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2018 Montana Power Outage Report

In 2018, the average Montana customer went without power for about 1.9 hours — the 42nd worst of any US state that year, below the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
1.9
Peak customers out
12,775
Rank (worst state)
42nd
Counties affected
20

Montana outages over the decade

Average hours without power per customer, 2018 highlighted.

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

Hardest-hit Montana counties in 2018

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

1Flathead County12,7752Lincoln County5,6343Richland County2,8644Sanders County1,3465Sheridan County1,1946Rosebud County1,1437Custer County9698Dawson County8199Roosevelt County68710Daniels County53311Lake County46612Wibaux County36613Park County34514Prairie County11415Fallon County8516Carter County3317Powder River County1518Mineral County819Madison County520Carbon County1

Biggest Montana outages of 2018

CountyBeganPeak customers out
Flathead CountyOctober 31, 201812,775
Flathead CountyOctober 15, 20186,684
Flathead CountyMay 16, 20185,882
Lincoln CountyMay 11, 20185,634
Richland CountyFebruary 13, 20182,864
Flathead CountyJune 3, 20182,608
Flathead CountyJanuary 19, 20182,389
Lincoln CountyFebruary 9, 20182,252
Flathead CountyMay 7, 20181,824
Lincoln CountyJune 22, 20181,790
Montana by year:20252024202320222021202020192017
Other states in 2018:NCVAWVMARIVT

Part of the 2018 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.