Circuit Reliability Review

Circuit Reliability Review Compton 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 Compton CircuitList1 There are 51 circuits that serve Compton 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers ADA(4.16KV) 1,101 PATTIE(4.16KV) 990 - - AGNES(4.16KV) 814 PEACH(16KV) 503 - - ANTWERP(4.16KV) 893 PENROSE(16KV) 1,833 - - ANZAC(4.16KV) 1,016 PLUM(4.16KV) 1,181 - - ATLANTIC(16KV) 2,864 RAYBORN(4.16KV) 1,475 - - BALLAST(16KV) 2,407 SHOWCASE(16KV) 789 - - BANCROFT(16KV) 117 SLOAN(4.16KV) 794 - - BOLAND(4.16KV) 1,245 STITZER(12KV) 3,031 - - BOLTON(16KV) 2,674 STOCKWELL(4.16KV) 1,463 - - BURMA(16KV) 567 TAPER(4.16KV) 1,137 - - CHARITY(4.16KV) 813 TICHENOR(16KV) 1,252 - - COLYER(16KV) 2,040 TORSON(16KV) 284 - - CRANE(4.16KV) 1,559 TROCHU(16KV) 1,947 - - DONNA(16KV) 532 TUCKER(4.16KV) 772 - - EPSILON(16KV) 128 TWINING(16KV) 122 - - FIR(4.16KV) 1,104 WARD(4.16KV) 957 - - GIBSON(16KV) 540 WHITE(4.16KV) 817 - - GLENCOE(4.16KV) 1,208 WILDCAT(16KV) 1,665 - - GUNLOCK(4.16KV) 1,098 WINONA(16KV) 1,397 - - HAYWARD(4.16KV) 943 ZAMORA(16KV) 537 - - HUB CITY(16KV) 1,712 ZENO(16KV) 91 - - JENKINS(16KV) 1,374 - - - KENWOOD(16KV) 1,280 - - - KERNAN(16KV) 646 - - - LANTANA(16KV) 789 - - - MAYO(16KV) 493 - - - MCCLOUD(16KV) 423 - - - MCKINLEY(4.16KV) 983 - - - MURIEL(4.16KV) 998 - - - NESTOR(4.16KV) 1,429 - - - Grand Total 56,827 7

Reliability History of Circuits Serving Compton (No Exclusions) BarChart SAIDI (average minutes of sustained interruptions) 250.0 200.0 150.0 100.0 50.0 0.0 2014 2015 2016 2017 204.6 153.4 165.7 134.5 139.7 112.1 114.8 89.8 Compton SAIFI (average frequency of sustained interruptions) MAIFI (average frequency of momentary interruptions) 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.7 2.1 1.1 1.0 0.9 2.5 1.4 1.4 1.4 3.1 1.1 1.6 1.2 2.7 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 Compton 2017 SAIDIChart Vegetation /Animal 1.8% Weather /Fire /Earthquake 4.9% 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 13.1% Other 6.9% 3rd Party 15.1% Equipment Failure 58.2% 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

Causes of Repair Outages in Compton 2017 SAIFIChart Vegetation /Animal 4.4% Weather /Fire /Earthquake 4.2% Contributions to SAIFI by Outage Cause 3rd Party 11.7% 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 Other 6.3% Operation 16.9% Equipment Failure 56.5% 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 Compton Updated through Dec 2017

Average Reliability of 51 Circuits Serving Compton 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 51 Circuits Serving Compton -- Total Customers: 56,827 89.8 0.7 2.1 153.4 1.1 2.5 204.6 1.4 3.1 74.3 0.4 0.5 40.8 0.3 0.9 18.3 0.3 0.8 32.3 0.2 0.5 165.7 1.2 2.7 3rd Party 16% 32% 38% 21% 20% 27% 15% 23% 24% 0% 1% 31% 40% 21% 31% 38% 23% 36% 4% 6% 15% 15% 12% 30% Equipment Failure 58% 43% 17% 43% 35% 16% 54% 46% 37% 84% 76% 23% 34% 43% 10% 46% 53% 14% 37% 45% 14% 58% 56% 14% Operation 13% 6% 5% 18% 14% 13% 3% 6% 2% 2% 7% 3% 19% 22% 0% 12% 19% 5% 30% 24% 6% 13% 17% 3% Other 10% 14% 27% 11% 14% 20% 21% 18% 25% 4% 7% 37% 5% 7% 28% 3% 0% 32% 18% 11% 31% 7% 6% 32% Vegetation/Animal 1% 2% 10% 4% 5% 11% 1% 0% 8% - - - 0% 6% 28% 1% 4% 13% 8% 9% 32% 2% 4% 19% Weather/Fire/Earthquake 1% 3% 2% 3% 11% 12% 6% 6% 4% 10% 9% 5% 1% 0% 4% - - - 2% 6% 2% 5% 4% 3% 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 Compton - 1 of 13 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 ADA(4.16KV) - Customers: 1,101 39.1 0.1 5.0 6.9 0.1 4.0 97.9 1.1 10.1 16.5 0.0 CircuitHistory 2.0 119.7 1.0 7.0 - - 1.0 - - - 136.2 1.1 10.0 3rd Party 67% 74% 60% - - - - - 20% - - 1- - - 14% - - 100% - - - - - 20% Equipment Failure 28% 15% - - - 25% 96% 95% 51% 100% 100% 50% - - - - - - - - - 12% 4% 10% Operation 5% 12% - 100% 100% - 4% 5% - - - - 11% 4% - - - - - - - 10% 4% - Other - - 40% - - 75% - - 30% - - 50% 89% 96% 86% - - - - - - 78% 92% 70% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - AGNES(4.16KV) - Customers: 814 36.9 0.1-4.7 0.0 - - - - 3.5 0.0 - - - 1.0 - - 1.0 0.2 0.0 1.0 3.7 0.0 3.0 3rd Party - - - - - - - - - - - - - - 100% - - 100% - - - - - 67% Equipment Failure - - - - - - - - - - - - - - - - - - - - - - - - Operation - - - 100% 100% - - - - 100% 100% - - - - - - - 100% 100% - 100% 100% - Other 100% 100% - - - - - - - - - - - - - - - - - - 100% - - 33% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - ANTWERP(4.16KV) - Customers: 893 129.8 2.0 5.0 43.9 0.1 4.0 1134.8 1.5 7.0 - - 1.0 - - 1.0 - - - - - - - - 2.0 3rd Party - - 20% - - 25% - - 29% - - 100% - - - - - - - - - - - 50% Equipment Failure 65% 50% 20% - - 75% 100% 100% 28% - - - - - - - - - - - - - - - Operation - - - 15% 27% - - - - - - - - - - - - - - - - - - - Other 35% 50% 60% 85% 73% - - - 29% - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - 14% - - - - - 100% - - - - - - - - 50% ANZAC(4.16KV) - Customers: 1,016 140.9 2.0 6.0 63.3 1.0 4.0 8.2 0.0 5.9 - - 1.0 - - 1.0 - - - - - 1.0 - - 3.0 3rd Party - - 17% - - 25% - - 17% - - 100% - - - - - - - - 100% - - 67% Equipment Failure 61% 50% 17% 96% 98% 75% 100% 100% 33% - - - - - - - - - - - - - - - Operation - - - 4% 2% - - - - - - - - - - - - - - - - - - - Other 1% 0% 50% - - - - - 34% - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - 17% - - - - - 100% - - - - - - - - 33% Weather/Fire/Earthquake 38% 50% 16% - - - - - - - - - - - - - - - - - - - - - 15

Reliability Histories for Individual Circuits Serving Compton - 2 of 13 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 ATLANTIC(16KV) - Customers: 2,864 49.0 1.0 2.0 4.1 0.0 1.0 413.0 1.9 3.0 8.4 0.1 1.9 15.2 0.0 1.0 38.4 1.0-85.3 0.1 0.9 147.4 1.2 3.8 3rd Party 95% 99% 50% - - - - - - 61% 59% 49% 100% 100% - - - - - - - 14% 7% 25% Equipment Failure 3% 0% - 41% 80% - 41% 54% 65% - - - - - - 100% 100% - - - - 26% 81% - Operation 2% 0% - - - - 2% 6% - - - - - - - - - - - - - - - - Other - - 50% 59% 20% - 53% 40% 35% 39% 41% 51% - - 100% - - - 100% 100% 100% 60% 11% 75% Vegetation/Animal - - - - - - 4% 0% - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - 100% - - - - - - - - - - - - - - - - - - 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% - - - - - - - - - - - - - - - - - - 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 1.0-3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 100% 100% - 100% 100% - 100% 100% 56% - - - 100% 100% - - - - - - - 100% 100% - Operation - - - - - 100% - - - - - - - - - - - - - - - - - - Other - - - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - 100% - - - - - 44% - - - - - - - - - - - - - - - BOLAND(4.16KV) - Customers: 1,245 1.2 0.0 1.0 147.9 3.0 4.0 0.3 0.0-0.2 0.0-11.8 0.0 2.0 10.6 0.0 - - - - 22.6 0.1 2.0 3rd Party 100% 100% 100% 54% 33% - - - - - - - - - - - - - - - - - - - Equipment Failure - - - 4% 0% - - - - 100% 100% - - - 50% 95% 30% - - - - 45% 26% 50% Operation - - - - - 25% 100% 100% - - - - 100% 100% - 5% 70% - - - - 55% 74% - Other - - - 39% 33% 25% - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - 50% - - - - - - - - 50% Weather/Fire/Earthquake - - - 4% 33% 50% - - - - - - - - - - - - - - - - - - 16

Reliability Histories for Individual Circuits Serving Compton - 3 of 13 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 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% 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% - - - - - - - - - - - - - - - - - - - - - CHARITY(4.16KV) - Customers: 813 - - - 613.7 2.0 2.0 57.4 1.0 2.0 - - - - - - 5.2 0.0 5.0 - - - 5.2 0.0 5.0 3rd Party - - - - - 49% - - - - - - - - - - - 20% - - - - - 20% Equipment Failure - - - 94% 50% - - - - - - - - - - 100% 100% - - - - 100% 100% - Operation - - - 0% 1% 51% 100% 100% 2% - - - - - - - - 20% - - - - - 20% Other - - - 6% 50% - - - 98% - - - - - - - - 40% - - - - - 40% Vegetation/Animal - - - - - - - - - - - - - - - - - 20% - - - - - 20% COLYER(16KV) - Customers: 2,040 107.9 0.9 2.2 157.7 0.9 2.9 636.8 4.9 4.1 62.1 1.0-8.8 0.0-18.2 0.3 1.0 - - - 89.2 1.4 1.0 3rd Party - - 47% 65% 15% 65% 14% 20% 47% - - - - - - 29% 3% 100% - - - 6% 1% 100% Equipment Failure 100% 100% 53% 34% 84% - 53% 60% 29% 87% 99% - - - - 4% 2% - - - - 61% 74% - Operation - - - 1% 1% - 0% 0% - 13% 1% - 100% 100% - 68% 95% - - - - 33% 25% - Other - - - - - - 33% 20% 24% - - - - - - - - - - - - - - - Vegetation/Animal - - - - - 35% - - - - - - - - - - - - - - - - - - 17

Reliability Histories for Individual Circuits Serving Compton - 4 of 13 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 CRANE(4.16KV) - Customers: 1,559 19.0 1.2 4.0 15.5 0.0 3.0 554.3 3.5 15.3 270.0 1.0 - - - - 62.5 0.2 1.8 - - - 332.6 1.2 1.8 3rd Party 32% 87% 25% - - 33% - - 13% - - - - - - 99% 100% 100% - - - 19% 19% 100% Equipment Failure 68% 13% 25% 86% 18% 33% 50% 42% 54% 100% 99% - - - - - - - - - - 81% 81% - Operation - - 25% 14% 82% - 0% 0% - 0% 1% - - - - 1% 0% - - - - 0% 1% - Other - - 25% - - 34% 9% 29% 26% - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - 40% 29% 7% - - - - - - - - - - - - - - - DONNA(16KV) - Customers: 532 406.7 1.0 1.0 855.7 3.4-118.9 0.3 - - - - - - - - - - - - 1.0 - - 1.0 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 100% 100% - 85% 60% - 100% 100% - - - - - - - - - - - - - - - - Operation - - - 15% 40% - - - - - - - - - - - - - - - - - - - Other - - - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - 100% - - 100% EPSILON(16KV) - Customers: 128 506.5 1.7 2.3 45.4 1.0 0.0 439.0 1.5 1.5 11.7 0.0 1.0 57.3 1.3 1.7 - - - 2.7 0.3 0.7 71.8 1.7 3.3 3rd Party 4% 60% 29% 100% 100% 100% 72% 89% 44% - - - - - - - - - - - - - - - Equipment Failure 5% 20% 29% - - - 28% 10% 56% 100% 100% 100% 73% 76% 60% - - - - - - 74% 61% 59% Operation 91% 20% - - - - 0% 1% - - - - - - - - - - - - - - - - Other - - - - - - - - - - - - 27% 24% 40% - - - - - - 22% 19% 20% Vegetation/Animal - - 43% - - - - - - - - - - - - - - - 100% 100% 100% 4% 20% 21% FIR(4.16KV) - Customers: 1,104 65.4 1.1 3.0 328.9 1.3 0.8 14.1 1.1 1.0 237.6 0.1 - - - - - - - - - 1.0 237.6 0.1 1.0 3rd Party 71% 94% - - - - - - - - - - - - - - - - - - 100% - - 100% Equipment Failure 10% 2% 33% 100% 100% 100% - - - - - - - - - - - - - - - - - - Operation 18% 4% - - - - 55% 3% - - - - - - - - - - - - - - - - Other - - 67% - - - 45% 97% - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - 100% - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - - - - 100% 100% - - - - - - - - - - 100% 100% - 18

Reliability Histories for Individual Circuits Serving Compton - 5 of 13 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 GIBSON(16KV) - Customers: 540 - - - 4.3 0.0 1.0 246.3 1.2 2.0 - - - - - - - - 1.0 - - - - - 1.0 3rd Party - - - - - - - - - - - - - - - - - 100% - - - - - 100% Equipment Failure - - - - - - 100% 100% 50% - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - - - - - - - 50% - - - - - - - - - - - - - - - Vegetation/Animal - - - 100% 100% 100% - - - - - - - - - - - - - - - - - - GLENCOE(4.16KV) - Customers: 1,208 10.2 0.0 3.0 16.4 0.1 2.0 71.8 1.0 1.0 2.3 0.0 1.1 0.8 0.0 - - - 3.0 - - - 3.1 0.0 4.0 3rd Party - - 100% - - 100% 97% 98% - - - 100% - - - - - - - - - - - 26% Equipment Failure 100% 100% - 19% 21% - - - - - - - - - - - - - - - - - - - Operation - - - 81% 79% - 3% 2% - 100% 100% - 100% 100% - - - - - - - 100% 100% - Other - - - - - - - - 100% - - - - - - - - 67% - - - - - 49% Vegetation/Animal - - - - - - - - - - - - - - - - - 33% - - - - - 25% GUNLOCK(4.16KV) - Customers: 1,098 140.7 1.1 1.0 55.1 1.0 2.0 - - 7.0 301.8 0.9 2.0 - - - 6.1 0.0-1.1 0.0-309.1 1.0 2.0 3rd Party 3% 5% 100% 91% 99% 50% - - 71% 0% 2% 100% - - - - - - - - - 0% 2% 100% Equipment Failure 3% 2% - 9% 1% 50% - - 29% 96% 96% - - - - - - - - - - 94% 90% - Operation - - - - - - - - - 3% 2% - - - - 100% 100% - 100% 100% - 6% 8% - Other 94% 93% - - - - - - - - - - - - - - - - - - - - - - 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% - - - - - - - - - - - - - - - - - - 19

Reliability Histories for Individual Circuits Serving Compton - 6 of 13 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 HUB CITY(16KV) - Customers: 1,712 24.5 0.3 1.0 6.7 0.1 2.0 119.8 1.7 3.0 - - - - - 1.0 59.8 1.0 1.0 153.7 0.6 0.8 213.6 1.6 2.8 3rd Party 90% 96% 100% 21% 15% - - - - - - - - - - 89% 99% 100% - - - 25% 62% 35% Equipment Failure - - - - - - 97% 98% 33% - - - - - - 11% 1% - 79% 60% - 60% 23% - Operation 10% 4% - 79% 85% 50% 3% 2% - - - - - - - - - - 19% 34% - 14% 13% - Other - - - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - 50% - - 67% - - - - - 100% - - - 1% 6% 100% 1% 2% 65% 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% KENWOOD(16KV) - Customers: 1,280 6.9 0.0 1.0 9.3 0.0 2.0 59.3 0.7 2.4 1.9 0.0 - - - - 11.3 0.1 - - - - 13.3 0.1-3rd Party - - - - - - - - 42% - - - - - - - - - - - - - - - Equipment Failure 76% 83% - - - - 7% 0% 42% 100% 100% - - - - 68% 65% - - - - 73% 69% - Operation 24% 17% - - - - 2% 0% - - - - - - - - - - - - - - - - Other - - 100% - - 50% 24% 7% - - - - - - - - - - - - - - - - Vegetation/Animal - - - 100% 100% 50% - - - - - - - - - 32% 35% - - - - 27% 31% - Weather/Fire/Earthquake - - - - - - 67% 93% 16% - - - - - - - - - - - - - - - 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% 20

Reliability Histories for Individual Circuits Serving Compton - 7 of 13 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 LANTANA(16KV) - Customers: 789 - - 1.0 762.0 1.9 2.5 62.6 0.1 1.0 15.8 0.0-82.0 1.2 0.4 - - - - - - 97.8 1.2 0.4 3rd Party - - 100% 23% 54% 32% - - 100% - - - 91% 46% - - - - - - - 76% 46% - Equipment Failure - - - - - - 99% 98% - 100% 100% - - - - - - - - - - 16% 1% - Operation - - - 1% 2% 40% 1% 2% - - - - - - - - - - - - - - - - Other - - - 58% 30% - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - 9% 54% 100% - - - - - - 8% 53% 100% Weather/Fire/Earthquake - - - 18% 14% 29% - - - - - - - - - - - - - - - - - - MAYO(16KV) - Customers: 493 134.9 2.0 1.9 - - - 74.0 1.1 3.0 8.8 0.0 - - - - - - - - - - 8.8 0.0-3rd Party - - 53% - - - - - - - - - - - - - - - - - - - - - Equipment Failure 77% 50% 47% - - - 97% 100% 66% 100% 100% - - - - - - - - - - 100% 100% - Operation - - - - - - 3% 0% - - - - - - - - - - - - - - - - Other 23% 50% - - - - - - 34% - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - 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 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - 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% - - - - - - - - - - - - - - - MCKINLEY(4.16KV) - Customers: 983 66.6 0.6 0.5 151.4 2.5 5.7 323.6 3.2 2.4 1032.1 3.6 1.2 14.6 0.6 0.4 35.1 0.1 - - - - 1081.8 4.3 1.7 3rd Party 100% 100% 100% 71% 10% 13% 11% 33% 41% - - - - - - - - - - - - - - - Equipment Failure - - - 16% 41% - 67% 36% 18% 100% 100% 100% 35% 1% - - - - - - - 96% 85% 74% Operation - - - 8% 7% 18% 22% 32% - - - - 34% 6% - - - - - - - 0% 1% - Other - - - 1% 2% 34% - - 41% - - - - - - 100% 100% - - - - 3% 1% - Vegetation/Animal - - - - - - - - - - - - 31% 93% 100% - - - - - - 0% 13% 26% Weather/Fire/Earthquake - - - 4% 40% 35% - - - - - - - - - - - - - - - - - - 21

Reliability Histories for Individual Circuits Serving Compton - 8 of 13 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 MURIEL(4.16KV) - Customers: 998 - - - - - - 0.8 0.0 1.0 - - 2.0 - - - - - 3.0 - - - - - 5.0 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - - - - - - - - - - - - - - - - - - - - - - Operation - - - - - - 100% 100% - - - 50% - - - - - - - - - - - 20% Other - - - - - - - - 100% - - 50% - - - - - 67% - - - - - 60% Vegetation/Animal - - - - - - - - - - - - - - - - - 33% - - - - - 20% NESTOR(4.16KV) - Customers: 1,429 62.3 1.0 3.0 90.5 2.2 4.0 345.7 1.1 2.0 325.7 1.7-6.0 0.3 4.0 - - - - - - 331.7 2.0 4.0 3rd Party 90% 98% 66% - - 25% 20% 58% - - - - - - 25% - - - - - - - - 25% Equipment Failure 10% 2% - 77% 46% - 80% 42% - 100% 100% - - - - - - - - - - 98% 86% - Operation - - - 17% 7% 25% - - - - - - 100% 100% - - - - - - - 2% 14% - Other - - 34% - - - - - 100% - - - - - 50% - - - - - - - - 50% Vegetation/Animal - - - - - - - - - - - - - - 25% - - - - - - - - 25% Weather/Fire/Earthquake - - - 7% 47% 50% - - - - - - - - - - - - - - - - - - PATTIE(4.16KV) - Customers: 990 2.3 0.0 - - - 2.0 81.6 0.3 2.0 - - - - - - - - 1.0 - - - - - 1.0 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 100% 100% - - - - 62% 64% - - - - - - - - - - - - - - - - Operation - - - - - - 27% 25% - - - - - - - - - - - - - - - - Other - - - - - 50% 11% 12% 100% - - - - - - - - 100% - - - - - 100% Vegetation/Animal - - - - - 50% - - - - - - - - - - - - - - - - - - PEACH(16KV) - Customers: 503 0.1 0.0 2.4 148.9 2.2 4.8 1034.9 4.0 6.0 - - - 0.3 0.0 - - - 1.0 18.0 0.4 1.6 18.3 0.4 2.6 3rd Party - - - - - - - - 11% - - - - - - - - - - - - - - - Equipment Failure - - 57% 50% 69% 52% 26% 71% 44% - - - 100% 100% - - - - - - 61% 2% 1% 38% Operation 100% 100% - 5% 1% - - - - - - - - - - - - - - - - - - - Other - - 43% 45% 30% 27% 71% 28% 11% - - - - - - - - 100% - - - - - 38% Vegetation/Animal - - - - - 21% - - 34% - - - - - - - - - 100% 100% 39% 98% 99% 24% Weather/Fire/Earthquake - - - - - - 3% 1% - - - - - - - - - - - - - - - - 22

Reliability Histories for Individual Circuits Serving Compton - 9 of 13 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 PENROSE(16KV) - Customers: 1,833 103.3 0.6 0.5 69.5 1.7 3.5 343.2 2.2 3.9 6.0 0.1-103.4 0.1 2.0 - - - 79.4 0.7 4.3 188.9 0.9 6.3 3rd Party 58% 82% 100% 82% 42% 14% 74% 93% 51% - - - - - - - - - - - 23% - - 16% Equipment Failure - - - 5% 0% - - - - - - - 100% 100% - - - - - - 23% 55% 16% 16% Operation 38% 11% - - - 29% 6% 3% - 100% 100% - - - - - - - 8% 33% - 7% 32% - Other 4% 7% - 4% 0% - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - 9% 57% 28% 20% 4% 49% - - - - - 50% - - - 92% 67% 54% 39% 52% 53% Weather/Fire/Earthquake - - - - - 29% - - - - - - - - 50% - - - - - - - - 16% PLUM(4.16KV) - Customers: 1,181 184.8 3.3 6.9 394.5 3.8 9.8 74.0 1.1 6.0 21.9 0.1 1.0 - - 1.0 164.7 1.0 1.8 1.2 0.0 1.0 187.9 1.1 4.8 3rd Party 22% 31% 29% 35% 53% 39% 79% 88% 17% - - 100% - - - 100% 100% 100% - - - 88% 92% 58% Equipment Failure 52% 32% 15% 21% 8% 31% - - 33% - - - - - - - - - 100% 100% - 1% 1% - Operation 20% 7% 13% 27% 13% - 21% 12% - 100% 100% - - - - - - - - - - 12% 8% - Other 6% 31% 43% 17% 27% 31% - - 33% - - - - - - - - - - - 100% - - 21% Vegetation/Animal - - - - - - - - 17% - - - - - 100% - - - - - - - - 21% RAYBORN(4.16KV) - Customers: 1,475 492.3 0.5 3.0 2.5 0.0 2.0 83.1 0.9 2.1 - - - 240.4 1.0 2.0 4.2 0.0 2.0 - - 1.0 244.5 1.0 5.0 3rd Party - - - - - 50% - - - - - - - - 50% - - 100% - - - - - 60% Equipment Failure 97% 94% - - - - 62% 51% 26% - - - 100% 100% 50% - - - - - - 98% 98% 20% Operation 2% 4% - 100% 100% - - - - - - - - - - 100% 100% - - - - 2% 2% - Other 2% 2% 100% - - 50% - - 48% - - - - - - - - - - - 100% - - 20% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - 38% 49% 26% - - - - - - - - - - - - - - - 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% - - - - - - - - - - - - - - - - Other - - - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - - - - - 23

Reliability Histories for Individual Circuits Serving Compton - 10 of 13 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 SLOAN(4.16KV) - Customers: 794 48.3 1.0 6.0 11.9 0.1 1.0 5.5 0.0 1.0 - - - 7.5 0.0-9.9 0.0 1.0 - - - 17.4 0.1 1.0 3rd Party - - 33% - - 100% - - - - - - - - - - - 100% - - - - - 100% Equipment Failure - - - - - - - - 100% - - - - - - - - - - - - - - - Operation - - - 100% 100% - 100% 100% - - - - 100% 100% - 100% 100% - - - - 100% 100% - Other 100% 100% 50% - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - 17% - - - - - - - - - - - - - - - - - - - - - STITZER(12KV) - Customers: 3,031 60.2 0.1-39.1 0.1 0.9 162.0 2.5 1.6 0.8 0.0-34.2 1.4 1.6 2.6 0.0 0.0 26.6 0.4 0.6 64.2 1.8 2.3 3rd Party - - - - - 100% 49% 40% - - - - - - 61% - - - - - - - - 44% Equipment Failure 11% 6% - - - - 45% 45% 61% 100% 100% - 100% 100% 39% 94% 30% - - - - 58% 78% 28% Operation 69% 70% - 2% 5% - 3% 1% - - - - - - - 6% 70% - 1% 0% - 1% 0% - Other 20% 24% - 98% 95% - 3% 15% 39% - - - - - - - - 100% 99% 100% 100% 41% 21% 28% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - STOCKWELL(4.16KV) - Customers: 1,463 4.6 0.0 3.0 73.1 1.1 2.0 27.7 1.0 5.0 449.3 1.0 1.0 33.9 0.2-2.9 0.1-2.7 0.0-488.9 1.3 1.0 3rd Party - - 33% - - 50% - - - - - - - - - - - - 100% 100% - 1% 1% - Equipment Failure 100% 100% 33% 20% 2% - 28% 2% 59% 100% 100% - 100% 100% - - - - - - - 99% 92% - Operation - - - 80% 98% - 15% 2% 1% - - - - - - 100% 100% - - - - 1% 7% - Other - - 33% - - 50% - - 20% - - 100% - - - - - - - - - - - 100% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - 57% 96% 20% - - - - - - - - - - - - - - - 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% - - - - - - - - - - - - - - - 24

Reliability Histories for Individual Circuits Serving Compton - 11 of 13 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 TICHENOR(16KV) - Customers: 1,252 183.6 0.8 7.4 303.1 3.6 3.5 234.7 1.8 5.5 1.9 0.0 - - - 1.0 64.7 0.5 2.1 45.7 1.5 0.5 112.3 2.1 3.6 3rd Party 1% 0% 54% 4% 0% - 42% 57% 37% - - - - - - - - - - - - - - - Equipment Failure 76% 77% 19% 39% 70% 43% 47% 35% 9% - - - - - - 93% 96% 100% 100% 100% 100% 94% 98% 72% Operation 16% 17% 13% 56% 29% 29% 7% 5% - - - - - - - 7% 4% - - - - 4% 1% - Other 8% 6% 14% - - - 4% 4% 18% 100% 100% - - - - - - - - - - 2% 1% - Vegetation/Animal - - - - - 29% - - 18% - - - - - 100% - - - - - - - - 28% Weather/Fire/Earthquake - - - - - - - - 18% - - - - - - - - - - - - - - - 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 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 90% 92% 1% 100% 100% - - - - - - - 100% 100% 100% - - 100% - - - 100% 100% 65% Operation 10% 8% - 0% 0% - - - - - - - - - - - - - - - - - - - Other - - - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - 99% - - - - - - - - - - - - - - - - - 100% - - 35% TROCHU(16KV) - Customers: 1,947 237.9 1.2 2.6 137.6 1.8 5.2 130.9 0.9 2.0 - - - 12.1 0.0-55.1 1.0 1.0 - - - 67.2 1.1 1.0 3rd Party - - - 38% 42% 62% - - - - - - 49% 34% - - - - - - - 9% 1% - Equipment Failure 83% 69% 74% 52% 4% 38% 70% 10% 100% - - - - - - 90% 97% - - - - 74% 94% - Operation - - - - - - 5% 7% - - - - - - - 10% 3% - - - - 8% 3% - Other 1% 2% - 10% 54% - 26% 84% - - - - - - - - - - - - - - - - Vegetation/Animal 16% 29% 26% - - - - - - - - - - - - - - 100% - - - - - 100% Weather/Fire/Earthquake - - - - - - - - - - - - 51% 66% - - - - - - - 9% 2% - TUCKER(4.16KV) - Customers: 772 6.1 0.0 1.0 16.9 0.0-504.2 1.1 1.0 - - - - - - 20.2 0.0 - - - - 20.2 0.0-3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 100% 100% 100% 100% 100% - - - - - - - - - - 100% 100% - - - - 100% 100% - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - - - - - 100% 100% 100% - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - 25

Reliability Histories for Individual Circuits Serving Compton - 12 of 13 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 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% Other - - - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - 53% - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - 100% 100% - 85% 96% - WARD(4.16KV) - Customers: 957 11.2 0.0 2.0 164.7 1.0 4.0 0.6 0.0 2.0 - - - 15.9 0.0-10.4 0.6 3.5 2.8 0.0-29.0 0.7 3.5 3rd Party - - 50% - - 75% - - - - - - - - - - - 29% - - - - - 29% Equipment Failure 100% 100% - 98% 100% - - - - - - - - - - - - - - - - - - - Operation - - - 2% 0% 0% 100% 100% - - - - 100% 100% - - - - 100% 100% - 64% 9% - Other - - 50% - - 25% - - 100% - - - - - - - - 59% - - - - - 59% Vegetation/Animal - - - - - - - - - - - - - - - 100% 100% 12% - - - 36% 91% 12% WHITE(4.16KV) - Customers: 817 11.1 0.0-704.8 1.0 - - - 2.0 8.9 0.0 - - - - - - 4.0 - - - 8.9 0.0 4.0 3rd Party - - - - - - - - 50% - - - - - - - - - - - - - - - Equipment Failure 100% 100% - 100% 100% - - - - 100% 100% - - - - - - 25% - - - 100% 100% 25% Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - - - - - - - 50% - - - - - - - - 50% - - - - - 50% Vegetation/Animal - - - - - - - - - - - - - - - - - 25% - - - - - 25% WILDCAT(16KV) - Customers: 1,665 101.0 0.2 1.0 145.7 0.1-381.4 3.0 1.0 - - 1.0 - - 1.0 21.0 1.0 1.0 - - - 21.0 1.0 3.0 3rd Party - - 100% - - - 28% 33% - - - - - - - - - - - - - - - - Equipment Failure 23% 34% - 99% 99% - 53% 33% 100% - - - - - - 26% 2% - - - - 26% 2% - Operation - - - 1% 1% - 0% 0% - - - - - - - 74% 98% - - - - 74% 98% - Other 77% 66% - - - - 19% 33% - - - 100% - - 100% - - 100% - - - - - 100% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - 26

Reliability Histories for Individual Circuits Serving Compton - 13 of 13 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 WINONA(16KV) - Customers: 1,397 16.2 0.2-551.3 2.4 0.1 132.8 0.6 2.6 - - - - - - 2.4 0.0-333.4 1.7 0.2 335.8 1.7 0.2 3rd Party 5% 0% - - - - 9% 24% 49% - - - - - - - - - - - - - - - Equipment Failure - - - 55% 61% - - - 49% - - - - - - - - - 0% 0% - 0% 0% - Operation 2% 0% - 8% 3% - 6% 10% 3% - - - - - - 100% 100% - 100% 100% 100% 100% 100% 100% Other 93% 99% - - - - 37% 24% - - - - - - - - - - - - - - - - Vegetation/Animal - - - 36% 37% 100% - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - 47% 42% - - - - - - - - - - - - - - - - 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 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - 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% - - - - - - - - - - - - - - - - - - - - - ZENO(16KV) - Customers: 91 135.6 1.3 2.7 25.3 0.0 2.0 46.7 1.0 3.0 - - - - - - - - - - - 2.0 - - 2.0 3rd Party 94% 99% 64% 47% 50% 50% - - 100% - - - - - - - - - - - - - - - Equipment Failure 6% 1% - - - - 100% 100% - - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - - - - - - - - - - - - - - - - - - - 50% - - 50% Vegetation/Animal - - 36% 53% 50% 50% - - - - - - - - - - - - - - 50% - - 50% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 27