Circuit Reliability Review

Circuit Reliability Review Ventura District 1 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 expectations of our customers. We are investing more than $13 billion in the power distribution grid over three years (2017-19). 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

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

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

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

* 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

Overview of Ventura District 1 CircuitList1 There are 30 circuits that serve Ventura District 1 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers ALVARADO(16KV) 2,313 - - - BUCKAROO(16KV) 2,418 - - - CANET(16KV) 3,749 - - - CARNEGIE(16KV) 4,355 - - - CASTRO(16KV) 2,415 - - - CUYAMA(12KV) 137 - - - DIABLO(16KV) 4,174 - - - ELAINE(2.4KV) 33 - - - GRANDAD(16KV) 25 - - - GRINGO(16KV) 4,504 - - - HIGHWAY(16KV) 5,000 - - - MALOY(16KV) 1,014 - - - MATILIJA(16KV) 1,946 - - - MAXSON(16KV) 3,324 - - - MIDDLE ROAD(16KV) 1,144 - - - NAUMANN(16KV) 1,976 - - - PATRICIA(16KV) 2,594 - - - PEARCE(4.16KV) 591 - - - PEDRO(16KV) 678 - - - READY(16KV) 2,638 - - - RED MOUNTAIN(16KV) 359 - - - RICARDO(16KV) 2,707 - - - RIVA(16KV) 3,193 - - - SALVADOR(16KV) 2,600 - - - SAN NICHOLAS(16KV) 3,226 - - - SEACLIFF(16KV) 1,176 - - - SEXTON(16KV) 3,523 - - - THACHER(16KV) 2,224 - - - TICO(16KV) 2,004 - - - VINEYARD(16KV) 4,890 - - - Grand Total 70,930 7

Reliability History of Circuits Serving Ventura District 1 (No Exclusions) BarChart 1000.0 2014 2015 2016 2017 916.1 800.0 SAIDI (average minutes of sustained interruptions) 600.0 400.0 200.0 0.0 112.1 110.2 115.6 114.8 164.4 134.5 139.7 Ventura District 1 SAIFI (average frequency of sustained interruptions) MAIFI (average frequency of momentary interruptions) 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.8 2.0 1.0 1.0 0.9 1.7 1.4 1.4 1.5 2.1 3.7 1.1 1.2 2.5 1.8 1.6 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

Causes of Repair Outages in Ventura District 1 2017 SAIDIChart Contributions to SAIDI by Outage Cause 3rd Party 1.2% 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 59.4% Equipment Failure 8.1% Operation 11.8% Other 19.3% 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

Causes of Repair Outages in Ventura District 1 2017 SAIFIChart 3rd Party 3.8% Contributions to SAIFI by Outage Cause Vegetation /Animal 0.1% 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 19.4% Other 41.9% Equipment Failure 26.1% Operation 8.8% 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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Back-up Slides Reliability Histories of Circuits Serving Ventura District 1 Updated through Dec 2017

Average Reliability of 30 Circuits Serving Ventura District 1 CitySummary 2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017 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 30 Circuits Serving Ventura District 1 -- Total Customers: 70,930 110.2 0.8 2.0 115.6 1.0 1.7 164.4 1.5 2.1 24.1 0.3 0.4 9.1 0.2 0.3 26.2 0.3 0.7 856.7 3.0 1.2 916.1 3.7 2.5 3rd Party 22% 41% 14% 4% 7% 8% 3% 3% 7% 2% 1% 9% 15% 17% 18% 15% 26% 28% 1% 1% 2% 1% 4% 11% Equipment Failure 38% 24% 22% 61% 50% 35% 45% 41% 27% 73% 69% 34% 56% 74% 35% 67% 47% 51% 4% 17% 17% 8% 26% 31% Operation 31% 20% 5% 7% 6% 4% 13% 19% 6% 7% 10% 31% 21% 8% 4% 5% 4% 12% 12% 9% 3% 12% 9% 10% Other 3% 2% 15% 6% 8% 23% 13% 9% 31% 3% 1% 16% 0% 0% 26% 6% 10% 3% 20% 52% 63% 19% 42% 36% Vegetation/Animal 1% 4% 30% 2% 3% 23% 2% 6% 10% 1% 0% 10% 3% 1% 17% 0% 0% 3% 0% 0% 1% 0% 0% 4% Weather/Fire/Earthquake 5% 10% 14% 20% 25% 7% 25% 22% 19% 15% 19% - 3% 0% - 7% 13% 4% 63% 21% 15% 59% 19% 8% SCE SYSTEMWIDE 112.1 1.0 1.4 114.8 0.9 1.4 134.5 1.1 1.6 42.6 0.3 0.5 23.6 0.2 0.4 29.2 0.2 0.4 44.3 0.4 0.5 139.7 1.2 1.8 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

Reliability Histories for Individual Circuits Serving Ventura District 1-1 of 8 2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017 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 ALVARADO(16KV) - Customers: 2,313 173.3 2.2 3.0 31.1 1.0 2.0 91.0 0.7 1.2 - - CircuitHistory - 0.2 0.0-8.8 0.1-104.0 2.0 1.0 113.0 2.1 1.0 3rd Party 52% 91% 33% - - - - - - - - 1- - - - - - - - - - - - - Equipment Failure 48% 9% - - - - 63% 73% 18% - - - - - - - - - - - - - - - Operation 0% 0% - 0% 1% - 37% 27% - - - - - - - 8% 57% - - - - 1% 2% - Other - - - 100% 99% 100% - - 82% - - - - - - 92% 43% - 17% 50% 100% 23% 50% 100% Vegetation/Animal - - 67% - - - - - - - - - 100% 100% - - - - - - - 0% 0% - Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - 83% 50% - 76% 49% - BUCKAROO(16KV) - Customers: 2,418 73.5 0.4 2.1 59.8 0.7 7.3 245.9 1.2 1.0 9.2 0.1 1.0 0.7 0.0-3.4 0.0 3.0 152.5 2.2 0.8 165.7 2.3 4.8 3rd Party 31% 25% 48% 20% 24% 25% - - - 100% 100% 100% - - - - - 67% - - - 6% 3% 62% Equipment Failure 27% 31% - 45% 45% 23% 13% 10% - - - - - - - 70% 81% 33% - - - 1% 1% 20% Operation 15% 6% 3% 18% 7% - 2% 1% - - - - 5% 33% - 30% 19% - - - - 1% 0% - Other 2% 2% - 17% 24% 39% 81% 88% - - - - 95% 67% - - - - 44% 54% 100% 41% 51% 17% Vegetation/Animal - - 48% - - 14% - - 100% - - - - - - - - - - - - - - - Weather/Fire/Earthquake 26% 37% - - - - 4% 1% - - - - - - - - - - 56% 46% - 52% 44% - CANET(16KV) - Customers: 3,749 145.6 0.1 1.0 151.6 1.9 2.6 334.6 2.2 2.1 - - - 1.7 0.0 - - - 1.0 3487.2 3.8 0.1 3488.9 3.8 1.2 3rd Party - - - - - - - - 44% - - - - - - - - 100% - - - - - 88% Equipment Failure 5% 10% - 51% 43% 12% 84% 51% 7% - - - 85% 80% - - - - 1% 2% - 1% 2% - Operation 95% 90% - 2% 1% - 7% 5% - - - - 14% 10% - - - - 15% 34% - 15% 34% - Other - - - 16% 4% 38% - - 49% - - - 1% 10% - - - - 1% 26% 100% 1% 26% 12% Vegetation/Animal - - - - - 38% 9% 44% - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - 100% 31% 52% 12% - - - - - - - - - - - - 84% 38% - 84% 38% - CARNEGIE(16KV) - Customers: 4,355 132.5 1.1 2.3 72.4 0.6 2.0 192.7 1.1 2.2 1.7 0.0 1.0 0.3 0.0 1.0 3.3 0.0-213.5 2.4 1.0 218.7 2.4 3.0 3rd Party - - - 40% 58% - - - - - - - - - - - - - - - - - - - Equipment Failure 45% 69% 54% 30% 19% 1% 11% 8% 46% 72% 9% - - - 100% 92% 88% - 1% 0% 4% 3% 1% 34% Operation 45% 22% - 19% 9% - 40% 58% 9% 28% 91% 100% 100% 100% - 8% 12% - 2% 1% - 2% 2% 33% Other 9% 9% 1% - - 50% 16% 14% - - - - - - - - - - 57% 57% 96% 55% 56% 33% Vegetation/Animal - - 44% 0% 0% 49% 6% 13% - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 0% 0% 1% 10% 15% - 27% 8% 45% - - - - - - - - - 40% 42% - 39% 41% - 15

Reliability Histories for Individual Circuits Serving Ventura District 1-2 of 8 CircuitHistory 2 2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th 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 CASTRO(16KV) - Customers: 2,415 48.6 0.2 0.1 41.0 0.1 0.1 56.4 0.5 2.2 - - - 8.9 0.1-30.5 0.1 1.1 1216.8 1.9 1.0 1256.2 2.1 2.1 3rd Party 11% 32% - - - - - - - - - - 99% 100% - - - 9% - - - 1% 5% 5% Equipment Failure 2% 1% - 95% 80% 7% 43% 24% 7% - - - 1% 0% - 100% 100% 91% 0% 0% - 2% 4% 48% Operation 28% 20% - - - - 28% 73% - - - - - - - - - - 10% 2% - 10% 2% - Other - - 100% - - 93% 11% 1% - - - - - - - - - - 1% 46% 100% 1% 42% 48% Vegetation/Animal - - - 2% 11% - - - 93% - - - - - - - - - - - - - - - Weather/Fire/Earthquake 59% 47% - 3% 9% - 18% 2% 0% - - - - - - - - - 89% 52% - 86% 47% - CUYAMA(12KV) - Customers: 137 380.1 1.7 7.7 690.8 1.1 4.0 1062.6 2.7 2.0 26.6 0.1 2.3 3.1 0.0 0.8 191.8 0.2 0.5 - - 0.2 221.6 0.3 3.9 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 1% 0% - 4% 1% - 0% 0% - - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - 100% 100% - - - - - - - 1% 5% - Other 99% 100% 100% 72% 65% 100% 100% 100% 100% 100% 100% 100% - - 100% 100% 100% 100% - - 100% 99% 95% 100% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 24% 34% - - - - - - - - - - - - - - - - - - - DIABLO(16KV) - Customers: 4,174 15.6 0.1 1.0 21.0 0.2-127.1 2.0 3.1 12.7 0.0-33.7 1.0 0.0 - - - 290.9 2.0 0.1 337.3 3.0 0.1 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 95% 95% 100% 13% 3% - 33% 52% 4% - - - 96% 97% 100% - - - - - - 10% 33% 9% Operation 5% 5% - 36% 42% - 63% 44% 32% 83% 46% - 4% 3% - - - - 7% 2% - 10% 3% - Other - - - 11% 14% - 3% 3% 32% - - - - - - - - - 93% 98% 100% 80% 63% 91% Vegetation/Animal - - - 36% 38% - 1% 0% - 17% 54% - - - - - - - - - - 1% 1% - Weather/Fire/Earthquake - - - 4% 3% - 0% 0% 32% - - - - - - - - - - - - - - - ELAINE(2.4KV) - Customers: 33 59.2 1.0 3.0 161.5 1.0-356.5 1.0 - - - 1.0 - - - - - - 18.0 1.0 1.0 18.0 1.0 2.0 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - - - - 100% 100% - - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - 67% - - - - - - - - 100% - - - - - - 100% 100% 100% 100% 100% 100% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 100% 100% 33% 100% 100% - - - - - - - - - - - - - - - - - - - 16

Reliability Histories for Individual Circuits Serving Ventura District 1-3 of 8 CircuitHistory 3 2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017 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 GRANDAD(16KV) - Customers: 25 425.6 1.0 1.5 1162.8 1.6 1.6 258.1 2.1 - - - - - - - 18.2 0.0-9776.7 2.0 1.0 9794.9 2.0 1.0 3rd Party 82% 50% 34% - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - - - - - - - - - - - - - 100% 100% - - - - 0% 2% - Operation 18% 50% - 74% 37% 36% - - - - - - - - - - - - - - - - - - Other - - 66% - - - 100% 100% - - - - - - - - - - 0% 50% 100% 0% 49% 100% Vegetation/Animal - - - - - 64% - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 26% 63% - - - - - - - - - - - - - 100% 50% - 100% 49% - GRINGO(16KV) - Customers: 4,504 137.6 1.2 1.3 96.6 0.7 0.3 87.6 1.4 2.0 10.7 0.0-24.6 0.1 1.0 14.6 0.1 0.0 149.5 2.4 0.7 199.4 2.6 1.7 3rd Party 50% 85% 25% - - - - - - - - - - - - - - - - - - - - - Equipment Failure 21% 9% 75% 95% 96% 100% 28% 48% 34% 100% 100% - - - - 82% 84% 100% 14% 42% - 22% 43% 0% Operation 29% 6% - 5% 4% - 8% 47% 17% - - - 100% 100% - 18% 16% - 1% 1% - 15% 4% - Other - - - - - - - - 49% - - - - - 100% - - - 85% 57% 100% 63% 53% 100% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - 64% 5% - - - - - - - - - - - - - - - - HIGHWAY(16KV) - Customers: 5,000 65.1 0.2 1.0 230.4 3.0 2.0 211.5 2.2 4.0 12.8 0.0-23.2 0.1-0.5 0.0-212.0 4.0 2.8 248.6 4.1 2.8 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 48% 65% - 78% 66% 100% 22% 5% - 100% 100% - 99% 99% - 100% 100% - 90% 74% 64% 91% 75% 64% Operation 52% 35% - 1% 1% - 3% 2% - - - - 1% 1% - - - - 2% 1% - 2% 1% - Other - - - - - - - - 25% - - - - - - - - - 8% 25% 36% 7% 25% 36% Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 21% 34% - 75% 94% 75% - - - - - - - - - - - - - - - MALOY(16KV) - Customers: 1,014 68.9 0.3 1.2 270.1 2.0 0.5 0.2 0.0 - - - - - - - - - 1.0 270.5 4.6 1.6 270.5 4.6 2.6 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - 63% 73% 100% - - - - - - - - - - - - 58% 52% 36% 58% 52% 22% Operation 100% 100% 17% 37% 27% - 61% 50% - - - - - - - - - - 35% 26% - 35% 26% - Other - - - - - - 39% 50% - - - - - - - - - 100% 7% 22% 64% 7% 22% 78% Vegetation/Animal - - 83% - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - - 17

Reliability Histories for Individual Circuits Serving Ventura District 1-4 of 8 CircuitHistory 4 2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017 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 MATILIJA(16KV) - Customers: 1,946 8.3 0.0 1.0 24.8 0.7 1.9 441.0 3.6 1.4 25.0 0.1-40.5 0.9 1.1 40.7 0.1 1.0 292.8 4.0 1.1 398.9 5.0 3.3 3rd Party - - - - - - - - - - - - 97% 99% 13% - - - - - - 10% 17% 4% Equipment Failure - - - 100% 100% 100% 64% 38% 90% 82% 56% - - - - 100% 100% 100% - - - 15% 2% 30% Operation 95% 80% - - - - 1% 2% - 4% 19% - - - - - - - - - - 0% 0% - Other - - - - - - 3% 3% - - - - - - - - - - 77% 75% 100% 56% 60% 35% Vegetation/Animal 5% 20% 100% - - - 2% 24% 10% - - - 3% 1% 87% - - - 0% 0% - 1% 0% 30% Weather/Fire/Earthquake - - - - - - 29% 34% - 14% 25% - - - - - - - 23% 25% - 18% 20% - MAXSON(16KV) - Customers: 3,324 125.7 1.2 1.0 14.1 0.1 0.1 82.3 0.2 1.2 47.9 1.0 1.1 - - - 17.3 0.2-526.1 2.6 0.5 591.4 3.8 1.6 3rd Party 47% 83% - 2% 2% - 3% 18% 11% 10% 1% - - - - - - - 0% 0% 14% 1% 0% 4% Equipment Failure 52% 17% - 19% 11% - 72% 23% 88% - - - - - - 97% 60% - 16% 38% - 17% 29% - Operation 1% 0% - 60% 58% - 23% 56% 2% 6% 3% 100% - - - 3% 40% - - - - 1% 3% 71% Other - - - 19% 29% 100% - - - - - - - - - - - - 84% 62% 86% 75% 42% 25% Vegetation/Animal - - 100% - - - 0% 2% - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - 2% 2% - 84% 97% - - - - - - - - - - 7% 26% - MIDDLE ROAD(16KV) - Customers: 1,144 358.6 3.5 6.1 108.0 0.8 0.5 395.0 4.0 5.6 43.5 0.5 0.5 6.2 0.0 1.9 59.6 0.6 1.5 1572.3 4.0 1.4 1681.6 5.1 5.3 3rd Party 13% 28% - 2% 1% - 32% 34% 38% - - - - - - 84% 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% - - - - - - - 1% 0% - 0% 0% - 0% 0% - Other - - 19% 25% 10% - 12% 13% 8% - - - - - - - - - 11% 38% 30% 10% 30% 8% Vegetation/Animal 0% 0% 16% 44% 73% 96% - - - - - - - - 51% 3% 0% 69% - - - 0% 0% 38% Weather/Fire/Earthquake 17% 30% 17% - - - - - - - - - - - - - - - 84% 36% - 78% 28% - NAUMANN(16KV) - Customers: 1,976 185.1 2.6 0.5 39.3 0.1 1.0 21.3 0.8 1.5 3.0 0.0 - - - - - - - 141.2 1.5 0.6 144.2 1.5 0.6 3rd Party 37% 38% - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 49% 21% 100% 99% 88% - 10% 1% - - - - - - - - - - - - - - - - Operation 1% 0% - 1% 12% - 68% 39% - 100% 100% - - - - - - - - - - 2% 1% - Other 5% 2% - - - - - - - - - - - - - - - - 100% 100% 100% 98% 99% 100% Vegetation/Animal 9% 39% - - - 100% 7% 2% 64% - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - 15% 59% 36% - - - - - - - - - - - - - - - 18

Reliability Histories for Individual Circuits Serving Ventura District 1-5 of 8 CircuitHistory 5 2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017 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 PATRICIA(16KV) - Customers: 2,594 60.1 0.7 3.3 131.1 0.7 4.6 182.6 2.2 2.0 7.2 0.0 1.0 13.7 0.0 0.2 94.6 1.3 1.8 1351.2 3.1 1.6 1466.7 4.5 4.6 3rd Party 0% 0% 15% 0% 0% - 7% 2% 2% - - - - - - - - - - - - - - - Equipment Failure 45% 32% 21% 54% 37% 9% 31% 49% - 100% 100% - 14% 7% - 87% 93% 100% 0% 0% - 6% 28% 39% Operation 16% 7% - 0% 0% 44% 1% 1% - - - - 5% 15% 100% 2% 0% - 19% 19% - 18% 14% 4% Other - - 15% - - 1% 26% 2% 49% - - - - - - - - - 21% 76% 100% 19% 53% 35% Vegetation/Animal - - 30% 9% 7% 33% 0% 0% 49% - - 100% 20% 50% - - - - - - - 0% 0% 22% Weather/Fire/Earthquake 38% 60% 18% 36% 56% 13% 35% 46% - - - - 61% 28% - 12% 6% - 60% 4% - 57% 5% - PEARCE(4.16KV) - Customers: 591 - - 2.0 36.2 0.1 3.9 3.3 0.0 1.0 - - - - - - - - - 1099.6 3.3 2.0 1099.6 3.3 2.0 3rd Party - - - - - - - - 100% - - - - - - - - - 37% 30% - 37% 30% - Equipment Failure - - - 64% 46% - - - - - - - - - - - - - 8% 30% - 8% 30% - Operation - - - 36% 54% - 100% 100% - - - - - - - - - - 53% 9% 50% 53% 9% 50% Other - - 50% - - 100% - - - - - - - - - - - - 2% 30% 50% 2% 30% 50% Vegetation/Animal - - 50% - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - - PEDRO(16KV) - Customers: 678 93.5 1.6 1.1 33.1 1.0 1.0 169.1 2.2 4.7 4.7 0.6-40.7 1.5 0.0 32.1 1.0 0.0 390.2 3.0 1.0 467.7 6.0 1.1 3rd Party - - - - - - - - 21% - - - - - - - - - - - - - - - Equipment Failure 100% 100% 100% 4% 0% - 50% 98% 37% 98% 100% - 100% 100% 100% - - - - - - 10% 35% 4% Operation - - - 10% 2% - - - - 2% 0% - - - - - - - - - - 0% 0% - Other - - - - - 95% 50% 2% 42% - - - - - - 100% 100% 100% 99% 99% 5% 90% 65% 8% Vegetation/Animal - - - 86% 98% 5% - - - - - - - - - - - - 1% 1% 95% 1% 0% 87% Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - - READY(16KV) - Customers: 2,638 12.3 0.0 1.0 171.7 1.5 1.0 156.3 1.2 1.9 108.8 1.0-3.0 0.1 0.1 - - - 143.3 1.4 0.5 255.2 2.6 0.7 3rd Party - - - - - - - - - - - - - - 100% - - - - - - - - 18% Equipment Failure - - 100% 0% 0% - 57% 19% - 100% 100% - - - - - - - - - - 43% 39% - Operation 100% 100% - 16% 26% - 20% 45% 50% 0% 0% - 100% 100% - - - - - - - 1% 5% - Other - - - - - - 0% 0% 50% - - - - - - - - - 100% 100% 100% 56% 57% 82% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 84% 74% 100% 23% 36% - - - - - - - - - - - - - - - - 19

Reliability Histories for Individual Circuits Serving Ventura District 1-6 of 8 CircuitHistory 6 2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017 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 RED MOUNTAIN(16KV) - Customers: 359 368.0 2.8 2.1 214.0 1.2 1.0 272.2 0.6 0.9 13.4 0.0 1.0 - - 0.9 - - - 8343.8 4.3 0.2 8357.2 4.4 2.1 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - - - - 78% 45% 100% - - - - - - - - - 1% 20% - 1% 20% - Operation 29% 26% - - - - - - - 100% 100% - - - 100% - - - 0% 15% - 0% 15% 42% Other 47% 32% 53% - - - 7% 3% - - - 100% - - - - - - 21% 46% 100% 21% 45% 58% Vegetation/Animal - - - - - 100% - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 25% 42% 47% 100% 100% - 15% 52% - - - - - - - - - - 78% 20% - 78% 19% - RICARDO(16KV) - Customers: 2,707 15.1 0.1 4.1 33.1 0.1 2.0 102.5 0.3 2.8 87.8 1.0 1.0 0.3 0.0 1.0 0.4 0.0 2.0 1046.6 4.0 1.3 1135.1 5.0 5.3 3rd Party 8% 5% - - - - - - - - - - 29% 40% 100% - - - - - - 0% 0% 19% Equipment Failure 58% 15% 49% 87% 63% 100% 19% 32% - 100% 100% 100% - - - - - - - - - 8% 20% 19% Operation 33% 80% 2% 13% 37% - 5% 22% - - - - 71% 60% - 100% 100% 100% 1% 18% - 1% 14% 38% Other - - 25% - - - 74% 39% 100% - - - - - - - - - 20% 43% 100% 18% 34% 24% Vegetation/Animal - - 24% - - - 2% 7% - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - 79% 40% - 72% 32% - RIVA(16KV) - Customers: 3,193 224.9 1.2 4.3 278.0 1.4 2.6 95.0 1.0 1.4 37.3 1.1 0.6 0.5 0.0-3.0 0.0 0.3 607.8 2.1 0.5 648.5 3.2 1.5 3rd Party 48% 25% 12% - - 38% 12% 8% - - - - - - - - - 100% - - - - - 24% Equipment Failure 42% 40% 8% 90% 75% 24% 36% 10% 24% 96% 96% 45% - - - 100% 100% - 2% 0% - 8% 34% 20% Operation 2% 2% - 5% 18% - 6% 3% - 4% 4% - 100% 100% - - - - 36% 23% - 34% 16% - Other 1% 2% 32% 4% 7% - 44% 74% 73% - - 55% - - - - - - 60% 73% 100% 56% 47% 56% Vegetation/Animal - - - 0% 0% 38% - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 6% 31% 49% - - - 2% 5% 3% - - - - - - - - - 2% 4% - 2% 3% - SALVADOR(16KV) - Customers: 2,600 - - 1.0 191.4 2.1 0.6 27.0 0.4 1.8 115.3 1.8-27.3 1.1 0.4 209.7 1.9 0.4 344.4 2.8 0.2 696.7 7.6 1.0 3rd Party - - 100% - - - - - - - - - - - - 25% 52% - - - - 8% 13% - Equipment Failure - - - 94% 90% 100% 96% 98% 43% 100% 100% - 95% 98% 100% 75% 47% 100% - - - 43% 49% 80% Operation - - - 6% 10% - 4% 2% - - - - 5% 2% - 0% 1% - - - - 0% 0% - Other - - - - - - - - 57% - - - - - - - - - 100% 100% 100% 49% 37% 20% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - - 20

Reliability Histories for Individual Circuits Serving Ventura District 1-7 of 8 CircuitHistory 7 2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017 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 SAN NICHOLAS(16KV) - Customers: 3,226 12.6 0.2 3.8 159.2 2.2 4.9 41.0 1.1 1.1 7.7 0.4 - - - - 1.9 0.0-495.4 3.3 1.8 505.1 3.7 1.8 3rd Party 85% 92% 21% 31% 46% 16% - - - - - - - - - - - - - - - - - - Equipment Failure - - - 1% 0% 41% 91% 95% - - - - - - - - - - - - - - - - Operation 11% 5% - 2% 4% - 9% 5% - 100% 100% - - - - 100% 100% - 18% 31% - 19% 39% - Other - - 26% 1% 0% 21% - - 100% - - - - - - - - - 14% 38% 100% 14% 34% 100% Vegetation/Animal 4% 3% 26% - - 21% - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - 26% 66% 49% 1% - - - - - - - - - - - - 68% 31% - 66% 27% - SEACLIFF(16KV) - Customers: 1,176 313.4 1.0 2.3 62.8 0.3 3.2 422.9 2.5 1.8 50.9 0.2 0.1 0.8 0.0-143.0 1.5 2.2 2135.0 4.6 11.7 2329.6 6.4 14.1 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 96% 85% 0% 7% 2% 31% 3% 1% - 10% 7% - - - - 63% 27% 80% 2% 5% 4% 6% 10% 16% Operation 1% 7% - 1% 2% - 6% 6% - - - - - - - 11% 3% - 11% 9% 0% 11% 7% 0% Other - - 98% 21% 49% 7% 12% 43% 8% 44% 23% 100% - - - 26% 70% 7% 0% 0% 7% 3% 18% 7% Vegetation/Animal - - - 43% 24% 62% 0% 0% - - - - 100% 100% - - - 13% - - - 0% 0% 2% Weather/Fire/Earthquake 4% 8% 2% 28% 23% - 80% 50% 92% 45% 70% - - - - - - - 87% 86% 89% 80% 65% 74% SEXTON(16KV) - Customers: 3,523 212.2 1.8 1.0 263.9 2.0 1.5 239.5 1.6 - - - - - - - 49.8 0.5 2.0 3003.9 5.9 0.9 3053.8 6.4 3.0 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 6% 8% - 77% 74% 34% 55% 88% - - - - - - - 91% 96% 100% 2% 18% - 4% 24% 68% Operation 94% 92% - 2% 1% - 7% 3% - - - - - - - 9% 4% - 0% 9% 54% 0% 9% 17% Other - - - - - - - - - - - - - - - - - - 7% 35% 46% 7% 32% 15% Vegetation/Animal - - 100% - - - - - - - - - - - - - - - 0% 0% - 0% 0% - Weather/Fire/Earthquake - - - 21% 24% 66% 39% 10% - - - - - - - - - - 90% 38% - 89% 35% - THACHER(16KV) - Customers: 2,224 88.9 0.8 2.8 32.9 0.2 1.7 311.5 3.1 5.8 75.7 0.6 1.0 1.7 0.0 0.1 34.8 0.2 1.0 1939.4 3.6 1.4 2051.6 4.3 3.5 3rd Party - - - 0% 0% - - - - - - - - - - - - - - - - - - - Equipment Failure 71% 14% 3% 12% 6% 64% 91% 88% 68% 39% 37% - 32% 25% - 72% 71% 100% 0% 0% - 3% 8% 29% Operation 18% 36% - 15% 15% - 1% 0% - 1% 0% - 30% 40% - 26% 27% - 34% 4% - 33% 5% - Other - - 51% 42% 56% 34% 1% 0% 17% 9% 6% 100% 38% 35% 100% - - - 7% 60% 100% 7% 50% 71% Vegetation/Animal - - - 15% 4% - 1% 11% 15% - - - - - - 2% 2% - - - - 0% 0% - Weather/Fire/Earthquake 11% 50% 46% 15% 20% 2% 6% 1% - 52% 57% - - - - - - - 59% 35% - 58% 36% - 21

Reliability Histories for Individual Circuits Serving Ventura District 1-8 of 8 CircuitHistory 8 2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017 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 TICO(16KV) - Customers: 2,004 222.7 3.3 3.6 69.5 1.0 1.0 366.6 3.1 3.4 9.7 0.2-5.6 0.0-87.5 2.1 2.2 667.4 3.0 0.6 770.2 5.3 2.9 3rd Party 81% 95% 72% - - - 22% 12% 37% - - - - - - 47% 46% 56% 10% 33% - 14% 37% 44% Equipment Failure 1% 0% 28% 6% 1% - 27% 34% 45% - - - 7% 50% - - - - 0% 0% - 0% 0% - Operation 1% 1% - 0% 1% - 14% 6% - 100% 100% - - - - - - - 72% 22% 2% 64% 15% 0% Other 3% 0% - 93% 99% - 0% 0% - - - - - - - - - - 18% 45% 98% 15% 26% 21% Vegetation/Animal 1% 0% - - - 100% 0% 0% - - - - 93% 50% - - - - - - - 1% 0% - Weather/Fire/Earthquake 13% 3% - - - - 38% 48% 18% - - - - - - 53% 54% 44% - - - 6% 22% 34% VINEYARD(16KV) - Customers: 4,890 132.8 0.4 2.0 106.7 0.3-49.8 0.9 1.1 0.3 0.0 1.0 - - - 3.0 0.0-326.2 2.2 1.4 329.6 2.2 2.4 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 86% 28% - 89% 92% - 59% 5% 89% 100% 100% 100% - - - - - - 23% 41% 62% 23% 41% 78% Operation 14% 72% 50% - - - 40% 94% 11% - - - - - - 100% 100% - - - - 1% 1% - Other - - - - - - - - - - - - - - - - - - 77% 59% 38% 76% 58% 22% Vegetation/Animal - - 50% - - - 1% 1% - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 11% 8% - - - - - - - - - - - - - - - - - - - 22