massoutage

2015 Washington Power Outage Report

In 2015, the average Washington customer went without power for about 9.1 hours — the 2nd worst of any US state that year, 1.6× the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
9.1
Peak customers out
251,333
Rank (worst state)
2nd
Counties affected
20

Washington outages over the decade

Average hours without power per customer, 2015 highlighted.

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

Hardest-hit Washington counties in 2015

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

1Spokane County251,3332King County117,2623Whatcom County54,3724Kitsap County51,9515Pierce County38,9546Thurston County25,1097Skagit County22,5708Whitman County16,9599Island County15,39710Stevens County11,54611Kittitas County3,04612Lincoln County2,72113Adams County2,57514Ferry County1,62615Asotin County74416Snohomish County14617Franklin County3918Garfield County1019Pend Oreille County820Mason County8

Biggest Washington outages of 2015

CountyBeganPeak customers out
Spokane CountyNovember 17, 2015251,333
Spokane CountyNovember 18, 2015224,158
King CountyAugust 25, 2015117,262
King CountyNovember 12, 2015114,507
King CountyOctober 12, 201564,221
King CountyNovember 18, 201555,641
Whatcom CountyAugust 26, 201554,372
Kitsap CountyNovember 17, 201551,951
King CountyDecember 2, 201551,236
Kitsap CountyNovember 24, 201550,214
Washington by year:20252024202320222021202020192018
Other states in 2015:WVNCMIRILAOK

Part of the 2015 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.