Circuit Reliability Review

Circuit Reliability Review Cypress 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 FULLERTON District CityList1 ANAHEIM BREA BUENA PARK CYPRESS EAST LA MIRADA FULLERTON HACIENDA HEIGHTS LA HABRA LA HABRA HEIGHTS LA MIRADA LA PALMA PLACENTIA ROWLAND HEIGHTS STANTON YORBA LINDA 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 Cypress CircuitList1 There are 24 circuits that serve Cypress 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers ANNETTE(12KV) 803 - - - BERNICE(12KV) 92 - - - BERTHA(12KV) 2,202 - - - CLAIR(12KV) 263 - - - CLAUDIA(12KV) 2,088 - - - DAFFODIL(12KV) 1,148 - - - DIANA(12KV) 1,541 - - - ECUADOR(12KV) 3,321 - - - FELA(12KV) 951 - - - FOXGLOVE(12KV) 1,440 - - - GRETA(12KV) 225 - - - HALIBUT(12KV) 796 - - - HEREFORD(12KV) 2,099 - - - JACQUE(12KV) 2,378 - - - KAREN(12KV) 2,349 - - - KATELLA(12KV) 1,211 - - - KRISTEN(12KV) 1,001 - - - MILDRED(12KV) 1,437 - - - RAVENNA(12KV) 2,094 - - - RZYSKI(12KV) 2,613 - - - STELLA(12KV) 2,697 - - - THORPE(12KV) 867 - - - TRINIDAD(12KV) 2,009 - - - VERBENA(12KV) 2,551 - - - - - - - - - - - - - - - - - - - - - - - - - - - Grand Total 38,176 7

Reliability History of Circuits Serving Cypress (No Exclusions) BarChart 2014 2015 2016 2017 SAIDI (average minutes of sustained interruptions) 160.0 140.0 120.0 100.0 80.0 60.0 40.0 20.0 47.5 112.1 114.8 91.3 83.9 134.5 139.7 99.9 Cypress 0.0 SAIFI (average frequency of sustained interruptions) 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0.5 1.0 1.0 0.9 1.0 1.1 0.9 1.2 SCE SYSTEMWIDE ** Exclusions are days which utilities are allowed to MAIFI (average frequency of momentary interruptions) 2.0 1.5 1.0 0.5 0.8 1.4 1.4 1.0 0.6 1.6 1.7 1.8 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 0.0 8

Causes of Repair Outages in Cypress 2017 SAIDIChart 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 Vegetation /Animal 2.0% Other 0.1% Weather /Fire /Earthquake 10.4% Operation 22.3% 3rd Party 25.1% Equipment Failure 40.2% 3rd Party Equipment Failure Operation Other Vegetation /Animal Weather /Fire /Earthquake SAIDI = the cumulative amount of time the average customer is interrupted by sustained outages each year. 9

Causes of Repair Outages in Cypress 2017 SAIFIChart Vegetation /Animal 1.6% Weather /Fire Other 0.0% /Earthquake 2.8% Contributions to SAIFI by Outage Cause Equipment Failure e.g., in-service failure of transformer, switch, or conductors Vegetation/Animal e.g., tree branch, rodent, or bird causing a short circuit between conductors Other e.g., patrolled but no cause found Operations e.g., urgent maintenance w/o 3-day notice 3 rd Party e.g., balloon, car hit pole, dig-in Operation 27.4% Equipment Failure 29.7% 3rd Party 38.5% 3rd Party Equipment Failure Operation Other Vegetation /Animal Weather /Fire /Earthquake SAIFI = the number of times the average customer is interrupted by sustained outages each year 10

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

Average Reliability of 24 Circuits Serving Cypress 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 24 Circuits Serving Cypress -- Total Customers: 38,176 47.5 0.5 0.8 91.3 1.0 1.0 83.9 1.0 0.6 38.8 0.3 0.6 17.1 0.2 0.4 15.9 0.2 0.4 28.0 0.2 0.3 99.9 0.9 1.7 3rd Party 26% 31% 29% 15% 45% 33% 5% 8% 41% 21% 54% 14% 48% 31% 77% 27% 54% 7% 16% 14% 39% 25% 39% 31% Equipment Failure 36% 13% 6% 50% 25% 27% 50% 31% 20% 24% 18% 35% 37% 21% 8% 60% 23% 45% 53% 58% - 40% 30% 25% Operation 16% 19% 20% 17% 10% 2% 44% 59% 4% 28% 20% 18% 7% 43% - 13% 23% 9% 30% 26% 0% 22% 27% 9% Other 1% 0% 4% 6% 9% 13% 1% 2% 18% 0% 0% - - - 15% - - 13% - - - 0% 0% 6% Vegetation/Animal 11% 24% 35% 3% 3% 13% 0% 0% 6% - - 10% 9% 5% - - - 26% 2% 2% 61% 2% 2% 21% Weather/Fire/Earthquake 10% 13% 6% 10% 8% 12% 0% 0% 10% 27% 8% 23% - - - - - - - - - 10% 3% 8% 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 Cypress - 1 of 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 ANNETTE(12KV) - Customers: 803 11.2 0.1-87.2 1.0 2.0 227.8 2.1 1.0 - - CircuitHistory - 24.1 0.1-13.7 0.0-11.2 0.1-49.0 0.2-3rd Party - - - - - 50% 43% 7% - - - 1- - - - - - - - - - - - - Equipment Failure 26% 10% - - - - - - - - - - 86% 50% - 100% 100% - 100% 100% - 93% 80% - Operation 74% 90% - - - - 57% 93% 0% - - - 14% 50% - - - - - - - 7% 20% - Vegetation/Animal - - - 100% 100% 50% - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - - - 100% - - - - - - - - - - - - - - - BERNICE(12KV) - Customers: 92 49.6 1.0-106.4 2.7 0.9 65.2 1.0 - - - - - - - - - - - - - - - - 3rd Party - - - 8% 37% - - - - - - - - - - - - - - - - - - - Equipment Failure 5% 1% - 92% 63% 100% - - - - - - - - - - - - - - - - - - Operation - - - - - - 100% 100% - - - - - - - - - - - - - - - - Vegetation/Animal 95% 99% - - - - - - - - - - - - - - - - - - - - - - BERTHA(12KV) - Customers: 2,202 100.0 1.1 1.0 170.0 3.1 2.0 213.1 2.0 - - - - - - - 2.5 0.0 - - - - 2.5 0.0-3rd Party - - - 5% 32% - - - - - - - - - - - - - - - - - - - Equipment Failure 30% 7% - 37% 33% 50% 63% 50% - - - - - - - 100% 100% - - - - 100% 100% - Operation 4% 3% 100% 5% 3% - 36% 50% - - - - - - - - - - - - - - - - Other - - - - - 50% - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake 66% 90% - 52% 32% - 1% 0% - - - - - - - - - - - - - - - - CLAIR(12KV) - Customers: 263 30.5 0.1 1.0 110.4 1.0 1.0 43.1 0.1 2.9 - - - - - - - - - - - - - - - 3rd Party - - - 100% 100% - - - - - - - - - - - - - - - - - - - Equipment Failure 13% 2% - - - 100% 40% 16% 51% - - - - - - - - - - - - - - - Operation 5% 38% - - - - - - - - - - - - - - - - - - - - - - Other 81% 60% - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - 60% 84% 49% - - - - - - - - - - - - - - - 15

Reliability Histories for Individual Circuits Serving Cypress - 2 of 6 CircuitHistory 2 2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017 SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI 2017 CLAUDIA(12KV) - Customers: 2,088 45.9 0.4 1.0 28.8 1.1-73.5 1.0 1.0 190.4 1.0 1.1 - - - - - - 10.2 0.1-200.6 1.1 1.1 3rd Party 60% 64% 100% 31% 92% - 11% 1% 100% - - - - - - - - - - - - - - - Equipment Failure - - - 67% 7% - - - - - - - - - - - - - - - - - - - Operation - - - 2% 1% - 89% 99% - 100% 100% 100% - - - - - - - - - 95% 93% 100% Vegetation/Animal - - - - - - - - - - - - - - - - - - 100% 100% - 5% 7% - Weather/Fire/Earthquake 40% 36% - - - - - - - - - - - - - - - - - - - - - - DAFFODIL(12KV) - Customers: 1,148 84.6 1.1-46.8 0.2 - - - - 12.0 1.0 1.0 0.0 0.0 - - - - 0.3 0.0 1.0 12.4 1.0 2.0 3rd Party - - - - - - - - - 100% 100% 100% - - - - - - - - - 97% 100% 50% Equipment Failure 100% 100% - 100% 100% - - - - - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - 100% 100% - - - - 100% 100% - 3% 0% - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - 100% - - 50% DIANA(12KV) - Customers: 1,541 110.8 2.4-68.1 2.0 0.5 143.9 1.6 1.0 210.8 0.5 0.4 53.9 0.1 1.7 - - - - - 0.9 264.8 0.6 3.1 3rd Party 57% 59% - 13% 50% - - - - - - - 100% 100% 100% - - - - - 100% 20% 21% 86% Equipment Failure - - - 74% 50% - - - - - - - - - - - - - - - - - - - Operation - - - 13% 0% 100% 92% 67% - - - - - - - - - - - - - - - - Other - - - - - - 8% 33% 100% - - - - - - - - - - - - - - - Vegetation/Animal 43% 41% - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - - - - - - - 100% 100% 100% - - - - - - - - - 80% 79% 14% ECUADOR(12KV) - Customers: 3,321 70.8 0.3 2.8 24.2 0.0-20.0 1.1-157.2 1.1 2.0 45.2 1.1 - - - - 1.9 0.0-204.4 2.2 2.0 3rd Party 66% 27% 65% - - - - - - 51% 92% - - - - - - - - - - 39% 47% - Equipment Failure 0% 0% - 96% 83% - 87% 98% - 49% 8% 100% 74% 8% - - - - - - - 54% 8% 100% Operation 33% 73% - 4% 17% - 13% 2% - - - - 26% 92% - - - - 100% 100% - 7% 45% - Vegetation/Animal - - 35% - - - - - - - - - - - - - - - - - - - - - 16

Reliability Histories for Individual Circuits Serving Cypress - 3 of 6 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 FELA(12KV) - Customers: 951 50.6 0.1-333.2 1.6-42.4 0.1 2.0 3.1 0.0 - - - - 140.8 0.3 0.0 - - - 143.8 0.4 0.0 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure 100% 100% - 28% 8% - 100% 100% - 19% 43% - - - - 95% 71% 100% - - - 93% 70% 100% Operation - - - 7% 8% - - - 50% - - - - - - 5% 29% - - - - 5% 28% - Other - - - 32% 37% - - - - 81% 57% - - - - - - - - - - 2% 2% - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - Weather/Fire/Earthquake - - - 33% 47% - - - 50% - - - - - - - - - - - - - - - FOXGLOVE(12KV) - Customers: 1,440 - - - 64.3 0.1-120.2 1.0 1.0 37.7 0.1 - - - - - - 1.0 145.3 1.1 1.0 183.0 1.3 2.0 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - 15% 42% - 100% 99% 100% 100% 100% - - - - - - - 100% 100% - 100% 100% - Operation - - - 85% 58% - 0% 1% - - - - - - - - - - - - 3% - - 1% Vegetation/Animal - - - - - - - - - - - - - - - - - 100% - - 97% - - 99% GRETA(12KV) - Customers: 225 46.6 1.0-9.0 1.0-64.8 1.0 - - - - - - - - - - - - - - - - 3rd Party - - - 100% 100% - - - - - - - - - - - - - - - - - - - Equipment Failure - - - - - - - - - - - - - - - - - - - - - - - - Operation - - - - - - 100% 100% - - - - - - - - - - - - - - - - Vegetation/Animal 100% 100% - - - - - - - - - - - - - - - - - - - - - - HALIBUT(12KV) - Customers: 796 - - 1.0 81.0 1.0-93.5 0.1 - - - - - - - - - - - - - - - - 3rd Party - - - - - - - - - - - - - - - - - - - - - - - - Equipment Failure - - - 100% 100% - 86% 84% - - - - - - - - - - - - - - - - Operation - - - - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - 100% - - - 14% 16% - - - - - - - - - - - - - - - - 17

Reliability Histories for Individual Circuits Serving Cypress - 4 of 6 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 HEREFORD(12KV) - Customers: 2,099 41.1 0.1 1.0 221.1 1.1 3.0 1.0 0.0 1.0 21.4 0.1 3.3 126.2 1.1 2.9 - - - - - - 147.6 1.2 6.2 3rd Party - - - - - - - - - - - - 81% 87% 67% - - - - - - 69% 83% 31% Equipment Failure 99% 86% - 18% 5% - 81% 67% - - - - - - - - - - - - - - - - Operation 1% 14% - 82% 95% - 19% 33% - 4% 20% - - - - - - - - - - 1% 1% - Other - - - - - - - - 100% - - - - - 33% - - - - - - - - 16% Vegetation/Animal - - - - - 67% - - - - - 33% 19% 13% - - - - - - - 16% 13% 18% Weather/Fire/Earthquake - - 100% 0% 0% 33% - - - 96% 80% 67% - - - - - - - - - 14% 3% 35% JACQUE(12KV) - Customers: 2,378 7.2 0.0 2.0 42.1 1.1-94.3 1.3 1.9 0.9 0.0-12.1 0.0-3.4 0.0 - - - - 16.4 0.1-3rd Party - - - 21% 88% - 11% 14% 100% - - - - - - - - - - - - - - - Equipment Failure 76% 43% - 55% 7% - 12% 5% - 100% 100% - 94% 50% - 100% 100% - - - - 96% 59% - Operation 24% 57% 100% 2% 1% - 77% 81% - - - - 6% 50% - - - - - - - 4% 41% - Vegetation/Animal - - - 21% 5% - - - - - - - - - - - - - - - - - - - KAREN(12KV) - Customers: 2,349 53.4 0.1 1.0 32.3 1.1-122.6 2.3 - - - - - - - 41.9 0.6 0.4 0.6 0.0-42.5 0.6 0.4 3rd Party 2% 12% 100% 43% 95% - 8% 44% - - - - - - - 100% 100% 100% - - - 98% 99% 100% Equipment Failure 11% 36% - 51% 3% - 24% 4% - - - - - - - - - - - - - - - - Operation 87% 52% - 3% 1% - 68% 52% - - - - - - - 0% 0% - 100% 100% - 2% 1% - Vegetation/Animal - - - 4% 1% - - - - - - - - - - - - - - - - - - - KATELLA(12KV) - Customers: 1,211 1.4 0.0 1.0 218.3 0.4 1.4 112.4 1.9 0.0 - - - 78.5 1.1 1.0 1.1 0.0 - - - - 79.5 1.1 1.0 3rd Party - - - 95% 94% 100% - - - - - - - - - - - - - - - - - - Equipment Failure - - - 5% 6% - 93% 53% 100% - - - 97% 98% 100% 100% 100% - - - - 97% 98% 100% Operation 100% 100% - - - - 7% 47% - - - - 3% 2% - - - - - - - 3% 2% - Other - - 100% - - - - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - - 18

Reliability Histories for Individual Circuits Serving Cypress - 5 of 6 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 KRISTEN(12KV) - Customers: 1,001 44.7 1.0 0.0 492.9 1.5 1.0 41.2 0.6 - - - - - - - 2.2 0.0 - - - - 2.2 0.0-3rd Party - - - 2% 68% 100% - - - - - - - - - - - - - - - - - - Equipment Failure - - - 98% 32% - 12% 2% - - - - - - - - - - - - - - - - Operation 2% 2% - - - - 88% 98% - - - - - - - 100% 100% - - - - 100% 100% - Vegetation/Animal 98% 98% 100% - - - - - - - - - - - - - - - - - - - - - MILDRED(12KV) - Customers: 1,437 3.8 0.0-102.6 1.1 0.9 75.6 1.1 1.0 29.7 1.0 1.0 - - - 16.6 0.0 1.0 - - - 46.3 1.0 2.0 3rd Party - - - 8% 76% 100% - - - 100% 100% 100% - - - - - - - - - 64% 98% 50% Equipment Failure - - - 85% 10% - - - - - - - - - - 100% 100% - - - - 36% 2% - Operation 100% 100% - 2% 4% - 100% 100% - - - - - - - - - 100% - - - - - 50% Vegetation/Animal - - - 6% 10% - - - 100% - - - - - - - - - - - - - - - RAVENNA(12KV) - Customers: 2,094 4.3 0.1 1.5 - - 1.0 87.3 0.7 - - - - - - 1.0 - - - 18.5 0.1-18.5 0.1 1.0 3rd Party 100% 100% - - - - - - - - - - - - 100% - - - - - - - - 100% Equipment Failure - - - - - 100% 90% 22% - - - - - - - - - - - - - - - - Operation - - - - - - 10% 78% - - - - - - - - - - 100% 100% - 100% 100% - Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - - - - - RZYSKI(12KV) - Customers: 2,613 132.5 1.2 1.0 16.4 0.0 1.0 5.0 0.2 - - - - - - - 30.5 0.9-97.1 0.6-127.7 1.5-3rd Party 8% 4% - 100% 100% 100% - - - - - - - - - 87% 94% - - - - 21% 55% - Equipment Failure 74% 13% - - - - - - - - - - - - - - - - - - - - - - Operation 18% 83% - - - - 100% 100% - - - - - - - 13% 6% - 100% 100% - 79% 45% - Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - - - - - 19

Reliability Histories for Individual Circuits Serving Cypress - 6 of 6 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 STELLA(12KV) - Customers: 2,697 59.2 1.1-203.7 3.1 2.0 285.8 2.1 1.0 21.2 0.5 - - - - 0.4 0.0-109.5 1.1-131.1 1.7-3rd Party 23% 8% - 4% 32% 50% - - 100% - - - - - - - - - - - - - - - Equipment Failure - - - 74% 32% 50% 77% 51% - 100% 100% - - - - 100% 100% - 99% 99% - 100% 99% - Operation 3% 1% - 9% 3% - 23% 49% - - - - - - - - - - 1% 1% - 0% 1% - Other - - - 13% 32% - - - - - - - - - - - - - - - - - - - Vegetation/Animal 74% 91% - - - - - - - - - - - - - - - - - - - - - - THORPE(12KV) - Customers: 867 2.6 0.0 1.0 6.3 0.8 - - - - - - 1.0 - - 2.0 46.7 1.1-46.9 0.1-93.7 1.1 3.0 3rd Party - - - - - - - - - - - 100% - - 100% - - - - - - - - 100% Equipment Failure - - - - - - - - - - - - - - - 48% 9% - 100% 100% - 74% 14% - Operation 100% 100% - 100% 100% - - - - - - - - - - 52% 91% - - - - 26% 86% - Vegetation/Animal - - 100% - - - - - - - - - - - - - - - - - - - - - TRINIDAD(12KV) - Customers: 2,009 13.6 0.2 1.9 75.2 0.1 - - - - 0.9 0.0 2.0 1.7 0.0-45.9 0.1 1.0 71.5 0.6 0.5 119.9 0.8 3.4 3rd Party 2% 26% - - - - - - - - - - - - - - - - 98% 91% 100% 58% 70% 13% Equipment Failure 97% 69% 49% 100% 100% - - - - 100% 100% 50% - - - 60% 26% - - - - 24% 5% 29% Operation 1% 5% - - - - - - - - - 50% - - - 40% 74% - 2% 9% - 16% 21% 29% Other - - - - - - - - - - - - - - - - - 100% - - - - - 29% Vegetation/Animal - - 51% - - - - - - - - - 100% 100% - - - - - - - 1% 4% - VERBENA(12KV) - Customers: 2,551 72.1 1.1-30.6 0.1 3.9 14.7 0.9 1.0 3.6 0.0 - - - - 44.6 0.4 3.7 18.4 0.1 3.0 66.6 0.5 6.7 3rd Party 83% 94% - - - 25% - - - - - - - - - - - - 54% 16% 33% 15% 4% 15% Equipment Failure 17% 6% - 87% 83% 24% - - 100% - - - - - - 98% 85% 73% - - - 66% 59% 41% Operation - - - 13% 17% - 100% 100% - 100% 100% - - - - 2% 15% - 46% 84% - 20% 37% - Other - - - - - 25% - - - - - - - - - - - - - - - - - - Vegetation/Animal - - - - - - - - - - - - - - - - - 27% - - 67% - - 45% Weather/Fire/Earthquake - - - - - 26% - - - - - - - - - - - - - - - - - - 20