Circuit Reliability Review

Circuit Reliability Review Kern District 2 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 KERNVILLE District CityList1 BAKERSFIELD BODFISH GLENNVILLE KERN COUNTY KERNVILLE LAKE ISABELLA MOUNTAIN MESA ONYX SQUIRREL MOUNTAIN VALLEY WELDON WOFFORD HEIGHTS 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 Kern District 2 CircuitList1 There are 50 circuits that serve Kern District 2 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers ALFALFA(12KV) 267 MC CASLIN(4.16KV) 53 - - BLEDSOE(12KV) 145 METTLER(12KV) 2,852 - - BOXCAR(12KV) 775 OAK CREEK(12KV) 196 - - BUTTE(12KV) 1,924 OVERALL(12KV) 1,108 - - CALIENTE(12KV) 2,650 PAPPAS(33KV) 4 - - CARBON(12KV) 783 PAXTON(4.16KV) 344 - - CASTLE BUTTE(33KV) 6 PINWHEEL(12KV) 4 - - CLAYMINE(12KV) 58 PUFF(12KV) 26 - - CONLEY(12KV) 216 QUIXOTE(12KV) 1 - - CONTE(12KV) 461 RANKIN(12KV) 88 - - CUDDEBACK(12KV) 1,928 RED BARN(12KV) 274 - - DISCOVERY(12KV) 880 SANCHO(12KV) 1 - - DIVISION(12KV) 1,509 SHEEP(12KV) 54 - - DOGBANE(12KV) 1,066 TEJON(12KV) 519 - - DUNTLEY(12KV) 47 TEMPEST(12KV) 1 - - DYSON(33KV) 1 TOMAHAWK(12KV) 2,004 - - FAIRMONT(12KV) 57 TUMBLEWEED(2.4KV) 66 - - FLYING D(12KV) 414 VIENTO(12KV) 2,527 - - GRUBSTAKE(12KV) 388 WILLOW SPRINGS(12KV) 269 - - GUST(12KV) 362 ZENDA(12KV) 321 - - HEAVY(33KV) 13 - - - HURON(12KV) 2,982 - - - ISNER(33KV) 5 - - - JAWBONE(12KV) 30 - - - JESSIE(4.16KV) 119 - - - JOBURG(2.4KV) 239 - - - KEENE(12KV) 311 - - - KOEFLER(4.8KV) 5 - - - LEVECHE(12KV) 2,001 - - - LLOYD(12KV) 984 - - - Grand Total 31,338 7

Reliability History of Circuits Serving Kern District 2 (No Exclusions) BarChart 300.0 250.0 2014 2015 2016 2017 274.2 SAIDI (average minutes of sustained interruptions) 200.0 150.0 100.0 50.0 0.0 119.4 112.1 114.8 134.5 139.7 126.6 131.1 Kern District 2 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 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 1.2 1.8 1.4 1.4 1.0 0.9 3.7 2.2 1.4 1.4 1.1 1.6 1.2 3.6 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 Kern District 2 2017 SAIDIChart Contributions to SAIDI by Outage Cause Vegetation /Animal 3.9% 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 25.9% Weather /Fire /Earthquake 9.3% Operation 8.5% 3rd Party 7.9% Equipment Failure 44.6% 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 Kern District 2 2017 SAIFIChart Contributions to SAIFI by Outage Cause Weather /Fire /Earthquake 8.5% 3rd Party 10.2% 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 Vegetation /Animal 7.7% Other 15.9% Operation 16.7% Equipment Failure 41.0% 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

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

Average Reliability of 50 Circuits Serving Kern District 2 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 50 Circuits Serving Kern District 2 -- Total Customers: 31,338 119.4 1.2 1.8 274.2 1.4 3.7 126.6 1.4 2.2 65.9 0.5 1.2 17.7 0.2 0.7 36.9 0.3 1.4 10.6 0.2 0.4 131.1 1.2 3.6 3rd Party 16% 22% 14% 4% 9% 10% 17% 14% 12% 7% 10% 8% 9% 16% 5% 1% 1% 9% 33% 19% 27% 8% 10% 10% Equipment Failure 35% 22% 18% 19% 22% 5% 33% 30% 20% 53% 53% 17% 48% 34% 24% 32% 39% 4% 30% 20% 18% 45% 41% 14% Operation 6% 22% 3% 11% 10% 1% 11% 12% 7% 2% 10% 1% 6% 3% - 22% 25% 1% 5% 32% - 8% 17% 1% Other 21% 14% 41% 34% 39% 59% 24% 38% 48% 33% 24% 72% 22% 19% 50% 14% 10% 56% 27% 3% 13% 26% 16% 55% Vegetation/Animal 5% 6% 14% 0% 0% 2% 0% 2% 2% 0% 0% - 16% 27% 14% 5% 6% 25% 3% 14% 20% 4% 8% 14% Weather/Fire/Earthquake 17% 14% 11% 32% 21% 22% 14% 4% 10% 5% 3% 1% - - 6% 24% 19% 5% 2% 13% 21% 9% 9% 6% 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 Kern District 2-1 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 ALFALFA(12KV) - Customers: 267 108.4 1.0 1.1 353.5 2.8 1.3 69.2 1.0 1.0 - - CircuitHistory - 99.9 0.1-34.5 0.9 0.1 - - - 134.4 0.9 0.1 3rd Party - - - 17% 31% 7% - - - - - 1- - - - - - - - - - - - - Equipment Failure 86% 87% 18% 5% 8% - 100% 100% - - - - 100% 100% - 2% 0% - - - - 75% 8% - Operation - - - 4% 31% 7% - - - - - - - - - - - - - - - - - - Other - - - 75% 31% 86% - - 100% - - - - - - 98% 100% 100% - - - 25% 92% 100% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 14% 13% 82% - - - - - - - - - - - - - - - - - - - - - BLEDSOE(12KV) - Customers: 145 107.3 0.4-618.6 1.2 4.8 85.4 0.4 2.8 179.5 0.3 - - - 1.0 - - 2.0 - - - 179.5 0.3 3.0 3rd Party - - - 0% 1% 21% 56% 61% 28% - - - - - - - - - - - - - - - Equipment Failure 97% 34% - 1% 1% - 23% 12% - - - - - - - - - 100% - - - - - 67% Operation - - - - - - - - - - - - - - - - - - - - - - - - Other 2% 64% - 99% 98% 79% 21% 27% 72% 100% 100% - - - 100% - - - - - - 100% 100% 33% Vegetation/Animal 1% 2% - - - - - - - - - - - - - - - - - - - - - - BOXCAR(12KV) - Customers: 775 26.0 0.4 3.5 1142.3 3.2 5.4 429.7 3.4 1.2 197.9 1.0 1.0 37.6 0.2-87.1 1.1-0.1 0.0-322.7 2.3 1.0 Equipment Failure 60% 25% 2% 20% 5% - 4% 4% 17% 100% 100% 100% - - - 42% 5% - 100% 100% - 73% 46% 100% Operation 39% 74% - - - - 50% 90% 83% - - - 100% 100% - 58% 95% - - - - 27% 54% - Other 1% 1% 33% 77% 36% 82% - - - - - - - - - - - - - - - - - - Vegetation/Animal - - 33% - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - 33% 3% 59% 18% 46% 6% - - - - - - - - - - - - - - - - BUTTE(12KV) - Customers: 1,924 107.2 0.7 1.9 15.1 0.1 1.0 22.4 0.1 3.0 1.1 0.0-0.1 0.0-1.6 0.0 2.0 - - - 2.7 0.0 2.0 3rd Party 98% 96% 48% 3% 2% - 73% 56% 33% - - - - - - - - - - - - - - - Equipment Failure 2% 4% - - - - 26% 13% 34% 100% 100% - 100% 100% - - - - - - - 42% 57% - Operation - - - 40% 89% - 1% 31% 33% - - - - - - 100% 100% - - - - 58% 43% - Other - - 52% 57% 9% 100% - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - 100% - - - - - 100% 15

Reliability Histories for Individual Circuits Serving Kern District 2-2 of 13 CircuitHistory 2 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 CALIENTE(12KV) - Customers: 2,650 4.5 0.0 1.0 317.4 0.2 3.7 66.2 0.8 0.7 12.3 0.1 0.2 16.4 0.3 1.2 1.0 0.0 2.0 15.6 0.2-45.3 0.6 3.4 3rd Party - - - - - 27% - - - - - - 99% 99% - - - - 98% 99% - 70% 75% - Equipment Failure 88% 93% - 0% 0% - 92% 96% 100% 100% 100% 100% 1% 1% - 100% 100% - 1% 0% - 30% 25% 5% Operation 12% 8% - 0% 1% - 8% 4% - - - - - - - - - - 1% 0% - 0% 0% - Other - - - - - 27% - - - - - - - - 100% - - 100% - - - - - 95% Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 100% 99% 47% - - - - - - - - - - - - - - - - - - CARBON(12KV) - Customers: 783 79.9 1.2 10.1 588.5 5.2 4.8 204.0 1.7 1.4 0.1 0.0 1.0 9.5 0.0-53.6 0.4 0.6 5.6 0.0 2.0 68.7 0.4 3.6 3rd Party - - - 0% 0% - 42% 35% 29% - - - - - - - - - - - - - - - Equipment Failure 85% 76% 56% 18% 2% - 27% 3% - 100% 100% - 100% 100% - - - - 100% 100% - 22% 4% - Operation 15% 24% 8% 0% 1% - 32% 61% - - - - - - - 91% 94% 96% - - - 71% 90% 17% Other - - 20% 80% 73% 100% - - 71% - - 100% - - - 9% 6% 4% - - 100% 7% 6% 83% Vegetation/Animal - - 8% - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - 8% 2% 23% - - - - - - - - - - - - - - - - - - - CASTLE BUTTE(33KV) - Customers: 6 130.0 1.0 6.0 - - 10.0 253.4 1.2 3.0 98.0 1.0 3.0 163.0 1.0 5.0 - - - - - - 261.0 2.0 8.0 Equipment Failure - - 17% - - - 100% 100% 33% 100% 100% - - - - - - - - - - 38% 50% - Operation - - 17% - - - - - - - - - - - - - - - - - - - - - Other 100% 100% 50% - - 90% - - 33% - - 100% 100% 100% 80% - - - - - - 62% 50% 88% Vegetation/Animal - - 17% - - 10% - - - - - - - - 20% - - - - - - - - 13% Weather/Fire/Earthquake - - - - - - - - 33% - - - - - - - - - - - - - - - CLAYMINE(12KV) - Customers: 58 281.2 1.0 8.9 - - 10.0 1108.7 2.1 2.9 90.7 1.0 3.0 164.2 1.0 5.0 - - - - - - 254.8 2.0 8.0 3rd Party - - 33% - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - 12% - - - 100% 100% 33% 100% 100% - - - - - - - - - - 36% 50% - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other 100% 100% 44% - - 90% - - 34% - - 100% 100% 100% 80% - - - - - - 64% 50% 88% Vegetation/Animal - - 11% - - 10% - - - - - - - - 20% - - - - - - - - 12% Weather/Fire/Earthquake - - - - - - - - 34% - - - - - - - - - - - - - - - 16

Reliability Histories for Individual Circuits Serving Kern District 2-3 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 CONLEY(12KV) - Customers: 216 402.3 1.1 1.0 528.9 2.0 4.7 144.6 0.4 - - - - - - 1.9 - - - - - - - - 1.9 3rd Party - - - - - - - - - - - - - - 100% - - - - - - - - 100% Equipment Failure 23% 9% - - - - 31% 20% - - - - - - - - - - - - - - - - Operation - - - - - 8% - - - - - - - - - - - - - - - - - - Other - - - 49% 51% 40% 56% 44% - - - - - - - - - - - - - - - - Vegetation/Animal - - 100% - - - 11% 36% - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 77% 91% - 51% 49% 52% 2% 1% - - - - - - - - - - - - - - - - CONTE(12KV) - Customers: 461 352.7 3.4 2.7 0.3 0.0-155.5 1.0 2.0 - - - 155.1 1.0-5.8 0.1 1.0 6.0 1.0-166.9 2.1 1.0 3rd Party - - - - - - - - - - - - - - - 100% 100% - - - - 3% 3% - Equipment Failure - - - - - - - - - - - - - - - - - - 100% 100% - 4% 48% - Operation - - - 100% 100% - 5% 2% - - - - 0% 1% - - - - - - - 0% 1% - Other - - - - - - 95% 98% 50% - - - - - - - - - - - - - - - Vegetation/Animal 3% 11% 24% - - - - - 50% - - - 100% 99% - - - 100% - - - 93% 49% 100% Weather/Fire/Earthquake 97% 89% 76% - - - - - - - - - - - - - - - - - - - - - CUDDEBACK(12KV) - Customers: 1,928 30.1 1.8 0.8 256.2 2.0 4.8 146.3 1.5 2.1 96.2 1.0 3.0 3.0 0.0 0.7 110.1 0.7 1.4 26.4 0.2-235.7 1.9 5.1 3rd Party 60% 9% 100% 0% 0% - - - 7% 80% 82% 43% - - - 1% 0% 70% 98% 99% - 44% 53% 44% Equipment Failure 3% 0% - 9% 9% 1% 52% 64% 19% 6% 2% - 100% 100% - 22% 49% - 2% 1% - 14% 20% - Operation 37% 91% - 29% 32% 2% 8% 5% - - - - - - - - - - - - - - - - Other - - - 43% 56% 37% 17% 14% 67% 14% 16% 52% - - - 31% 23% - - - - 20% 17% 31% Vegetation/Animal - - - - - - - - - - - - - - - 1% 0% - - - - 1% 0% - Weather/Fire/Earthquake - - - 19% 3% 60% 23% 18% 6% - - 5% - - 100% 44% 27% 30% - - - 21% 10% 25% DISCOVERY(12KV) - Customers: 880 268.0 1.5 2.0 926.0 2.6 5.9 153.1 0.7 0.3 56.4 0.5-3.5 0.0-116.5 1.0 0.0 6.0 1.0 3.0 182.4 2.5 3.0 3rd Party 1% 0% 1% - - - - - - - - - - - - - - - - - - - - - Equipment Failure 2% 1% - 49% 22% 14% 97% 94% 100% 91% 88% - 41% 36% - 1% 1% - - - - 30% 18% - Operation 0% 1% - 1% 38% - 3% 6% - - - - 59% 64% - 99% 99% - - - - 64% 40% - Other 96% 98% 49% 26% 21% 53% - - - 7% 9% - - - - - - 100% - - - 2% 2% 1% Vegetation/Animal - - 49% - - - - - - 2% 3% - - - - - - - - - - 1% 1% - Weather/Fire/Earthquake - - - 25% 18% 33% - - - - - - - - - - - - 100% 100% 100% 3% 39% 99% 17

Reliability Histories for Individual Circuits Serving Kern District 2-4 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 DIVISION(12KV) - Customers: 1,509 18.2 0.2-12.7 0.1 3.7 176.2 0.9 - - - - - - - 133.1 1.0 2.0 - - - 133.1 1.0 2.0 3rd Party - - - - - 56% 100% 100% - - - - - - - - - - - - - - - - Equipment Failure 100% 100% - 34% 37% - - - - - - - - - - - - - - - - - - - Operation - - - 66% 63% - - - - - - - - - - - - - - - - - - - Other - - - - - 44% - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - 17% 4% 100% - - - 17% 4% 100% Weather/Fire/Earthquake - - - - - - - - - - - - - - - 83% 96% - - - - 83% 96% - DOGBANE(12KV) - Customers: 1,066 178.7 2.9 4.0 65.5 4.1 4.1 97.8 3.0 3.0 337.1 2.8 4.0 103.7 1.0 5.4 0.3 0.0 2.0 - - 1.0 441.1 3.8 12.4 3rd Party 12% 45% - 23% 25% - - - - - - - - - - - - - - - - - - - Equipment Failure 1% 0% - 12% 25% - 3% 0% - 97% 72% 25% 100% 100% 74% 100% 100% - - - 100% 98% 80% 48% Operation 0% 0% - 33% 2% 27% 0% 0% - 3% 28% - - - - - - - - - - 2% 20% - Other 87% 55% 100% 32% 49% 65% 97% 100% 100% - - 75% - - 26% - - 100% - - - - - 52% Vegetation/Animal - - - - - 7% - - - - - - - - - - - - - - - - - - DUNTLEY(12KV) - Customers: 47 - - 1.1 377.5 1.7 1.0 38.6 0.4 - - - - - - - - - - - - - - - - 3rd Party - - 100% 49% 3% 100% - - - - - - - - - - - - - - - - - - Equipment Failure - - - - - - - - - - - - - - - - - - - - - - - - Operation - - - 28% 39% - - - - - - - - - - - - - - - - - - - Other - - - - - - 100% 100% - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 23% 59% - - - - - - - - - - - - - - - - - - - DYSON(33KV) - Customers: 1 239.6 1.2 2.3 - - 1.8 - - - - - 2.0 - - - - - - 26.0 1.0-26.0 1.0 2.0 Equipment Failure - - - - - - - - - - - - - - - - - - 100% 100% - 100% 100% - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - 45% - - 100% - - - - - 100% - - - - - - - - - - - 100% Vegetation/Animal 100% 100% 55% - - - - - - - - - - - - - - - - - - - - - 18

Reliability Histories for Individual Circuits Serving Kern District 2-5 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 FAIRMONT(12KV) - Customers: 57 6.7 0.5 2.4 334.8 1.0 6.5 632.3 6.1 2.9 - - - - - - 32.9 0.5 2.5 - - - 32.9 0.5 2.5 3rd Party - - - - - - 60% 65% 68% - - - - - - - - 39% - - - - - 39% Equipment Failure - - 82% 4% 2% - 23% 19% - - - - - - - 100% 100% 61% - - - 100% 100% 61% Operation - - - - - - 7% 8% 16% - - - - - - - - - - - - - - - Other - - - 62% 49% 92% - - - - - - - - - - - - - - - - - - Vegetation/Animal 100% 100% 18% - - - 10% 8% 16% - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 34% 49% 8% - - - - - - - - - - - - - - - - - - FLYING D(12KV) - Customers: 414 95.9 0.2 3.5 1782.8 9.4 9.8 51.6 2.1 2.1 55.0 0.1 2.4 9.8 1.0 - - - 1.0 66.4 0.2-131.2 1.3 3.4 3rd Party - - - - - - 21% 47% - - - - - - - - - - - - - - - - Equipment Failure 65% 85% 30% 24% 21% 17% 66% 6% - - - - 29% 1% - - - - - - - 2% 1% - Operation 1% 4% 12% 0% 0% - - - - 34% 24% - - - - - - - - - - 14% 2% - Other 34% 11% 58% 48% 41% 64% - - 4% - - 97% 61% 99% - - - 100% 100% 100% - 55% 89% 98% Vegetation/Animal - - - - - - 13% 47% - - - - 10% 0% - - - - - - - 1% 0% - Weather/Fire/Earthquake - - - 28% 37% 19% - - 96% 66% 76% 3% - - - - - - - - - 28% 8% 2% GRUBSTAKE(12KV) - Customers: 388 138.3 0.8 0.9 791.9 3.8 3.9 101.1 0.4 0.4 24.9 0.1-34.0 0.1 0.4 31.8 0.4 3.6 - - - 90.7 0.6 4.0 3rd Party - - - 5% 9% - - - - - - - - - 55% 7% 2% - - - - 3% 1% 6% Equipment Failure - - - 3% 8% 8% 52% 21% 40% 71% 47% - 100% 100% - 36% 11% - - - - 69% 28% - Operation 32% 27% - 4% 2% - - - - 7% 33% - - - - 41% 85% - - - - 16% 66% - Other 60% 37% 67% 88% 81% 66% 40% 72% 60% - - - - - 45% - - - - - - - - 5% Vegetation/Animal 9% 36% 33% 0% 0% 26% 8% 8% - - - - - - - 17% 2% 100% - - - 6% 1% 90% Weather/Fire/Earthquake - - - - - - - - - 22% 21% - - - - - - - - - - 6% 3% - GUST(12KV) - Customers: 362 265.0 2.1-84.1 0.3 8.5 177.8 3.1 10.1 - - - - - - - - 1.0 3.5 0.0-3.5 0.0 1.0 3rd Party 2% 3% - - - - - - 10% - - - - - - - - - 100% 100% - 100% 100% - Equipment Failure 98% 97% - 13% 2% - 54% 35% 39% - - - - - - - - - - - - - - - Operation - - - 48% 76% - - - - - - - - - - - - - - - - - - - Other - - - - - 100% 46% 65% 45% - - - - - - - - 100% - - - - - 100% Vegetation/Animal - - - - - - - - 5% - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 38% 22% - - - - - - - - - - - - - - - - - - - 19

Reliability Histories for Individual Circuits Serving Kern District 2-6 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 HEAVY(33KV) - Customers: 13 38.4 0.3-937.9 2.2 1.2 227.5 2.3 2.0 18.9 0.1 0.1 25.2 0.1 0.1 234.0 1.0 1.0 99.1 0.2-377.2 1.3 1.2 3rd Party 71% 75% - 2% 3% - - - - - - - - - - - - - - - - - - - Equipment Failure - - - 68% 45% - - - - 100% 100% 100% 100% 100% - - - - 100% 100% - 38% 24% 7% Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - - 30% 48% 93% 100% 100% 100% - - - - - 100% 100% 100% 100% - - - 62% 76% 93% Vegetation/Animal 29% 25% - 1% 3% 7% - - - - - - - - - - - - - - - - - - HURON(12KV) - Customers: 2,982 17.3 0.0-5.1 0.0 3.9 205.9 3.0 2.3 196.9 1.3 4.1 3.1 0.0-5.4 0.0 0.8 1.0 0.0-206.4 1.4 4.8 3rd Party - - - - - 43% 28% 35% 44% - - - - - - 48% 97% - - - - 1% 2% - Equipment Failure - - - - - - 0% 0% - - - - 100% 100% - 52% 3% - - - - 3% 1% - Operation 100% 100% - - - - 2% 2% - 2% 21% - - - - - - - - - - 2% 20% - Other - - - 1% 33% 57% 55% 57% 12% 98% 79% 100% - - - - - 100% 100% 100% - 94% 76% 100% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 99% 67% - 15% 7% 44% - - - - - - - - - - - - - - - ISNER(33KV) - Customers: 5 220.4 1.0 3.0 50.5 0.2 1.0 285.0 2.0 2.4 - - 1.0 93.0 0.6 0.4 - - - 29.6 1.6 0.4 122.6 2.2 1.8 Equipment Failure - - - - - - - - 42% - - - - - - - - - 100% 100% 100% 24% 73% 22% Operation - - - - - - - - - - - 100% - - - - - - - - - - - 56% Other - - 33% 100% 100% 100% 64% 70% - - - - - - - - - - - - - - - - Vegetation/Animal - - 67% - - - 36% 30% 58% - - - 100% 100% 100% - - - - - - 76% 27% 22% Weather/Fire/Earthquake 100% 100% - - - - - - - - - - - - - - - - - - - - - - JAWBONE(12KV) - Customers: 30 136.7 1.1-824.9 2.5 1.0 193.2 1.9 1.9 100.3 0.4-155.6 0.6 0.4 252.4 1.1 1.1 651.2 1.0-1159.5 3.0 1.5 3rd Party 93% 94% - - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - 49% 41% - - - - - - - 100% 100% 100% - - - 100% 100% - 70% 52% 29% Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - - 51% 59% 100% 100% 100% 100% 100% 100% - - - - 100% 100% 100% - - - 30% 48% 71% Vegetation/Animal 7% 6% - - - - - - - - - - - - - - - - - - - - - - 20

Reliability Histories for Individual Circuits Serving Kern District 2-7 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 JESSIE(4.16KV) - Customers: 119 155.3 1.1 1.0 43.1 0.1 1.8 - - - - - 1.8 - - - - - - 65.7 2.2 1.1 65.7 2.2 2.9 Equipment Failure 18% 10% - 100% 100% - - - - - - - - - - - - - 100% 100% 100% 100% 100% 37% Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - - - - 100% - - - - - 100% - - - - - - - - - - - 63% Vegetation/Animal 82% 90% 100% - - - - - - - - - - - - - - - - - - - - - JOBURG(2.4KV) - Customers: 239 - - - 467.3 2.0 1.0 318.6 3.0 2.0 - - - - - - 236.8 1.0 1.0 - - - 236.8 1.0 1.0 Equipment Failure - - - 50% 50% - 38% 34% - - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - - 50% 50% 100% 62% 66% 100% - - - - - - 100% 100% 100% - - - 100% 100% 100% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - KEENE(12KV) - Customers: 311 46.5 0.9-466.0 2.0 0.9 269.8 2.0 1.9 91.3 0.9 - - - - - - - 2.2 0.0-93.5 0.9-3rd Party - - - 29% 46% - - - - - - - - - - - - - - - - - - - Equipment Failure - - - 34% 46% - 67% 50% - 5% 0% - - - - - - - - - - 5% 0% - Operation - - - - - - - - - - - - - - - - - - 100% 100% - 2% 0% - Other 100% 100% - 34% 7% 100% 33% 50% 52% 95% 100% - - - - - - - - - - 93% 99% - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 3% 0% - - - 48% - - - - - - - - - - - - - - - KOEFLER(4.8KV) - Customers: 5 130.0 1.0 5.0 - - 10.0 254.0 2.0 3.0 217.9 1.6 3.0 163.0 1.0 5.0 - - - - - - 380.9 2.6 8.0 Equipment Failure - - 20% - - - 100% 100% 33% 100% 100% - - - - - - - - - - 57% 62% - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other 100% 100% 60% - - 90% - - 33% - - 100% 100% 100% 80% - - - - - - 43% 38% 88% Vegetation/Animal - - 20% - - 10% - - - - - - - - 20% - - - - - - - - 13% Weather/Fire/Earthquake - - - - - - - - 33% - - - - - - - - - - - - - - - 21

Reliability Histories for Individual Circuits Serving Kern District 2-8 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 LEVECHE(12KV) - Customers: 2,001 86.5 1.3 2.0 45.4 1.0 1.0 99.3 1.0 2.0 44.4 1.0 - - - 1.0 92.3 1.0 1.7 - - - 136.8 2.0 2.7 3rd Party 2% 3% - 31% 2% - - - - - - - - - - - - - - - - - - - Equipment Failure 94% 95% - 69% 98% - 98% 99% - 100% 100% - - - - 100% 100% 42% - - - 100% 100% 27% Operation - - - - - - - - - - - - - - - - - - - - - - - - Other 4% 2% 100% - - 100% 2% 1% 100% - - - - - 100% - - 58% - - - - - 73% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - LLOYD(12KV) - Customers: 984 145.8 1.9 2.3 854.8 4.0 2.6 101.4 0.6 0.0 - - - 75.0 1.1 2.3 153.5 1.6 0.3 0.3 0.0-228.8 2.7 2.7 3rd Party 0% 0% 30% - - - 33% 49% - - - - - - - - - - - - - - - - Equipment Failure 92% 63% 27% 6% 33% - 63% 49% 100% - - - - - - 44% 62% - 100% 100% - 30% 37% - Operation 1% 1% - 67% 33% - 1% 1% - - - - - - - 42% 18% - - - - 28% 11% - Other 2% 0% - 27% 34% 88% 3% 1% - - - - 81% 8% 57% - - 100% - - - 27% 3% 62% Vegetation/Animal 6% 36% 43% - - 12% - - - - - - 19% 92% 43% 14% 20% - - - - 15% 49% 38% MC CASLIN(4.16KV) - Customers: 53 187.5 1.0 2.0 - - 1.8 - - - - - 2.8 - - - - - - 1092.9 1.0-1092.9 1.0 2.8 Equipment Failure - - - - - - - - - - - - - - - - - - 0% 2% - 0% 2% - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - 50% - - 100% - - - - - 100% - - - - - - 100% 98% - 100% 98% 100% Vegetation/Animal 100% 100% 50% - - - - - - - - - - - - - - - - - - - - - METTLER(12KV) - Customers: 2,852 389.4 2.8 3.7 176.1 0.8 7.4 67.8 1.2 3.8 8.7 0.2 0.7 18.1 0.2 0.2 9.9 0.0 1.3 5.5 0.0 0.0 42.3 0.4 2.2 3rd Party 5% 4% 11% 18% 32% 6% 14% 1% 1% - - - - - - - - - 10% 12% - 1% 1% - Equipment Failure 56% 21% 39% 9% 7% - 12% 26% 11% 39% 83% 20% 100% 100% 100% 64% 82% - 77% 74% - 76% 90% 15% Operation 10% 46% 3% 0% 0% - 70% 35% 5% 21% 2% 19% 0% 0% - 0% 1% - - - - 5% 1% 6% Other 19% 13% 39% 4% 8% 56% 4% 38% 78% 40% 15% 61% - - - - - 77% 13% 14% 100% 10% 7% 66% Vegetation/Animal - - 6% 0% 0% - - - 6% - - - - - - - - 20% - - - - - 12% Weather/Fire/Earthquake 10% 15% 2% 70% 53% 38% 0% 0% - - - - - - - 36% 17% 3% - - - 8% 1% 1% 22

Reliability Histories for Individual Circuits Serving Kern District 2-9 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 OAK CREEK(12KV) - Customers: 196 152.6 1.0-338.3 1.9 7.0 187.6 1.4 1.7 20.8 0.1-31.8 0.3 3.7 51.8 0.2 2.0 - - - 104.4 0.6 5.7 3rd Party 100% 100% - - - - - - - - - - 100% 100% 73% - - - - - - 30% 50% 48% Equipment Failure - - - 100% 100% 14% 100% 100% 100% - - - - - - 49% 18% - - - - 24% 7% - Operation - - - - - - 0% 0% - 81% 64% - - - - - - - - - - 16% 6% - Other - - - - - 86% - - - 19% 36% - - - 27% 51% 82% - - - - 29% 37% 17% Vegetation/Animal - - - - - - - - - - - - - - - - - 100% - - - - - 35% OVERALL(12KV) - Customers: 1,108 35.4 2.0-61.5 4.1 1.0 142.5 3.0 3.0 318.2 2.0 3.0 - - 1.1 - - 2.0 - - 1.0 318.2 2.0 7.1 3rd Party 99% 100% - 50% 26% - 20% 1% - - - - - - 6% - - - - - - - - 1% Equipment Failure 1% 0% - 13% 25% - 0% 0% - 100% 100% 33% - - - - - - - - 100% 100% 100% 28% Operation - - - 2% 0% - - - - - - - - - - - - - - - - - - - Other - - - 34% 49% - 79% 99% 100% - - 67% - - 94% - - 100% - - - - - 71% Vegetation/Animal - - - - - 100% - - - - - - - - - - - - - - - - - - PAPPAS(33KV) - Customers: 4 - - 3.0 758.5 2.0 1.0 - - - - - - - - - - - 1.0 326.0 2.0-326.0 2.0 1.0 Equipment Failure - - - 86% 50% - - - - - - - - - - - - - 38% 50% - 38% 50% - Operation - - - 14% 50% 100% - - - - - - - - - - - - 62% 50% - 62% 50% - Other - - 100% - - - - - - - - - - - - - - 100% - - - - - 100% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - PAXTON(4.16KV) - Customers: 344 206.7 2.0 3.0 - - 2.0 0.6 0.0-135.9 1.0 3.9 - - - - - - 25.9 1.0-161.8 2.0 3.9 Equipment Failure 6% 50% - - - - - - - - - - - - - - - - 100% 100% - 16% 50% - Operation - - - - - - 100% 100% - - - - - - - - - - - - - - - - Other - - 67% - - 100% - - - - - 100% - - - - - - - - - - - 100% Vegetation/Animal 94% 50% 33% - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - - - - 100% 100% - - - - - - - - - - 84% 50% - 23

Reliability Histories for Individual Circuits Serving Kern District 2-10 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 PINWHEEL(12KV) - Customers: 4 - - - - - 6.0 69.0 1.0 - - - - - - - - - - - - - - - - Equipment Failure - - - - - - - - - - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - - - - 100% 100% 100% - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - PUFF(12KV) - Customers: 26 9.3 0.2 2.0 634.8 1.1 4.1 186.5 2.0 11.0 - - 0.1 - - 2.0 - - 0.2 - - - - - 2.2 Equipment Failure - - - - - - 69% 46% 9% - - - - - - - - - - - - - - - Operation 100% 100% 100% - - - 5% 4% 9% - - - - - - - - - - - - - - - Other - - - - - 28% - - 82% - - 100% - - 100% - - 100% - - - - - 100% Vegetation/Animal - - - - - - 26% 50% - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 100% 100% 72% - - - - - - - - - - - - - - - - - - QUIXOTE(12KV) - Customers: 1 638.0 1.0 - - - 1.0 77.0 2.0 - - - - - - - - - - - - - - - - Equipment Failure - - - - - - - - - - - - - - - - - - - - - - - - Operation 100% 100% - - - - - - - - - - - - - - - - - - - - - - Other - - - - - - 100% 100% - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - 100% - - - - - - - - - - - - - - - - - - RANKIN(12KV) - Customers: 88 160.5 1.3 2.7 3339.3 9.5 3.0 6.0 1.0 2.9 6.3 0.0 2.0 72.2 2.0 1.0 34.3 0.2 1.7 17.1 1.0-129.9 3.2 4.7 3rd Party - - - - - - - - 34% - - - - - - - - - - - - - - - Equipment Failure - - - 27% 21% 33% - - - 100% 100% - - - 100% 23% 14% - 7% 1% - 12% 2% 21% Operation - - - - - - - - - - - - - - - - - - 93% 99% - 12% 32% - Other 100% 100% 100% 25% 33% - - - - - - 100% 100% 100% - - - - - - - 56% 62% 42% Vegetation/Animal - - - - - - 100% 100% - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 48% 46% 67% - - 66% - - - - - - 77% 86% 100% - - - 20% 4% 37% 24

Reliability Histories for Individual Circuits Serving Kern District 2-11 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 RED BARN(12KV) - Customers: 274 197.7 2.0 4.9 37.1 0.1 10.0 254.6 2.0 4.0 97.7 1.0 3.0 162.6 1.0 5.0 - - - - - - 260.3 2.0 8.0 Equipment Failure - - 20% 23% 16% - 100% 100% 25% 100% 100% - - - - - - - - - - 38% 50% - Operation - - - 40% 46% - - - - - - - - - - - - - - - - - - - Other 64% 49% 60% 36% 35% 90% - - 50% - - 100% 100% 100% 80% - - - - - - 62% 50% 88% Vegetation/Animal - - 21% - - 10% - - - - - - - - 20% - - - - - - - - 12% Weather/Fire/Earthquake 36% 51% - 1% 3% - - - 25% - - - - - - - - - - - - - - - SANCHO(12KV) - Customers: 1 550.0 1.0 - - - - 77.0 2.0 - - - - - - - - - - - - - - - - Equipment Failure - - - - - - - - - - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other 100% 100% - - - - 100% 100% - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - SHEEP(12KV) - Customers: 54 386.5 2.4-716.9 2.7 2.4 494.0 4.5 5.5 271.5 2.0 - - - - 234.7 1.0 2.0 646.0 1.0-1152.2 4.0 2.0 3rd Party 84% 84% - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 1% 1% - 62% 62% 59% 1% 0% - - - - - - - - - - 100% 100% - 56% 25% - Operation - - - 2% 3% - 10% 33% 3% - - - - - - - - - - - - - - - Other 4% 13% - 35% 35% 41% 85% 66% 97% 100% 100% - - - - 100% 100% 50% - - - 44% 75% 50% Vegetation/Animal - - - - - - 4% 0% - - - - - - - - - 50% - - - - - 50% Weather/Fire/Earthquake 11% 2% - - - - - - - - - - - - - - - - - - - - - - TEJON(12KV) - Customers: 519 110.3 1.0 0.2 257.0 1.4 4.8 691.4 2.5 3.4 15.2 0.2 0.2 44.0 0.1 - - - 0.1 3.4 0.0-62.6 0.3 0.3 3rd Party 94% 99% 100% - - - - - - - - - - - - - - - - - - - - - Equipment Failure 6% 1% - 73% 28% 82% 13% 7% 29% - - - 100% 100% - - - - - - - 70% 25% - Operation 0% 0% - 1% 0% - - - - - - - - - - - - - - - - - - - Other - - - 1% 0% 18% 22% 54% 71% - - - - - - - - 100% 100% 100% - 5% 2% 32% Vegetation/Animal - - - - - - 0% 0% - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 25% 71% - 65% 39% - 100% 100% 100% - - - - - - - - - 24% 73% 68% 25

Reliability Histories for Individual Circuits Serving Kern District 2-12 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 TEMPEST(12KV) - Customers: 1 - - - 132.0 1.0 1.0 48.0 1.0 - - - - - - - - - - - - - - - - Equipment Failure - - - - - - - - - - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - - 100% 100% 100% - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - 100% 100% - - - - - - - - - - - - - - - - TOMAHAWK(12KV) - Customers: 2,004 106.5 0.9 0.1 371.0 0.8 1.7 4.6 0.0 2.6 11.1 0.0-0.3 0.0-2.7 0.0 2.0 15.2 1.3 1.7 29.2 1.3 3.7 3rd Party - - - - - - 94% 97% - - - - - - - - - 50% 55% 20% 100% 28% 20% 73% Equipment Failure 0% 0% - 13% 8% 40% 2% 2% 75% - - - 100% 100% - - - - - - - 1% 0% - Operation - - - 18% 7% - 3% 1% - - - - - - - 100% 100% - 45% 80% - 32% 79% - Other - - - - - - - - 25% - - - - - - - - 50% - - - - - 27% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 100% 100% 100% 68% 86% 60% - - - 100% 100% - - - - - - - - - - 38% 1% - TUMBLEWEED(2.4KV) - Customers: 66 - - 3.0 - - - 218.4 0.9 0.8 167.0 1.0 - - - - - - 1.0 122.8 1.0-289.8 2.0 1.0 Equipment Failure - - - - - - - - - - - - - - - - - - 100% 100% - 42% 49% - Operation - - - - - - 100% 100% 100% - - - - - - - - - - - - - - - Other - - 100% - - - - - - 100% 100% - - - - - - 100% - - - 58% 51% 100% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - VIENTO(12KV) - Customers: 2,527 74.2 1.0 1.8 57.8 0.2 2.1 14.4 1.0 2.7 0.6 0.0 1.0 0.3 0.0 0.7 2.1 0.0 1.2 3.3 0.4 1.0 6.4 0.4 3.9 3rd Party 64% 73% 39% - - - 9% 1% 25% - - - - - - - - - - - - - - - Equipment Failure - - - 14% 39% - 82% 97% 3% 100% 100% 100% 100% 100% - 66% 50% - - - - 36% 1% 25% Operation 4% 2% - - - 0% 2% 0% 25% - - - - - - 4% 20% - - - - 1% 0% - Other - - 5% 48% 52% 100% 6% 1% 22% - - - - - - - - 100% - - - - - 31% Vegetation/Animal 28% 25% - - - - - - - - - - - - 100% - - - 100% 100% 100% 52% 98% 43% Weather/Fire/Earthquake 4% 0% 56% 38% 8% - - - 25% - - - - - - 29% 30% - - - - 10% 0% - 26

Reliability Histories for Individual Circuits Serving Kern District 2-13 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 WILLOW SPRINGS(12KV) - Customers: 269 121.0 0.8 0.9 317.6 1.7 6.4 118.8 1.0 4.1 2.7 0.0 2.0 10.0 0.0-22.2 0.6 5.4 - - - 34.9 0.7 7.4 3rd Party - - - 83% 60% - - - 24% - - 100% - - - - - - - - - - - 27% Equipment Failure 16% 4% - 16% 22% 27% 59% 62% 35% 100% 100% - 100% 100% - - - - - - - 36% 2% - Operation 16% 19% - 0% 1% - 1% 8% - - - - - - - - - - - - - - - - Other 69% 78% 100% 1% 17% 73% 40% 30% 41% - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - 20% 91% 26% - - - 13% 89% 19% Weather/Fire/Earthquake - - - - - - - - - - - - - - - 80% 9% 74% - - - 51% 9% 54% ZENDA(12KV) - Customers: 321 17.4 0.2 4.0 715.9 3.1 5.6 174.8 2.0 4.6 7.4 0.1 2.0 10.1 0.0 1.0 - - 1.0 - - - 17.5 0.1 4.0 3rd Party - - 25% - - - - - 22% - - - - - - - - - - - - - - - Equipment Failure - - - 6% 1% - 97% 50% 35% 10% 6% - 100% 100% 100% - - - - - - 62% 24% 25% Operation 100% 100% 25% - - - - - - - - - - - - - - - - - - - - - Other - - 50% 10% 66% 54% - - - 90% 94% 100% - - - - - 100% - - - 38% 76% 75% Vegetation/Animal - - - - - - 3% 50% - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 84% 33% 46% - - 44% - - - - - - - - - - - - - - - 27