massoutage

2021 Colorado Power Outage Report

In 2021, the average Colorado customer went without power for about 2.8 hours — the 34th worst of any US state that year, 1.1× the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
2.8
Peak customers out
33,979
Rank (worst state)
34th
Counties affected
20

Colorado outages over the decade

Average hours without power per customer, 2021 highlighted.

1.2h20151.7h20161.5h20171.6h20183.3h20192.2h20202.8h20212.6h20222.1h20234.7h20244.6h2025

Hardest-hit Colorado counties in 2021

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

1El Paso County33,9792Weld County31,7333Boulder County29,6934Jefferson County26,5435Douglas County24,2046Denver County23,4777Mesa County23,0308Adams County18,8569Pueblo County17,25810Larimer County12,87911Arapahoe County11,28012La Plata County8,83413Logan County8,05314Eagle County5,66215Elbert County5,44416Teller County5,09317Otero County4,92018Park County4,78019Summit County4,65320Garfield County4,451

Biggest Colorado outages of 2021

CountyBeganPeak customers out
El Paso CountyDecember 15, 202133,979
Weld CountyMarch 14, 202131,733
Boulder CountyDecember 30, 202129,693
Jefferson CountyDecember 15, 202126,543
Jefferson CountyDecember 30, 202125,418
Douglas CountyJune 28, 202124,204
Denver CountyOctober 18, 202123,477
Mesa CountyMay 24, 202123,030
Mesa CountyMay 24, 202123,014
Denver CountyDecember 14, 202121,867
Colorado 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.