 0% 5% Weather/Fire/Earthquake 26% 26% 18% 24% 11% 7% 52% 25% 13% 57% 30% 19% 1% 1% 0% 13% 3% 29% 21% 35% 36% 47% 23% 18% 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 San Bernardino District 2-1 of 20 SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI ACOSTA(12KV) - Customers: 1, CircuitHistory rd Party % 100% % 72% - Equipment Failure 24% 48% % 76% - 95% 24% 100% % 4% - 42% 2% 100% Operation 1% 2% - 100% 100% - 3% 23% - 5% 76% % 5% - 3% 4% - Other 8% 3% 1% % 13% 1% 100% % 91% - 13% 22% - Vegetation/Animal % Weather/Fire/Earthquake 67% 48% 47% ALLVIEW(2.4KV) - Customers: rd Party - - 9% % 6% 17% % % Equipment Failure 57% 50% - 10% 40% 29% 64% 56% 17% % 100% 100% 75% % 4% 25% 39% Operation % % 40% % 25% - Other % 22% 40% 53% % 7% 20% 75% % 93% % 25% 46% Weather/Fire/Earthquake 43% 50% 64% 68% 20% - 34% 37% 17% 91% 41% 13% % 7% % 26% 8% ALPINE(2.4KV) - Customers: rd Party % 29% 12% % % Equipment Failure % 71% 29% 14% 29% - 75% 19% 24% % 99% % 37% 18% Operation % 5% - 3% 41% % 1% % 25% - Other % 30% 14% 71% 1% 12% 70% % % Weather/Fire/Earthquake % 14% - 71% 26% 18% 22% 41% 17% % 100% 100% 49% 38% 25% AMETHYST(12KV) - Customers: 1, rd Party Equipment Failure 81% 76% 50% % 100% - 66% 54% - 100% 100% - 90% 73% - Operation % 85% % 34% % 20% - Other 0% 0% % % 12% % 7% - Vegetation/Animal % % 100% 100% % % Weather/Fire/Earthquake 19% 24% 1% 17% 15%

16 Reliability Histories for Individual Circuits Serving San Bernardino District 2-2 of 20 CircuitHistory 2 SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI BAMBOO(12KV) - Customers: rd Party 1% 1% % % 90% 50% % 90% 25% Equipment Failure % 100% 100% 7% 1% % 1% % 1% - Operation 6% 4% Other % 99% 77% % % % Weather/Fire/Earthquake 93% 95% % 10% 50% % 10% 25% BELUSHI(12KV) - Customers: 1, rd Party % 100% % 92% - Equipment Failure % 100% Operation 70% 79% - 100% 100% % 100% 100% % 8% 100% Other % Vegetation/Animal 30% 21% 100% BENNY(12KV) - Customers: rd Party Equipment Failure % 100% Operation % 100% % 100% - Other BIANCO(12KV) - Customers: 1, rd Party Equipment Failure 69% 2% - 64% 69% 100% % 100% % 71% - Operation 3% 1% 100% 36% 31% % 100% - 21% 29% - Other 28% 98%

17 Reliability Histories for Individual Circuits Serving San Bernardino District 2-3 of 20 CircuitHistory 3 SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI BIG RIGG(12KV) - Customers: 1, rd Party 51% 73% % 100% 100% % 88% 100% Equipment Failure 46% 25% - 8% 4% % 1% - 0% 0% - Operation 1% 1% - 1% 1% % 0% % 0% - Other 1% 0% - 8% 4% - 100% 100% 100% 100% 100% % 79% - 59% 11% - Weather/Fire/Earthquake 0% 0% 100% 83% 90% % 20% - 18% 2% - BLUE CUT(12KV) - Customers: ##### rd Party 54% 26% 2% 10% 13% 15% 2% 25% 38% % 100% - 39% 49% % 25% - Equipment Failure % 56% 34% 19% 3% 39% 22% 26% 57% 38% 9% 0% % 50% 100% 53% 33% 42% Operation % 0% - 1% 11% - 0% 0% 4% % 0% 3% Other 46% 74% 67% 28% 39% 48% 3% 10% 39% % % 4% 50% - 2% 13% 55% Vegetation/Animal % 14% Weather/Fire/Earthquake % 0% 18% 92% 15% - 73% 43% % 51% % 28% - BROOKINGS(4.16KV) - Customers: rd Party % % % Equipment Failure 77% 33% - 40% 50% - 26% 80% % % 100% 100% 45% 25% 67% Operation % 50% % 25% - Other % 60% 50% 100% % % 100% % 25% - Weather/Fire/Earthquake 23% 67% % 20% 20% 73% 50% 33% % 25% 17% CABLE(12KV) - Customers: 2, rd Party % Equipment Failure 100% 100% - 98% 96% - 57% 94% 100% % 100% % 100% - 73% 4% - Operation % 2% 0% 41% 5% % 100% % 0% - Other % 100% % 96% - Vegetation/Animal % 1% - 1% 2% % % % 17

18 Reliability Histories for Individual Circuits Serving San Bernardino District 2-4 of 20 CircuitHistory 4 SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI CALABASH(12KV) - Customers: rd Party % 100% Equipment Failure 100% 100% % Operation Other % CALSTATE(12KV) - Customers: rd Party % 2% - 0% 3% Equipment Failure 100% 100% - 44% 97% - 76% 45% - 100% 100% % 18% - 89% 98% - Operation % 51% Other % % % Weather/Fire/Earthquake % 2% 64% % 82% - 11% 2% - CAMP BALDY(2.4KV) - Customers: rd Party 45% 17% 25% 62% 33% Equipment Failure % 67% 100% 11% 33% Operation 17% 35% % 33% Other % % % 100% - 100% 100% 100% 23% 35% 17% Vegetation/Animal 39% 48% Weather/Fire/Earthquake % 34% - 100% 100% 100% % 65% 83% CASMALIA(12KV) - Customers: 2, rd Party % 30% % % Equipment Failure 92% 54% - 16% 35% 100% % 100% 27% % 99% 21% Operation 7% 46% % 100% Other % % 100% 100% - 0% 1% 11% Vegetation/Animal % % Weather/Fire/Earthquake 1% 0% 42% 22% 35%

19 Reliability Histories for Individual Circuits Serving San Bernardino District 2-5 of 20 CircuitHistory 5 SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI CATAWBA(12KV) - Customers: 1, rd Party % 4% Equipment Failure 23% 8% - 93% 95% - 100% 100% Operation 77% 92% - 1% 1% % 100% % 1% - Other Weather/Fire/Earthquake % 100% 100% 76% 99% 100% CEDAR GLEN(12KV) - Customers: rd Party 19% 37% % % % Equipment Failure % 23% % 29% 24% 100% 100% 66% 84% 99% - 71% 76% 5% 85% 74% 28% Operation 81% 63% % 18% - 4% 57% % 5% - 3% 16% - Other % % 38% 38% 73% % % Weather/Fire/Earthquake % 77% 10% 59% 44% 10% 4% 14% 19% % 1% 100% 26% 19% 95% 12% 10% 39% CEDAR PINES(2.4KV) - Customers: rd Party % % % Equipment Failure % 33% % % 100% 33% 27% 25% 43% Operation % 35% % 26% - Other % 95% 67% 100% 5% 25% 80% 83% 33% % 61% 25% 29% Weather/Fire/Earthquake 100% 100% % 75% - 12% 33% % 25% - CHILLON(2.4KV) - Customers: rd Party % % % Equipment Failure 42% 51% - 49% 30% 8% % 100% 100% % 2% 50% Operation 2% 2% - 7% 22% % 100% % 98% - Other % 35% 38% 75% 100% 100% 75% Weather/Fire/Earthquake 55% 47% - 9% 10% 17%

20 Reliability Histories for Individual Circuits Serving San Bernardino District 2-6 of 20 CircuitHistory 6 SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI CITROW(12KV) - Customers: rd Party % 44% % % % Equipment Failure % 11% % 1% - 3% 1% - Operation 100% 100% - 49% 56% - 90% 89% % 100% % 0% - Other % % Weather/Fire/Earthquake % 99% - 96% 99% - COTTAGE GROVE(2.4KV) - Customers: rd Party % % % Equipment Failure % 33% % 100% 100% 67% 53% 93% % 59% 25% Operation % 1% % 100% % 7% % 21% - Other % % 22% 83% 83% % % Weather/Fire/Earthquake % 66% - 78% 17% % % 100% 100% 38% 20% 33% COULTER(2.4KV) - Customers: rd Party % 17% - 4% 17% 33% % % % Equipment Failure 40% 60% 50% 49% 50% 17% % % % % Operation % 33% - 1% 25% % 50% % 25% - Other % 45% 33% 83% % % 100% 100% 67% 25% 50% % 38% 60% Weather/Fire/Earthquake 60% 40% % 50% 17% 99% 75% 14% % 38% 7% CRAM(12KV) - Customers: 1, rd Party Equipment Failure 100% 100% 0% 100% 100% 100% 85% 81% - 100% 100% 100% % 73% 100% Operation % 19% % 100% - 100% 100% - 6% 27% - Other % 0% 100% - - 0% % Vegetation/Animal %

21 Reliability Histories for Individual Circuits Serving San Bernardino District 2-7 of 20 CircuitHistory 7 SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI CRESTLINE(2.4KV) - Customers: rd Party % % % Equipment Failure 2% 1% - 9% 28% - 4% 4% - 13% 1% 49% 100% 100% % 2% 33% Operation 0% 1% - 31% 32% - 0% 28% - 15% 81% % 80% - Other 77% 77% 85% 33% 39% 73% % % % Weather/Fire/Earthquake 21% 21% 15% 28% 1% 27% 96% 68% 2% 72% 18% 5% % 18% 3% DALBA(2.4KV) - Customers: rd Party 21% 10% % % % Equipment Failure 12% 30% - 25% 43% 18% 13% 31% % % % % Operation 0% 0% % 31% % 25% - Other % 75% 57% 82% 11% 5% 67% 1% 9% 84% % 100% % 24% 56% Weather/Fire/Earthquake 67% 60% 73% % 64% 17% 97% 60% % 50% - DANGERFIELD(12KV) - Customers: 1, rd Party % 100% % 100% - Equipment Failure 18% 2% % 100% 100% Operation Other 82% 98% DIXON(12KV) - Customers: 1, rd Party 100% 100% 84% 42% 65% 1% Equipment Failure % 35% 99% 100% 97% 50% % 100% - 100% 100% - 49% 2% - Operation % 0% 0% - 0% 3% % 100% % 98% - Other % Vegetation/Animal %

22 Reliability Histories for Individual Circuits Serving San Bernardino District 2-8 of 20 CircuitHistory 8 SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI FANO(12KV) - Customers: 1, rd Party 17% 17% 30% % 50% % 37% - 54% 23% - Equipment Failure 5% 1% % 3% - 30% 50% % 23% - Operation 7% 27% 17% 80% 60% - 74% 87% % 78% - 2% 3% - 12% 41% - Other 13% 27% % 9% 100% Vegetation/Animal 1% 1% - 8% 8% % 3% - 29% 60% 100% 3% 3% 22% Weather/Fire/Earthquake 57% 27% 53% 12% 32% 100% % 19% 100% % 10% 78% FERRARA(12KV) - Customers: 1, rd Party 23% 4% 53% 64% 45% Equipment Failure 35% 42% - 32% 30% 100% % 100% 100% % 9% 5% Operation 13% 16% 37% 4% 26% - 62% 76% Other % % 0% 56% % 100% 100% 58% 91% 95% Vegetation/Animal 29% 38% - 0% 0% Weather/Fire/Earthquake % 24% 44% FIELDS(12KV) - Customers: rd Party % Equipment Failure Operation 100% 100% - 100% 100% Other GREEN BEAR(2.4KV) - Customers: rd Party % 20% - 4% 20% 34% % % Equipment Failure 40% 60% 38% 50% 40% % % % % Operation % 39% - 4% 29% % 17% - Other % 45% 40% 100% 22% 4% 50% % 100% 100% 67% 100% 100% % 42% 64% Weather/Fire/Earthquake 60% 40% % 38% 17% 96% 71% 14% % 42% 7% 22

23 Reliability Histories for Individual Circuits Serving San Bernardino District 2-9 of 20 CircuitHistory 9 SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI GRILLEY(12KV) - Customers: 1, rd Party Equipment Failure 100% 100% % 50% - 96% 50% % 50% - Operation % 50% % 50% - Other Vegetation/Animal % 7% 50% HEAPS PEAK(33KV) - Customers: rd Party % % % Equipment Failure % 23% % % Operation % 15% 5% % 50% % 32% - Other 100% 100% 100% 32% 62% 95% 100% 100% 91% 100% 50% 78% % 86% % 63% 49% Weather/Fire/Earthquake % 14% 100% % 5% 23% HIGH SCHOOL(2.4KV) - Customers: rd Party % % % Equipment Failure % 50% - 55% 25% 1% % % 99% % 50% 20% Operation % 20% - 100% 100% % 1% % 50% - Other % 53% 50% 100% 30% 52% 75% % % Vegetation/Animal % Weather/Fire/Earthquake % 0% - 12% 3% HOOK CREEK(2.4KV) - Customers: rd Party % % % Equipment Failure 77% 33% - 77% 50% - 9% 26% % % 5% - 100% 100% 100% 3% 26% 67% Operation % 25% - 3% 25% - 0% 50% % 25% - Other % 3% 25% 100% % % 95% % 25% - Weather/Fire/Earthquake 23% 67% % 49% 18% 100% 50% 33% % 25% 17% 23

24 Reliability Histories for Individual Circuits Serving San Bernardino 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 HOPE(12KV) - Customers: rd Party Equipment Failure Operation 100% 100% Other ICE HOUSE(2.4KV) - Customers: rd Party 66% 25% 33% 9% 24% Equipment Failure % 76% 100% Operation 24% 50% % 100% - 100% 100% % 52% - Other % % % 100% 100% 1% 48% 100% Vegetation/Animal 10% 25% JEEP(12KV) - Customers: 2, rd Party % % % Equipment Failure 75% 45% - 74% 65% 15% 66% 53% 13% % % 83% % 0% 14% Operation 25% 55% % 20% - 9% 62% - 100% 100% - 2% 17% % 51% - Other % 26% 35% 85% 13% 18% 62% 75% 31% 35% % 64% 24% 34% Vegetation/Animal % Weather/Fire/Earthquake % 9% - 16% 7% 47% % 100% - 18% 25% 38% JOB(2.4KV) - Customers: rd Party % % % Equipment Failure 3% 1% - 16% 25% % % 100% - 100% 100% - 43% 21% 27% Operation 3% 2% - 7% 27% - 93% 50% 16% 53% 68% 48% % 0% - 26% 51% 25% Other % 29% 24% 100% 2% 24% 67% 25% 16% % 12% 12% 23% Vegetation/Animal % 1% Weather/Fire/Earthquake 94% 97% - 47% 23% - 2% 24% - 22% 16% - 100% 100% 12% % 16% 3% 24

25 Reliability Histories for Individual Circuits Serving San Bernardino District 2-11 of 20 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 KAISER(12KV) - Customers: 1, rd Party Equipment Failure % 81% 79% Operation % 100% - 19% 21% % 100% % 100% - Other % KIMBERLY(2.4KV) - Customers: rd Party % Equipment Failure 100% 100% - 100% 100% 33% 27% 50% % 100% % 100% - Operation Other % % % % % Vegetation/Animal % Weather/Fire/Earthquake % 50% KUFFEL(2.4KV) - Customers: rd Party % % % Equipment Failure % 58% - 57% 33% % 100% 100% 67% 86% 97% - 99% 99% 25% 17% 68% 31% Operation 100% 100% - 36% 21% - 1% 19% - 100% 100% % 3% - 1% 1% - 83% 32% - Other % % 1% 17% 71% % % Weather/Fire/Earthquake % 21% - 41% 31% 14% % % % % LA GRANDE(12KV) - Customers: 1, rd Party % 95% 100% % 1% - 26% 35% 19% Equipment Failure 98% 99% 32% 67% 49% 100% 13% 5% - 35% 5% % 100% % 7% - Operation 0% 0% - 31% 51% - 82% 91% % 65% % 0% 1% 40% Other % 2% 0% % % 99% - 42% 57% 40% Vegetation/Animal 2% 1% % 4% % 35% % 1% - 25

26 Reliability Histories for Individual Circuits Serving San Bernardino District 2-12 of 20 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 LURING(2.4KV) - Customers: rd Party % % % Equipment Failure 56% 49% - 26% 43% 19% 19% 50% % % % % Operation % 25% % 100% - 3% 33% - Other % 74% 57% 81% % 4% 25% 83% % 100% % 33% 55% Weather/Fire/Earthquake 44% 51% 70% % 50% 20% 96% 50% % 33% - MANNING(12KV) - Customers: 1, rd Party % 33% 15% Equipment Failure 26% 7% 11% % 34% 33% 51% % 83% % 100% - 89% 95% - Operation 74% 93% 89% % 0% - 100% 100% - 3% 17% % 5% - Other % % % Vegetation/Animal % Weather/Fire/Earthquake % 33% MARBLE(12KV) - Customers: rd Party % 47% - 91% 78% Equipment Failure % 47% - 9% 22% 100% % 100% 50% % 88% 50% Operation % 6% % 100% - 9% 13% - Other % % MARX(12KV) - Customers: 1, rd Party Equipment Failure Operation % 100% % 100% % 100% - Other

27 Reliability Histories for Individual Circuits Serving San Bernardino District 2-13 of 20 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 MERRIL(4.16KV) - Customers: rd Party % 47% 50% % 99% % 24% - Equipment Failure 100% 100% - 2% 1% - 4% 2% % 40% 100% 31% 16% 36% Operation % 99% - 17% 52% % 1% - 16% 70% % 25% - Other % % % 30% 100% 44% 60% - 38% 35% 64% Vegetation/Animal % MONTREAL(12KV) - Customers: 1, rd Party % % % Equipment Failure 48% 35% - 85% 75% - 2% 0% - 14% 19% 26% % 100% - 27% 31% 19% Operation % 31% % 2% % 19% - Other 36% 28% 100% 15% 25% 100% % 80% 19% 55% % 98% 100% % 31% 54% Weather/Fire/Earthquake 15% 37% % 100% 14% 4% 31% 18% % 19% 13% MORA(12KV) - Customers: 1, rd Party % 5% 100% 56% 49% 47% % 48% 100% % 48% 100% Equipment Failure 11% 27% % % 50% % 50% - Operation 89% 73% - 88% 90% - 44% 51% % 2% % 2% - Other - - 5% Vegetation/Animal % 1% 0% % Weather/Fire/Earthquake % 5% MORITZ(12KV) - Customers: 2, rd Party 37% 33% 17% % 18% 18% % % Equipment Failure % 16% 0% 14% 4% % % Operation 0% 1% - 7% 27% - 6% 2% - 100% 100% % 100% % 98% - Other 14% 33% 83% 46% 32% 76% 36% 69% 57% Vegetation/Animal % Weather/Fire/Earthquake 48% 33% - 43% 24% 19% 20% 7% 25% % 100% - 30% 2% - 27

28 Reliability Histories for Individual Circuits Serving San Bernardino District 2-14 of 20 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 NORTH BAY(2.4KV) - Customers: rd Party % % % Equipment Failure 81% 56% - 50% 67% % % 100% - 76% 25% 25% Operation % 51% % 25% - Other % 50% 33% 100% % % 100% 100% % 25% 25% Weather/Fire/Earthquake 19% 44% % 100% 20% 72% 49% 49% % 25% 25% NORTH SHORE(12KV) - Customers: 1, rd Party % % % Equipment Failure % 28% - 8% 17% 2% % % 100% % 50% 17% Operation % 1% - 10% 20% - 100% 100% - 100% 100% % 50% - Other 100% 100% 100% 92% 71% 100% 83% 63% 72% % % % Vegetation/Animal % 0% % NORTHPARK(12KV) - Customers: 2, rd Party % 27% 59% 42% % 100% % 0% - Equipment Failure 2% 1% - 10% 55% - 19% 2% - 99% 100% % 2% - 33% 43% - Operation 11% 14% - 0% 0% - 25% 17% - 1% 0% 4% 100% 100% % 3% 3% Other 87% 85% 100% 23% 14% 13% % % 73% 61% - 46% 33% 97% Weather/Fire/Earthquake % 31% 78% 29% 22% 58% % 37% - 16% 20% - OAK KNOLL(2.4KV) - Customers: rd Party % % % Equipment Failure 28% 24% - 39% 50% % % % Operation 49% 50% 40% % 25% % 20% - Other % 61% 50% 100% % 12% 25% 80% % 100% % 40% 57% Weather/Fire/Earthquake 22% 25% % 100% 16% 87% 50% % 40% - 28

29 Reliability Histories for Individual Circuits Serving San Bernardino District 2-15 of 20 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 PRYOR(12KV) - Customers: 2, rd Party Equipment Failure % Operation Other RANGER(2.4KV) - Customers: rd Party % % % Equipment Failure % 33% - 67% 17% - 98% 57% 33% 100% 100% 67% 74% 99% % 65% 31% Operation 1% 2% - 40% 33% - 3% 17% - 0% 21% % 4% - 1% 12% - Other % % 8% 33% 82% % % Weather/Fire/Earthquake 99% 98% - 55% 34% 40% 22% 33% - 1% 21% 17% % 1% - 33% 96% 100% 2% 23% 38% REDWOOD(12KV) - Customers: 1, rd Party 33% 44% % % 100% 100% % % 9% 97% Equipment Failure 67% 56% 2% % % 50% 0% 66% 49% 88% 55% 45% 2% Operation % 100% % 50% 0% 34% 51% 12% 26% 45% 1% Other % % % 100% % 1% - RIM(12KV) - Customers: 1, rd Party % 22% 16% % % Equipment Failure 25% 38% - 79% 91% 7% 54% 41% 14% % % 100% % 34% 16% Operation 1% 14% - 3% 1% - 0% 0% - 8% 53% % 100% - 7% 35% - Other 74% 48% 90% % 24% 36% 66% 32% 21% 66% % % 29% 13% 60% Vegetation/Animal % % Weather/Fire/Earthquake % 8% 10% 1% 0% 5% 60% 26% 12% % 17% 9% 29

30 Reliability Histories for Individual Circuits Serving San Bernardino District 2-16 of 20 CircuitHistory16 SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI ROWCO(12KV) - Customers: 1, rd Party - - 7% % 0% 15% % % Equipment Failure 28% 49% - 32% 43% 27% 20% 50% 11% 1% 0% 13% 53% 89% 67% % 13% 21% 34% Operation 1% 0% - 0% 0% 14% 0% 1% - 2% 25% - 47% 11% - 5% 1% - 100% 100% - 13% 18% - Other % 22% 45% 58% % 12% 25% 74% % 99% % 30% 49% Weather/Fire/Earthquake 71% 51% 65% 46% 12% 2% 80% 49% 15% 85% 50% 13% % 30% 9% SAMPRAS(12KV) - Customers: rd Party % 100% 100% % 100% % 100% - Equipment Failure Operation Other Weather/Fire/Earthquake % % SANBER(12KV) - Customers: 2, rd Party 42% 47% 74% % 2% 11% % % Equipment Failure 39% 19% - 89% 96% 70% 83% 59% - 100% 100% - 79% 63% - 27% 24% % 4% - Operation 18% 34% 26% 1% 2% 30% 1% 5% % 37% - 73% 76% 100% % 1% 12% Other % 0% - 5% 16% 33% % % Vegetation/Animal % 16% 11% Weather/Fire/Earthquake % 1% % % 100% 50% 53% 95% 18% SEELEY(2.4KV) - Customers: rd Party % % % Equipment Failure % 50% % % Operation % 1% - 100% 100% - 100% 100% % 100% - 62% 82% - Other % 70% 50% 100% % % 100% % 18% - 30

31 Reliability Histories for Individual Circuits Serving San Bernardino District 2-17 of 20 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 SELLERS(12KV) - Customers: 2, rd Party Equipment Failure % 75% Operation % 25% % 100% % 100% - Other SKYLAND(2.4KV) - Customers: rd Party % % % % Equipment Failure % 30% % % % Operation 100% 100% % 66% % 100% % 57% - Other % 31% 40% 60% 91% 98% 78% % % Weather/Fire/Earthquake % 30% 20% 9% 2% - 99% 34% 20% % 100% - 99% 43% 13% SNOW VALLEY(12KV) - Customers: rd Party % 25% - 2% 15% 23% % 30% 1% 100% % 0% 7% Equipment Failure 49% 59% 38% 47% 38% 0% 0% 0% - 1% 2% 15% 1% 5% 17% % 1% 3% 22% Operation % 0% - 2% 20% - 1% 25% % 3% % 14% - Other % 27% 37% 100% % 6% 0% 69% 99% 95% 67% 59% 96% - 17% 40% - 13% 42% 63% Weather/Fire/Earthquake 51% 41% % 65% 15% 92% 73% 16% % 60% - 85% 41% 8% SPEEDWAY(12KV) - Customers: rd Party 96% 95% Equipment Failure 4% 5% % 51% 2% Operation % 100% 50% 0% 2% 12% Other % % % % 100% 100% % 0% 2% 25% Weather/Fire/Earthquake % 49% 25% 100% 100% 100% % 96% 63% 31

32 Reliability Histories for Individual Circuits Serving San Bernardino District 2-18 of 20 SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI CircuitHistory18 SAIFI MAIFI SAIDI SAIFI MAIFI SQUINT(12KV) - Customers: 1, rd Party % 36% 27% % % Equipment Failure % 50% % 0% 21% % 0% 15% Operation 1% 1% % 2% 13% 28% 65% % 100% % 65% - Other % 72% 50% 100% 9% 32% 60% % % Weather/Fire/Earthquake 99% 99% % 30% - 69% 35% 79% % 35% 56% TAGGERT(12KV) - Customers: rd Party % % 100% 100% % 0% 14% Equipment Failure 30% 26% - 38% 38% % 0% 20% % 0% 0% 29% Operation 47% 48% 38% 9% 24% - 0% 2% - 1% 25% % 20% - Other % 53% 38% 100% % 12% 24% 80% % 100% % 39% 57% Weather/Fire/Earthquake 23% 26% % 98% 14% 88% 51% % 40% - TETLEY(12KV) - Customers: rd Party 2% 0% % % % Equipment Failure % 42% 1% % 51% 12% % 100% 53% 48% 27% 52% Operation % 1% 2% 0% 7% - 4% 33% - 49% 88% % 25% - Other % 64% 57% 97% 2% 21% 82% 76% 33% % 38% 24% 25% Weather/Fire/Earthquake 98% 100% 17% % 72% - 20% 33% % 24% - TOKAY(12KV) - Customers: 2, rd Party % 40% 33% % Equipment Failure 45% 33% 50% 77% 56% 33% 86% 61% % 0% % 100% - 73% 57% - Operation 55% 67% - 18% 3% % 100% - 100% 100% % 43% - Other % % % % % Vegetation/Animal % 39%

33 Reliability Histories for Individual Circuits Serving San Bernardino District 2-19 of 20 SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI CircuitHistory19 SAIFI MAIFI SAIDI SAIFI MAIFI TORONTO(12KV) - Customers: rd Party % % % Equipment Failure 71% 33% - 42% 49% - 62% 14% - 7% 2% 68% % 99% 100% 37% 35% 54% Operation 1% 1% - 0% 0% - 8% 40% - 2% 33% % 1% - 2% 22% - Other % 36% 45% 100% % 29% 2% % % 1% 16% Weather/Fire/Earthquake 28% 66% - 21% 6% - 30% 46% 20% 62% 63% 32% % 42% 15% TRACTOR(12KV) - Customers: rd Party % % % Equipment Failure % 100% % 100% - 84% 68% - Operation % 100% % 100% % 32% - Other TULLY(12KV) - Customers: 1, rd Party 63% 57% 44% % 92% - 100% 100% 100% % 75% 43% Equipment Failure % 3% % 63% % 15% - Operation 33% 41% 13% % 33% % 7% - Other % % % % % Vegetation/Animal 3% 2% - 100% 100% 5% % 5% % 4% 11% % 3% 6% TWIN PEAKS(33KV) - Customers: rd Party % % % Equipment Failure 34% 37% - 0% 5% - 6% 33% % % Operation 59% 26% - 10% 5% - 94% 67% - 100% 100% % 50% - Other 8% 37% 100% 87% 85% 93% % % % Weather/Fire/Earthquake % 5% 7% % 100% - 88% 50% - 33