Circuit Reliability Review South El Monte 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 MONTEBELLO District CityList1 ALHAMBRA EAST LOS ANGELES EL MONTE LOS ANGELES MONTEBELLO MONTEREY PARK NORTH EL MONTE PICO RIVERA ROSEMEAD SOUTH EL MONTE SOUTH SAN GABRIEL 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 South El Monte CircuitList1 There are 15 circuits that serve South El Monte 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers ALPACA(4.16KV) 724 - - - AUTOBODY(4.16KV) 473 - - - BROOKLINE(16KV) 1,538 - - - BRYCE(16KV) 2,777 - - - CHANGE(16KV) 1,756 - - - DAROCA(16KV) 1,388 - - - ENLOE(16KV) 1,830 - - - EXLINE(16KV) 2,773 - - - FORBID(16KV) 1,952 - - - ROSEGLEN(16KV) 698 - - - SEAMAN(4.16KV) 928 - - - SLACK(4.16KV) 583 - - - TAMORA(16KV) 561 - - - TROY(4.16KV) 688 - - - WEAVER(4.16KV) 820 - - - Grand Total 19,489 7
Reliability History of Circuits Serving South El Monte (No Exclusions) BarChart 2014 2015 2016 2017 SAIDI (average minutes of sustained interruptions) 250.0 200.0 150.0 100.0 50.0 131.6 215.4 112.1 114.8 134.1 175.4 134.5 139.7 South El Monte 0.0 2.5 2.0 1.8 1.9 SCE SYSTEMWIDE SAIFI (average frequency of sustained interruptions) 1.5 1.0 0.5 1.2 1.0 0.9 1.2 1.1 1.2 0.0 ** Exclusions are days which utilities are allowed to MAIFI (average frequency of momentary interruptions) 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 2.3 3.3 1.4 1.4 3.1 1.6 3.0 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 South El Monte 2017 SAIDIChart Contributions to SAIDI by Outage Cause Vegetation /Animal 4.1% 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 0.1% Weather /Fire /Earthquake 17.8% Operation 6.3% Equipment Failure 34.7% 3rd Party 37.0% 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 South El Monte 2017 SAIFIChart Vegetation /Animal 5.0% Contributions to SAIFI by Outage Cause Other 0.1% Weather /Fire /Earthquake 7.6% 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 6.6% Equipment Failure 43.3% 3rd Party 37.4% 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 South El Monte Updated through Dec 2017
Average Reliability of 15 Circuits Serving South El Monte 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 15 Circuits Serving South El Monte -- Total Customers: 19,489 131.6 1.2 2.3 215.4 1.8 3.3 134.1 1.2 3.1 61.3 0.7 0.3 30.1 0.3 0.9 42.2 0.5 0.9 41.8 0.3 0.8 175.4 1.9 3.0 3rd Party 7% 7% 24% 21% 15% 19% 28% 26% 18% 13% 12% 47% 53% 47% 19% 33% 50% 12% 65% 61% 40% 37% 37% 25% Equipment Failure 49% 46% 23% 35% 55% 20% 45% 49% 36% 29% 54% - 28% 26% 3% 55% 43% 70% 28% 37% 24% 35% 43% 29% Operation 25% 20% 6% 29% 15% 2% 7% 5% 2% 8% 13% 10% 2% 2% 21% 7% 3% - 6% 2% 17% 6% 7% 12% Other 6% 9% 31% 6% 8% 33% 2% 0% 34% 0% 0% 43% 0% 0% 55% - 10% 0% 0% 24% Vegetation/Animal 5% 12% 13% 0% 0% 15% 2% 2% 8% - - - 17% 24% 2% 5% 4% 18% - - 10% 4% 5% 9% Weather/Fire/Earthquake 8% 7% 3% 8% 7% 11% 16% 17% 2% 51% 20% - 0% 0% - - - 18% 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 South El Monte - 1 of 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 ALPACA(4.16KV) - Customers: 724 - - 2.0 203.3 1.1 1.0 54.8 2.0 6.0 48.5 1.0 CircuitHistory - - - 2.0 58.3 1.0 1.0 - - - 106.8 2.0 3.0 3rd Party - - - 95% 92% - 100% 100% - - - 1 100% 100% 100% - - - 55% 50% 33% Equipment Failure 17% 100% 100% - - 45% 50% - Operation - - - 5% 8% - - - Other - - 100% - - 100% - - 83% - 100% 67% Vegetation/Animal Weather/Fire/Earthquake AUTOBODY(4.16KV) - Customers: 473 87.8 1.2-52.4 1.2 2.0 142.1 2.1-1.0-1.0 3rd Party - - 40% 47% Equipment Failure - - 58% 48% - 100% - 100% Operation 100% 100% - 4% 13% - 1% 5% Other - 50% - - Vegetation/Animal Weather/Fire/Earthquake - - - 96% 87% 50% - - BROOKLINE(16KV) - Customers: 1,538 224.5 2.6 5.9 663.5 5.8 7.5 30.1 0.1 1.9 42.5 1.0-98.2 1.0 1.0 56.4 1.5 1.2 55.9 1.0 2.7 253.0 4.6 4.8 3rd Party 4% 1% 17% 43% 17% - 2% 0% Equipment Failure 47% 60% 17% 31% 57% 47% 59% 11% 47% 99% 100% - 98% 99% - 100% 100% 100% 100% 100% 26% 99% 100% 38% Operation 1% 0% - 0% 0% - 17% 83% - - - 0% 0% - 0% 0% - 0% 0% - Other - - 16% 15% 17% 39% 18% 3% - 1% 0% - 1% 1% 100% - 37% 1% 0% 41% Vegetation/Animal - - 34% 0% 0% - 2% 0% 53% - - - 37% - - 21% Weather/Fire/Earthquake 48% 39% 17% 10% 9% 13% 2% 2% 1% 0% - - - 0% 0% - BRYCE(16KV) - Customers: 2,777 337.2 2.7 1.3 807.5 6.9 3.5 351.6 3.3 5.0 97.2 1.0 1.0 0.3 0.0-28.8 0.1 1.2 33.1 0.2 2.0 159.4 1.3 4.2 3rd Party - - 77% 9% 15% 6% 35% 25% 40% 3% 1% 100% - - 99% 99% - 22% 18% 24% Equipment Failure 68% 37% - 42% 71% 61% 31% 36% 40% - - 62% 14% 100% 1% 1% 50% 11% 1% 53% Operation 1% 1% - 48% 15% - 3% 3% - 1% 1% - 100% 100% - 38% 86% - - - 50% 8% 8% 24% Other 16% 26% 23% - - 5% - - 20% - - - Vegetation/Animal 15% 36% - - - 28% - - Weather/Fire/Earthquake - - 31% 35% - 96% 98% - - 59% 74% - 15
Reliability Histories for Individual Circuits Serving South El Monte - 2 of 4 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 CHANGE(16KV) - Customers: 1,756 1.0 0.0-104.7 1.6 2.6 2.7 0.0 4.9 152.4 2.0 - - - 1.0 24.9 0.2 0.8 - - - 177.3 2.2 1.8 3rd Party - 55% 49% - - 47% 44% - Equipment Failure - - - 6% 0% - - - 20% 45% 51% - - 39% 45% - Operation 100% 100% - 36% 60% - 36% 46% - 0% 0% - - 0% 0% - Other - - - 55% 38% 62% - - 40% - 100% 57% Vegetation/Animal - - - 2% 1% 38% 64% 54% 41% - - 100% 100% 100% - - - 14% 10% 43% Weather/Fire/Earthquake DAROCA(16KV) - Customers: 1,388 135.1 1.1-141.4 1.0 2.9 178.8 2.1 3.4 0.1-26.1 0.0 2.0 35.6 0.1-65.2 0.2 2.0 3rd Party - - 31% 47% - 50% - 50% Equipment Failure - - 57% 47% - - - 100% 100% 50% - - - 40% 16% 50% Operation 75% 95% 0% 0% 100% 100% 100% 100% - 60% 84% - Other - 34% - - Vegetation/Animal - 35% - - Weather/Fire/Earthquake 25% 5% - 100% 100% 31% 12% 5% ENLOE(16KV) - Customers: 1,830 59.9 0.1 1.0 7.9 0.1 1.0 163.6 1.9 1.0 2.4 0.0-108.9 1.8 0.2 147.1 2.1 2.0 - - - 258.4 3.9 2.2 3rd Party 48% 55% - 56% 96% 52% 77% - Equipment Failure 0% 2% 100% 64% 68% - 86% 96% 100% - - 44% 4% 50% - - - 25% 2% 46% Operation 100% 98% 14% 4% - 100% 100% - 3% 0% - - - 2% 0% - Other Vegetation/Animal - - - 36% 32% 100% - - 49% 45% 100% - - 50% - - - 21% 21% 54% Weather/Fire/Earthquake EXLINE(16KV) - Customers: 2,773 36.3 0.8 3.4 - - 4.6 15.9 0.0 3.6 - - - 0.3 0.0 1.0 - - 1.0 155.9 1.2 2.0 156.2 1.2 3.9 3rd Party - 43% - - 26% - 100% - - - 100% 100% 100% 100% 100% 75% Equipment Failure 80% 77% 41% - - - 41% 45% 29% 100% - 25% Operation 20% 23% 30% - - - 59% 55% 16% - - - 67% 50% - - - 0% 0% - Other - - 29% - - 22% - - 29% - - - 33% 50% - - - 0% 0% - Vegetation/Animal Weather/Fire/Earthquake - 35% - - 16
Reliability Histories for Individual Circuits Serving South El Monte - 3 of 4 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 FORBID(16KV) - Customers: 1,952 155.9 1.5 3.3 49.3 0.0 3.6 147.7 1.3 2.3 5.3 0.0 1.0 8.0 0.0 3.0 73.6 1.0 87.0 1.0 4.0 3rd Party 42% 24% 67% 92% 69% 27% 0% 0% 33% - - - Equipment Failure 58% 75% - 4% 18% 28% 83% 98% 67% 100% 100% - 100% 100% - 100% 100% 100% 100% - Operation 0% 0% 66% 0% 0% 0% 0% 50% Other - 28% 16% 2% - - - 100% - - 34% 50% Vegetation/Animal - - 33% 4% 13% 17% - - Weather/Fire/Earthquake ROSEGLEN(16KV) - Customers: 698 82.2 0.1-267.0 1.6 3.0 0.7 0.0 1.0 - - 0.8-1.0-1.8 3rd Party - - - 21% 21% 67% - - Equipment Failure - - - 78% 79% - 100% 100% 100% 100% - 56% Operation 100% 100% - 1% 0% - - 100% - - - 44% Other Vegetation/Animal - 33% - - Weather/Fire/Earthquake SEAMAN(4.16KV) - Customers: 928 219.6 1.0 2.0 5.8 0.0 4.0 17.7 0.1 4.2 420.4 2.0 - - - 1.0 110.0 1.1-154.8 1.0-685.1 4.2 1.0 3rd Party - 25% - 73% 88% 12% 24% - Equipment Failure - - - 100% 100% - - - 25% 7% 49% - - - 100% 100% - 27% 48% - Operation 100% 100% - - - 25% 100% 100% - 3% 38% 27% 12% 6% 22% - Other - - 100% - - 50% - - 75% - 100% 100% Vegetation/Animal Weather/Fire/Earthquake - 90% 13% - - 55% 6% - SLACK(4.16KV) - Customers: 583 238.6 2.3 10.0 30.3 0.0 2.0 21.8 0.0 3.0 30.9 1.0 1.0 - - 1.0 34.1 0.0-5.2 0.0-70.2 1.1 2.0 3rd Party 6% 44% 10% - Equipment Failure 94% 56% 60% 100% 100% - 82% 54% 33% 100% 100% 100% 100% 93% 95% - Operation - - 18% 46% - - 100% 100% - 7% 5% - Other - - 30% - - 100% - - 67% - - 100% - - 100% 100% Vegetation/Animal Weather/Fire/Earthquake 17
Reliability Histories for Individual Circuits Serving South El Monte - 4 of 4 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 TAMORA(16KV) - Customers: 561 28.5 1.0 1.0 63.1 0.5 2.0 488.6 2.0 1.0 50.2 1.5 - - - 1.5 - - 50.2 1.5 1.5 3rd Party - - 84% 50% Equipment Failure 61% 2% - 20% 3% - 0% 0% 100% 68% 66% - - - 68% - - 68% 66% 68% Operation 39% 98% 0% 0% - 32% 34% - - 32% 34% - Other - - 100% 80% 97% 100% 32% 32% Vegetation/Animal - - 15% 50% Weather/Fire/Earthquake TROY(4.16KV) - Customers: 688 - - 2.0 41.4 1.0 2.0 337.3 1.7 8.5 30.6 1.0 - - - 2.0 - - 30.6 1.0 2.0 3rd Party - 50% - - 23% - 50% 50% Equipment Failure - - - 5% 1% - 61% 41% 18% 100% 100% - - 100% 100% - Operation - - - 95% 99% - 1% 0% Other - - 100% - - 50% - - 35% - 50% 50% Vegetation/Animal Weather/Fire/Earthquake - - 38% 59% 23% - - - WEAVER(4.16KV) - Customers: 820 - - 2.0 7.7 0.0 4.0 64.3 0.3 3.0 108.3 2.0-263.8 1.3 1.0-1.0 372.1 3.3 2.0 3rd Party - 50% - - 100% 100% - - 100% 71% 38% 50% Equipment Failure - - - 97% 32% - - - 33% 29% 49% - - 8% 30% - Operation - - - 3% 68% - 100% 100% - 71% 51% - - 21% 31% - Other - - 100% - - 50% - - 67% - 100% 50% Vegetation/Animal Weather/Fire/Earthquake - - - - - - - 18