Circuit Reliability Review

Circuit Reliability Review Fontana 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 FOOTHILL District CityList1 BLOOMINGTON COLTON FONTANA GLEN AVON JURUPA VALLEY MIRA LOMA MUSCOY PEDLEY RANCHO CUCAMONGA RIVERSIDE RUBIDOUX SUNNYSLOPE 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 Fontana CircuitList1 There are 57 circuits that serve Fontana 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers ACOSTA(12KV) 1,054 MANTECA(12KV) 1,733 - - AGASSI(12KV) 1,148 MARBLE(12KV) 346 - - AUGUSTA(12KV) 1,098 MERRIL(4.16KV) 722 - - BAMBOO(12KV) 386 MORA(12KV) 1,773 - - BIG RIGG(12KV) 1,674 NASTASE(12KV) 83 - - BOBBER(12KV) 1,990 NICKLIN(12KV) 1,734 - - BOLOR(12KV) 454 REDBALL(12KV) 305 - - BORG(12KV) 70 ROCHHOLTZ(4.16KV) 714 - - CABANA(12KV) 2,334 SAMPRAS(12KV) 90 - - CASALS(12KV) 2,149 SANBER(12KV) 2,965 - - CASMALIA(12KV) 2,342 SANDELL(12KV) 1,762 - - CATAWBA(12KV) 1,074 SELLERS(12KV) 2,218 - - CITROW(12KV) 739 SHINE(12KV) 2,124 - - COLLEEN(12KV) 903 SILVA(12KV) 1,781 - - CONNERS(12KV) 32 SPEEDWAY(12KV) 155 - - DIGBY(12KV) 2,185 SPIKE(12KV) 1,210 - - DIXON(12KV) 1,397 STREAMLINER(12KV) 885 - - DORSEY(12KV) 1,599 TAMARIND(12KV) 2,301 - - DUNNING(12KV) 1,350 TENDER(12KV) 1,428 - - FEDERER(12KV) 2,552 TILDEN(12KV) 45 - - FLATCAR(12KV) 858 TOKAY(12KV) 2,377 - - HASTY(12KV) 950 TRACTOR(12KV) 321 - - HEFTLER(12KV) 285 TRAPP(12KV) 2,672 - - HIBISCUS(4.16KV) 346 WAHLSTROM(12KV) 2,403 - - HOPPER(12KV) 1,708 WIGWAG(12KV) 2,163 - - HUFF(12KV) 2,069 ZIMMER(12KV) 1,089 - - JUNIOR(12KV) 2,718 ZINFANDEL(12KV) 1,996 - - KAISER(12KV) 1,192 - - - LYTLE(12KV) 1,605 - - - MANNING(12KV) 1,278 - - - Grand Total 76,934 7

Reliability History of Circuits Serving Fontana (No Exclusions) BarChart SAIDI (average minutes of sustained interruptions) 160.0 140.0 120.0 100.0 80.0 60.0 40.0 20.0 0.0 2014 2015 2016 2017 134.5 139.7 112.1 114.8 112.4 87.5 75.8 58.5 Fontana 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 2.0 1.5 1.0 0.5 0.0 0.6 1.3 1.0 1.0 0.9 1.4 1.4 1.3 0.8 1.5 1.1 1.6 1.1 1.3 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 Fontana 2017 SAIDIChart Vegetation /Animal 0.0% 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 Other 13.8% Operation 15.0% Weather /Fire /Earthquake 10.2% 3rd Party 19.6% Equipment Failure 41.4% 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 Fontana 2017 SAIFIChart Contributions to SAIFI by Outage Cause Vegetation /Animal 0.0% Equipment Failure e.g., in-service failure of transformer, switch, or conductors Vegetation/Animal e.g., tree branch, rodent, or bird causing a short circuit between conductors Other e.g., patrolled but no cause found Operations e.g., urgent maintenance w/o 3-day notice 3 rd Party e.g., balloon, car hit pole, dig-in Other 15.9% Weather /Fire /Earthquake 14.3% Operation 26.9% 3rd Party 20.9% Equipment Failure 22.0% 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 Fontana Updated through Dec 2017

Average Reliability of 57 Circuits Serving Fontana 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 57 Circuits Serving Fontana -- Total Customers: 76,934 58.5 0.6 1.3 87.5 1.0 1.3 112.4 0.8 1.5 17.2 0.2 0.4 18.1 0.2 0.2 9.2 0.2 0.4 31.2 0.5 0.3 75.8 1.1 1.3 3rd Party 30% 28% 18% 18% 14% 11% 14% 18% 23% 0% 0% 16% 44% 44% 64% 6% 17% 19% 20% 19% 47% 20% 21% 33% Equipment Failure 49% 42% 15% 45% 35% 37% 35% 46% 20% 62% 42% 17% 38% 21% 2% 25% 4% - 37% 22% 10% 41% 22% 7% Operation 15% 21% 3% 20% 45% 4% 22% 18% 2% 12% 38% 4% 17% 35% - 44% 60% 16% 7% 10% 1% 15% 27% 6% Other 1% 5% 25% 2% 2% 28% 2% 3% 37% 2% 1% 15% 1% 1% 33% 22% 19% 55% 25% 26% 26% 14% 16% 33% Vegetation/Animal 0% 0% 27% 1% 1% 2% 16% 8% 6% - - 39% - - 2% - - 1% - - - - - 11% Weather/Fire/Earthquake 6% 3% 12% 15% 4% 19% 12% 7% 13% 24% 20% 9% - - - 4% 0% 9% 10% 23% 17% 10% 14% 9% 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 Fontana - 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 ACOSTA(12KV) - Customers: 1,054 116.3 0.2 1.9 49.0 1.0 0.0 263.1 1.3 1.0 31.0 0.0 CircuitHistory 0.0 31.5 0.3 - - - - 12.1 0.1-74.5 0.4 0.0 3rd Party - - - - - - - - - - - 1-100% 100% - - - - - - - 42% 72% - Equipment Failure 24% 48% - - - - 84% 76% - 95% 24% 100% - - - - - - 19% 4% - 42% 2% 100% Operation 1% 2% - 100% 100% - 3% 23% - 5% 76% - - - - - - - 2% 5% - 3% 4% - Other 8% 3% 1% - - 100% 13% 1% 100% - - - - - - - - - 79% 91% - 13% 22% - Vegetation/Animal - - 52% - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 67% 48% 47% - - - - - - - - - - - - - - - - - - - - - AGASSI(12KV) - Customers: 1,148 6.0 0.1-92.4 1.0-133.2 2.0 2.0 197.9 1.8 2.0 - - - 11.2 0.1 - - - - 209.0 1.9 2.0 3rd Party - - - 100% 100% - - - - - - - - - - - - - - - - - - - Equipment Failure - - - - - - 8% 50% 100% 83% 98% 100% - - - 100% 100% - - - - 84% 98% 100% Operation 100% 100% - - - - 92% 50% - 17% 2% - - - - - - - - - - 16% 2% - Other - - - - - - - - - - - - - - - - - - - - - - - - AUGUSTA(12KV) - Customers: 1,098 25.5 0.3 - - - - - - - - - - - - - - - - - - - - - - 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - - - - - - - - - - - - - - - - - - - - - - Operation 100% 100% - - - - - - - - - - - - - - - - - - - - - - Other - - - - - - - - - - - - - - - - - - - - - - - - BAMBOO(12KV) - Customers: 386 312.1 2.0-8.2 0.0 1.0 64.8 1.0 8.7 - - 1.0 - - - 73.6 1.1 2.0 - - 1.0 73.6 1.1 4.0 3rd Party 1% 1% - - - - - - 23% - - - - - - 21% 90% 50% - - - 21% 90% 25% Equipment Failure - - - 100% 100% 100% 7% 1% - - - - - - - 2% 1% - - - - 2% 1% - Operation 6% 4% - - - - - - - - - - - - - - - - - - - - - - Other - - - - - - 93% 99% 77% - - 100% - - - - - - - - 100% - - 50% Weather/Fire/Earthquake 93% 95% - - - - - - - - - - - - - 77% 10% 50% - - - 77% 10% 25% 15

Reliability Histories for Individual Circuits Serving Fontana - 2 of 15 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 BIG RIGG(12KV) - Customers: 1,674 74.7 0.4 1.0 509.4 1.2-25.8 0.0 1.0 13.1 0.0 - - - - 17.4 1.0 1.0 48.2 0.1-78.8 1.1 1.0 3rd Party 51% 73% - - - - - - - - - - - - - 100% 100% 100% - - - 22% 88% 100% Equipment Failure 46% 25% - 8% 4% - - - - - - - - - - - - - 0% 1% - 0% 0% - Operation 1% 1% - 1% 1% - - - - - - - - - - 0% 0% - - - - 0% 0% - Other 1% 0% - 8% 4% - 100% 100% 100% 100% 100% - - - - - - - 70% 79% - 59% 11% - Weather/Fire/Earthquake 0% 0% 100% 83% 90% - - - - - - - - - - - - - 30% 20% - 18% 2% - BOBBER(12KV) - Customers: 1,990 17.0 0.1-79.5 0.7 2.3 41.7 0.1 1.0 3.2 0.0 2.0 1.6 0.0-59.9 1.0 2.0 119.2 1.1 0.5 183.9 2.1 4.4 3rd Party - - - - - 43% - - - 96% 92% 50% 100% 100% - - - - - - - 3% 1% 23% Equipment Failure 100% 95% - 57% 50% - 27% 62% - - - - - - - - - - 95% 98% 100% 62% 50% 10% Operation 0% 5% - - - 14% 0% 5% - 4% 8% - - - - - - - 5% 2% - 3% 1% - Other - - - - - - - - 100% - - - - - - 100% 100% 100% - - - 33% 48% 44% Vegetation/Animal - - - 43% 50% 43% - - - - - 50% - - - - - - - - - - - 23% Weather/Fire/Earthquake - - - - - - 73% 33% - - - - - - - - - - - - - - - - BOLOR(12KV) - Customers: 454 5.2 0.1 3.3 - - - 145.3 1.1 0.3 - - - - - - 78.3 1.0-65.5 0.9-143.9 1.9-3rd Party - - 21% - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - - - - 100% 100% 100% - - - - - - - - - - - - - - - Operation 100% 100% - - - - - - - - - - - - - 100% 100% - - - - 54% 53% - Other - - 79% - - - - - - - - - - - - - - - 100% 100% - 46% 47% - BORG(12KV) - Customers: 70 68.3 0.0 1.0 460.0 2.7 2.6 124.2 1.8 2.1 - - - - - - - - - - - - - - - 3rd Party - - - 65% 38% 39% - - - - - - - - - - - - - - - - - - Equipment Failure 100% 100% - 5% 40% 39% 10% 50% 100% - - - - - - - - - - - - - - - Operation - - - - - - 90% 50% - - - - - - - - - - - - - - - - Other - - 100% - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - 30% 22% 22% - - - - - - - - - - - - - - - - - - 16

Reliability Histories for Individual Circuits Serving Fontana - 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 CABANA(12KV) - Customers: 2,334 15.0 0.2 2.5 42.8 0.2 2.6 96.3 0.1 - - - - - - - 44.2 0.1-21.8 1.0 0.8 66.0 1.1 0.8 3rd Party - - - - - - - - - - - - - - - - - - 100% 100% 100% 33% 92% 100% Equipment Failure 100% 100% 100% 100% 100% 62% - - - - - - - - - 100% 100% - - - - 67% 8% - Operation - - - - - - 3% 22% - - - - - - - - - - - - - - - - Other - - - - - 38% - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - 97% 78% - - - - - - - - - - - - - - - - CASALS(12KV) - Customers: 2,149 40.2 1.0-2.2 0.0-243.6 1.1 0.7 - - - 1.7 0.0 - - - - - - - 1.7 0.0-3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 100% 100% - - - - 100% 100% 100% - - - - - - - - - - - - - - - Operation - - - 100% 100% - - - - - - - 100% 100% - - - - - - - 100% 100% - Other - - - - - - - - - - - - - - - - - - - - - - - - CASMALIA(12KV) - Customers: 2,342 79.9 0.5 3.5 696.4 1.1 0.0 568.4 0.5-185.8 0.2 1.4 - - - - - 0.4 0.9 0.0-186.7 0.2 1.8 3rd Party - - - 62% 30% - - - - - - 73% - - - - - - - - - - - 57% Equipment Failure 92% 54% - 16% 35% 100% - - - 100% 100% 27% - - - - - - - - - 100% 99% 21% Operation 7% 46% - - - - 100% 100% - - - - - - - - - - - - - - - - Other - - 58% - - - - - - - - - - - - - - 50% 100% 100% - 0% 1% 11% Vegetation/Animal - - - - - - - - - - - - - - - - - 50% - - - - - 11% Weather/Fire/Earthquake 1% 0% 42% 22% 35% - - - - - - - - - - - - - - - - - - - CATAWBA(12KV) - Customers: 1,074 20.5 0.1-103.1 1.1-10.4 0.0 - - - - 2.5 0.0 - - - - 8.0 1.0 1.0 10.5 1.0 1.0 3rd Party - - - 7% 4% - - - - - - - - - - - - - - - - - - - Equipment Failure 23% 8% - 93% 95% - 100% 100% - - - - - - - - - - - - - - - - Operation 77% 92% - 1% 1% - - - - - - - 100% 100% - - - - - - - 24% 1% - Other - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - 100% 100% 100% 76% 99% 100% 17

Reliability Histories for Individual Circuits Serving Fontana - 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 CITROW(12KV) - Customers: 739 2.4 0.0-10.6 0.1-1.2 0.0 1.0 - - - - - 1.0 0.9 0.0-78.3 2.8 1.0 79.3 2.8 2.0 3rd Party - - - 51% 44% - - - 100% - - - - - - - - - - - 100% - - 49% Equipment Failure - - - - - - 10% 11% - - - - - - - - - - 3% 1% - 3% 1% - Operation 100% 100% - 49% 56% - 90% 89% - - - - - - - 100% 100% - - - - 1% 0% - Other - - - - - - - - - - - - - - 100% - - - - - - - - 51% Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - 97% 99% - 96% 99% - COLLEEN(12KV) - Customers: 903 10.7 0.1 1.0 321.4 2.3 2.6 184.3 3.0 2.1 - - - - - - 8.8 1.4 0.9 46.8 1.3-55.6 2.7 0.9 3rd Party - - - - - - - - 18% - - - - - - - - - - - - - - - Equipment Failure 4% 1% - 66% 42% - 97% 98% 82% - - - - - - - - - 4% 0% - 3% 0% - Operation 96% 99% - 15% 42% - 3% 2% - - - - - - - 100% 100% 100% - - - 16% 51% 100% Other - - - - - 76% - - - - - - - - - - - - 96% 100% - 81% 49% - Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 19% 16% 24% - - - - - - - - - - - - - - - - - - CONNERS(12KV) - Customers: 32 1063.6 1.5 - - - 1.0 - - - - - - - - - - - - - - - - - - 3rd Party - - - - - 100% - - - - - - - - - - - - - - - - - - Equipment Failure 100% 100% - - - - - - - - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - - - - - - - - - - - - - - - - - - - - - - - DIGBY(12KV) - Customers: 2,185 101.0 1.1 1.0 66.0 1.1-10.8 0.0-6.6 0.0 0.5 5.3 0.0 - - - - - - - 11.8 0.1 0.5 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 100% 100% - - - - 100% 100% - - - - - - - - - - - - - - - - Operation - - - 100% 100% - - - - 100% 100% 100% 100% 100% - - - - - - - 100% 100% 100% Other - - - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - - - - - 18

Reliability Histories for Individual Circuits Serving Fontana - 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 DIXON(12KV) - Customers: 1,397 36.6 1.0 0.0 424.9 4.6 2.6 209.4 0.9 6.0 - - - 8.6 1.0-2.1 0.0-6.0 0.0-16.7 1.0-3rd Party 100% 100% 84% 42% 65% 1% - - - - - - - - - - - - - - - - - - Equipment Failure - - - 57% 35% 99% 100% 97% 50% - - - - - - 100% 100% - 100% 100% - 49% 2% - Operation - - 16% 0% 0% - 0% 3% - - - - 100% 100% - - - - - - - 51% 98% - Other - - - - - - - - 33% - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - 17% - - - - - - - - - - - - - - - DORSEY(12KV) - Customers: 1,599 63.3 0.9 0.2 69.3 0.9-35.1 0.1 1.9 7.7 1.0-10.4 1.0 1.0 - - - - - - 18.1 2.0 1.0 3rd Party 76% 97% 100% - - - - - - - - - - - 100% - - - - - - - - 100% Equipment Failure 24% 3% - 93% 97% - - - - - - - - - - - - - - - - - - - Operation - - - 7% 3% - 12% 7% 53% 100% 100% - 100% 100% - - - - - - - 100% 100% - Other - - - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - 79% 90% 47% - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - 9% 3% - - - - - - - - - - - - - - - - DUNNING(12KV) - Customers: 1,350 104.4 0.4 2.9 50.6 1.0-1.6 0.0 - - - - - - - - - - - - - - - - 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 77% 50% 65% - - - - - - - - - - - - - - - - - - - - - Operation 23% 50% - 100% 100% - 100% 100% - - - - - - - - - - - - - - - - Other - - - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - 35% - - - - - - - - - - - - - - - - - - - - - FEDERER(12KV) - Customers: 2,552 160.1 1.9-8.8 0.0-35.0 2.0 2.0 - - - 3.6 0.0 - - - 1.0 - - - 3.6 0.0 1.0 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 91% 97% - - - - 31% 50% 100% - - - - - - - - - - - - - - - Operation 9% 3% - 100% 100% - 69% 50% - - - - 100% 100% - - - 100% - - - 100% 100% 100% Other - - - - - - - - - - - - - - - - - - - - - - - - 19

Reliability Histories for Individual Circuits Serving Fontana - 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 FLATCAR(12KV) - Customers: 858 58.3 1.0 4.0 - - 2.1 29.0 0.1 1.0 120.3 1.0 1.0 5.4 0.0 1.0 - - - 2.2 0.0 1.0 127.8 1.0 3.0 3rd Party - - - - - - - - - - - - - - - - - - - - 100% - - 33% Equipment Failure 82% 13% - - - 49% 95% 51% - - - - 100% 100% - - - - - - - 4% 1% - Operation 18% 87% 25% - - 2% 5% 49% - - - - - - - - - - 100% 100% - 2% 2% - Other - - - - - - - - 100% - - - - - 100% - - - - - - - - 33% Vegetation/Animal - - 50% - - - - - - - - 100% - - - - - - - - - - - 33% Weather/Fire/Earthquake - - 25% - - 49% - - - 100% 100% - - - - - - - - - - 94% 97% - HASTY(12KV) - Customers: 950 22.9 1.0 14.0 68.3 1.3 18.1 2.3 0.0 - - - - - - - - - - - - - - - - 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 100% 100% - - - - - - - - - - - - - - - - - - - - - - Operation - - - 100% 100% - 100% 100% - - - - - - - - - - - - - - - - Other 0% 0% 71% - - 6% - - - - - - - - - - - - - - - - - - Vegetation/Animal - - 7% - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - 21% - - 94% - - - - - - - - - - - - - - - - - - HEFTLER(12KV) - Customers: 285 60.5 0.7 1.0 151.6 1.0 2.0 30.9 0.4 1.0 - - - - - 1.0 - - 1.0 - - - - - 2.0 3rd Party 75% 90% 100% - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - 96% 99% - 69% 96% - - - - - - - - - - - - - - - - Operation 1% 7% - - - - 1% 1% - - - - - - - - - - - - - - - - Other - - - - - 50% - - 100% - - - - - - - - 100% - - - - - 50% Vegetation/Animal 24% 3% - 4% 1% 50% - - - - - - - - 100% - - - - - - - - 50% Weather/Fire/Earthquake - - - - - - 30% 4% - - - - - - - - - - - - - - - - HIBISCUS(4.16KV) - Customers: 346 362.6 5.0-378.1 3.0 2.1 1198.3 4.0 4.7 61.8 1.0 - - - - 29.7 0.1-48.8 2.0-140.3 3.1-3rd Party 92% 60% - - - - 8% 25% 36% - - - - - - - - - - - - - - - Equipment Failure - - - 85% 66% 52% - - - 100% 100% - - - - - - - - - - 44% 32% - Operation - - - - - 48% - - - - - - - - - 100% 100% - 21% 50% - 28% 36% - Other 5% 40% - 12% 33% - 5% 25% 64% - - - - - - - - - 79% 50% - 28% 32% - Vegetation/Animal - - - - - - 87% 50% - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 3% 1% - 3% 0% - - - - - - - - - - - - - - - - - - - 20

Reliability Histories for Individual Circuits Serving Fontana - 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 HOPPER(12KV) - Customers: 1,708 46.3 0.1 3.0 36.5 0.1 1.0 175.3 0.6 0.4 29.5 0.1 2.0 35.7 0.1 - - - - 140.9 0.3 1.7 206.0 0.5 3.7 3rd Party - - - 3% 12% 100% - - - - - - - - - - - - - - - - - - Equipment Failure 93% 72% 33% 64% 42% - 1% 1% - - - - 85% 23% - - - - 100% 100% 41% 83% 64% 19% Operation 7% 28% - 32% 46% - 6% 6% - 91% 94% - - - - - - - - - - 13% 19% - Other - - 33% - - - - - - - - - 15% 77% - - - - - - 59% 3% 16% 27% Vegetation/Animal - - 33% - - - - - - - - 50% - - - - - - - - - - - 27% Weather/Fire/Earthquake - - - - - - 93% 94% 100% 9% 6% 50% - - - - - - - - - 1% 1% 27% HUFF(12KV) - Customers: 2,069 56.6 0.4 2.0 79.6 1.1-126.3 1.1 2.9 - - - 18.1 0.1-3.2 0.0-83.0 1.1-104.4 1.2-3rd Party 19% 12% 100% 81% 93% - 11% 4% 100% - - - - - - 40% 79% - - - - 1% 1% - Equipment Failure 39% 7% - 4% 1% - 18% 90% - - - - - - - 60% 21% - 1% 0% - 2% 0% - Operation 42% 81% - 0% 0% - 0% 1% - - - - 100% 100% - - - - - - - 17% 12% - Other - - - - - - - - - - - - - - - - - - 99% 100% - 79% 87% - Weather/Fire/Earthquake - - - 15% 6% - 71% 6% - - - - - - - - - - - - - - - - JUNIOR(12KV) - Customers: 2,718 107.0 1.2 3.9 37.7 1.0 1.0 51.7 1.0 - - - - 33.5 1.0-3.1 0.0 - - - - 36.7 1.0-3rd Party 27% 12% 50% 34% 3% - - - - - - - 100% 100% - - - - - - - 91% 98% - Equipment Failure 71% 86% 24% - - - 99% 99% - - - - - - - - - - - - - - - - Operation 2% 2% - 66% 97% - 1% 1% - - - - - - - 100% 100% - - - - 9% 2% - Other - - - - - 100% - - - - - - - - - - - - - - - - - - Vegetation/Animal - - 25% - - - - - - - - - - - - - - - - - - - - - KAISER(12KV) - Customers: 1,192 - - - 20.5 1.0 1.0 133.0 0.6 1.0 - - - - - - 1.9 0.0 - - - - 1.9 0.0-3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - - - 100% 81% 79% - - - - - - - - - - - - - - - - Operation - - - 100% 100% - 19% 21% - - - - - - - 100% 100% - - - - 100% 100% - Other - - - - - - - - 100% - - - - - - - - - - - - - - - 21

Reliability Histories for Individual Circuits Serving Fontana - 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 LYTLE(12KV) - Customers: 1,605 83.2 3.2 1.0 17.8 0.1 2.0 41.6 0.2 2.0 0.3 0.0-21.3 0.4 - - - - 209.8 4.0 0.0 231.5 4.4 0.0 3rd Party 56% 63% 2% - - - - - - - - - - - - - - - 43% 25% 100% 39% 22% 100% Equipment Failure 36% 5% - 89% 98% - 61% 44% - 20% 50% - 100% 100% - - - - - - - 9% 10% - Operation 8% 32% - 1% 1% - 39% 56% - 80% 50% - - - - - - - - - - 0% 0% - Other - - 98% - - 100% - - 50% - - - - - - - - - 57% 75% - 52% 67% - Weather/Fire/Earthquake - - - 10% 2% - - - 50% - - - - - - - - - - - - - - - MANNING(12KV) - Customers: 1,278 121.0 1.3 0.2 - - 1.0 272.3 3.0 5.9 6.5 0.0-14.8 0.1 - - - 1.0 43.1 0.9-64.5 1.0 1.0 3rd Party - - - - - - 39% 33% 15% - - - - - - - - - - - - - - - Equipment Failure 26% 7% 11% - - 100% 34% 33% 51% - - - 97% 83% - - - - 100% 100% - 89% 95% - Operation 74% 93% 89% - - - 0% 0% - 100% 100% - 3% 17% - - - - - - - 11% 5% - Other - - - - - - - - 17% - - - - - - - - 100% - - - - - 100% Vegetation/Animal - - - - - - - - 17% - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - 27% 33% - - - - - - - - - - - - - - - - MANTECA(12KV) - Customers: 1,733 - - 1.0 55.7 1.0 - - - - - - - 10.8 0.1-77.4 0.7 - - - - 88.2 0.7-3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - - - - - - - - - - 100% 100% - - - - - - - 12% 10% - Operation - - - 100% 100% - - - - - - - - - - 100% 100% - - - - 88% 90% - Other - - - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - - - - - MARBLE(12KV) - Customers: 346 - - - 136.3 2.1-73.4 0.1 1.0 - - - 59.4 0.1 2.0 - - - 6.0 0.0-65.4 0.2 2.0 3rd Party - - - 51% 47% - 91% 78% - - - - - - - - - - - - - - - - Equipment Failure - - - 32% 47% - 9% 22% 100% - - - 100% 100% 50% - - - - - - 91% 88% 50% Operation - - - 17% 6% - - - - - - - - - - - - - 100% 100% - 9% 13% - Other - - - - - - - - - - - - - - 50% - - - - - - - - 50% 22

Reliability Histories for Individual Circuits Serving Fontana - 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 MERRIL(4.16KV) - Customers: 722 3.5 0.0 1.0 59.5 1.1 1.0 148.7 2.2 2.0 - - - 104.0 1.0-63.1 1.4 0.9 201.5 1.7 0.5 368.7 4.1 1.4 3rd Party - - - - - - 79% 47% 50% - - - 95% 99% - - - - - - - 27% 24% - Equipment Failure 100% 100% - 2% 1% - 4% 2% - - - - - - - - - - 56% 40% 100% 31% 16% 36% Operation - - - 98% 99% - 17% 52% - - - - 5% 1% - 16% 70% - - - - 4% 25% - Other - - - - - 100% - - 50% - - - - - - 84% 30% 100% 44% 60% - 38% 35% 64% Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - - - - - MORA(12KV) - Customers: 1,773 3.3 0.0 1.1 126.3 1.3 1.2 21.3 0.1 0.2 - - - 301.0 2.1 0.1 - - - - - - 301.0 2.1 0.1 3rd Party - - - 5% 5% 100% 56% 49% 47% - - - 58% 48% 100% - - - - - - 58% 48% 100% Equipment Failure 11% 27% - - - - - - 27% - - - 42% 50% - - - - - - - 42% 50% - Operation 89% 73% - 88% 90% - 44% 51% - - - - 0% 2% - - - - - - - 0% 2% - Other - - 5% - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - 95% 1% 0% - - - 27% - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 7% 5% - - - - - - - - - - - - - - - - - - - NASTASE(12KV) - Customers: 83 72.8 1.0 - - - - 9.1 0.0 1.0 20.2 0.0 1.0 - - - - - - - - - 20.2 0.0 1.0 3rd Party 100% 100% - - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - - - - 100% 100% - 100% 100% 100% - - - - - - - - - 100% 100% 100% Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - - - 100% - - - - - - - - - - - - - - - NICKLIN(12KV) - Customers: 1,734 16.1 1.0 2.0 18.1 0.6-4.7 0.0 - - - - - - - - - - 54.1 1.0-54.1 1.0-3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - - - - - - - - - - - - - - - - 100% 100% - 100% 100% - Operation 100% 100% - 100% 100% - - - - - - - - - - - - - - - - - - - Other - - - - - - 100% 100% - - - - - - - - - - - - - - - - Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - - - - - 23

Reliability Histories for Individual Circuits Serving Fontana - 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 REDBALL(12KV) - Customers: 305 126.2 1.0 0.3 0.3 0.0 2.9 340.0 2.9 0.8 - - 1.0 - - - - - - - - 1.0 - - 2.0 3rd Party - - - 100% 100% 66% - - - - - - - - - - - - - - 100% - - 50% Equipment Failure 100% 100% 100% - - - 100% 100% - - - - - - - - - - - - - - - - Operation - - - - - - - - 100% - - - - - - - - - - - - - - - Other - - - - - 34% - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - 100% - - - - - - - - - - - 50% ROCHHOLTZ(4.16KV) - Customers: 714 369.6 5.1 1.0 146.5 2.0 1.0 1116.7 3.0 2.0 62.1 1.0 - - - - - - - 54.7 2.0-116.8 3.0-3rd Party 92% 60% - - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - 68% 50% - 0% 0% - 100% 100% - - - - - - - 11% 1% - 58% 34% - Operation - - - - - - - - - - - - - - - - - - 18% 49% - 9% 33% - Other 5% 40% 100% 30% 49% 100% 5% 33% 100% - - - - - - - - - 71% 49% - 33% 33% - Vegetation/Animal - - - - - - 95% 66% - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 4% 0% - 3% 0% - - - - - - - - - - - - - - - - - - - SAMPRAS(12KV) - Customers: 90 - - - - - - 19.1 1.0 1.0 - - - 119.6 1.0 - - - - - - 2.0 119.6 1.0 2.0 3rd Party - - - - - - 100% 100% 100% - - - 100% 100% - - - - - - - 100% 100% - Equipment Failure - - - - - - - - - - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - 100% - - 100% SANBER(12KV) - Customers: 2,965 67.5 0.1 2.5 38.9 0.7 3.3 35.5 0.1 9.0 30.3 0.1-12.1 0.0 3.0 5.9 0.0 0.7 54.2 2.1 2.0 102.5 2.2 5.7 3rd Party 42% 47% 74% - - - 1% 2% 11% - - - - - 100% - - - - - - - - 53% Equipment Failure 39% 19% - 89% 96% 70% 83% 59% - 100% 100% - 79% 63% - 27% 24% - - - - 41% 4% - Operation 18% 34% 26% 1% 2% 30% 1% 5% - - - - 21% 37% - 73% 76% 100% - - - 7% 1% 12% Other - - - 1% 0% - 5% 16% 33% - - - - - - - - - - - 50% - - 18% Vegetation/Animal - - - - - - 10% 16% 11% - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 9% 1% - - - 45% - - - - - - - - - 100% 100% 50% 53% 95% 18% 24

Reliability Histories for Individual Circuits Serving Fontana - 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 SANDELL(12KV) - Customers: 1,762 - - 1.0 49.0 1.0 1.0 - - - - - 1.0 38.9 0.2-22.5 0.1 - - - - 61.4 0.3 1.0 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - - - - - - - - - - - - - 100% 100% - - - - 37% 18% - Operation - - - 100% 100% - - - - - - - 100% 100% - - - - - - - 63% 82% - Other - - - - - 100% - - - - - 100% - - - - - - - - - - - 100% Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - - - - - SELLERS(12KV) - Customers: 2,218 - - - 2.5 0.0 - - - - 0.2 0.0 - - - - - - - - - - 0.2 0.0-3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - 74% 75% - - - - - - - - - - - - - - - - - - - Operation - - - 26% 25% - - - - 100% 100% - - - - - - - - - - 100% 100% - Other - - - - - - - - - - - - - - - - - - - - - - - - SHINE(12KV) - Customers: 2,124 3.6 0.0 1.0 21.1 1.0-2.4 0.0 1.0 0.1 0.0-30.0 0.4-6.5 0.1 - - - - 36.5 0.4-3rd Party - - - - - - - - - - - - 92% 99% - - - - - - - 75% 85% - Equipment Failure - - - 7% 0% - 6% 3% - - - - - - - - - - - - - - - - Operation 100% 100% - 93% 100% - 41% 12% - 100% 100% - 8% 1% - 100% 100% - - - - 25% 15% - Other - - - - - - 53% 85% 100% - - - - - - - - - - - - - - - Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - - - - - SILVA(12KV) - Customers: 1,781 2.1 0.0 1.0 49.0 1.0-153.2 0.8 - - - - - - 1.0 - - - 32.9 1.0 2.0 32.9 1.0 3.0 3rd Party - - - - - - - - - - - - - - - - - - 100% 100% 100% 100% 100% 67% Equipment Failure - - - - - - - - - - - - - - - - - - - - - - - - Operation 100% 100% - 100% 100% - 100% 100% - - - - - - - - - - - - - - - - Other - - - - - - - - - - - - - - 100% - - - - - - - - 33% Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - - - - - 25

Reliability Histories for Individual Circuits Serving Fontana - 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 SPEEDWAY(12KV) - Customers: 155 125.4 1.0 2.0 - - 1.0 257.3 2.1 12.4 324.6 1.0 4.9 1.0 0.0 1.0 - - - 0.1 0.0 2.0 325.8 1.0 7.9 3rd Party 96% 95% - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 4% 5% - - - - 79% 51% 2% - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - 100% 100% 50% 0% 2% 12% Other - - 100% - - 100% - - 74% - - - 100% 100% 100% - - - - - 50% 0% 2% 25% Weather/Fire/Earthquake - - - - - - 21% 49% 25% 100% 100% 100% - - - - - - - - - 100% 96% 63% SPIKE(12KV) - Customers: 1,210 152.5 2.1-46.9 0.1 1.0 - - 2.0 - - 1.0 - - - 3.6 0.1-0.3 0.0-3.9 0.1 1.0 3rd Party - - - - - 100% - - 50% - - - - - - - - - - - - - - - Equipment Failure 95% 51% - 96% 87% - - - - - - - - - - - - - 100% 100% - 7% 2% - Operation 5% 49% - 4% 13% - - - - - - - - - - 100% 100% - - - - 93% 98% - Other - - - - - - - - 50% - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - 100% - - - - - - - - - - - 100% STREAMLINER(12KV) - Customers: 885 223.9 0.2-0.4 0.0 1.0 132.9 1.1 0.8 - - 1.0 10.8 1.0 1.0 6.3 0.0 - - - - 17.1 1.0 2.0 3rd Party - - - - - - 96% 99% 100% - - - 100% 100% 100% 74% 67% - - - - 90% 99% 50% Equipment Failure - - - 42% 67% - - - - - - - - - - 26% 33% - - - - 10% 1% - Operation 100% 100% - - - - 4% 1% - - - - - - - - - - - - - - - - Other - - - - - 100% - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - 100% - - - - - - - - - - - 50% Weather/Fire/Earthquake - - - 58% 33% - - - - - - - - - - - - - - - - - - - TAMARIND(12KV) - Customers: 2,301 10.6 0.0-265.7 2.1 4.0 368.2 3.1 2.6 - - - 0.5 0.0-1.7 0.0 - - - - 2.2 0.0-3rd Party - - - - - - 27% 33% 38% - - - - - - - - - - - - - - - Equipment Failure 53% 28% - 100% 100% 75% 70% 66% 62% - - - - - - 100% 100% - - - - 77% 66% - Operation 47% 72% - - - - 1% 1% - - - - 100% 100% - - - - - - - 23% 34% - Other - - - - - 25% - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - 3% 1% - - - - - - - - - - - - - - - - 26

Reliability Histories for Individual Circuits Serving Fontana - 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 TENDER(12KV) - Customers: 1,428 2.9 0.0-36.9 2.1-213.1 2.0 1.0 127.9 2.0 2.0 18.3 0.1 - - - - 4.2 0.0 1.0 150.4 2.1 3.0 3rd Party - - - - - - 42% 49% - - - - - - - - - - - - - - - - Equipment Failure - - - 23% 1% - - - - 11% 50% 50% 100% 100% - - - - - - - 21% 51% 33% Operation 100% 100% - 77% 99% - 0% 0% - - - - - - - - - - 100% 100% - 3% 1% - Other - - - - - - - - 100% - - - - - - - - - - - 100% - - 33% Vegetation/Animal - - - - - - - - - - - 50% - - - - - - - - - - - 33% Weather/Fire/Earthquake - - - - - - 58% 51% - 89% 50% - - - - - - - - - - 76% 48% - TILDEN(12KV) - Customers: 45 - - - 192.9 2.0 2.0 - - - - - - - - - - - - - - - - - - 3rd Party - - - 34% 50% 50% - - - - - - - - - - - - - - - - - - Equipment Failure - - - 66% 50% - - - - - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - - - - 50% - - - - - - - - - - - - - - - - - - TOKAY(12KV) - Customers: 2,377 8.7 0.0 2.0 78.3 1.8 3.0 26.5 0.0 2.0 - - - 19.2 0.7-1.2 0.0 1.0 52.2 1.0-72.5 1.8 1.0 3rd Party - - - 6% 40% 33% - - 50% - - - - - - - - - - - - - - - Equipment Failure 45% 33% 50% 77% 56% 33% 86% 61% - - - - 4% 0% - - - - 100% 100% - 73% 57% - Operation 55% 67% - 18% 3% - - - - - - - 96% 100% - 100% 100% - - - - 27% 43% - Other - - 50% - - 34% - - 50% - - - - - - - - 100% - - - - - 100% Vegetation/Animal - - - - - - 14% 39% - - - - - - - - - - - - - - - - TRACTOR(12KV) - Customers: 321 - - - - - 1.0 3.1 0.0-5.3 0.0 - - - - 10.5 1.0 1.0 48.6 2.2-64.4 3.2 1.0 3rd Party - - - - - 100% - - - - - - - - - - - 100% - - - - - 100% Equipment Failure - - - - - - - - - 100% 100% - - - - - - - 100% 100% - 84% 68% - Operation - - - - - - 100% 100% - - - - - - - 100% 100% - - - - 16% 32% - Other - - - - - - - - - - - - - - - - - - - - - - - - 27

Reliability Histories for Individual Circuits Serving Fontana - 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 TRAPP(12KV) - Customers: 2,672 1.7 0.0-41.1 1.4-34.1 0.0 1.0 11.6 1.0-39.1 0.2-11.7 0.0 1.0 8.0 0.0-70.4 1.3 1.0 3rd Party - - - - - - - - - - - - - - - - - 100% - - - - - 100% Equipment Failure - - - 64% 4% - 100% 100% - - - - 100% 100% - 8% 2% - 100% 100% - 68% 17% - Operation 100% 100% - 36% 96% - - - - 100% 100% - - - - 82% 87% - - - - 30% 83% - Other - - - - - - - - 100% - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - - - - - - - - - - 10% 11% - - - - 2% 0% - WAHLSTROM(12KV) - Customers: 2,403 29.1 0.1 2.0 43.8 1.4 2.0 192.9 2.1 1.0 - - - 1.2 0.0-10.7 0.8 2.0 58.6 0.9 1.0 70.5 1.7 3.0 3rd Party - - - - - - 77% 53% 99% - - - - - - - - - 41% 4% 100% 34% 2% 33% Equipment Failure 67% 44% - 65% 26% 49% 22% 46% - - - - 100% 100% - - - - - - - 2% 0% - Operation 33% 56% - 35% 74% - 1% 1% 1% - - - - - - 100% 100% - 59% 96% - 64% 98% - Other - - - - - 51% - - - - - - - - - - - 50% - - - - - 33% Vegetation/Animal - - 50% - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - 50% - - - - - - - - - - - - - - 50% - - - - - 33% WIGWAG(12KV) - Customers: 2,163 79.7 0.2 1.0 98.8 1.8 0.3 0.9 0.0 - - - 1.0 3.6 0.0 - - - 2.0 78.6 1.0-82.2 1.0 3.0 3rd Party - - - - - - - - - - - - - - - - - - 100% 100% - 96% 98% - Equipment Failure 100% 100% - 97% 96% 100% - - - - - - - - - - - - - - - - - - Operation - - - 0% 4% - 100% 100% - - - - 100% 100% - - - - - - - 4% 2% - Other - - 100% - - - - - - - - - - - - - - 100% - - - - - 67% Vegetation/Animal - - - - - - - - - - - 100% - - - - - - - - - - - 33% Weather/Fire/Earthquake - - - 2% 0% - - - - - - - - - - - - - - - - - - - ZIMMER(12KV) - Customers: 1,089 443.8 1.0 1.0 241.1 2.1 4.8 8.1 0.1 2.0 2.4 0.0-3.3 0.0-9.0 1.0 1.0 55.5 1.0-70.2 2.1 1.0 3rd Party 99% 99% - - - - - - 100% - - - - - - - - 100% - - - - - 100% Equipment Failure - - - 78% 48% 38% - - - - - - - - - - - - - - - - - - Operation - - - 22% 52% - 100% 100% - - - - 100% 100% - 92% 100% - 100% 100% - 96% 99% - Other - - - - - 62% - - - 100% 100% - - - - - - - - - - 3% 1% - Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 1% 1% - - - - - - - - - - - - - 8% 0% - - - - 1% 0% - 28

Reliability Histories for Individual Circuits Serving Fontana - 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 ZINFANDEL(12KV) - Customers: 1,996 4.6 0.0 1.0 19.4 0.1 1.0 109.0 2.7 3.0 - - 1.0 14.9 0.0 1.0 0.1 0.0 1.0 - - 1.0 14.9 0.0 4.0 3rd Party - - 100% 39% 30% - 4% 18% 33% - - - 98% 98% - - - - - - 100% 97% 92% 25% Equipment Failure 48% 10% - 57% 21% 100% - - - - - - 2% 2% - - - - - - - 2% 2% - Operation 52% 90% - 4% 49% - 23% 38% - - - - - - - 100% 100% - - - - 0% 6% - Other - - - - - - - - 67% - - 100% - - 100% - - 100% - - - - - 75% Vegetation/Animal - - - - - - 73% 44% - - - - - - - - - - - - - - - - 29