PowerOutageHistory

Montana Power Outage History

50 counties tracked, 2014–2025. County-level reliability grades and outage frequency below.

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Counties tracked
50
Avg national percentile
67th
Higher = more reliable
Grade F counties
1

Montana county map

GarfieldLiberty County: Grade B (click for details)Golden Valley County: Grade C (click for details)Beaverhead County: Grade A (click for details)Wheatland County: Grade C (click for details)Lewis and Clark County: Grade B (click for details)Ravalli County: Grade B (click for details)Flathead County: Grade D (click for details)Sanders County: Grade D (click for details)PetroleumBroadwater County: Grade A (click for details)Musselshell County: Grade B (click for details)Wibaux County: Grade B (click for details)Richland County: Grade A (click for details)Roosevelt County: Grade A (click for details)Phillips County: Grade B (click for details)Yellowstone County: Grade A (click for details)Meagher County: Grade D (click for details)Custer County: Grade A (click for details)Powder River County: Grade A (click for details)Lincoln County: Grade F (click for details)Gallatin County: Grade A (click for details)Jefferson County: Grade B (click for details)Judith Basin County: Grade C (click for details)Teton County: Grade C (click for details)Mineral County: Grade D (click for details)Deer Lodge County: Grade A (click for details)Silver Bow County: Grade A (click for details)Madison County: Grade D (click for details)Fallon County: Grade A (click for details)Carter County: Grade AHill County: Grade B (click for details)Fergus County: Grade A (click for details)Chouteau County: Grade D (click for details)McConeValley County: Grade C (click for details)TreasureStillwater County: Grade A (click for details)Lake County: Grade A (click for details)Missoula County: Grade C (click for details)Powell County: Grade C (click for details)GlacierRosebud County: Grade B (click for details)Sweet Grass County: Grade C (click for details)Pondera County: Grade B (click for details)Daniels County: Grade A (click for details)Park County: Grade B (click for details)Prairie County: Grade B (click for details)Big Horn County: Grade A (click for details)Dawson County: Grade A (click for details)Blaine County: Grade B (click for details)TooleSheridan County: Grade B (click for details)Granite County: Grade D (click for details)Carbon County: Grade B (click for details)Cascade County: Grade B (click for details)

Hover a county for its reliability grade

Reliability grade:ABCDF

County rankings (worst to best)

CountyGradeNational percentile
Lincoln CountyF14th
Sanders CountyD20th
Madison CountyD31st
Granite CountyD33rd
Flathead CountyD35th
Chouteau CountyD37th
Meagher CountyD38th
Mineral CountyD39th
Teton CountyC41st
Missoula CountyC42nd
Wheatland CountyC48th
Valley CountyC49th
Judith Basin CountyC49th
Sweet Grass CountyC54th
Powell CountyC55th
Golden Valley CountyC58th
Carbon CountyB61st
Musselshell CountyB61st
Blaine CountyB64th
Park CountyB66th
Phillips CountyB69th
Liberty CountyB69th
Wibaux CountyB69th
Cascade CountyB69th
Prairie CountyB71st
Ravalli CountyB72nd
Hill CountyB72nd
Lewis and Clark CountyB73rd
Sheridan CountyB75th
Pondera CountyB76th
Jefferson CountyB77th
Rosebud CountyB78th
Lake CountyA80th
Daniels CountyA81st
Broadwater CountyA81st
Fergus CountyA82nd
Richland CountyA83rd
Deer Lodge CountyA83rd
Beaverhead CountyA84th
Custer CountyA87th
Yellowstone CountyA89th
Silver Bow CountyA89th
Stillwater CountyA90th
Gallatin CountyA92nd
Dawson CountyA93rd
Big Horn CountyA94th
Fallon CountyA94th
Roosevelt CountyA94th
Powder River CountyA95th
Carter CountyNot ranked—