Circuit Reliability Review

Transcription

1 Circuit Reliability Review South Bay Cities January 2018

2 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 ( ). 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

3 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

4 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

5 Cities in the SOUTH BAY District CityList1 ALONDRA PARK DEL AIRE EL SEGUNDO GARDENA HAWTHORNE HERMOSA BEACH INGLEWOOD LADERA HEIGHTS LAWNDALE LENNOX LOMITA LOS ANGELES MANHATTAN BEACH PALOS VERDES ESTATES RANCHO PALOS VERDES REDONDO BEACH ROLLING HILLS ROLLING HILLS ESTATES TORRANCE VIEW PARK-WINDSOR HILLS WEST ATHENS WESTMONT 5

6 * 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

7 Overview of South Bay Cities CircuitList1 There are 295 circuits that serve South Bay Cities 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers ABRI(12KV) 1,083 BLACKWATER(4.16KV) 111 CHEMICAL(16KV) 15 EASY(4.16KV) 1,517 ADAK(16KV) 743 BLAKE(16KV) 3,342 CHICO(16KV) 2,989 EBONY(16KV) 4,179 ADDIS(16KV) 3,131 BLIMP(16KV) 3,723 CHRIS(12KV) 1,398 EDGAR(12KV) 322 ALASKA(16KV) 1,877 BLOCKER(16KV) 4,538 CIMARRON(16KV 3,710 EL PASEO(4.16KV 924 ALBACORE(16KV) 1,764 BLOODSTONE(4.16KV) 814 CLEO(4.16KV) 1,073 ELLENWOOD(16K 943 AMBERSKY(16KV) 1,841 BLOSSOM(16KV) 1,702 CLIFTON(4.16KV) 982 ELROY(16KV) 641 AMESTOY(4.16KV) 1,028 BLUEGILL(16KV) 3,208 CLIPPER(4.16KV) 161 ENGLAND(4.16KV 386 ANCHOR(4.16KV) 594 BOEING(16KV) 2,077 CODONA(4.16KV 338 EVANS(16KV) 1,346 ANCHORAGE(16KV) 1 BOLTON(16KV) 2,674 COMO(4.16KV) 1,027 EZRA(4.16KV) 1,032 ANGELINA(16KV) 1,392 BOND(12KV) 6 COMPUTER(16KV 91 FACTOR(16KV) 387 ANZA(4.16KV) 774 BORDEN(4.16KV) 1,002 CONTINENT(16KV 25 FAIRBANKS(4.16K 797 ARBORVITAE(4.16KV) 1,465 BRAMBLE(16KV) 57 COPRA(4.16KV) 667 FAIRHAVEN(16KV 2,957 ARCTURUS(4.16KV) 600 BRINE(12KV) 911 CORAL(4.16KV) 289 FELDSPAR(16KV) 1,356 ARIZONA(4.16KV) 1,144 BRYANT(16KV) 159 COUNTY(12KV) 7 FIAT(4.16KV) 688 ARTISANO(16KV) 531 BUDLONG(4.16KV) 2,028 COVEVIEW(16KV 1,853 FILLY(16KV) 1,222 ARVANA(16KV) 3,367 BUNGALOW(16KV) 25 CRANBROOK( FIRETHORN(16KV 2,587 ASPEN(16KV) 1,612 BURLEIGH(4.16KV) 693 CRENSHAW(4.16 1,106 FIRMONA(16KV) 1,897 AZALIA(4.16KV) 771 BURMA(16KV) 567 CRESTWIND( FLYWHEEL(16KV) 1,568 AZURE(4.16KV) 965 BUTANE(16KV) 4,186 CYLINDER(16KV) 1,395 FREEMAN(4.16KV 1,200 BACH(12KV) 1,639 CABRILLO(4.16KV) 498 DAHLIA(4.16KV) 967 FRY(12KV) 54 BACHELOR(16KV) 1,327 CALM(12KV) 930 DALESIDE(16KV) 3,756 GAFFEY 1(2.4KV) 373 BALLAST(16KV) 2,407 CAMINO REAL(4.16KV) 771 DARBY(4.16KV) 939 GASBAG(16KV) 72 BALLONA(16KV) 172 CARNELIAN(16KV) 4,909 DEBORAH(16KV) 2,583 GEARLINE(16KV) 390 BANCROFT(16KV) 117 CARTER(4.16KV) 998 DELID(4.16KV) 1,167 GEM(4.16KV) 671 BARGE(4.16KV) 1,204 CASWELL(16KV) 291 DENKER(4.16KV) 2,142 GENERAL PETRO 308 BARRACUDA(16KV) 244 CATALINA(4.16KV) 931 DENVER(12KV) 309 GIRDER(4.16KV) 1,254 BAUXITE(16KV) 2,346 CATALYTIC(12KV) 125 DOGWOOD(16KV 3,919 GLASGOW(4.16KV 775 BENHILL(16KV) 1,079 CENTINELA(16KV) 319 DOMINGUEZ(16K 1,510 GRANDVIEW( BERYL(4.16KV) 830 CENTURY(4.16KV) 680 DONNA(16KV) 532 GRAVEYARD(16K 1,391 BLACKJACK(16KV) 246 CHADRON(16KV) 971 DRIFT(12KV) 1,380 GRAYSON(4.16KV 1,077 Grand Total 350,638 7

8 Overview of South Bay Cities CircuitList2 There are 295 circuits that serve South Bay Cities 2 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers GRIZZLEY(4.16KV) 3,498 KERNAN(16KV) 646 MIRALESTA(16KV 75 PUEBLO(16KV) 1,012 GULF(16KV) 935 KEYSTONE(4.16KV) 1,456 MOON(4.16KV) 1,401 PULLMAN(4.16KV 1,506 HALLDALE(16KV) 2,743 KING(16KV) 3,802 MORGAN(4.16KV 959 QUEEN(4.16KV) 108 HALLET(12KV) 1,351 KORNBLUM(4.16KV) 989 NARBONNE(4.16 1,106 QUICKSILVER(16K 1,759 HANCOCK(4.16KV) 154 LADERA(4.16KV) 779 NELSON(16KV) 3,442 RADIATOR(16KV) 183 HARBOR(4.16KV) 1,231 LIBERATOR(16KV) 91 NEVADA(4.16KV) 1,087 RAHN(16KV) 133 HARDY(4.16KV) 804 LIDUMS(4.16KV) 1,275 NISLEY(16KV) 3,139 REDGUM(16KV) 14 HARKNESS(16KV) 846 LILAC(4.16KV) 502 NO BEACH(4.16K 800 REGAL(12KV) 707 HAWTHORNE(4.16KV) 2,483 LLEWELLYN(4.16KV) 1,000 NORMANDIE(4.16 2,291 REPUBLIC(16KV) 3,815 HAYDEN(4.16KV) 78 LOCK(4.16KV) 1,629 OCCIDENTAL(16K 688 RHUMBA(16KV) 4,012 HAYWARD(16KV) 943 LOMITA(16KV) 159 OCTANE(16KV) 3,643 RIDGELAND( HELIUM(4.16KV) 148 LOQUAT(16KV) 2,922 OPAL(4.16KV) 744 RIVET(4.16KV) 704 HERMOSA(4.16KV) 1,189 MADERA(4.16KV) 940 ORCHID(4.16KV) 898 ROCHA(4.16KV) 1,388 HICKORY(4.16KV) 513 MAJOR(4.16KV) 824 OXFORD(4.16KV) 976 ROSEMARY(4.16K 1,160 HILL(16KV) 771 MALAGA COVE(4.16KV) 453 OZONE(4.16KV) 603 RUTHELLEN(16KV 1,819 HILLSIDE(4.16KV) 436 MANCHESTER(4.16KV) 904 PACOMA(4.16KV 1,133 RYAN(16KV) 3,936 HINDRY(4.16KV) 470 MANUEL(4.16KV) 911 PALM(4.16KV) 1,566 SAGO(16KV) 3,700 HYDE PARK(4.16KV) 1,198 MANVILLE(12KV) 111 PAN AMERICAN( 20 SALMON(16KV) 3,834 ILLINOIS(16KV) 1,056 MARCELLINA(4.16KV) 353 PANSY(4.16KV) 912 SANDRA(16KV) 4,342 INTERSTATE(4.16KV) 514 MARGARET(16KV) 5,064 PEACOCK(4.16KV 136 SCIURBA(16KV) 2,919 JANICE(4.16KV) 1,115 MARTIN(4.16KV) 1,388 PENGUIN(16KV) 455 SEABASS(16KV) 34 JAVA(16KV) 438 MCCLOUD(16KV) 423 PENTHOUSE(16K 1,255 SELVA(16KV) 1,965 JENKINS(4.16KV) 1,374 MCDONNELL(16KV) 2,041 PETROL(16KV) 248 SHELL(12KV) 44 JOHANNA(4.16KV) 916 MENLO(4.16KV) 722 PIMA(4.16KV) 369 SHELLDOM(12KV 66 JUDAH(4.16KV) 881 MERCANTILE(4.16KV) 101 PINZON(16KV) 1,152 SHERBOURNE(16 1,809 JUNEAU(4.16KV) 628 MICA(16KV) 770 PISTON(16KV) 4,368 SHORELINE(16KV 1,034 JUPITER(16KV) 727 MIGUEL(12KV) 184 PLUTO(4.16KV) 617 SHOUP(4.16KV) 935 KATHLEEN(4.16KV) 676 MILLER(4.16KV) 901 PLYMOUTH(4.16K 1,176 SHOWCASE(16KV 789 KEATS(16KV) 160 MILLPOINT(12KV) 187 PORTUGUESE BE 54 SILICONE(16KV) 2,244 KELVINATOR(16KV) 1,165 MINNOW(16KV) 72 PRUITT(4.16KV) 330 SITKA(16KV) 17 Grand Total 350,638 8

9 Overview of South Bay Cities CircuitList3 There are 295 circuits that serve South Bay Cities 3 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers SO STRAND(4.16KV) 616 TYBURN(4.16KV) SPARTON(16KV) 1,174 VALMONTE(4.16KV) SPINEL(4.16KV) 337 VALVE(16KV) 3, SPINNING(4.16KV) 1,131 VAN WICK(4.16KV) 1, SQUALL(12KV) 1,684 VANDERLIP(2.4KV) STACY(4.16KV) 794 VENUS(4.16KV) STARBOARD(12KV) 1,269 VILLA(4.16KV) 1, STATLER(16KV) 1,667 VIOLET(4.16KV) STOCCO(12KV) 111 VULTEE(16KV) 2, STOCKER(16KV) 2,193 WAGNER(4.16KV) 1, STORM(12KV) 3,225 WEISER(12KV) STRAWBERRY(4.16KV) 512 WESTERN(16KV) STRINGER(4.16KV) 1,228 WHALE(16KV) SUMMERHILL(16KV) 3,252 WHITING(16KV) SUMP(4.16KV) 273 WILLOW(12KV) SUNDALE(4.16KV) 993 WILMINGTON(12KV) 1, SUPERIOR(12KV) 1,939 WINLOCK(16KV) 1, SURREY(4.16KV) 107 WISE(4.16KV) 1, SUTRO(4.16KV) 621 YORK(4.16KV) TALENT(4.16KV) 543 ZAMORA(16KV) TANDEM(16KV) 1,508 ZEBRA(16KV) 2, TAPER(4.16KV) 1,137 ZEPHER(16KV) TEAK(16KV) 242 ZEPPELIN(16KV) TENOR(4.16KV) 1,001 ZINC(16KV) 2, TERRAZZO(4.16KV) 854 ZIRCON(16KV) TORSON(16KV) TOURMALINE(4.16KV) TRANSPLANT(4.16KV) 1, TRUSS(4.16KV) 1, TWINING(16KV) Grand Total 350,638 9

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11 Causes of Repair Outages in South Bay Cities 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 1.7% Weather /Fire /Earthquake 7.4% Operation 9.1% Other 10.4% 3rd Party 21.3% Equipment Failure 50.1% 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. 11

12 Causes of Repair Outages in South Bay Cities 2017 SAIFIChart 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 Vegetation /Animal 3.5% Other 12.6% Operation 14.3% Weather /Fire /Earthquake 9.7% 3rd Party 18.3% Equipment Failure 41.5% 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 12

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15 Back-up Slides Reliability Histories of Circuits Serving South Bay Cities Updated through Dec 2017

16 Average Reliability of 295 Circuits Serving South Bay Cities CitySummary st Qtr nd Qtr rd Qtr th Qtr SAIDI SAIDI SAIDI SAIDI 295 Circuits Serving South Bay Cities -- Total Customers: 350, rd Party 16% 15% 17% 15% 16% 27% 21% 15% 28% 11% 10% 19% 29% 24% 41% 31% 27% 32% 19% 17% 21% 21% 18% 27% Equipment Failure 44% 37% 17% 46% 46% 18% 40% 38% 21% 50% 38% 25% 47% 37% 14% 55% 52% 27% 51% 43% 22% 50% 42% 22% Operation 7% 6% 7% 10% 12% 4% 12% 25% 6% 10% 22% 9% 8% 9% 2% 8% 11% 2% 11% 13% 8% 9% 14% 6% Other 10% 20% 32% 13% 11% 20% 12% 8% 17% 16% 13% 26% 14% 24% 29% 5% 8% 30% 3% 5% 12% 10% 13% 24% Vegetation/Animal 4% 6% 15% 7% 6% 22% 4% 7% 18% 0% 0% 5% 1% 4% 12% 1% 3% 8% 5% 9% 34% 2% 3% 15% Weather/Fire/Earthquake 18% 16% 11% 10% 9% 8% 12% 7% 9% 14% 18% 16% 1% 3% 2% - - 1% 12% 13% 3% 7% 10% 6% SCE SYSTEMWIDE 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. 16

17 Reliability Histories for Individual Circuits Serving South Bay Cities - 1 of 74 SAIDI SAIDI SAIDI SAIDI ABRI(12KV) - Customers: 1, CircuitHistory rd Party % 34% 48% 100% Equipment Failure % 71% - 63% 50% % 100% 38% 100% 100% 38% Operation 100% 100% - 12% 29% - 3% 2% Other % Vegetation/Animal % % ADAK(16KV) - Customers: Equipment Failure 65% 60% 33% 29% 78% - 41% 47% 27% Operation % 26% Other % % 26% 19% Vegetation/Animal 35% 40% - 71% 22% 100% % ADDIS(16KV) - Customers: 3, rd Party % Equipment Failure % 99% - 2% 0% % 100% 100% 100% 100% % 100% 100% Operation 100% 100% - 0% 1% - 24% 50% Other % 74% 50% ALASKA(16KV) - Customers: 1, rd Party 1% 2% % 25% 25% Equipment Failure % 19% - 34% 50% 75% Operation 0% 1% 0% 16% 18% - 23% 26% % 100% - 100% 100% % 100% - Other % 56% 63% Vegetation/Animal % 1% Weather/Fire/Earthquake 99% 97% 20% %

18 Reliability Histories for Individual Circuits Serving South Bay Cities - 2 of 74 CircuitHistory 2 SAIDI SAIDI SAIDI SAIDI ALBACORE(16KV) - Customers: 1, rd Party % Equipment Failure 38% 16% 18% 54% 39% - 88% 62% 30% Operation 3% 1% - 44% 58% 18% 1% 0% Other 51% 61% - 0% 0% % 100% % 100% - Vegetation/Animal 8% 21% 82% 2% 2% - 12% 38% 70% % % AMBERSKY(16KV) - Customers: 1, Equipment Failure 8% 3% - 99% 98% 100% 98% 97% 100% % 100% - 4% 1% - Operation 22% 4% - 1% 2% - 2% 3% - 3% 21% % 33% % 25% - Other 33% 37% 100% % 79% % % 48% 100% Vegetation/Animal % 67% % 25% - Weather/Fire/Earthquake 37% 57% AMESTOY(4.16KV) - Customers: 1, rd Party % 1% - 23% 33% 100% Equipment Failure % Operation 100% 100% - 38% 28% 50% 1% 1% - 100% 100% - 100% 100% % 100% - Other % % 33% % % Vegetation/Animal % % Weather/Fire/Earthquake % 70% - 57% 33% ANCHOR(4.16KV) - Customers: rd Party % % Equipment Failure 100% 100% 100% % 100% % 100% - Operation % Other %

19 Reliability Histories for Individual Circuits Serving South Bay Cities - 3 of 74 CircuitHistory 3 SAIDI SAIDI SAIDI SAIDI ANCHORAGE(16KV) - Customers: Equipment Failure Operation ANGELINA(16KV) - Customers: 1, rd Party % 99% 51% Equipment Failure % 1% - 17% 2% Operation % 98% 100% 100% 100% % 100% - Other 100% 100% % ANZA(4.16KV) - Customers: rd Party 100% 100% 33% % 79% 92% 66% % % % 72% 96% - 31% 32% 40% Equipment Failure % 100% 100% - 10% 2% 34% Operation % 6% % 100% - 28% 4% - 19% 2% - Other % % % 27% 50% 17% % 33% 20% Weather/Fire/Earthquake % 50% 67% % 33% 40% ARBORVITAE(4.16KV) - Customers: 1, rd Party % Equipment Failure 24% 6% 50% 6% 2% - 50% 51% 25% % 100% % 23% - Operation 37% 88% % 0% % 100% % 77% - Other 39% 6% 50% 94% 98% 100% 50% 49% 63%

20 Reliability Histories for Individual Circuits Serving South Bay Cities - 4 of 74 CircuitHistory 4 SAIDI SAIDI SAIDI SAIDI ARCTURUS(4.16KV) - Customers: Equipment Failure % 49% % 100% % 50% - Operation % 0% 1% % 1% - Other % 18% 73% Vegetation/Animal % 100% Weather/Fire/Earthquake % 82% - 25% 50% % 50% - ARIZONA(4.16KV) - Customers: 1, rd Party % Equipment Failure 82% 64% % 100% Operation 18% 36% - 7% 1% Other % 99% ARTISANO(16KV) - Customers: rd Party % 69% 47% 2% Equipment Failure Operation % 53% 2% Other % Vegetation/Animal % 0% Weather/Fire/Earthquake 100% 100% 3% % ARVANA(16KV) - Customers: 3, rd Party % 40% - 61% 45% 100% 100% 100% 100% % 48% 15% Equipment Failure 99% 100% 100% 1% 1% % 98% % 100% 100% 81% 52% 85% Operation 1% 0% - 2% 20% - 17% 50% % 2% % 0% - 0% 0% - Other % 17% 100% 22% 5% Weather/Fire/Earthquake % 22%

21 Reliability Histories for Individual Circuits Serving South Bay Cities - 5 of 74 CircuitHistory 5 SAIDI SAIDI SAIDI SAIDI ASPEN(16KV) - Customers: 1, Equipment Failure 69% 3% - 36% 41% - 45% 52% - 61% 53% 100% % 37% 9% Operation % 48% - 39% 47% % 100% - 100% 100% - 33% 42% - Other 31% 97% 100% % % % Vegetation/Animal % 59% % % 100% % 21% - AZALIA(4.16KV) - Customers: rd Party 95% 99% Equipment Failure 5% 1% - 100% 100% % 52% 33% 100% 100% 100% % 55% 49% Operation % 100% - 5% 48% 67% % 45% 51% AZURE(4.16KV) - Customers: rd Party % 45% Equipment Failure 47% 53% - 28% 10% - 10% 3% 100% % 97% - 47% 55% - Operation % 2% - 100% 100% - 100% 100% % 3% - 53% 45% - Other 53% 47% 100% % 95% Weather/Fire/Earthquake % 46% BACH(12KV) - Customers: 1, rd Party % % Equipment Failure 100% 100% 26% 100% 100% - 68% 52% 39% 100% 100% - 100% 100% % 100% - Operation % 2% 20% Other % % 47% 20% % % % Vegetation/Animal % % Weather/Fire/Earthquake % %

22 Reliability Histories for Individual Circuits Serving South Bay Cities - 6 of 74 CircuitHistory 6 SAIDI SAIDI SAIDI SAIDI BACHELOR(16KV) - Customers: 1, rd Party 63% 68% % 65% 30% % 38% 100% 100% 100% 100% 63% 37% 78% Equipment Failure 37% 32% 42% % 11% - 100% 100% - 8% 7% % 1% - Operation 0% 0% % 1% % 92% 93% - 33% 62% % 62% 22% Other % % 8% 23% 25% Vegetation/Animal % % Weather/Fire/Earthquake - - 0% BALLAST(16KV) - Customers: 2, rd Party % % 0% 100% % 0% 50% Equipment Failure 99% 96% - 22% 76% - 20% 20% % 4% % 100% - 44% 23% - Operation 0% 3% - 78% 24% - 80% 80% % 96% % 77% - Other % % % Vegetation/Animal 1% 1% 100% % BALLONA(16KV) - Customers: rd Party % Equipment Failure 100% 100% 54% 5% 5% 36% % 100% - 100% 100% % 99% - Operation % 100% - 1% 1% - Vegetation/Animal % % Weather/Fire/Earthquake % 95% 64% BANCROFT(16KV) - Customers: Equipment Failure 100% 100% - 100% 100% - 100% 100% 56% % 100% % 100% - Operation % Vegetation/Animal % %

23 Reliability Histories for Individual Circuits Serving South Bay Cities - 7 of 74 CircuitHistory 7 SAIDI SAIDI SAIDI SAIDI BARGE(4.16KV) - Customers: 1, rd Party % 48% 16% Equipment Failure % 17% 14% 26% 64% 67% 50% % 100% - 77% 47% - Operation % 1% - 36% 33% % 100% % 53% - Other % 37% 58% % BARRACUDA(16KV) - Customers: rd Party % 51% Equipment Failure % 0% % 68% 100% 10% 52% 100% Operation 100% 100% 50% % 100% % 32% - 90% 48% - Other % Vegetation/Animal % 48% BAUXITE(16KV) - Customers: 2, rd Party 58% 25% % Equipment Failure % 53% 78% 77% 74% 39% Operation 42% 75% - 40% 9% 22% 10% 6% - 100% 100% % 100% - Other % 20% Vegetation/Animal % 37% % Weather/Fire/Earthquake % 0% BENHILL(16KV) - Customers: 1, Equipment Failure % 100% 100% % 56% - 96% 68% 100% Operation 100% 100% % 100% % 44% - 4% 32% - Other % Vegetation/Animal % % 0% 100%

24 Reliability Histories for Individual Circuits Serving South Bay Cities - 8 of 74 CircuitHistory 8 SAIDI SAIDI SAIDI SAIDI BERYL(4.16KV) - Customers: rd Party % 50% 37% Equipment Failure % 25% 41% 34% 5% Operation 100% 100% - 0% 0% - 66% 95% % 100% % 100% - Other % Weather/Fire/Earthquake % 24% BLACKJACK(16KV) - Customers: Equipment Failure % 94% - 1% 0% % 100% % 97% - Operation % 6% - 99% 100% % 100% % 3% - Other % Vegetation/Animal % BLACKWATER(4.16KV) - Customers: Equipment Failure Operation Vegetation/Animal % % BLAKE(16KV) - Customers: 3, rd Party % 96% 100% Equipment Failure 98% 99% 100% 100% 100% 100% % 100% - 79% 46% % 0% - Operation 2% 1% % 4% - 100% 100% % 54% - 100% 100% - 95% 100% - Vegetation/Animal % % 24

25 Reliability Histories for Individual Circuits Serving South Bay Cities - 9 of 74 CircuitHistory 9 SAIDI SAIDI SAIDI SAIDI BLIMP(16KV) - Customers: 3, rd Party % % 6% % 1% - Equipment Failure 51% 59% - 65% 52% 23% 27% 16% - 67% 8% - 3% 0% - 93% 66% 100% 94% 96% - 84% 46% 49% Operation % 46% - 7% 3% - 33% 92% - 81% 94% - 7% 34% % 51% - Other % 2% - 25% 6% 21% % % Vegetation/Animal 6% 0% 50% % Weather/Fire/Earthquake 43% 40% 50% % 42% 75% 58% % 4% - 3% 2% - BLOCKER(16KV) - Customers: 4, rd Party 82% 98% 33% % % 14% % 2% - Equipment Failure 12% 1% - 90% 96% 59% 10% 2% - 7% 2% - 98% 88% - 38% 86% - 66% 80% - 76% 55% - Operation % 1% - 24% 32% 49% 5% 4% - 2% 12% 100% % 20% - 4% 8% 100% Other % 9% 4% - 15% 3% Vegetation/Animal % % 30% 51% Weather/Fire/Earthquake 6% 2% % 32% - 88% 95% % 35% - BLOODSTONE(4.16KV) - Customers: rd Party % Equipment Failure % 95% 33% 87% 71% - 100% 100% % % 100% 100% Operation % 5% - 13% 29% Weather/Fire/Earthquake % BLOSSOM(16KV) - Customers: 1, rd Party % Equipment Failure 9% 29% - 2% 2% % 100% % 3% - Operation 91% 71% 100% % 100% Other % Weather/Fire/Earthquake % 98% % 100% 100% % 97% 100% 25

26 Reliability Histories for Individual Circuits Serving South Bay Cities - 10 of st Qtr nd Qtr rd Qtr 2017 CircuitHistory10 4th Qtr SAIDI SAIDI SAIDI SAIDI BLUEGILL(16KV) - Customers: 3, Equipment Failure 5% 0% - 11% 26% 12% 41% 35% 19% 1% 1% % 100% % 12% - Operation % 24% 0% 3% 3% 34% 1% 30% % 25% - Other 48% 64% 72% 39% 31% 24% % 69% 100% % 100% - 91% 63% 100% Vegetation/Animal 47% 35% 28% 36% 20% 30% 15% 55% 40% Weather/Fire/Earthquake % 40% 8% 7% BOEING(16KV) - Customers: 2, Equipment Failure % 1% - 100% 100% - 17% 1% % % 1% 100% Operation 40% 7% 48% % 7% 11% Other % 85% 92% % 99% % 99% - Weather/Fire/Earthquake 60% 93% 52% % BOLTON(16KV) - Customers: 2, rd Party 25% 37% 53% % % 86% 100% % 27% 55% Equipment Failure 14% 5% - 0% 0% - 4% 0% 28% 77% 69% - 3% 1% - 56% 93% 100% % 49% 29% Operation 58% 57% 18% 81% 73% 28% 2% 4% 29% 1% 1% - 20% 13% - 44% 7% - 100% 100% - 12% 5% - Other % 27% 72% 94% 96% 16% Vegetation/Animal % Weather/Fire/Earthquake 2% 2% % 31% 100% % 18% 16% BOND(12KV) - Customers: Equipment Failure 100% 100% Operation

27 Reliability Histories for Individual Circuits Serving South Bay Cities - 11 of 74 SAIDI SAIDI SAIDI SAIFI MAIFI SAIDI CircuitHistory11 SAIDI SAIFI MAIFI BORDEN(4.16KV) - Customers: 1, rd Party % % 49% 20% Equipment Failure 100% 100% - 13% 2% - 6% 1% % 100% - 100% 100% - Operation % 98% - 37% 50% Other % BRAMBLE(16KV) - Customers: Equipment Failure Operation Other % Vegetation/Animal % BRINE(12KV) - Customers: rd Party 86% 20% 60% 22% 8% % Equipment Failure 14% 79% - 78% 91% % 99% 100% % % 95% 53% Operation 0% 1% - 1% 1% - 100% 100% % 1% - 100% 100% % 5% - Other % Vegetation/Animal % % BRYANT(16KV) - Customers: Equipment Failure % 41% % 100% % 80% - Operation 14% 51% Vegetation/Animal 86% 49% 100% 46% 59% 100% 100% 100% 100% 100% 100% % 20% - 27

28 Reliability Histories for Individual Circuits Serving South Bay Cities - 12 of 74 CircuitHistory12 SAIDI SAIDI SAIDI SAIDI BUDLONG(4.16KV) - Customers: 2, rd Party 79% 88% 100% % 17% 31% Equipment Failure 21% 12% % 37% 100% Operation % 32% Other % BUNGALOW(16KV) - Customers: Equipment Failure % % Operation 100% 100% Vegetation/Animal % % % BURLEIGH(4.16KV) - Customers: rd Party % % % 86% 100% 100% 100% 100% % 93% 100% Equipment Failure 100% 100% 100% % 66% 25% % 14% % 7% - Operation % 34% Other % BURMA(16KV) - Customers: rd Party 33% 9% 17% 84% 98% Equipment Failure 66% 91% 11% 16% 2% % % 100% 100% 88% 65% 49% Operation % % 100% % 35% - Other % % % Vegetation/Animal % Weather/Fire/Earthquake 1% 0% 18%

29 Reliability Histories for Individual Circuits Serving South Bay Cities - 13 of 74 SAIDI SAIDI SAIDI SAIDI CircuitHistory13 BUTANE(16KV) - Customers: 4, rd Party 94% 89% % 0% Equipment Failure 6% 10% - 71% 59% 5% 89% 93% 34% 2% 1% - 96% 92% 100% % 90% 33% Operation 0% 1% - 1% 0% - 0% 0% - 98% 99% - 2% 7% - 100% 100% - 100% 100% - 7% 9% - Other % 28% 41% % % Vegetation/Animal % % 11% 7% 66% % 1% 1% % 1% 33% CABRILLO(4.16KV) - Customers: Equipment Failure Operation Other 100% 100% 100% Vegetation/Animal % Weather/Fire/Earthquake % 100% 62% CALM(12KV) - Customers: rd Party 76% 89% 100% 100% 100% % Equipment Failure 24% 11% Operation % 100% Other % 0% % Vegetation/Animal % % CAMINO REAL(4.16KV) - Customers: rd Party % Equipment Failure % 100% - 4% 1% Operation % 99% Other %

30 Reliability Histories for Individual Circuits Serving South Bay Cities - 14 of 74 SAIDI SAIDI SAIDI SAIDI CircuitHistory14 CARNELIAN(16KV) - Customers: 4, rd Party % 0% 50% % 100% 100% % 17% 82% Equipment Failure 100% 100% 50% 99% 99% - 64% 52% 52% % 88% 100% 40% 30% - 18% 71% 18% Operation 0% 0% - 0% 1% - 30% 45% % 12% - 60% 70% - 7% 12% - Other % 7% 2% 48% Weather/Fire/Earthquake % CARTER(4.16KV) - Customers: rd Party 100% 100% 25% 18% 70% - 31% 5% 27% % % Equipment Failure % 29% - 33% 37% 18% 95% 98% % 98% - Operation % 1% - 33% 23% - 5% 2% % 2% - Other % % 35% 55% % % CASWELL(16KV) - Customers: rd Party % 100% 28% % 50% 22% Equipment Failure % 100% 11% % 100% % 0% - Operation 100% 100% - 100% 100% 63% Other % 100% 100% 100% % 50% 22% Vegetation/Animal % % % % Weather/Fire/Earthquake % CATALINA(4.16KV) - Customers: rd Party % 44% 8% 100% Equipment Failure 100% 100% - 100% 100% - 13% 3% % 100% - 100% 100% - 25% 8% - Operation % % 89% % 100% % 1% - Other % Weather/Fire/Earthquake % 100% % 91% - 30

31 Reliability Histories for Individual Circuits Serving South Bay Cities - 15 of 74 SAIDI SAIDI SAIDI SAIDI CircuitHistory15 CATALYTIC(12KV) - Customers: Equipment Failure Operation Vegetation/Animal 100% 100% 100% CENTINELA(16KV) - Customers: rd Party % 97% Equipment Failure 100% 100% - 9% 3% - 23% 50% % 100% 100% 51% 10% 100% Operation % 50% - 100% 100% % 90% - Other % Vegetation/Animal % CENTURY(4.16KV) - Customers: rd Party % % % % Equipment Failure % 99% 60% % 50% - 29% 40% - 100% 100% - 93% 49% - Operation % 1% - 100% 100% - 100% 100% % 40% % 7% - Other % 50% 100% 30% 20% % 44% 50% Weather/Fire/Earthquake % CHADRON(16KV) - Customers: rd Party 49% 50% 34% % 25% % 86% 100% % 4% 50% Equipment Failure 51% 50% % 50% 50% % 14% % 1% - Operation % 100% - 27% 25% % 100% - 95% 95% - Vegetation/Animal % % % % % 31

32 Reliability Histories for Individual Circuits Serving South Bay Cities - 16 of st Qtr nd Qtr rd Qtr 2017 CircuitHistory16 4th Qtr SAIDI SAIDI SAIDI SAIDI CHEMICAL(16KV) - Customers: Equipment Failure 94% 79% - 26% 19% Operation 6% 21% Other % 81% CHICO(16KV) - Customers: 2, rd Party % 1% 50% Equipment Failure 8% 16% - 34% 12% 59% 49% 26% % 92% - 100% 100% % 28% - Operation 24% 12% - 22% 21% - 44% 66% 50% % 8% % 100% - 40% 72% - Other 68% 72% 100% 0% 0% 41% 7% 7% Weather/Fire/Earthquake % 67% CHRIS(12KV) - Customers: 1, rd Party % 70% 71% % 100% - 100% 100% 100% % 68% 81% Equipment Failure 100% 100% 100% 59% 23% - 96% 99% 100% % 46% - 7% 15% - Operation 0% 0% - 6% 7% - 4% 1% Other % % 54% 100% 28% 17% 19% CIMARRON(16KV) - Customers: 3, rd Party 69% 71% 21% 0% 0% 50% 53% 34% 52% % 97% 99% 24% 100% 100% 100% 97% 98% 56% Equipment Failure % 95% 26% 5% 1% % 0% - 0% 0% - Operation 2% 0% - 3% 1% - 11% 38% - 100% 100% - 100% 100% - 3% 1% % 2% - Other % 1% % % % Vegetation/Animal 8% 1% 58% 8% 3% 25% 18% 23% 35% Weather/Fire/Earthquake 21% 28% 21% % 4% 13%

33 Reliability Histories for Individual Circuits Serving South Bay Cities - 17 of 74 SAIDI SAIDI SAIDI SAIDI CircuitHistory17 CLEO(4.16KV) - Customers: 1, Equipment Failure % 9% 100% % 80% % 80% - Operation % 63% 91% - 58% 51% % 20% % 20% - Weather/Fire/Earthquake 100% 100% 75% % 49% 100% CLIFTON(4.16KV) - Customers: rd Party % % 3% 100% % % 3% 100% Equipment Failure % 52% % 97% - 100% 100% % 91% - Operation % 45% - 100% 100% % 100% - 6% 7% - Other % 3% 50% CLIPPER(4.16KV) - Customers: Equipment Failure Operation Vegetation/Animal % % CODONA(4.16KV) - Customers: rd Party % 100% Equipment Failure % 100% % 100% - Operation 100% 100% 67% Other % 100% 100% 100% % % Vegetation/Animal % % 33

34 Reliability Histories for Individual Circuits Serving South Bay Cities - 18 of 74 SAIDI SAIDI SAIDI SAIDI CircuitHistory18 COMO(4.16KV) - Customers: 1, rd Party % % % Equipment Failure 36% 69% - 41% 11% Operation % 89% - 100% 100% - 100% 100% % 100% - Other % % Vegetation/Animal % Weather/Fire/Earthquake 64% 31% 39% COMPUTER(16KV) - Customers: Equipment Failure Operation Vegetation/Animal % % Weather/Fire/Earthquake % 100% 100% CONTINENT(16KV) - Customers: Equipment Failure % 46% - 100% 100% Operation Other % 54% COPRA(4.16KV) - Customers: Equipment Failure 100% 100% Operation % 100% 100% Other %

35 Reliability Histories for Individual Circuits Serving South Bay Cities - 19 of 74 SAIDI SAIDI SAIDI SAIDI CircuitHistory19 CORAL(4.16KV) - Customers: Equipment Failure % 100% 100% % % Operation % 100% Other % COUNTY(12KV) - Customers: Equipment Failure Operation COVEVIEW(16KV) - Customers: 1, Equipment Failure 100% 98% % 90% - 79% 26% % 26% - Operation 0% 2% - 100% 100% - 2% 10% - 21% 74% % 74% - CRANBROOK(4.16KV) - Customers: rd Party % % % 100% 100% % 98% 50% Equipment Failure 100% 100% 100% % 67% 33% % % Operation % 100% - 44% 33% % 100% - 5% 2% - 35

36 Reliability Histories for Individual Circuits Serving South Bay Cities - 20 of 74 SAIDI SAIDI SAIDI SAIDI CircuitHistory20 CRENSHAW(4.16KV) - Customers: 1, rd Party % % % Equipment Failure 22% 25% - 96% 50% % 100% % 100% - Operation 78% 75% - 4% 50% Vegetation/Animal % CRESTWIND(4.16KV) - Customers: rd Party % Equipment Failure 100% 100% - 30% 54% 67% 22% 79% 34% 100% 100% % 100% - Operation % 20% 33% 3% 4% Other % 17% Vegetation/Animal % 26% % CYLINDER(16KV) - Customers: 1, rd Party % 33% - 39% 33% Equipment Failure 9% 1% - 61% 34% - 22% 32% 97% 98% 99% 100% % 98% 100% Operation % 34% - 8% 32% - 2% 1% % 100% % 2% - Other % 3% 3% Weather/Fire/Earthquake 91% 99% 100% DAHLIA(4.16KV) - Customers: rd Party % % 100% 100% Equipment Failure % 100% - 100% 100% - 71% 13% - Operation % 100% % 100% 67% % 87% 67% Other % % % 36

37 Reliability Histories for Individual Circuits Serving South Bay Cities - 21 of 74 SAIDI SAIDI SAIDI SAIDI CircuitHistory21 DALESIDE(16KV) - Customers: 3, rd Party 58% 50% 22% % % 100% 100% % 80% 50% Equipment Failure % 97% 4% 60% 60% 33% % 100% % 5% - Operation 24% 1% 26% 0% 1% - 40% 40% % 100% - 2% 2% - Vegetation/Animal 18% 50% 26% 3% 3% 96% % 100% 100% % 15% 13% 50% Weather/Fire/Earthquake 0% 0% 26% DARBY(4.16KV) - Customers: rd Party % % % Equipment Failure % % Operation % 2% - 4% 4% Other % % 87% Vegetation/Animal % 98% 100% % Weather/Fire/Earthquake % 9% - 100% 100% 100% % 100% 26% DEBORAH(16KV) - Customers: 2, rd Party % 47% 74% 89% 55% 41% Equipment Failure 40% 56% 27% 90% 50% 26% 2% 0% Operation 0% 0% - 2% 3% - 1% 0% Other % % Vegetation/Animal % 45% Weather/Fire/Earthquake 60% 44% 45% DELID(4.16KV) - Customers: 1, rd Party 100% 100% 47% % % 100% % 94% - Equipment Failure % 1% Operation % 60% % 100% - 4% 6% - Other % 44% 39% 46% % % 37