massoutage

2023 California Power Outage Report

In 2023, the average California customer went without power for about 7.9 hours — the 17th worst of any US state that year, 1.4× the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
7.9
Peak customers out
348,829
Rank (worst state)
17th
Counties affected
20

California outages over the decade

Average hours without power per customer, 2023 highlighted.

3.1h20152.5h20162.2h20173.7h20189.6h20196.3h20206.6h20214.9h20227.9h20236.1h20247.6h2025

Hardest-hit California counties in 2023

By peak customers out during the year's worst event.

1Sacramento County348,8292Santa Clara County138,9823Contra Costa County80,9884Orange County78,2475Alameda County75,3966San Mateo County67,8167Monterey County63,1538Los Angeles County46,6639San Joaquin County43,54110Kern County41,28011San Bernardino County39,81112San Francisco County38,88013Tuolumne County37,05014Lake County34,11115Santa Cruz County30,22616Yolo County27,26117Sonoma County25,46418El Dorado County24,13119Solano County23,79920Nevada County23,080

Biggest California outages of 2023

CountyBeganPeak customers out
Sacramento CountyJanuary 1, 2023348,829
Santa Clara CountyFebruary 20, 2023138,982
Contra Costa CountyMarch 13, 202380,988
Orange CountySeptember 5, 202378,247
Alameda CountySeptember 9, 202375,396
Santa Clara CountyJanuary 10, 202368,962
San Mateo CountyMarch 1, 202367,816
Monterey CountyJune 1, 202363,153
San Mateo CountyFebruary 21, 202362,792
Alameda CountyMarch 19, 202357,857
California by year:20252024202220212020201920182017
Other states in 2023:MEMIKYOKARWV

Part of the 2023 US Power Outage Report. Source: DOE/ORNL EAGLE-I. “Avg hours per customer” is a SAIDI-like measure (outage customer-minutes ÷ tracked customers); coverage varies by year.