Circuit Reliability Review

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Hilda Rich
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1 Circuit Reliability Review Camarillo January 2018

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

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 Camarillo CircuitList1 There are 16 circuits that serve Camarillo 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers ADOLFO(16KV) ARNEILL(16KV) 1, BELPAC(16KV) 2, CLEMSON(16KV) 1, CROSSON(16KV) 5, ESTABAN(16KV) 2, EVITA(16KV) 2, FLYNN(16KV) 1, MUGU(16KV) 2, PANCHO(16KV) 1, PONDEROSA(16KV) 3, REDSTONE(16KV) 1, REIMANN(16KV) 1, ROSA(16KV) 4, SEMINARY(16KV) 1, WIGTON(16KV) 1, Grand Total 35,897 7

8 Reliability History of Circuits Serving Camarillo (No Exclusions) BarChart SAIDI (average minutes of sustained interruptions) Camarillo 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 process 8

9 Causes of Repair Outages in Camarillo 2017 SAIDIChart Weather /Fire /Earthquake 1.4% Contributions to SAIDI by Outage Cause Vegetation /Animal 3.3% 3rd Party 5.0% 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 63.7% Equipment Failure 24.4% Operation 2.2% 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 Camarillo 2017 SAIFIChart Weather /Fire /Earthquake 3.2% Contributions to SAIFI by Outage Cause Vegetation /Animal 3.7% 3rd Party 8.1% 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 51.5% Equipment Failure 29.9% 3rd Party Equipment Failure Operation Other Vegetation /Animal Weather /Fire /Earthquake Operation 3.6% 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 Camarillo Updated through Dec 2017

14 Average Reliability of 16 Circuits Serving Camarillo 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 16 Circuits Serving Camarillo -- Total Customers: 35, rd Party 10% 15% 3% 3% 3% 6% 11% 23% 6% 9% 7% 31% 47% 21% 1% 0% 4% 5% 8% 6% Equipment Failure 65% 58% 47% 80% 77% 77% 71% 63% 35% 85% 86% 83% 86% 87% 1% 63% 45% 79% 2% 4% 0% 24% 30% 36% Operation 13% 16% 16% 8% 6% 0% 10% 8% 21% 4% 6% - 13% 13% 8% 4% 8% - 0% 0% 13% 2% 4% 7% Other 1% 4% 24% 1% 1% 14% 1% 3% 24% 2% 1% 17% 0% 0% 90% 1% 1% - 90% 84% 79% 64% 52% 49% Vegetation/Animal 0% 0% 10% 6% 13% 3% - - 4% - 5% 6% 4% 3% 4% 2% Weather/Fire/Earthquake 10% 7% 1% 1% 1% - 7% 4% 10% - 2% 5% - 1% 3% - 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 Camarillo - 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 ADOLFO(16KV) - Customers: CircuitHistory rd Party % 55% Equipment Failure % 32% 100% 100% 100% 100% Operation % 13% Other % 100% 100% 100% 100% 100% Vegetation/Animal Weather/Fire/Earthquake ARNEILL(16KV) - Customers: 1, rd Party - - 0% 0% Equipment Failure % 75% - 100% 100% - - 4% 30% - 4% 29% - Operation 100% 100% - 8% 25% 100% 100% - 100% 100% % 1% - Other % 70% 100% 94% 69% 100% Vegetation/Animal Weather/Fire/Earthquake - - 0% 0% - - 1% 0% - 1% 0% - BELPAC(16KV) - Customers: 2, rd Party 62% 46% - - Equipment Failure 30% 23% % 100% 100% 35% 100% 100% 68% % 42% 82% 96% 68% Operation 8% 31% 0% 0% 32% % 58% 18% 4% - Other % % % % % Vegetation/Animal Weather/Fire/Earthquake 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% 100% % 26% 9% 50% Other 39% 7% 100% 100% 50% 32% 88% 50% Vegetation/Animal Weather/Fire/Earthquake % 10%

16 Reliability Histories for Individual Circuits Serving Camarillo - 2 of 4 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 CROSSON(16KV) - Customers: 5, rd Party - - 1% 2% - 29% 18% - - 5% 4% - Equipment Failure 86% 38% 49% 69% 56% 100% 77% 76% - 71% 82% 100% 25% 1% - 26% 5% 12% 20% 81% Operation 6% 46% - 1% 1% - 22% 22% - 0% 0% - 75% 99% 100% 74% 95% - 1% 1% - 2% 6% 19% Other % 0% 0% % - 82% 74% - 67% 52% - Vegetation/Animal 8% 16% 25% 29% 43% % - 18% 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% 4% 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% - 22% 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% % - - 4% 47% 0% 4% - Other 8% 29% 43% 16% 16% - 100% 99% 100% 91% 91% 99% 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% - - 1% 0% - 0% 0% - Other % % 100% 100% 27% 49% 93% Vegetation/Animal Weather/Fire/Earthquake % 2%

17 Reliability Histories for Individual Circuits Serving Camarillo - 3 of 4 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 MUGU(16KV) - Customers: 2, rd Party Equipment Failure % 90% 100% 100% % 8% - Operation % 10% Other % % 100% 100% 76% 92% 100% Vegetation/Animal - 100% - - Weather/Fire/Earthquake PANCHO(16KV) - Customers: 1, rd Party Equipment Failure 100% 100% 9% 83% 85% - 61% 56% 100% 100% 75% 50% 0% 86% 52% 0% Operation % 15% - 39% 44% Other % % 50% 100% 14% 48% 100% Vegetation/Animal Weather/Fire/Earthquake PONDEROSA(16KV) - Customers: 3, rd Party Equipment Failure 30% 42% 23% 95% 93% 100% 44% 18% - 100% 100% 100% - 100% % 37% 38% Operation 2% 2% - 5% 7% - 44% 41% 100% 100% % 1% - Other 1% 2% 65% % 41% % 100% 100% 55% 63% 62% Vegetation/Animal Weather/Fire/Earthquake 67% 55% 13% - 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% 100% % 1% - Other 1% 1% 24% 9% 4% % - 100% 100% 2% 99% 99% 1% Vegetation/Animal 98% % Weather/Fire/Earthquake 11% 9% 2% 0% 27%

18 Reliability Histories for Individual Circuits Serving Camarillo - 4 of 4 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 REIMANN(16KV) - Customers: 1, rd Party 35% 45% 100% % 18% 51% 100% % 100% 25% 60% - Equipment Failure 9% 1% - 99% 96% - 12% 3% Operation 56% 54% - 1% 4% - 5% 2% 100% 100% % 1% - Other - 50% 100% 100% 100% 73% 39% 100% Vegetation/Animal Weather/Fire/Earthquake % 44% ROSA(16KV) - Customers: 4, rd Party 29% 31% 68% 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 SEMINARY(16KV) - Customers: 1, rd Party - - 6% 2% 84% 5% 2% 84% Equipment Failure 100% 100% 50% 89% 90% 67% 27% 2% 84% % 44% - 100% 100% 13% 10% - Operation 0% 0% 17% 11% 10% - 60% 11% Other % % 12% 87% 16% % 56% 94% 98% 16% 82% 89% 16% Vegetation/Animal % - Weather/Fire/Earthquake WIGTON(16KV) - Customers: 1, rd Party Equipment Failure 86% 91% 100% 32% 30% - 87% 94% % 100% 13% 9% - Operation 14% 9% - 59% 57% - 13% 6% - 100% 100% - - 6% 5% - Other % 13% - 100% 100% 100% 81% 86% 100% Vegetation/Animal Weather/Fire/Earthquake 18

Circuit Reliability Review

Circuit Reliability Review Ojai January 2018 Building a Smarter Grid for Southern California Southern California Edison is developing an electric grid to support California s transition to a clean and