Circuit Reliability Review

Circuit Reliability Review Carson 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 DOMINGUEZ HILLS District CityList1 BELL BELL GARDENS BELLFLOWER CARSON COMMERCE COMPTON CUDAHY EAST COMPTON EAST LOS ANGELES FLORENCE-GRAHAM HUNTINGTON PARK LOS ANGELES LYNWOOD MAYWOOD PARAMOUNT SOUTH GATE VERNON WALNUT PARK WEST CARSON WEST COMPTON WILLOWBROOK 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 Carson CircuitList1 There are 58 circuits that serve Carson 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers ABRI(12KV) 1,083 KEYSTONE(4.16KV) 1,456 - - ANCHOR(4.16KV) 594 MANVILLE(12KV) 111 - - BACH(12KV) 1,639 MARTIN(4.16KV) 1,388 - - BALLAST(16KV) 2,407 MCCLOUD(16KV) 423 - - BANCROFT(16KV) 117 MIGUEL(12KV) 184 - - BLIMP(16KV) 3,723 MILLPOINT(12KV) 187 - - BOLTON(16KV) 2,674 PAN AMERICAN(12KV) 20 - - BOND(12KV) 6 RAHN(16KV) 133 - - BRINE(12KV) 911 REGAL(12KV) 707 - - BURMA(16KV) 567 ROCHA(4.16KV) 1,388 - - CALM(12KV) 930 SHELL(12KV) 44 - - CASWELL(16KV) 291 SHELLDOM(12KV) 66 - - CATALYTIC(12KV) 125 SHOWCASE(16KV) 789 - - CHRIS(12KV) 1,398 SPARTON(16KV) 1,174 - - COUNTY(12KV) 7 SQUALL(12KV) 1,684 - - DENVER(12KV) 309 STARBOARD(12KV) 1,269 - - DONNA(16KV) 532 STOCCO(12KV) 111 - - DRIFT(12KV) 1,380 STORM(12KV) 3,225 - - EASY(4.16KV) 1,517 SUPERIOR(12KV) 1,939 - - EDGAR(12KV) 322 TAPER(4.16KV) 1,137 - - FIAT(4.16KV) 688 TORSON(16KV) 284 - - FRY(12KV) 54 TWINING(16KV) 122 - - GASBAG(16KV) 72 WEISER(12KV) 39 - - GULF(4.16KV) 935 WILLOW(12KV) 29 - - HANCOCK(12KV) 154 WILMINGTON(12KV) 1,153 - - HARBOR(4.16KV) 1,231 WISE(4.16KV) 1,373 - - HAYWARD(4.16KV) 943 ZAMORA(16KV) 537 - - HELIUM(16KV) 148 ZEPPELIN(16KV) 142 - - JENKINS(16KV) 1,374 - - - KERNAN(16KV) 646 - - - Grand Total 47,891 7

Reliability History of Circuits Serving Carson (No Exclusions) BarChart SAIDI (average minutes of sustained interruptions) 180.0 160.0 140.0 120.0 100.0 80.0 60.0 40.0 20.0 0.0 2014 2015 2016 2017 160.8 138.2 134.5 139.7 112.1 114.8 121.4 80.3 Carson SAIFI (average frequency of sustained interruptions) MAIFI (average frequency of momentary interruptions) 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.6 1.6 1.1 1.0 0.9 2.2 1.4 1.4 1.2 1.3 1.1 2.5 2.1 1.6 1.2 1.8 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 Carson 2017 SAIDIChart Weather /Fire /Earthquake 3.6% Vegetation /Animal 0.1% Contributions to SAIDI 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 Operation 14.1% Other 12.7% Equipment Failure 47.2% 3rd Party 22.3% 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

Causes of Repair Outages in Carson 2017 SAIFIChart Weather /Fire /Earthquake 4.6% Contributions to SAIFI by Outage Cause Vegetation /Animal 0.3% 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 Operation 18.3% Other 13.3% 3rd Party 17.6% Equipment Failure 46.0% 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

12

Back-up Slides Reliability Histories of Circuits Serving Carson Updated through Dec 2017

Average Reliability of 58 Circuits Serving Carson 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 58 Circuits Serving Carson -- Total Customers: 47,891 80.3 0.6 1.6 138.2 1.1 2.2 160.8 1.2 2.5 41.0 0.5 0.5 40.7 0.3 0.4 7.0 0.1 0.5 32.7 0.4 0.6 121.4 1.3 2.1 3rd Party 17% 10% 28% 22% 15% 26% 12% 18% 31% 3% 5% 7% 47% 37% 52% 16% 12% 11% 18% 22% 7% 22% 18% 17% Equipment Failure 58% 63% 15% 49% 47% 11% 57% 43% 14% 62% 45% 27% 16% 21% 2% 71% 79% 31% 62% 59% 17% 47% 46% 20% Operation 9% 6% 2% 22% 24% 9% 6% 7% 4% 7% 20% - 23% 31% 1% 13% 9% 5% 13% 9% 13% 14% 18% 5% Other 3% 7% 16% 5% 8% 21% 12% 18% 32% 21% 23% 49% 14% 11% 21% - - 31% 3% 4% 7% 13% 13% 27% Vegetation/Animal 5% 8% 26% 0% 0% 18% 0% 0% 3% - - 5% 0% 1% 24% - - 21% 0% 0% 54% 0% 0% 27% Weather/Fire/Earthquake 7% 6% 12% 3% 6% 15% 13% 14% 16% 7% 7% 13% - - - - - - 4% 5% 2% 4% 5% 4% 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 Carson - 1 of 15 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 ABRI(12KV) - Customers: 1,083 2.1 0.0 1.0 31.6 0.1 1.0 142.3 2.1 1.0 - - CircuitHistory - - - - - - - 88.4 1.0 1.6 88.4 1.0 1.6 3rd Party - - - - - 100% 34% 48% 100% - - 1- - - - - - - - - - - - - Equipment Failure - - - 88% 71% - 63% 50% - - - - - - - - - - 100% 100% 38% 100% 100% 38% Operation 100% 100% - 12% 29% - 3% 2% - - - - - - - - - - - - - - - - Other - - 100% - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - 62% - - 62% ANCHOR(4.16KV) - Customers: 594 43.1 0.1 1.0 - - 1.0 - - 4.1 - - - 0.8 0.0 - - - - - - - 0.8 0.0-3rd Party - - - - - 2% - - 24% - - - - - - - - - - - - - - - Equipment Failure 100% 100% 100% - - - - - - - - - 100% 100% - - - - - - - 100% 100% - Operation - - - - - 98% - - - - - - - - - - - - - - - - - - Other - - - - - - - - 76% - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - BACH(12KV) - Customers: 1,639 68.5 1.2 3.9 97.9 0.1 5.0 381.9 2.2 4.9 126.7 1.0 1.0 97.6 0.1 1.0 - - - - - 1.0 224.3 1.1 3.0 3rd Party - - - - - 40% - - 20% - - - - - - - - - - - - - - - Equipment Failure 100% 100% 26% 100% 100% - 68% 52% 39% 100% 100% - 100% 100% - - - - - - - 100% 100% - Operation - - - - - - 3% 2% 20% - - - - - - - - - - - - - - - Other - - 25% - - - 29% 47% 20% - - 100% - - 100% - - - - - - - - 67% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - 100% - - 33% Weather/Fire/Earthquake - - 50% - - 60% - - - - - - - - - - - - - - - - - - BALLAST(16KV) - Customers: 2,407 153.2 0.1 1.0 111.6 1.3 3.0 23.5 0.1 1.0 - - 1.0 124.7 1.2 1.0 - - - 89.2 0.3-213.9 1.5 2.0 3rd Party - - - - - - - - 100% - - - 0% 0% 100% - - - - - - 0% 0% 50% Equipment Failure 99% 96% - 22% 76% - 20% 20% - - - - 4% 4% - - - - 100% 100% - 44% 23% - Operation 0% 3% - 78% 24% - 80% 80% - - - - 95% 96% - - - - - - - 56% 77% - Other - - - - - 33% - - - - - 100% - - - - - - - - - - - 50% Vegetation/Animal 1% 1% 100% - - 67% - - - - - - - - - - - - - - - - - - 15

Reliability Histories for Individual Circuits Serving Carson - 2 of 15 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 BANCROFT(16KV) - Customers: 117 57.1 1.0 1.0 122.5 2.0 1.0 154.2 2.4 2.3 - - - 78.2 1.0 - - - - - - - 78.2 1.0 - Equipment Failure 100% 100% - 100% 100% - 100% 100% 56% - - - 100% 100% - - - - - - - 100% 100% - Operation - - - - - 100% - - - - - - - - - - - - - - - - - - Vegetation/Animal - - 100% - - - - - 44% - - - - - - - - - - - - - - - BLIMP(16KV) - Customers: 3,723 38.1 0.2 2.0 61.7 2.2 3.9 142.8 1.6 4.8 37.6 1.1 1.0 5.9 0.2-19.9 0.0 1.0 91.9 1.0-155.4 2.4 2.0 3rd Party - - - - - - - - 21% - - - 16% 6% - - - - - - - 1% 1% - Equipment Failure 51% 59% - 65% 52% 23% 27% 16% - 67% 8% - 3% 0% - 93% 66% 100% 94% 96% - 84% 46% 49% Operation - - - 24% 46% - 7% 3% - 33% 92% - 81% 94% - 7% 34% - - - - 12% 51% - Other - - - 12% 2% - 25% 6% 21% - - 100% - - - - - - - - - - - 51% Vegetation/Animal 6% 0% 50% - - 51% - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 43% 40% 50% - - 26% 42% 75% 58% - - - - - - - - - 6% 4% - 3% 2% - BOLTON(16KV) - Customers: 2,674 142.3 0.7 3.4 301.5 1.6 3.6 46.6 0.4 3.6 172.2 1.4 0.6 153.8 0.8 2.0 11.6 0.2 1.0 4.6 0.0-342.2 2.4 3.6 3rd Party 25% 37% 53% - - - - - 28% - - - 78% 86% 100% - - - - - - 35% 27% 55% Equipment Failure 14% 5% - 0% 0% - 4% 0% 28% 77% 69% - 3% 1% - 56% 93% 100% - - - 42% 49% 29% Operation 58% 57% 18% 81% 73% 28% 2% 4% 29% 1% 1% - 20% 13% - 44% 7% - 100% 100% - 12% 5% - Other - - - 19% 27% 72% 94% 96% 16% - - - - - - - - - - - - - - - Vegetation/Animal - - 29% - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 2% 2% - - - - - - - 22% 31% 100% - - - - - - - - - 11% 18% 16% BOND(12KV) - Customers: 6 119.7 1.0 - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 100% 100% - - - - - - - - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - 16

Reliability Histories for Individual Circuits Serving Carson - 3 of 15 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 BRINE(12KV) - Customers: 911 234.4 1.3 2.5 214.8 2.2-11.5 0.0 1.0 - - - 80.2 2.0 0.1 10.2 0.1 1.0 - - 1.0 90.5 2.1 2.1 3rd Party 86% 20% 60% 22% 8% - - - 100% - - - - - - - - - - - - - - - Equipment Failure 14% 79% - 78% 91% - - - - - - - 98% 99% 100% - - 100% - - - 87% 95% 53% Operation 0% 1% - 1% 1% - 100% 100% - - - - 2% 1% - 100% 100% - - - - 13% 5% - Other - - 40% - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - 100% - - 47% BURMA(16KV) - Customers: 567 174.4 0.8 5.6 72.1 1.0 2.0 - - 1.0 1.2 0.0 1.0 - - - - - - 9.1 0.0 1.0 10.3 0.0 2.0 3rd Party 33% 9% 17% 84% 98% - - - - - - - - - - - - - - - - - - - Equipment Failure 66% 91% 11% 16% 2% - - - 100% - - - - - - - - - 100% 100% 100% 88% 65% 49% Operation - - - - - 100% - - - 100% 100% - - - - - - - - - - 12% 35% - Other - - 36% - - - - - - - - 100% - - - - - - - - - - - 51% Vegetation/Animal - - 18% - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 1% 0% 18% - - - - - - - - - - - - - - - - - - - - - CALM(12KV) - Customers: 930 106.2 0.4 1.3 224.2 1.0-10.2 0.0 2.0 - - - - - - - - - - - 1.0 - - 1.0 3rd Party 76% 89% 100% 100% 100% - - - 50% - - - - - - - - - - - - - - - Equipment Failure 24% 11% - - - - - - - - - - - - - - - - - - - - - - Operation - - - - - - 100% 100% - - - - - - - - - - - - - - - - Other - - - 0% 0% - - - 50% - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - 100% - - 100% CASWELL(16KV) - Customers: 291 1.8 0.0-91.2 0.1 2.8 76.1 1.1 3.4 202.3 0.6 0.4 45.4 0.6 1.4 0.4 0.0 - - - - 248.1 1.2 1.8 3rd Party - - - - - - - - - - - - 100% 100% 28% - - - - - - 18% 50% 22% Equipment Failure - - - - - - 100% 100% 11% - - - - - - 100% 100% - - - - 0% 0% - Operation 100% 100% - 100% 100% 63% - - - - - - - - - - - - - - - - - - Other - - - - - - - - 30% 100% 100% 100% - - - - - - - - - 82% 50% 22% Vegetation/Animal - - - - - 37% - - 29% - - - - - 72% - - - - - - - - 57% Weather/Fire/Earthquake - - - - - - - - 30% - - - - - - - - - - - - - - - 17

Reliability Histories for Individual Circuits Serving Carson - 4 of 15 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 CATALYTIC(12KV) - Customers: 125 78.7 1.0 1.0 - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - - - - - - - - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal 100% 100% 100% - - - - - - - - - - - - - - - - - - - - - CHRIS(12KV) - Customers: 1,398 72.1 0.1 0.9 129.7 0.8 3.5 82.9 1.6 0.5 27.0 0.9-48.6 1.2 2.0 - - - 40.2 1.0 0.5 115.8 3.1 2.5 3rd Party - - - 34% 70% 71% - - - 100% 100% - 100% 100% 100% - - - - - - 65% 68% 81% Equipment Failure 100% 100% 100% 59% 23% - 96% 99% 100% - - - - - - - - - 21% 46% - 7% 15% - Operation 0% 0% - 6% 7% - 4% 1% - - - - - - - - - - - - - - - - Other - - - - - 29% - - - - - - - - - - - - 79% 54% 100% 28% 17% 19% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - COUNTY(12KV) - Customers: 7 - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - - - - - - - - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - DENVER(12KV) - Customers: 309 - - 1.0 - - 3.0 174.6 0.2 - - - 1.0 13.9 0.2 - - - 1.0 - - - 13.9 0.2 2.0 Equipment Failure - - 100% - - - 100% 100% - - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - - - - 67% - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - 33% - - - - - 100% 100% 100% - - - 100% - - - 100% 100% 100% 18

Reliability Histories for Individual Circuits Serving Carson - 5 of 15 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 DONNA(16KV) - Customers: 532 406.7 1.0 1.0 855.7 3.4-118.9 0.3 - - - - - - - - - - - - 1.0 - - 1.0 Equipment Failure 100% 100% - 85% 60% - 100% 100% - - - - - - - - - - - - - - - - Operation - - - 15% 40% - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - 100% - - 100% DRIFT(12KV) - Customers: 1,380 - - - 3.1 0.0 1.0 - - 1.0 - - - 0.7 0.0 - - - - 72.9 1.2 1.4 73.5 1.2 1.4 3rd Party - - - - - - - - 100% - - - - - - - - - - - - - - - Equipment Failure - - - 100% 100% 100% - - - - - - 100% 100% - - - - 100% 100% 29% 100% 100% 29% Operation - - - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - 71% - - 71% EASY(4.16KV) - Customers: 1,517 49.6 0.4 2.0 101.3 1.0 4.6 245.3 0.3 0.6 116.9 2.0 1.0 - - - - - 3.0 106.5 0.4 1.5 223.4 2.4 5.5 3rd Party - - 50% - - - - - - - - - - - - - - 33% - - - - - 18% Equipment Failure 100% 100% - 86% 99% 34% 98% 97% - 60% 50% - - - - - - - - - - 31% 41% - Operation - - - 14% 1% - - - - 1% 0% - - - - - - - 100% 100% 100% 48% 18% 28% Other - - 50% - - 44% - - - 39% 50% - - - - - - 33% - - - 21% 41% 18% Vegetation/Animal - - - - - 22% - - - - - - - - - - - 33% - - - - - 18% Weather/Fire/Earthquake - - - - - - 2% 3% 100% - - 100% - - - - - - - - - - - 18% EDGAR(12KV) - Customers: 322 130.8 2.0 2.0 - - - - - - - - - - - - - - - 46.8 1.0-46.8 1.0 - Equipment Failure 36% 50% - - - - - - - - - - - - - - - - 100% 100% - 100% 100% - Operation - - - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal 64% 50% 100% - - - - - - - - - - - - - - - - - - - - - 19

Reliability Histories for Individual Circuits Serving Carson - 6 of 15 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 FIAT(4.16KV) - Customers: 688 - - 2.0 3.4 0.0 1.0 6.9 0.0 3.0 0.9 0.0 1.0 - - - 7.5 0.1 - - - - 8.3 0.1 1.0 3rd Party - - 49% - - 100% - - 100% - - - - - - - - - - - - - - - Equipment Failure - - - 100% 100% - 100% 100% - - - - - - - 67% 50% - - - - 60% 40% - Operation - - - - - - - - - 100% 100% - - - - 33% 50% - - - - 40% 60% - Other - - 51% - - - - - - - - 100% - - - - - - - - - - - 100% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - FRY(12KV) - Customers: 54 90.9 0.9 - - - - - - - - - - - - - 30.0 1.0 1.0 - - - 30.0 1.0 1.0 Equipment Failure 100% 100% - - - - - - - - - - - - - 100% 100% 100% - - - 100% 100% 100% Operation - - - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - GASBAG(16KV) - Customers: 72 98.7 0.3 - - - 2.1 161.5 0.3 1.0 - - 1.0 - - - - - - - - - - - 1.0 3rd Party - - - - - - - - 100% - - - - - - - - - - - - - - - Equipment Failure 100% 100% - - - - 89% 90% - - - - - - - - - - - - - - - - Operation - - - - - - 11% 10% - - - - - - - - - - - - - - - - Other - - - - - - - - - - - 100% - - - - - - - - - - - 100% Vegetation/Animal - - - - - 100% - - - - - - - - - - - - - - - - - - GULF(4.16KV) - Customers: 935 9.1 0.0 1.0 51.8 0.6 1.4 154.4 0.7 1.0 1.1 0.0 1.0 - - - - - - - - - 1.1 0.0 1.0 3rd Party - - - 88% 96% 100% 21% 10% - 100% 100% - - - - - - - - - - 100% 100% - Equipment Failure 100% 100% - - - - 79% 90% - - - - - - - - - - - - - - - - Operation - - - 12% 4% - - - - - - - - - - - - - - - - - - - Other - - 100% - - - - - 100% - - 100% - - - - - - - - - - - 100% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - 20

Reliability Histories for Individual Circuits Serving Carson - 7 of 15 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 HANCOCK(12KV) - Customers: 154 371.0 4.0 1.0 - - - 152.8 2.0 1.0 - - - - - - - - - - - - - - - 3rd Party - - - - - - 13% 50% 100% - - - - - - - - - - - - - - - Equipment Failure 32% 24% - - - - 87% 50% - - - - - - - - - - - - - - - - Operation 8% 1% - - - - - - - - - - - - - - - - - - - - - - Other 38% 49% - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal 22% 25% 100% - - - - - - - - - - - - - - - - - - - - - HARBOR(4.16KV) - Customers: 1,231 2.4 0.0 1.0 28.8 0.0 1.0 128.0 2.1 6.9 - - - - - - - - - - - - - - - 3rd Party - - - 64% 73% 100% - - 29% - - - - - - - - - - - - - - - Equipment Failure - - 100% 36% 27% - 11% 2% - - - - - - - - - - - - - - - - Operation 100% 100% - - - - - - - - - - - - - - - - - - - - - - Other - - - - - - 89% 98% 71% - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - HAYWARD(4.16KV) - Customers: 943 84.7 1.0 2.0 51.4 1.1 3.9 207.5 2.4 0.6 - - - - - 1.0 6.9 0.0 1.0 77.1 0.7-84.0 0.7 2.0 3rd Party 80% 95% 100% - - - 32% 15% 100% - - - - - - - - - - - - - - - Equipment Failure 18% 3% - 82% 6% 24% 56% 43% - - - - - - - 100% 100% - 100% 100% - 100% 100% - Operation 2% 2% - 6% 4% 25% 12% 42% - - - - - - - - - - - - - - - - Other - - - - - - - - - - - - - - - - - 100% - - - - - 50% Vegetation/Animal - - - - - - - - - - - - - - 100% - - - - - - - - 50% Weather/Fire/Earthquake - - - 12% 91% 50% - - - - - - - - - - - - - - - - - - HELIUM(16KV) - Customers: 148 423.4 2.5 0.5 26.4 0.0 2.0 93.6 0.5 2.5 1.7 0.0 1.0 - - - - - - - - - 1.7 0.0 1.0 3rd Party - - - - - - - - 41% - - - - - - - - - - - - - - - Equipment Failure 53% 59% 100% 100% 100% - 100% 100% 20% - - - - - - - - - - - - - - - Operation - - - - - - - - - 100% 100% - - - - - - - - - - 100% 100% - Other 47% 41% - - - - - - - - - 100% - - - - - - - - - - - 100% Vegetation/Animal - - - - - 100% - - 39% - - - - - - - - - - - - - - - 21

Reliability Histories for Individual Circuits Serving Carson - 8 of 15 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 JENKINS(16KV) - Customers: 1,374 75.6 1.9 3.0 604.8 2.7 0.9 77.8 1.0 2.0 115.8 1.0 - - - - 0.6 0.0 1.0 67.8 1.0 2.0 184.3 2.0 3.0 3rd Party - - - 97% 65% 100% - - 50% - - - - - - - - - - - - - - - Equipment Failure 94% 99% 34% - - - 100% 100% - - - - - - - 100% 100% - 100% 100% - 37% 50% - Operation 5% 1% 1% - - - - - - 0% 1% - - - - - - 100% - - 50% 0% 1% 67% Other - - - 3% 35% - - - 50% 100% 99% - - - - - - - - - - 63% 50% - Vegetation/Animal 0% 0% 65% - - - - - - - - - - - - - - - - - 50% - - 33% KERNAN(16KV) - Customers: 646 89.2 1.0 2.0 38.2 1.0 2.0 253.0 3.0 3.0 71.1 1.0-1.4 0.0-13.8 0.0-61.0 1.0 1.0 147.2 2.0 1.0 3rd Party 0% 0% - 98% 100% 50% 77% 66% - - - - 100% 100% - - - - - - - 1% 0% - Equipment Failure 94% 98% - - - - 23% 33% 66% 3% 0% - - - - 100% 100% - - - - 11% 1% - Operation 4% 1% - 2% 0% 50% 1% 1% - 0% 0% - - - - - - - - - - 0% 0% - Other 1% 1% 50% - - - - - 34% - - - - - - - - - - - - - - - Vegetation/Animal - - 50% - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - - - - 97% 100% - - - - - - - 100% 100% 100% 88% 99% 100% KEYSTONE(4.16KV) - Customers: 1,456 185.5 1.1 5.8 86.4 1.0 2.0 2.0 0.0 3.0 - - 2.0 - - - - - 1.0 9.9 0.5 3.0 9.9 0.5 6.0 3rd Party 32% 10% 48% 97% 99% 100% - - 34% - - 51% - - - - - - - - - - - 17% Equipment Failure - - - 3% 0% - 100% 100% 33% - - - - - - - - - - - 67% - - 34% Operation - - - 0% 1% - - - - - - - - - - - - - 100% 100% - 100% 100% - Other - - 35% - - - - - 33% - - 49% - - - - - 100% - - 33% - - 50% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 68% 90% 17% - - - - - - - - - - - - - - - - - - - - - MANVILLE(12KV) - Customers: 111 277.8 2.0 - - - 3.0 - - 1.0 - - 1.0 - - - - - 1.0 - - - - - 2.0 Equipment Failure 98% 51% - - - - - - - - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other 2% 49% - - - 67% - - 100% - - - - - - - - - - - - - - - Vegetation/Animal - - - - - 33% - - - - - 100% - - - - - 100% - - - - - 100% 22

Reliability Histories for Individual Circuits Serving Carson - 9 of 15 CircuitHistory 9 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 MARTIN(4.16KV) - Customers: 1,388 3.6 0.0 1.0 18.6 0.0 4.0 249.5 1.0 3.0 149.2 2.0 - - - - 24.4 0.1 3.9 129.0 1.0-302.6 3.1 3.9 3rd Party - - - - - 25% - - 33% - - - - - - 100% 100% 24% 100% 100% - 51% 35% 24% Equipment Failure 65% 33% 100% 94% 61% - 97% 20% - 69% 50% - - - - - - - - - - 34% 33% - Operation 35% 67% - - - - 3% 80% - - - - - - - - - - - - - - - - Other - - - 6% 39% 50% - - 33% 31% 50% - - - - - - 51% - - - 15% 33% 51% Vegetation/Animal - - - - - 25% - - - - - - - - - - - 25% - - - - - 25% Weather/Fire/Earthquake - - - - - - - - 33% - - - - - - - - - - - - - - - MCCLOUD(16KV) - Customers: 423 227.3 3.2 4.6 66.0 1.0 1.0 121.3 3.0 1.0 46.3 1.1 - - - - 210.3 3.0 0.3 41.9 0.9 0.1 298.5 4.9 0.4 Equipment Failure 95% 99% 78% 100% 100% - 99% 100% - 100% 100% - - - - 100% 100% 100% 100% 100% 100% 100% 100% 100% Operation 5% 1% - - - 100% - - - - - - - - - - - - - - - - - - Other - - - - - - 1% 0% - - - - - - - - - - - - - - - - Vegetation/Animal - - 22% - - - - - 100% - - - - - - - - - - - - - - - MIGUEL(12KV) - Customers: 184 130.6 1.3 1.0 0.3 0.0 - - - - - - - - - - - - - - - - - - - Equipment Failure - - - - - - - - - - - - - - - - - - - - - - - - Operation 38% 21% - 100% 100% - - - - - - - - - - - - - - - - - - - Vegetation/Animal 62% 79% 100% - - - - - - - - - - - - - - - - - - - - - MILLPOINT(12KV) - Customers: 187 195.6 2.3 2.5 540.2 2.5 1.0 0.9 0.0 - - - - - - - 107.4 1.2 - - - - 107.4 1.2-3rd Party - - - - - - - - - - - - - - - 98% 100% - - - - 98% 100% - Equipment Failure 45% 43% 34% - - - - - - - - - - - - - - - - - - - - - Operation 13% 14% 27% 100% 100% 100% 100% 100% - - - - - - - 2% 0% - - - - 2% 0% - Vegetation/Animal 41% 43% 39% - - - - - - - - - - - - - - - - - - - - - 23

Reliability Histories for Individual Circuits Serving Carson - 10 of 15 2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 CircuitHistory10 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 PAN AMERICAN(12KV) - Customers: 20 - - - - - 3.0 - - - - - 1.0 - - - - - 1.0 - - - - - 2.0 Equipment Failure - - - - - - - - - - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - - - - 67% - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - 33% - - - - - 100% - - - - - 100% - - - - - 100% RAHN(16KV) - Customers: 133 15.7 0.2 2.0 135.3 1.0 3.0 1.1 0.0 1.0 - - 1.0 - - - 184.5 1.0 1.0 4.4 0.6 0.4 188.9 1.6 2.4 3rd Party - - - - - - - - - - - 100% - - - - - - - - - - - 42% Equipment Failure - - - - - - - - - - - - - - - 100% 100% 100% - - - 98% 62% 42% Operation 100% 100% - 96% 99% - 100% 100% - - - - - - - - - - - - - - - - Other - - 50% - - 67% - - 100% - - - - - - - - - - - - - - - Vegetation/Animal - - 50% 4% 1% 33% - - - - - - - - - - - - 100% 100% 100% 2% 38% 16% REGAL(12KV) - Customers: 707 27.2 0.0-11.2 0.0 3.0 461.3 1.1 - - - 1.0 - - - - - 1.0 - - - - - 2.0 3rd Party - - - - - - 0% 1% - - - - - - - - - - - - - - - - Equipment Failure - - - 52% 22% - 12% 8% - - - - - - - - - - - - - - - - Operation 100% 100% - 48% 78% - - - - - - - - - - - - - - - - - - - Other - - - - - 67% - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - 33% - - - - - 100% - - - - - 100% - - - - - 100% Weather/Fire/Earthquake - - - - - - 88% 91% - - - - - - - - - - - - - - - - ROCHA(4.16KV) - Customers: 1,388 - - 2.0 125.4 1.1 2.0 210.5 3.5 6.7 - - - 201.0 1.0 1.0 - - - - - - 201.0 1.0 1.0 3rd Party - - - 35% 2% 100% 41% 57% 15% - - - - - - - - - - - - - - - Equipment Failure - - 50% 3% 1% - - - - - - - - - - - - - - - - - - - Operation - - - 5% 8% - 47% 14% - - - - - - - - - - - - - - - - Other - - 50% 57% 88% - 12% 29% 85% - - - 100% 100% 100% - - - - - - 100% 100% 100% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - 24

Reliability Histories for Individual Circuits Serving Carson - 11 of 15 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 CircuitHistory11 SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SHELL(12KV) - Customers: 44 189.2 2.0 - - - - 20.3 0.0 - - - - - - - - - - 140.3 1.1 0.2 140.3 1.1 0.2 Equipment Failure 65% 50% - - - - 100% 100% - - - - - - - - - - 20% 2% - 20% 2% - Operation - - - - - - - - - - - - - - - - - - 80% 98% 100% 80% 98% 100% Other 35% 50% - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - SHELLDOM(12KV) - Customers: 66 268.3 2.0 2.0 551.6 1.2-273.3 1.3 - - - - - - - - - - - - - - - - Equipment Failure 70% 50% 50% 100% 100% - 32% 76% - - - - - - - - - - - - - - - - Operation - - - - - - 68% 24% - - - - - - - - - - - - - - - - Vegetation/Animal 30% 50% 50% - - - - - - - - - - - - - - - - - - - - - SHOWCASE(16KV) - Customers: 789 - - 1.0 0.7 0.0 1.0 651.3 2.2 2.0 - - - 0.9 0.0 - - - - 88.1 1.0-89.0 1.0-3rd Party - - - - - - - - - - - - - - - - - - 100% 100% - 99% 100% - Equipment Failure - - - - - - 100% 99% 100% - - - 100% 100% - - - - - - - 1% 0% - Operation - - - 100% 100% 100% 0% 1% - - - - - - - - - - - - - - - - Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - - - - - SPARTON(16KV) - Customers: 1,174 39.5 1.0 1.0 101.9 1.6 1.6 289.0 2.2 1.4 8.4 0.0-4.3 0.1-16.1 0.0 - - - 1.0 28.9 0.1 1.0 Equipment Failure 100% 100% - 96% 99% 100% 63% 85% 29% - - - - - - 96% 71% - - - - 54% 19% - Operation - - - 4% 1% - 32% 14% - 100% 100% - 100% 100% - 4% 29% - - - - 46% 81% - Other - - - - - - 5% 1% 71% - - - - - - - - - - - - - - - Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - 100% - - 100% 25

Reliability Histories for Individual Circuits Serving Carson - 12 of 15 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 CircuitHistory12 SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SQUALL(12KV) - Customers: 1,684 3.6 0.0-94.5 0.1-16.3 0.1 3.0 1.4 0.0-6.9 0.0-0.0 0.0 - - - 1.0 8.3 0.0 1.0 3rd Party 100% 100% - - - - - - 34% - - - - - - - - - - - - - - - Equipment Failure - - - 96% 87% - 0% 1% - - - - - - - - - - - - - - - - Operation - - - 4% 13% - 31% 58% - 100% 100% - 100% 100% - 100% 100% - - - - 100% 100% - Other - - - - - - - - 33% - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - 69% 42% 33% - - - - - - - - - - - 100% - - 100% STARBOARD(12KV) - Customers: 1,269 - - - 4.2 0.0-86.5 1.2 3.0 - - - - - 1.0 1.3 0.0 - - - 1.0 1.3 0.0 2.0 3rd Party - - - - - - 13% 9% 33% - - - - - - 100% 100% - - - - 100% 100% - Equipment Failure - - - 43% 26% - 61% 5% - - - - - - - - - - - - - - - - Operation - - - 57% 74% - - - - - - - - - - - - - - - - - - - Other - - - - - - 26% 85% 67% - - - - - 100% - - - - - - - - 50% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - 100% - - 50% STOCCO(12KV) - Customers: 111 139.6 1.1 3.0 - - - - - - - - - - - - - - - - - - - - - Equipment Failure 10% 5% - - - - - - - - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other 31% 6% - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal 59% 89% 100% - - - - - - - - - - - - - - - - - - - - - STORM(12KV) - Customers: 3,225 91.4 1.1 0.0 213.9 1.8 2.3 306.3 3.0 2.1 1.1 0.0-11.9 0.0 - - - - 0.8 0.0 1.0 13.7 0.0 1.0 3rd Party - - - 0% 1% 44% 27% 34% 47% - - - - - - - - - - - - - - - Equipment Failure 92% 97% 100% 67% 43% 11% 26% 40% 41% 100% 100% - - - - - - - - - - 8% 8% - Operation 8% 3% - 32% 57% - 3% 1% - - - - 100% 100% - - - - 100% 100% - 92% 92% - Other - - - 1% 0% - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - 100% - - 100% Weather/Fire/Earthquake - - - 0% 0% 44% 44% 25% 12% - - - - - - - - - - - - - - - 26

Reliability Histories for Individual Circuits Serving Carson - 13 of 15 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 CircuitHistory13 SAIFI MAIFI SAIDI SAIFI MAIFI SUPERIOR(12KV) - Customers: 1,939 141.1 0.2 1.0 140.1 2.0-336.8 1.5 0.6 - - - - - 1.0 - - - 16.4 1.0 1.0 16.4 1.0 2.0 3rd Party - - 100% - - - 35% 48% 50% - - - - - - - - - 100% 100% 100% 100% 100% 50% Equipment Failure 100% 100% - 99% 100% - 29% 5% - - - - - - - - - - - - - - - - Operation - - - 0% 0% - 0% 0% - - - - - - - - - - - - - - - - Other - - - 0% 0% - 36% 47% 50% - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - 100% - - - - - - - - 50% TAPER(4.16KV) - Customers: 1,137 33.1 0.1 1.0 143.1 2.0 4.0 477.2 1.1 4.8 122.1 2.0 3.7 442.8 1.0 1.0 9.9 0.0 1.0 25.6 0.6-600.5 3.7 5.7 3rd Party - - 100% - - 25% - - 62% - - - 100% 100% - - - - - - - 74% 27% - Equipment Failure 74% 41% - - - - 86% 93% - 82% 50% 100% - - - - - - 52% 85% - 19% 42% 65% Operation 26% 59% - - - 25% - - - 18% 50% - - - - 100% 100% - 40% 13% - 7% 31% - Other - - - - - - - - - - - - - - - - - 100% 8% 2% - 0% 0% 17% Vegetation/Animal - - - - - - - - - - - - - - 100% - - - - - - - - 18% Weather/Fire/Earthquake - - - 100% 100% 50% 14% 7% 38% - - - - - - - - - - - - - - - TORSON(16KV) - Customers: 284 287.4 1.1 1.0 245.1 1.8 - - - - - - - 114.8 1.0 0.8 - - 1.0 - - 1.0 114.8 1.0 2.8 Equipment Failure 90% 92% 1% 100% 100% - - - - - - - 100% 100% 100% - - 100% - - - 100% 100% 65% Operation 10% 8% - 0% 0% - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - 99% - - - - - - - - - - - - - - - - - 100% - - 35% TWINING(16KV) - Customers: 122 551.0 2.0 3.8 434.0 2.0 1.1 391.9 2.4 1.0 9.0 0.0 - - - 1.0 - - - 50.0 1.0-58.9 1.0 1.0 3rd Party 90% 50% - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 10% 50% 47% 100% 100% 9% 94% 90% 100% - - - - - - - - - - - - - - - Operation - - - - - 91% 6% 10% - 100% 100% - - - 100% - - - - - - 15% 4% 100% Vegetation/Animal - - 53% - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - 100% 100% - 85% 96% - 27

Reliability Histories for Individual Circuits Serving Carson - 14 of 15 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 CircuitHistory14 SAIFI MAIFI SAIDI SAIFI MAIFI WEISER(12KV) - Customers: 39 112.6 1.8 1.0 - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - - - - - - - - - - - - - - - - - - - - - - Operation 28% 46% - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal 72% 54% 100% - - - - - - - - - - - - - - - - - - - - - WILLOW(12KV) - Customers: 29 - - - 200.4 0.2 0.9 58.7 2.0-411.3 0.4 - - - - - - - - - - 411.3 0.4-3rd Party - - - - - - 68% 51% - 95% 73% - - - - - - - - - - 95% 73% - Equipment Failure - - - 69% 43% 100% 32% 49% - - - - - - - - - - - - - - - - Operation - - - 31% 57% - - - - 5% 27% - - - - - - - - - - 5% 27% - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - WILMINGTON(12KV) - Customers: 1,153 81.2 1.0 1.0 11.8 0.0-19.1 0.4 2.7 92.3 1.0 2.0 - - - - - - - - - 92.3 1.0 2.0 Equipment Failure - - - 64% 25% - 86% 94% 25% 77% 98% 100% - - - - - - - - - 77% 98% 100% Operation - - - - - - 14% 6% - 23% 2% - - - - - - - - - - 23% 2% - Other - - - - - - - - 38% - - - - - - - - - - - - - - - Vegetation/Animal 100% 100% 100% 36% 75% - - - 38% - - - - - - - - - - - - - - - WISE(4.16KV) - Customers: 1,373 50.1 1.0 2.0 571.7 2.3 5.2 291.0 0.7 2.8 126.0 2.0 - - - - - - 1.0 - - - 126.0 2.0 1.0 3rd Party - - 100% 0% 0% 38% - - - - - - - - - - - - - - - - - - Equipment Failure - - - 99% 99% 4% 100% 99% 28% 55% 49% - - - - - - - - - - 55% 49% - Operation 18% 5% - 1% 1% - 0% 1% - 8% 2% - - - - - - - - - - 8% 2% - Other 82% 95% - - - 38% - - - 37% 49% - - - - - - - - - - 37% 49% - Vegetation/Animal - - - - - 19% - - - - - - - - - - - 100% - - - - - 100% Weather/Fire/Earthquake - - - - - - - - 72% - - - - - - - - - - - - - - - 28

Reliability Histories for Individual Circuits Serving Carson - 15 of 15 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 CircuitHistory15 SAIFI MAIFI SAIDI SAIFI MAIFI ZAMORA(16KV) - Customers: 537 85.8 2.1 0.4 - - 1.0 34.1 0.1 - - - - 29.2 0.2 1.0 - - - - - - 29.2 0.2 1.0 Equipment Failure 100% 100% - - - - 92% 47% - - - - 100% 100% - - - - - - - 100% 100% - Operation 0% 0% - - - 100% - - - - - - - - - - - - - - - - - - Other - - - - - - 8% 53% - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - 100% - - - - - - - - 100% Weather/Fire/Earthquake - - 100% - - - - - - - - - - - - - - - - - - - - - ZEPPELIN(16KV) - Customers: 142 302.4 2.0 - - - 2.0 194.4 1.7 1.3 - - 1.0 - - - - - - - - - - - 1.0 3rd Party 100% 100% - - - - - - 76% - - - - - - - - - - - - - - - Equipment Failure - - - - - - 100% 100% 24% - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - - - - - - - - - - 100% - - - - - - - - - - - 100% Vegetation/Animal - - - - - 100% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 29