massoutage

2023 California Power Outage Report

In 2023, the average California customer went without power for about 7.9 hours, the 17th worst of 51 states (US average 6.7 hours). Figures from DOE/ORNL EAGLE-I, including major storm days.

Avg hrs / customer
7.9
vs prior year
▲ 63%
vs 2022
Customer-hours out
124.8M
Peak customers out
547,151
across the state at once
EAGLE-I coverage
n/a
of CA customers
Counties reporting
58

California year over year

California: average hours without power per customer by year2015: 3.1h; 2016: 2.5h; 2017: 2.2h; 2018: 3.7h, coverage 91%; 2019: 9.3h, coverage 93%; 2020: 6.2h, coverage 94%; 2021: 6.6h, coverage 95%; 2022: 4.9h, coverage 95%; 2023: 7.9h; 2024: 6.1h; 2025: 7.5h02.557.5100%50%100%3.1h20152.5h20162.2h20173.7h20189.3h20196.2h20206.6h20214.9h20227.9h20236.1h20247.5h2025
Use the arrow keys to read values.
Average hours without power per customer. Line: EAGLE-I coverage, share of customers tracked (right axis).

Month by month, 2023

Customer-hours without power across California; January was the worst.

CSVJSON
California customer-hours without power by month, 2023Jan 31.4M, Feb 16.4M, Mar 27.7M, Apr 4.3M, May 3.8M, Jun 4.5M, Jul 6.6M, Aug 9.0M, Sep 5.8M, Oct 6.4M, Nov 5.1M, Dec 3.7M010M20M30M40M31.4MJan16.4MFeb27.7MMar4.3MApr3.8MMay4.5MJun6.6MJul9.0MAug5.8MSep6.4MOct5.1MNov3.7MDec
Use the arrow keys to read values.

All 58 California counties, 2023

Ranked by average hours without power per customer. Each county links to its annual report.

CSVJSON
#CountyHrs / customerCustomer-hoursCustomersPeak outEvents
1Sierra County177.8368K2,0722,072129
2Mono County132.8737K5,5515,551181
3Mariposa County110.3801K7,2627,262407
4Del Norte County108.01.7M16,19512,963497
5Tuolumne County85.42.0M23,61023,610434
6Lake County58.61.7M28,39728,397540
7Calaveras County57.11.1M18,4179,064466
8Amador County51.2874K17,05013,776445
9Mendocino County48.51.9M39,04115,851502
10Nevada County47.52.5M52,25123,080488
11Santa Cruz County47.45.6M118,29930,226346
12Humboldt County43.42.6M59,96217,785455
13El Dorado County34.03.3M95,67224,131400
14Madera County23.11.6M68,50314,975487
15San Mateo County22.97.5M328,40867,816214
16Plumas County21.9202K9,2309,230353
17Monterey County21.64.2M195,57563,153255
18Inyo County20.8149K7,2013,818122
19Tehama County18.6524K28,13415,911529
20Yolo County17.91.8M101,50927,261442
21Alpine County17.916K88260577
22Yuba County17.7636K35,9339,030579
23Sacramento County14.49.0M625,566348,829439
24Marin County13.71.5M113,04420,584497
25Siskiyou County13.0346K26,60512,589584
26Butte County12.01.1M90,5439,051511
27Napa County11.9758K63,8286,591494
28Sonoma County10.72.3M214,12725,464495
29Santa Clara County10.79.0M844,715138,98257
30Shasta County10.6864K81,28210,336463
31San Luis Obispo County9.61.2M125,72721,675386
32San Joaquin County9.63.1M324,54343,541298
33Glenn County8.9109K12,2332,407451
34San Francisco County8.81.8M209,75338,880620
35Merced County8.0448K56,0776,429675
36Contra Costa County8.03.9M486,94580,988269
37Sutter County7.8329K42,3235,020540
38Placer County6.91.3M187,5256,405522
39Santa Barbara County6.71.3M192,08012,480318
40Alameda County5.74.3M751,61675,396179
41Colusa County5.656K9,9702,506403
42San Bernardino County5.64.7M840,55539,811217
43Tulare County5.61.0M186,93921,167333
44Solano County5.31.0M187,69023,799261
45Kings County4.8301K62,99810,978448
46Los Angeles County4.717.8M3,762,60046,6637
47Fresno County4.62.1M458,08419,144150
48Ventura County4.51.4M317,65813,216488
49Kern County4.21.7M395,01541,280169
50San Benito County4.0108K26,7031,713452
51Riverside County3.53.0M853,92320,052283
52San Diego County2.63.6M1,362,92921,564219
53Orange County2.63.2M1,255,53078,247381
54Modoc County1.17,3156,5981,226159
55Imperial County1.073K72,6912,83479
56Stanislaus County0.6128K219,1566,380535
57Lassen County0.57,33815,44036850
58Trinity County-90K-753152

Biggest California outages of 2023

Up to 25 county outage episodes with the most customers out at once.

CSVJSON
#CountyStarted (UTC)Ended (UTC)DurationPeak outCustomer-hours
1Sacramento County, CAJanuary 1, 2023 00:00January 17, 2023 06:0016d 6h348,8298.1M
2Santa Clara County, CAFebruary 20, 2023 16:45April 7, 2023 11:4545d 19h138,9825.5M
3Contra Costa County, CAMarch 13, 2023 13:30March 19, 2023 04:305d 15h80,9881.0M
4Orange County, CASeptember 5, 2023 15:45September 6, 2023 14:3022h 45m78,24787K
5Alameda County, CASeptember 9, 2023 09:15September 11, 2023 09:302d75,39622K
6Santa Clara County, CAJanuary 10, 2023 10:15January 10, 2023 20:1510h68,962373K
7San Mateo County, CAMarch 1, 2023 13:00March 19, 2023 04:3017d 15h67,8161.9M
8Monterey County, CAJune 1, 2023 03:30June 2, 2023 11:001d 7h63,15337K
9San Mateo County, CAFebruary 21, 2023 15:30March 1, 2023 07:307d 16h62,7921.9M
10Alameda County, CAMarch 19, 2023 05:30March 30, 2023 10:1511d 4h57,8571.4M
11Alameda County, CAFebruary 17, 2023 15:30February 26, 2023 17:009d 1h55,724581K
12San Mateo County, CAMay 15, 2023 14:15May 17, 2023 12:001d 21h51,41652K
13Contra Costa County, CAMarch 19, 2023 05:30April 1, 2023 13:3013d 8h48,236547K
14Los Angeles County, CAJanuary 1, 2023 00:00May 9, 2023 12:15128d 12h46,6637.7M
15San Mateo County, CAMarch 19, 2023 05:30March 27, 2023 12:158d 6h45,9821.0M
16Los Angeles County, CAJune 11, 2023 13:45September 17, 2023 19:1598d 5h44,1224.4M
17San Joaquin County, CAJanuary 1, 2023 00:00January 7, 2023 08:006d 8h43,5411.4M
18San Mateo County, CAJanuary 1, 2023 00:00January 10, 2023 01:009d 1h42,6701.4M
19Kern County, CASeptember 7, 2023 03:15September 12, 2023 12:005d 8h41,28018K
20San Joaquin County, CAJanuary 7, 2023 15:00January 25, 2023 10:4517d 19h40,830956K
21Santa Clara County, CAJune 20, 2023 13:15July 23, 2023 04:1532d 15h40,257255K
22San Bernardino County, CAJanuary 1, 2023 00:30January 7, 2023 02:156d 1h39,811125K
23Los Angeles County, CASeptember 17, 2023 20:15October 19, 2023 00:3031d 4h39,4812.2M
24Monterey County, CAMarch 9, 2023 19:00March 19, 2023 04:309d 9h39,4482.3M
25San Francisco County, CAMarch 21, 2023 18:00March 25, 2023 03:153d 9h38,880462K
EAGLE-I tracked about n/a of California's electricity customers in 2023; outages at utilities it does not see are not counted. Hours per customer divide outage customer-minutes by modeled county customers.
California by year:2025202420222021202020192018201720162015
Other states in 2023:MEMIKYOKARWVLAMS

Part of the 2023 US Power Outage Report.

Data from DOE EAGLE-I, every source we read.