massoutage

2021 Washington Power Outage Report

In 2021, the average Washington customer went without power for about 8.7 hours — the 9th worst of any US state that year, 1.6× the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
8.7
Peak customers out
215,586
Rank (worst state)
9th
Counties affected
20

Washington outages over the decade

Average hours without power per customer, 2021 highlighted.

9.1h20153.2h20163.3h20172.1h20182.0h20194.2h20208.7h20216.6h20222.6h202312.1h20247.0h2025

Hardest-hit Washington counties in 2021

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

1King County215,5862Pierce County107,4033Snohomish County84,9764Spokane County48,5905Island County48,2786Thurston County39,4557Clark County28,5818Kitsap County27,9109Mason County23,19210Skagit County21,17511Whatcom County17,65112Clallam County17,35113San Juan County14,43114Jefferson County11,00215Stevens County10,77116Yakima County10,32717Walla Walla County7,29018Lewis County6,13219Kittitas County4,22820Benton County4,072

Biggest Washington outages of 2021

CountyBeganPeak customers out
King CountyJanuary 11, 2021215,586
King CountyOctober 21, 2021110,243
Pierce CountyJanuary 7, 2021107,403
Snohomish CountyJanuary 13, 202184,976
Pierce CountySeptember 17, 202155,715
Spokane CountyJanuary 13, 202148,590
Island CountyJanuary 13, 202148,278
King CountySeptember 7, 202140,660
Island CountyNovember 15, 202139,506
Thurston CountyJanuary 12, 202139,455
Washington by year:20252024202320222020201920182017
Other states in 2021:LAMIWVTXORMS

Part of the 2021 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.