massoutage

2021 Wyoming Power Outage Report

In 2021, the average Wyoming customer went without power for about 2.2 hours — the 42nd worst of any US state that year, 1.2× the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
2.2
Peak customers out
7,526
Rank (worst state)
42nd
Counties affected
20

Wyoming outages over the decade

Average hours without power per customer, 2021 highlighted.

0.4h20150.6h20160.9h20171.2h20181.3h20193.4h20202.2h20212.4h20222.0h20232.4h20243.8h2025

Hardest-hit Wyoming counties in 2021

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

1Natrona County7,5262Fremont County5,3073Sweetwater County5,0584Sublette County4,1705Laramie County3,5296Park County3,2227Sheridan County2,7848Albany County2,6539Converse County2,60910Big Horn County2,30311Lincoln County2,20012Campbell County2,20013Crook County1,46214Uinta County1,27815Johnson County1,23616Hot Springs County99817Weston County84718Carbon County76819Platte County30120Washakie County176

Biggest Wyoming outages of 2021

CountyBeganPeak customers out
Natrona CountyApril 2, 20217,526
Fremont CountyJuly 2, 20215,307
Sweetwater CountyFebruary 7, 20215,058
Fremont CountyDecember 9, 20215,041
Sublette CountyMay 16, 20214,170
Laramie CountyMarch 15, 20213,529
Park CountyFebruary 2, 20213,222
Laramie CountyJune 9, 20212,881
Fremont CountyAugust 20, 20212,807
Sheridan CountyOctober 12, 20212,784
Wyoming 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.