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2023 Montana Power Outage Report

In 2023, the average Montana customer went without power for about 1.8 hours — the 49th worst of any US state that year, below the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
1.8
Peak customers out
7,478
Rank (worst state)
49th
Counties affected
20

Montana outages over the decade

Average hours without power per customer, 2023 highlighted.

2.3h20151.8h20162.7h20171.9h20180.6h20195.6h20205.0h20213.5h20221.8h20238.5h20246.8h2025

Hardest-hit Montana counties in 2023

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

1Missoula County7,4782Beaverhead County6,1803Lincoln County5,7854Lewis and Clark County5,3825Silver Bow County4,0646Flathead County3,5837Yellowstone County3,1498Lake County3,0849Carbon County2,78910Custer County2,69111Ravalli County2,66712Phillips County1,94013Dawson County1,93114Mineral County1,92915Cascade County1,90416Hill County1,71717Gallatin County1,61518Fergus County1,56119Chouteau County1,51620Deer Lodge County1,437

Biggest Montana outages of 2023

CountyBeganPeak customers out
Missoula CountyMay 9, 20237,478
Missoula CountyDecember 20, 20236,344
Beaverhead CountyAugust 8, 20236,180
Lincoln CountyJune 3, 20235,785
Missoula CountyMarch 21, 20235,397
Lewis and Clark CountyMarch 29, 20235,382
Silver Bow CountyFebruary 16, 20234,064
Missoula CountyDecember 20, 20233,746
Flathead CountyJune 11, 20233,583
Flathead CountyNovember 17, 20233,513
Montana 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.