massoutage

2024 Montana Power Outage Report

In 2024, the average Montana customer went without power for about 8.5 hours — the 20th worst of any US state that year, 2.3× the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
8.5
Peak customers out
55,225
Rank (worst state)
20th
Counties affected
20

Montana outages over the decade

Average hours without power per customer, 2024 highlighted.

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

Hardest-hit Montana counties in 2024

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

1Missoula County55,2252Flathead County16,9113Yellowstone County14,8484Gallatin County12,8435Cascade County12,0246Ravalli County9,2417Lincoln County8,5858Deer Lodge County7,1059Hill County6,20310Madison County3,68711Lake County3,41212Carbon County3,38313Lewis and Clark County3,21114Powell County2,99315Mineral County2,86716Fergus County2,80117Valley County2,76718Jefferson County2,68119Dawson County2,44120Silver Bow County2,049

Biggest Montana outages of 2024

CountyBeganPeak customers out
Missoula CountyJuly 24, 202455,225
Flathead CountyNovember 23, 202416,911
Yellowstone CountyAugust 6, 202414,848
Flathead CountyAugust 23, 202413,504
Gallatin CountyAugust 29, 202412,843
Cascade CountyOctober 4, 202412,024
Gallatin CountySeptember 12, 202411,492
Cascade CountyMay 7, 202410,468
Ravalli CountyAugust 23, 20249,241
Lincoln CountySeptember 25, 20248,585
Montana by year:20252023202220212020201920182017
Other states in 2024:NCSCMEGATXFL

Part of the 2024 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.