Circuit Reliability Review

Circuit Reliability Review Tulare District 4 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 SAN JOAQUIN District CityList1 ARMONA COUNTY OF TULARE DELANO DUCOR EARLIMART EAST PORTERVILLE EXETER FARMERSVILLE GOSHEN HANFORD IVANHOE KINGS COUNTY LEMON COVE LINDSAY MCFARLAND PIXLEY POPLAR-COTTON CENTER PORTERVILLE RICHGROVE SPRINGVILLE STRATHMORE TERRA BELLA THREE RIVERS TIPTON VISALIA WOODLAKE WOODVILLE CITY OF TULARE TULE RIVER INDIAN TRIBE 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 Tulare District 4 CircuitList1 There are 25 circuits that serve Tulare District 4 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers BIGFOOT(4.16KV) 48 - - - CLANCY(12KV) 155 - - - CURTIS(12KV) 384 - - - CUTLER(12KV) 1,571 - - - GARCIA(12KV) 1,631 - - - GILA(12KV) 1,016 - - - HARRELL(12KV) 1,256 - - - HOMER(12KV) 173 - - - LINNELL(12KV) 1,503 - - - MERRYMAN(12KV) 451 - - - MISSISSIPPI(12KV) 1,307 - - - MOFFITT(12KV) 146 - - - ORANGE BLOSSOM(12KV 1,145 - - - RASMUSSEN(12KV) 209 - - - REDBANKS(12KV) 1,959 - - - SALT CREEK(12KV) 671 - - - SEQUOIA(12KV) 332 - - - SEVILLE(12KV) 201 - - - ST. JOHNS(12KV) 1,497 - - - TARUSA(12KV) 439 - - - TERMINUS(12KV) 302 - - - TWIN BUTTE(12KV) 629 - - - VIRGIL(12KV) 617 - - - WEBB(12KV) 222 - - - WELLS(12KV) 1,569 - - - - - - - - - - - - - - - - - - - - - - - Grand Total 19,433 7

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Causes of Repair Outages in Tulare District 4 2017 SAIDIChart Weather /Fire /Earthquake Vegetation /Animal 3.3% 1.7% 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 40.6% 3rd Party 15.4% Equipment Failure 32.1% 3rd Party Equipment Failure Operation Other Operation 6.9% 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 Tulare District 4 2017 SAIFIChart Weather /Fire /Earthquake 4.3% Contributions to SAIFI by Outage Cause Vegetation /Animal 4.1% 3rd Party 12.0% 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 52.8% Equipment Failure 23.1% Operation 3.8% 3rd Party Equipment Failure Operation Other Vegetation /Animal Weather /Fire /Earthquake SAIFI = the number of times the average customer is interrupted by sustained outages each year 10

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Back-up Slides Reliability Histories of Circuits Serving Tulare District 4 Updated through Dec 2017

Average Reliability of 25 Circuits Serving Tulare District 4 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 25 Circuits Serving Tulare District 4 -- Total Customers: 19,433 153.8 1.5 1.5 93.0 1.1 2.2 91.8 0.9 1.3 8.1 0.1 0.4 27.5 0.2 0.6 24.2 0.2 0.2 50.8 1.1 0.3 110.6 1.7 1.4 3rd Party 13% 14% 12% 29% 36% 12% 10% 13% 21% 31% 48% - 38% 46% 10% 7% 12% 54% 5% 1% - 15% 12% 10% Equipment Failure 32% 44% 29% 29% 32% 12% 41% 35% 8% 32% 3% 55% 54% 39% 4% 54% 55% 24% 10% 15% 13% 32% 23% 23% Operation 7% 9% 4% 6% 8% 13% 10% 12% 1% 9% 5% 2% 1% 0% 9% 26% 12% - 1% 3% - 7% 4% 4% Other 23% 18% 18% 19% 11% 42% 31% 23% 43% 3% 2% - 4% 1% 39% 2% 1% 11% 84% 81% 87% 41% 53% 33% Vegetation/Animal 1% 4% 13% 9% 12% 12% 7% 18% 25% - - 14% 2% 8% 37% 5% 20% 11% - - - 2% 4% 20% Weather/Fire/Earthquake 23% 11% 24% 7% 1% 9% 1% 0% 2% 24% 43% 29% 1% 5% 2% 5% 1% - 1% 1% - 3% 4% 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 Tulare District 4-1 of 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 BIGFOOT(4.16KV) - Customers: 48 746.0 8.0 4.0 - - 6.0 2324.9 4.6 2.0 - - CircuitHistory - - - 2.0 - - - 189.0 3.0-189.0 3.0 2.0 3rd Party - - - - - - - - - - - 1- - - - - - - - - - - - - Equipment Failure 31% 50% 25% - - - 63% 22% - - - - - - - - - - - - - - - - Operation 20% 13% - - - 17% 16% 14% - - - - - - - - - - - - - - - - Other 49% 38% 25% - - 67% 22% 65% 49% - - - - - - - - - 100% 100% - 100% 100% - Vegetation/Animal - - - - - 17% - - 51% - - - - - 100% - - - - - - - - 100% Weather/Fire/Earthquake - - 50% - - - - - - - - - - - - - - - - - - - - - CLANCY(12KV) - Customers: 155 221.4 1.5 4.0 146.3 1.9 3.6 25.8 0.6 0.3 4.5 0.0 1.0 23.4 0.3 - - - - - - 1.0 27.9 0.3 2.0 3rd Party - - - 24% 54% 27% 27% 51% 100% - - - - - - - - - - - - - - - Equipment Failure 93% 33% 25% 37% 16% 8% 5% 2% - - - - 100% 100% - - - - - - - 84% 96% - Operation 7% 67% - 14% 14% - 68% 47% - 100% 100% 100% - - - - - - - - - 16% 4% 49% Other - - - - - 9% - - - - - - - - - - - - - - 100% - - 51% Vegetation/Animal - - 50% - - 56% - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - 25% 25% 16% - - - - - - - - - - - - - - - - - - - CURTIS(12KV) - Customers: 384 5.4 0.1 0.1 96.7 0.2 2.1 92.2 0.7 0.2 - - - 0.3 0.0-20.8 0.1 0.4 74.9 1.2 0.1 96.1 1.3 0.6 3rd Party - - - 54% 44% - 49% 73% - - - - - - - - - - 48% 31% - 38% 29% - Equipment Failure 75% 21% - 35% 37% - 0% 1% - - - - 100% 100% - 31% 15% - - - - 7% 1% - Operation 25% 79% - 0% 5% - - - - - - - - - - 9% 12% - - - - 2% 1% - Other - - 100% - - - 16% 20% 43% - - - - - - - - 100% 52% 69% 100% 40% 63% 100% Vegetation/Animal - - - - - 53% - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 11% 14% 47% 34% 7% 57% - - - - - - 60% 73% - - - - 13% 6% - CUTLER(12KV) - Customers: 1,571 51.4 1.0 1.0 9.7 0.1 2.0 38.2 0.1 1.0 - - - 21.5 0.1 1.0 172.6 0.7 0.5 48.5 1.1 0.3 242.6 1.9 1.8 3rd Party - - - 16% 15% 52% - - 100% - - - - - - - - - - - - - - - Equipment Failure 92% 98% - 4% 3% - 69% 30% - - - - 100% 100% - 65% 77% 100% 10% 6% - 57% 38% 28% Operation 1% 1% - 80% 82% 48% 25% 60% - - - - - - - 35% 23% - - - - 25% 9% - Other - - - - - - 6% 11% - - - - - - 100% - - - 90% 94% 100% 18% 54% 72% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 8% 1% 100% - - - - - - - - - - - - - - - - - - - - - 15

Reliability Histories for Individual Circuits Serving Tulare District 4-2 of 7 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 GARCIA(12KV) - Customers: 1,631 122.5 1.1-8.7 0.1 1.0 57.8 1.7 1.5 - - - 21.3 0.0-35.2 1.0-44.0 1.0-100.6 2.1-3rd Party - - - 52% 11% - - - - - - - - - - - - - - - - - - - Equipment Failure 96% 98% - - - - 44% 58% 17% - - - 100% 100% - 96% 98% - - - - 55% 50% - Operation 4% 2% - 48% 89% 100% - - - - - - - - - 4% 2% - - - - 1% 1% - Other - - - - - - - - - - - - - - - - - - 100% 100% - 44% 49% - Vegetation/Animal - - - - - - 56% 42% 83% - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - - GILA(12KV) - Customers: 1,016 2.3 0.1-30.7 0.1 1.9 1.5 0.0-37.3 0.2 1.8 - - - 3.5 0.0-4.2 0.0-45.1 0.3 1.8 3rd Party - - - 11% 14% 53% - - - - - - - - - - - - - - - - - - Equipment Failure 57% 1% - 41% 16% - - - - 35% 9% - - - - - - - 100% 100% - 39% 18% - Operation 43% 99% - - - - - - - - - - - - - - - - - - - - - - Other - - - - - - 100% 100% - - - - - - - - - - - - - - - - Vegetation/Animal - - - 44% 68% 47% - - - - - - - - - 100% 100% - - - - 8% 1% - Weather/Fire/Earthquake - - - 4% 1% - - - - 65% 91% 100% - - - - - - - - - 54% 81% 100% HARRELL(12KV) - Customers: 1,256 78.3 1.6 3.4 111.2 0.7 4.4 0.2 0.0 0.9 0.7 0.0-358.5 2.9 1.9 - - - 66.4 0.8 0.8 425.6 3.6 2.6 3rd Party 92% 63% - - - - - - - - - - 29% 44% 60% - - - - - - 25% 35% 42% Equipment Failure 1% 0% - 72% 83% 10% - - - - - - 71% 56% - - - - 100% 100% 100% 75% 65% 29% Operation 8% 37% 12% 1% 1% - 100% 100% - 100% 100% - - - 40% - - - - - - 0% 0% 29% Other - - 88% 5% 11% 44% - - 100% - - - - - - - - - - - - - - - Vegetation/Animal - - - - - 23% - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 22% 6% 23% - - - - - - - - - - - - - - - - - - HOMER(12KV) - Customers: 173 58.1 1.5 5.5 9.1 0.5 5.5 33.6 1.0 2.5 - - - - - 2.0 16.7 0.0-73.4 2.4 1.0 90.1 2.4 3.0 3rd Party 63% 33% 9% - - - - - - - - - - - - - - - - - - - - - Equipment Failure 37% 67% - - - - 89% 95% - - - - - - - 100% 100% - - - - 19% 1% - Operation - - - 100% 100% 9% 11% 5% 19% - - - - - - - - - - - - - - - Other - - 36% - - 72% - - 41% - - - - - - - - - 100% 100% 100% 81% 99% 33% Vegetation/Animal - - 18% - - 18% - - 40% - - - - - 100% - - - - - - - - 67% Weather/Fire/Earthquake - - 37% - - - - - - - - - - - - - - - - - - - - - 16

Reliability Histories for Individual Circuits Serving Tulare District 4-3 of 7 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 LINNELL(12KV) - Customers: 1,503 34.4 0.3 1.0 162.2 2.1 4.0 53.5 1.4 0.6 7.2 0.0-0.4 0.0 - - - - 62.6 1.0-70.1 1.1-3rd Party 55% 88% - 49% 48% 25% 17% 24% 50% - - - - - - - - - 33% 3% - 30% 3% - Equipment Failure 20% 3% - 1% 0% 25% 0% 1% - - - - - - - - - - - - - - - - Operation - - - 11% 4% 25% 2% 0% - 100% 100% - - - - - - - - - - 10% 5% - Other - - 100% - - 25% - - - - - - 100% 100% - - - - 67% 97% - 60% 93% - Vegetation/Animal - - - 35% 48% - 81% 75% - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 25% 9% - 4% 0% - - - 50% - - - - - - - - - - - - - - - MERRYMAN(12KV) - Customers: 451 33.0 1.0-9.4 0.0-11.3 0.7 0.3 - - - 23.5 0.0-25.1 0.7 0.3 50.0 1.0-98.6 1.7 0.3 3rd Party - - - - - - - - - - - - - - - 95% 100% 100% - - - 24% 39% 100% Equipment Failure 27% 2% - - - - 6% 1% - - - - - - - 5% 0% - - - - 1% 0% - Operation 73% 98% - - - - 27% 3% - - - - - - - - - - - - - - - - Other - - - 100% 100% - 6% 1% - - - - 100% 100% - - - - 100% 100% - 75% 60% - Vegetation/Animal - - - - - - 60% 95% 100% - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - - MISSISSIPPI(12KV) - Customers: 1,307 365.1 3.0 1.0 2.0 0.1-8.1 0.0 0.9 10.6 0.6 0.4 28.1 0.1-0.9 0.0 1.0 5.6 0.1-45.1 0.8 1.4 3rd Party - - - - - - 16% 40% - - - - 98% 97% - - - 100% - - - 61% 7% 73% Equipment Failure 15% 55% 33% - - - 45% 20% - - - - 2% 3% - 100% 100% - - - - 3% 1% - Operation 0% 0% - 100% 100% - 3% 3% - - - - - - - - - - - - - - - - Other 1% 0% - - - - 12% 25% 100% - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 85% 44% 67% - - - 24% 13% - 100% 100% 100% - - - - - - 100% 100% - 36% 92% 27% MOFFITT(12KV) - Customers: 146 352.7 1.8 3.0 - - 7.0 75.5 1.0 1.9 - - - 8.4 0.0 2.0 121.0 1.0 0.2 43.2 1.0-172.6 2.0 2.2 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 3% 42% - - - 14% 100% 100% - - - - 92% 33% - 97% 99% - - - - 72% 50% - Operation - - - - - 14% - - - - - - 8% 67% - - - - - - - 0% 1% - Other 97% 58% - - - 57% - - 50% - - - - - - 3% 1% 100% 100% 100% - 27% 50% 10% Vegetation/Animal - - 33% - - 14% - - 50% - - - - - 100% - - - - - - - - 90% Weather/Fire/Earthquake - - 67% - - - - - - - - - - - - - - - - - - - - - 17

Reliability Histories for Individual Circuits Serving Tulare District 4-4 of 7 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 ORANGE BLOSSOM(12KV) - Customers: 1,145 125.7 1.4-82.0 0.6 0.6 31.5 1.1 1.2 41.7 1.0-58.0 0.7-0.7 0.0-73.8 3.0 1.3 174.3 4.7 1.3 3rd Party - - - - - - 83% 97% 20% 98% 99% - 100% 100% - - - - - - - 57% 35% - Equipment Failure 0% 0% - 88% 99% - - - - - - - - - - - - - 32% 67% - 14% 43% - Operation 57% 37% - - - - 14% 3% - 2% 1% - - - - - - - - - - 0% 0% - Other - - - - - 100% 3% 0% - - - - - - - - - - 68% 33% 100% 29% 21% 100% Vegetation/Animal 24% 59% - - - - - - 80% - - - - - - 100% 100% - - - - 0% 0% - Weather/Fire/Earthquake 18% 3% - 12% 1% - - - - - - - - - - - - - - - - - - - RASMUSSEN(12KV) - Customers: 209 270.3 2.3 2.8 - - 2.0 295.1 0.5 1.4 - - - 14.9 0.0 - - - - - - 1.2 14.9 0.0 1.2 3rd Party - - - - - - 96% 95% 100% - - - - - - - - - - - - - - - Equipment Failure 100% 100% 29% - - - 1% 2% - - - - - - - - - - - - - - - - Operation - - - - - - 3% 3% - - - - 100% 100% - - - - - - - 100% 100% - Other - - - - - - - - - - - - - - - - - - - - 100% - - 100% Vegetation/Animal - - 71% - - 100% - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - - REDBANKS(12KV) - Customers: 1,959 215.1 1.5 2.3 317.2 3.8 2.4 133.7 1.1 3.1 0.2 0.0-2.4 0.0-21.2 0.1-46.4 1.0-70.1 1.1-3rd Party 19% 38% - 20% 27% - 0% 0% 3% - - - - - - - - - - - - - - - Equipment Failure 80% 61% 83% 32% 43% 8% 38% 33% - - - - 20% 8% - - - - - - - 1% 0% - Operation 0% 0% - 0% 0% - 0% 0% - - - - 4% 8% - 40% 56% - - - - 12% 5% - Other 1% 0% 17% 47% 29% 88% 61% 66% 97% 100% 100% - 76% 85% - 16% 31% - 100% 100% - 74% 94% - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 1% 0% 4% - - - - - - - - - 44% 13% - - - - 13% 1% - SALT CREEK(12KV) - Customers: 671 440.2 7.6 3.3 49.3 0.0 8.0 507.7 3.1 1.0 - - - - - 2.0 - - - 242.2 3.7-242.2 3.7 2.0 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 27% 47% 6% 2% 9% 25% 1% 3% - - - - - - - - - - - - - - - - Operation 29% 14% - - - 13% - - - - - - - - - - - - 2% 14% - 2% 14% - Other 44% 39% 4% - - 50% 99% 97% 5% - - - - - - - - - 98% 86% - 98% 86% - Vegetation/Animal - - 30% - - 13% - - 95% - - - - - 100% - - - - - - - - 100% Weather/Fire/Earthquake - - 60% 98% 91% - - - - - - - - - - - - - - - - - - - 18

Reliability Histories for Individual Circuits Serving Tulare District 4-5 of 7 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 SEQUOIA(12KV) - Customers: 332 6.9 0.1 1.4 103.8 1.1 0.6 330.9 1.6 0.3 - - - 0.6 0.0 1.2 28.0 1.3 0.7 52.9 1.0-81.5 2.3 1.9 3rd Party - - - - - 100% 48% 11% - - - - - - - - - - - - - - - - Equipment Failure 91% 94% 29% 4% 1% - 50% 82% - - - - - - - - - - - - - - - - Operation 9% 6% - 22% 7% - 1% 5% - - - - 100% 100% 20% 12% 20% - - - - 5% 11% 13% Other - - - - - - 1% 2% 100% - - - - - 80% - - - 100% 100% - 65% 44% 52% Vegetation/Animal - - 71% 74% 92% - - - - - - - - - - 88% 80% 100% - - - 30% 44% 35% Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - - SEVILLE(12KV) - Customers: 201 209.0 1.2 0.6 - - 1.0 24.5 0.0 1.0 - - - 138.6 1.7 2.6 - - - 45.2 1.0-183.8 2.7 2.6 3rd Party 100% 100% 100% - - - - - - - - - 52% 21% 25% - - - - - - 40% 13% 25% Equipment Failure - - - - - - 100% 100% - - - - 3% 15% 38% - - - - - - 2% 9% 38% Operation - - - - - - - - - - - - - - - - - - 0% 2% - 0% 1% - Other - - - - - 100% - - 100% - - - 32% 5% - - - - 100% 98% - 49% 40% - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - - - - - - - 12% 59% 38% - - - - - - 9% 37% 38% ST. JOHNS(12KV) - Customers: 1,497 308.4 2.4 2.8 1.7 0.0 1.0 3.3 0.1 1.0 1.4 0.0 - - - - 0.2 0.0 0.1 45.0 1.0-46.6 1.0 0.1 3rd Party 45% 47% - - - - - - 100% - - - - - - - - - - - - - - - Equipment Failure 1% 1% 36% - - - 3% 1% - - - - - - - 100% 100% - - - - 0% 0% - Operation 2% 0% 36% 100% 100% - 89% 95% - - - - - - - - - - - - - - - - Other - - - - - 100% 8% 4% - 100% 100% - - - - - - 100% 100% 100% - 100% 100% 100% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 52% 52% 28% - - - - - - - - - - - - - - - - - - - - - TARUSA(12KV) - Customers: 439 0.6 0.0 0.5 139.8 1.9 3.1 11.9 0.1-7.1 0.0 - - - 1.0 - - - 46.4 1.0-53.4 1.0 1.0 3rd Party - - - - - - 13% 3% - - - - - - - - - - - - - - - - Equipment Failure 100% 100% 100% 100% 100% 38% 30% 33% - - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - - - - - - - Other - - - - - 62% 57% 64% - 100% 100% - - - 100% - - - 100% 100% - 100% 100% 100% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - - 19

Reliability Histories for Individual Circuits Serving Tulare District 4-6 of 7 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 TERMINUS(12KV) - Customers: 302 205.0 2.7 7.4 221.2 2.3 9.1 26.8 1.0 3.0 - - - 41.1 1.2 3.6 - - - 28.1 0.6 1.0 69.1 1.8 4.5 3rd Party - - 13% 17% 43% 5% - - - - - - - - - - - - - - - - - - Equipment Failure 100% 100% 33% 78% 30% 3% 100% 100% - - - - 0% 0% - - - - - - - 0% 0% - Operation - - - 5% 27% 5% - - - - - - 1% 1% - - - - - - - 1% 0% - Other - - 13% - - 55% - - 67% - - - - - 28% - - - 100% 100% 100% 41% 31% 44% Vegetation/Animal - - 13% - - 11% - - 33% - - - 99% 99% 72% - - - - - - 59% 68% 56% Weather/Fire/Earthquake - - 27% 0% 0% 22% - - - - - - - - - - - - - - - - - - TWIN BUTTE(12KV) - Customers: 629 227.0 1.0 2.7 26.4 1.0 3.0 25.5 1.1 1.1 0.1 0.0 - - - 0.8 48.2 0.5 0.4 46.4 1.0 0.4 94.8 1.5 1.6 3rd Party 11% 6% 11% 96% 99% - 13% 2% - - - - - - - 78% 82% 100% - - - 39% 27% 25% Equipment Failure 13% 35% 51% 2% 0% - 43% 5% - 100% 100% - - - 50% - - - - - - 0% 0% 25% Operation - - - 1% 1% - 31% 92% - - - - - - 50% 17% 17% - - - - 9% 6% 25% Other - - 38% - - 100% 14% 1% 100% - - - - - - 6% 1% - 100% 100% 100% 52% 67% 25% Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 76% 59% - - - - - - - - - - - - - - - - - - - - - - VIRGIL(12KV) - Customers: 617 79.7 0.8 1.4 182.1 3.0 2.6 5.0 0.1 1.1 - - - - - - 27.2 1.0 0.2 53.5 1.2-80.7 2.2 0.2 3rd Party 94% 99% 31% 38% 59% 17% - - - - - - - - - - - - - - - - - - Equipment Failure 2% 0% - 3% 5% 38% 48% 55% - - - - - - - 2% 0% - - - - 1% 0% - Operation 3% 1% - 1% 1% - 8% 3% - - - - - - - 30% 3% - 3% 18% - 12% 11% - Other 1% 0% - 22% 3% 7% 43% 42% 100% - - - - - - - - - 97% 82% - 64% 45% - Vegetation/Animal - - 69% 31% 33% - - - - - - - - - - 69% 97% 100% - - - 23% 45% 100% Weather/Fire/Earthquake - - - 5% 0% 38% - - - - - - - - - - - - - - - - - - WEBB(12KV) - Customers: 222 6.3 0.0 1.3 55.3 1.0 1.0 14.9 0.1 1.0 - - - - - - - - - 4.4 0.1-4.4 0.1-3rd Party 21% 31% - - - - 59% 47% 100% - - - - - - - - - - - - - - - Equipment Failure 49% 64% 80% 23% 2% - 36% 40% - - - - - - - - - - - - - - - - Operation - - - 75% 98% - - - - - - - - - - - - - 100% 100% - 100% 100% - Other - - - - - - 5% 14% - - - - - - - - - - - - - - - - Vegetation/Animal - - 13% - - 100% - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 30% 6% 6% 1% 0% - - - - - - - - - - - - - - - - - - - 20

Reliability Histories for Individual Circuits Serving Tulare District 4-7 of 7 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 WELLS(12KV) - Customers: 1,569 333.0 2.7 3.2 169.3 1.8 1.1 324.5 2.1 2.1 26.4 0.1 3.5 0.7 0.0 1.7 0.0 0.0 0.0 50.0 1.0 0.8 77.2 1.1 6.0 3rd Party - - 54% 69% 58% 6% 0% 1% - 6% 18% - - - - - - - - - - 2% 1% - Equipment Failure 6% 30% - 10% 39% - 74% 67% 48% 90% 59% 79% 100% 100% - - - - - - - 32% 3% 46% Operation 1% 3% - 2% 0% - 25% 32% 6% 4% 23% - - - - 100% 100% - - - - 1% 1% - Other 93% 67% - - - 6% - - - - - - - - 58% - - 100% 100% 100% 100% 65% 94% 30% Vegetation/Animal - - 21% 3% 2% - - - 46% - - 21% - - 42% - - - - - - - - 24% Weather/Fire/Earthquake 0% 0% 25% 15% 1% 88% - - - - - - - - - - - - - - - - - - 21