Circuit Reliability Review

Transcription

1 Circuit Reliability Review Ventura 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 VENTURA District CityList1 CAMARILLO CHANNEL ISLANDS BEACH EL RIO FILLMORE MEINERS OAKS MIRA MONTE OAK VIEW OJAI OXNARD PORT HUENEME SANTA PAULA VENTURA 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 Ventura District 2 CircuitList1 There are 41 circuits that serve Ventura District 2 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers ACADEMY(16KV) 668 RAMAC(16KV) AMBERCREST(16KV) 1,822 REDSTONE(16KV) 1, BELPAC(16KV) 2,793 ROSA(16KV) 4, BORCHARD(16KV) 1,324 SEMINARY(16KV) 1, BRENNAN(16KV) 2,494 SHERWOOD(4.16KV) BUFFER(16KV) 1,062 SIDEWINDER(16KV) 2, BYER(16KV) 2,105 SIENNA(16KV) CASPER(4.16KV) 15 TIROS(16KV) 1, CLEMSON(16KV) 1,824 VANGUARD(16KV) CONIFER(16KV) 3,217 WOODHAVEN(16KV) 1, COVENTRY(16KV) 1,169 ZONE(16KV) CRESTHAVEN(16KV) 1, CRUMNER(16KV) 1, DOLPHIN(4.16KV) DONLON(16KV) ESTABAN(16KV) 2, EVITA(16KV) 2, FLYNN(16KV) 1, GALAHAD(16KV) 2, GREENHOUSE(16KV) HOOLIGAN(16KV) 3, INTREPID(16KV) 3, JANSS(16KV) 3, KANAN(16KV) 2, LINDERO(16KV) 1, MAGUIRE(16KV) MORGANSTEIN(16KV) 2, PANCHO(16KV) 1, PATRIOT(16KV) 2, RAINBOW(16KV) Grand Total 69,229 7

8 Reliability History of Circuits Serving Ventura District 2 (No Exclusions) BarChart SAIDI (average minutes of sustained interruptions) Ventura District SCE SYSTEMWIDE SAIFI (average frequency of sustained interruptions) 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 Ventura District SAIDIChart Contributions to SAIDI by Outage Cause 3rd Party 2.7% 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 31.2% Other 39.9% Equipment Failure 21.6% Operation 2.8% 3rd Party Equipment Failure Operation Other Vegetation /Animal Weather /Fire /Earthquake Vegetation /Animal 1.8% SAIDI = the cumulative amount of time the average customer is interrupted by sustained outages each year. 9

10 Causes of Repair Outages in Ventura 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 4.7% Weather /Fire /Earthquake 11.0% Other 46.0% 3rd Party 5.8% Equipment Failure 29.1% Operation 3.4% 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

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

14 Average Reliability of 41 Circuits Serving Ventura 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 39 Circuits Serving Ventura District 3 -- Total Customers: 68, rd Party 11% 18% 3% 4% 4% 11% 12% 20% 9% 3% 3% 0% 2% 2% 37% 22% 37% 23% 1% 1% 4% 3% 6% 12% Equipment Failure 55% 42% 28% 67% 61% 35% 50% 48% 20% 38% 53% 45% 85% 83% 9% 70% 52% 36% 5% 8% 2% 22% 29% 21% Operation 17% 19% 12% 6% 5% 1% 12% 11% 5% 1% 3% 10% 10% 12% 1% 6% 10% - 2% 1% 6% 3% 3% 5% Other 4% 8% 42% 9% 13% 40% 15% 12% 29% 3% 1% 35% 1% 2% 11% 2% 1% 8% 60% 77% 62% 40% 46% 36% Vegetation/Animal 1% 1% 11% 4% 8% 5% 0% 0% 27% 1% 12% - 0% 0% 24% 0% 0% 33% 2% 4% 22% 2% 5% 19% Weather/Fire/Earthquake 12% 12% 4% 9% 8% 8% 10% 9% 9% 54% 27% 9% 2% 1% 19% 0% 0% - 30% 9% 4% 31% 11% 7% 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 Ventura 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 ANGUS(16KV) - Customers: 1, CircuitHistory rd Party % 28% 27% 21% Equipment Failure 59% 52% % 27% 21% % 100% 100% % 100% - 74% 92% 0% Operation 31% 41% - 97% 88% 33% 1% 1% 1% Other % % 46% 56% 59% 45% 100% % % 4% 36% Vegetation/Animal % 12% % % % Weather/Fire/Earthquake 9% 6% % 55% % 4% - ANTON(16KV) - Customers: rd Party % 30% 7% % 100% 100% % 14% 2% Equipment Failure 77% 62% - 10% 4% 0% 83% 85% 27% % % 5% - 1% 2% 29% Operation % 2% - 2% 3% Other 23% 38% - 3% 2% 55% 13% 10% 41% 79% 86% % 31% 37% 5% Vegetation/Animal % 1% 20% % % 100% 52% % 1% 1% 61% Weather/Fire/Earthquake % 63% 17% 2% 2% 11% 21% 14% 100% % 95% - 41% 47% 3% ARNEILL(16KV) - Customers: 1, rd Party % 0% Equipment Failure % 75% - 100% 100% % 30% - 4% 29% - Operation 100% 100% - 8% 25% % 100% - 100% 100% % 1% - Other % 70% 100% 94% 69% 100% Vegetation/Animal Weather/Fire/Earthquake % 0% % 0% - 1% 0% - ATMORE(16KV) - Customers: 2, rd Party 7% 1% 47% 2% 2% 50% % 25% % 0% - Equipment Failure % 96% % 100% 65% % 13% 50% Operation 93% 99% 53% 17% 2% - 6% 4% % 75% - 100% 100% % 2% - Other % 64% 60% 33% % % 95% 100% 31% 80% 50% Vegetation/Animal % Weather/Fire/Earthquake % 36% % 5% - 12% 4% - 15

16 Reliability Histories for Individual Circuits Serving Ventura District 2-2 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 BALCOM(16KV) - Customers: 1, rd Party % 55% 79% Equipment Failure 31% 18% 0% 29% 6% 14% 52% 40% 30% % 100% % 34% - Operation 11% 2% - 6% 7% - 16% 6% - 100% 100% % 100% - 48% 66% - Other % 12% 30% 7% % % % % Vegetation/Animal 4% 1% - 3% 2% % % % Weather/Fire/Earthquake 54% 80% - 3% 1% - 32% 54% 33% % % BARRINGTON(16KV) - Customers: rd Party % 98% - 4% 0% Equipment Failure 59% 39% % 88% 27% % 1% % 1% - Operation 7% 9% - 1% 0% - 5% 1% % 96% - 22% 33% - 58% 79% - Other 34% 51% 100% 0% 0% - 0% 0% 54% % % % 67% - 13% 4% 50% Vegetation/Animal % 1% 100% % 0% 1% 50% Weather/Fire/Earthquake % 1% - 12% 10% 19% 100% 100% % 3% % 16% - BEARDSLEY(16KV) - Customers: rd Party 89% 89% % 1% 100% Equipment Failure 1% 0% - 94% 99% - 1% 0% % 100% 100% % 16% 50% Operation 10% 11% - 1% 1% - 81% 90% Other % 0% 0% - 3% 1% % 100% 100% 91% 84% 50% Vegetation/Animal % 8% Weather/Fire/Earthquake % 0% BELPAC(16KV) - Customers: 2, rd Party 62% 46% Equipment Failure 30% 23% % 100% 100% 35% 100% 100% 68% % 42% % 96% 68% Operation 8% 31% % 0% 32% % 58% % 4% - Other % % % % % Vegetation/Animal Weather/Fire/Earthquake

17 Reliability Histories for Individual Circuits Serving Ventura District 2-3 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 BROOME(16KV) - Customers: 1, rd Party % 54% - 29% 10% - 30% 13% - Equipment Failure Operation % 46% - 7% 10% - 21% 12% - Other % 81% 100% 49% 74% 100% Vegetation/Animal Weather/Fire/Earthquake BUCKHORN(16KV) - Customers: 2, rd Party 2% 2% - 1% 0% 51% Equipment Failure 98% 97% - 8% 2% - 29% 46% % 97% - 47% 12% % 83% - Operation 0% 1% - 1% 1% - 2% 4% % 86% % 14% - Other % 0% 0% 2% % % % 5% 1% 7% - - 7% 0% 0% 38% Vegetation/Animal % 3% % % % Weather/Fire/Earthquake - - 3% 90% 97% 47% 65% 46% % 3% % 3% - CADWAY(16KV) - Customers: 3, rd Party % 3% 100% % % 0% 20% 1% 0% 17% Equipment Failure 66% 29% 10% 40% 40% - 54% 85% % 1% % 3% - 7% 3% - Operation 0% 1% - 45% 52% - 46% 15% % 0% - 2% 0% - Other 2% 2% 81% % 95% 99% % 91% 80% 82% 91% 83% Vegetation/Animal 3% 3% - 6% 4% % Weather/Fire/Earthquake 29% 65% 10% 1% 0% % 6% - 8% 5% - CASTRO(16KV) - Customers: 2, rd Party 11% 32% % 100% % % 5% 5% Equipment Failure 2% 1% - 95% 80% 7% 43% 24% 7% % 0% - 100% 100% 91% 0% 0% - 2% 4% 48% Operation 28% 20% % 73% % 2% - 10% 2% - Other % % 11% 1% % 46% 100% 1% 42% 48% Vegetation/Animal % 11% % Weather/Fire/Earthquake 59% 47% - 3% 9% - 18% 2% 0% % 52% - 86% 47% - 17

18 Reliability Histories for Individual Circuits Serving Ventura District 2-4 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 CLEMSON(16KV) - Customers: 1, rd Party Equipment Failure 60% 93% - 72% 83% - 98% 92% 100% 100% 100% % 3% - Operation 1% 0% 100% 15% 6% - 2% 8% % 100% - 100% 100% % 26% 9% 50% Other 39% 7% % 100% 50% 32% 88% 50% Vegetation/Animal Weather/Fire/Earthquake % 10% CROSSON(16KV) - Customers: 5, rd Party % 2% - 29% 18% % 4% - Equipment Failure 86% 38% 49% 69% 56% 100% 77% 76% - 71% 82% 100% 25% 1% - 26% 5% % 20% 81% Operation 6% 46% - 1% 1% - 22% 22% - 0% 0% - 75% 99% 100% 74% 95% - 1% 1% - 2% 6% 19% Other % 0% 0% % % 74% - 67% 52% - Vegetation/Animal 8% 16% 25% 29% 43% % % 25% - 15% 17% - Weather/Fire/Earthquake % 0% ESTABAN(16KV) - Customers: 2, rd Party 19% 27% - 0% 0% - 0% 0% % 100% 100% 10% 4% - 22% 24% 31% Equipment Failure 70% 68% 60% 86% 80% 100% 54% 33% 12% 65% 37% - 69% 60% % 1% - 18% 10% - Operation 6% 2% 21% 3% 9% 0% 31% 56% 53% 18% 50% - 31% 40% % 5% 9% 31% Other - - 1% 1% 2% - 8% 1% - 17% 13% % % 47% 18% 41% 29% 38% Vegetation/Animal 0% 0% 19% Weather/Fire/Earthquake 4% 3% - 10% 9% - 7% 10% 35% % 48% - 13% 28% - EVITA(16KV) - Customers: 2, rd Party Equipment Failure 75% 66% 57% 92% 96% 100% 100% 100% - 100% 100% - 100% 100% 100% 80% 37% - 0% 1% - 9% 5% 1% Operation 17% 5% - 8% 4% % % 47% % 4% - Other 8% 29% 43% % 16% - 100% 99% 100% 91% 91% 99% Vegetation/Animal Weather/Fire/Earthquake

19 Reliability Histories for Individual Circuits Serving Ventura District 2-5 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 FIFTH ST.(16KV) - Customers: rd Party Equipment Failure % 100% % 100% - 100% 100% 100% % 58% 70% Operation 100% 100% % 2% Other % 98% 100% % 100% 100% 53% 42% 30% Vegetation/Animal Weather/Fire/Earthquake FLYNN(16KV) - Customers: 1, rd Party % 97% 26% Equipment Failure 100% 100% 27% 3% 1% 74% 87% 67% % 100% 100% % 51% 7% Operation % 0% - 13% 33% % 0% - 0% 0% - Other % % 100% 100% 27% 49% 93% Vegetation/Animal Weather/Fire/Earthquake % 2% GREENHOUSE(16KV) - Customers: rd Party Equipment Failure Operation 100% 100% Other % 100% - 100% 100% - Vegetation/Animal % % Weather/Fire/Earthquake GUITAR(16KV) - Customers: rd Party 23% 27% 6% - - 4% % 100% % 4% - Equipment Failure 31% 11% 42% 11% 2% - 15% 6% % % 100% - 7% 1% - 12% 39% 8% Operation 0% 1% - 2% 1% - 57% 35% Other % 13% 11% 96% % % % Vegetation/Animal 44% 60% % 4% 33% % % % Weather/Fire/Earthquake 1% 0% - 74% 86% - 6% 54% % 99% - 87% 57% - 19

20 Reliability Histories for Individual Circuits Serving Ventura District 2-6 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 MAXSON(16KV) - Customers: 3, rd Party 47% 83% - 2% 2% - 3% 18% 11% 10% 1% % 0% 14% 1% 0% 4% Equipment Failure 52% 17% - 19% 11% - 72% 23% 88% % 60% - 16% 38% - 17% 29% - Operation 1% 0% - 60% 58% - 23% 56% 2% 6% 3% 100% % 40% % 3% 71% Other % 29% 100% % 62% 86% 75% 42% 25% Vegetation/Animal % % 2% Weather/Fire/Earthquake % 2% - 84% 97% % 26% - MIDDLE ROAD(16KV) - Customers: 1, rd Party 13% 28% - 2% 1% - 32% 34% 38% % 95% 31% 0% 1% 70% 3% 12% 28% Equipment Failure 18% 32% 33% 8% 2% - 56% 52% 53% 100% 100% 100% 100% 100% 49% 13% 5% - 5% 25% - 8% 31% 26% Operation 51% 10% 15% 21% 13% 4% 0% 0% % 0% - 0% 0% - 0% 0% - Other % 25% 10% - 12% 13% 8% % 38% 30% 10% 30% 8% Vegetation/Animal 0% 0% 16% 44% 73% 96% % 3% 0% 69% % 0% 38% Weather/Fire/Earthquake 17% 30% 17% % 36% - 78% 28% - MUGU(16KV) - Customers: 2, rd Party Equipment Failure % 90% % 100% % 8% - Operation % 10% Other % % 100% 100% 76% 92% 100% Vegetation/Animal % Weather/Fire/Earthquake PANCHO(16KV) - Customers: 1, rd Party Equipment Failure 100% 100% 9% 83% 85% - 61% 56% % 100% % 50% 0% 86% 52% 0% Operation % 15% - 39% 44% Other % % 50% 100% 14% 48% 100% Vegetation/Animal Weather/Fire/Earthquake

21 Reliability Histories for Individual Circuits Serving Ventura District 2-7 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 PETIT(16KV) - Customers: rd Party 12% 3% 15% 22% 29% - 63% 73% Equipment Failure 1% 0% - 78% 71% 100% 20% 15% Operation 86% 97% 68% % 100% % 7% - 9% 9% - Other % % 4% % 93% 100% 91% 91% 100% Vegetation/Animal % 4% 100% Weather/Fire/Earthquake % 4% PONDEROSA(16KV) - Customers: 3, rd Party Equipment Failure 30% 42% 23% 95% 93% 100% 44% 18% - 100% 100% 100% % % 37% 38% Operation 2% 2% - 5% 7% - 44% 41% % 100% % 1% - Other 1% 2% 65% % 41% % 100% 100% 55% 63% 62% Vegetation/Animal Weather/Fire/Earthquake 67% 55% 13% PYLE(16KV) - Customers: rd Party Equipment Failure 60% 22% - 100% 100% 100% 5% 10% % 100% - 83% 50% - 65% 46% - Operation 40% 78% 100% % 100% % 8% - Other % 69% - 100% 100% 100% % 50% 100% 14% 46% 100% Vegetation/Animal % 21% 100% Weather/Fire/Earthquake RAINBOW(16KV) - Customers: rd Party 51% 54% 57% 5% 0% % 98% 100% % 97% 100% % 34% 48% Equipment Failure 48% 44% - 25% 17% 6% 68% 52% - 46% 2% - 75% 80% - 25% 3% - 60% 13% - 53% 10% - Operation 2% 2% 43% 38% 19% 0% 5% 12% % 1% - 3% 1% - Other % 47% 32% 13% 16% 100% % 86% 100% 17% 55% 50% Vegetation/Animal % 20% 100% % 0% 2% Weather/Fire/Earthquake % 18% 62% 14% 20%

22 Reliability Histories for Individual Circuits Serving Ventura District 2-8 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 RAMAC(16KV) - Customers: rd Party 59% 82% Equipment Failure 17% 5% 47% 13% 3% - 0% 0% % 100% - 48% 34% - 61% 50% - Operation 23% 12% - 36% 65% - 42% 62% - 100% 100% 100% % 1% 12% Other - - 3% % 58% 38% % 66% 50% 37% 49% 44% Vegetation/Animal 1% 0% 50% 51% 32% 75% % % Weather/Fire/Earthquake REDSTONE(16KV) - Customers: 1, rd Party 5% 30% 23% Equipment Failure 81% 58% 53% 91% 95% 100% 94% 99% 45% % % Operation 1% 1% - 0% 1% - 4% 1% % 100% % 1% - Other 1% 1% 24% 9% 4% % % 100% 2% 99% 99% 1% Vegetation/Animal % % Weather/Fire/Earthquake 11% 9% % 0% 27% REIMANN(16KV) - Customers: 1, rd Party 35% 45% 100% % 18% 51% 100% % 100% % 60% - Equipment Failure 9% 1% - 99% 96% - 12% 3% Operation 56% 54% - 1% 4% - 5% 2% % 100% % 1% - Other % % 100% 100% 73% 39% 100% Vegetation/Animal Weather/Fire/Earthquake % 44% ROSA(16KV) - Customers: 4, rd Party 29% 31% % 92% Equipment Failure 37% 17% 53% 88% 94% - 24% 4% 100% 100% 100% - 100% 100% - 97% 95% 100% 3% 2% - 57% 68% 62% Operation 34% 52% 47% 12% 6% - 8% 4% % 5% - 0% 1% - 1% 1% - Other % 97% 100% 43% 30% 38% Vegetation/Animal Weather/Fire/Earthquake

23 Reliability Histories for Individual Circuits Serving Ventura District 2-9 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 SEMINARY(16KV) - Customers: 1, rd Party % 2% 84% 5% 2% 84% Equipment Failure 100% 100% 50% 89% 90% 67% 27% 2% 84% % 44% - 100% 100% % 10% - Operation 0% 0% 17% 11% 10% - 60% 11% Other % % 12% 87% 16% % 56% % 98% 16% 82% 89% 16% Vegetation/Animal % Weather/Fire/Earthquake SESPE(4.16KV) - Customers: rd Party Equipment Failure % 100% % % 33% 25% Operation 100% 100% % 50% Other % % 50% 100% % % Vegetation/Animal % % % Weather/Fire/Earthquake % 100% - 74% 67% - SIDEWINDER(16KV) - Customers: 2, rd Party % 3% % % Equipment Failure 42% 28% - 22% 1% - 16% 7% 100% 91% 46% % 20% - 7% 5% - 18% 7% - Operation 1% 1% - 41% 96% 100% 63% 69% - 9% 54% 100% 100% 100% % 2% 1% Other 57% 70% 100% 0% 0% - 21% 24% % 80% 33% 93% 95% 35% 81% 91% 34% Vegetation/Animal % % Weather/Fire/Earthquake % 0% % 0% 33% 0% 0% 16% TENNECO(12KV) - Customers: 4, rd Party 4% 25% - 0% 0% - 17% 4% 1% % % Equipment Failure 2% 0% - 10% 33% 17% 1% 1% - 17% 23% - 100% 100% - 100% 100% 34% % 34% 8% Operation 16% 12% - 0% 0% - 0% 0% - 0% 0% % 0% - Other 77% 63% 73% 74% 66% 66% 52% 74% 47% 2% 0% 33% % 2% 0% 6% Vegetation/Animal % - - 8% % 2% 30% % % % 26% 31% Weather/Fire/Earthquake 1% 0% 13% 16% 1% 9% 29% 20% 19% 80% 47% 67% % % 40% 24% 23

24 Reliability Histories for Individual Circuits Serving Ventura 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 TIMBER CANYON(16KV) - Customers: rd Party Equipment Failure 57% 44% - 11% 3% - 7% 0% - 100% 100% - 16% 3% 100% 46% 68% % 25% 17% Operation 11% 11% - 0% 1% - 71% 97% % 97% % 1% - 3% 14% - Other % 1% 2% - 1% 0% 100% % % 32% - 0% 5% 65% 1% 3% 49% Vegetation/Animal % % 3% % % % Weather/Fire/Earthquake 32% 44% - 88% 94% % 94% - 91% 58% - TIROS(16KV) - Customers: 1, rd Party % 14% - 5% 8% Equipment Failure 40% 10% - 91% 63% 53% 64% 62% 75% 5% 14% - 6% 4% - 50% 79% - 59% 1% 33% 27% 7% 33% Operation 32% 82% 100% 0% 0% - 6% 3% Other 11% 2% % 26% 25% 90% 78% % 21% - 41% 99% 33% 60% 84% 33% Vegetation/Animal 12% 5% % 8% % 2% 1% 33% Weather/Fire/Earthquake 4% 1% - 3% 23% 47% % 96% 100% % 8% 1% ZONE(16KV) - Customers: rd Party % 53% Equipment Failure 85% 89% - 88% 88% 100% 21% 12% - 92% 99% - 100% 100% - 92% 91% - 87% 89% - 91% 94% - Operation 5% 2% - 12% 11% % 1% % 9% - 13% 11% - 9% 6% - Other % 5% 25% Vegetation/Animal % % % Weather/Fire/Earthquake 10% 9% - 0% 0% - 14% 29% 75%

25 Reliability Histories for Individual Circuits Serving Ventura 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 25