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Northwestern Energy Power Outages — Live Map

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Northwestern Energy Power Outage Summary

As of September 18, 2026 at 12:01 AM ET, Northwestern Energy reports 29 of 507,774 tracked electric customers (<0.01%) without power, across 3 states.

Customers Out
29
Customers Served
507,774
Share Without Power
<0.01%
States Served
3

Most Affected Counties served by Northwestern Energy

Customers Out %Customers Out
  1. 1Yellowstone County16,263 Served0.15%25
  2. 2Lewis and Clark County74,216 Served<0.01%4

States Served by Northwestern Energy

Montana441,311 Served29<0.01%South Dakota65,359 Served00.00%Wyoming1,104 Served00.00%

All Counties served by Northwestern Energy

Aurora County712 Served00.00%Beadle County11,831 Served00.00%Beaverhead County5,309 Served00.00%Big Horn County3,833 Served00.00%Blaine County5,754 Served00.00%Bon Homme County2,408 Served00.00%Broadwater County5,547 Served00.00%Brown County9,368 Served00.00%Brule County2,828 Served00.00%Carbon County12,590 Served00.00%Cascade County33,835 Served00.00%Charles Mix County5,126 Served00.00%Chouteau County5,719 Served00.00%Clark County2,161 Served00.00%Codington County1,609 Served00.00%Davison County8,667 Served00.00%Day County2,569 Served00.00%Deer Lodge County9,374 Served00.00%Deuel County9 Served00.00%Douglas County1,514 Served00.00%Edmunds County17 Served00.00%Faulk County1,454 Served00.00%Fergus County9,712 Served00.00%Gallatin County43,827 Served00.00%Golden Valley County1,250 Served00.00%Granite County7,412 Served00.00%Hamlin County387 Served00.00%Hand County207 Served00.00%Hill County14,961 Served00.00%Hughes County563 Served00.00%Hutchinson County4,310 Served00.00%Hyde County960 Served00.00%Jefferson County8,007 Served00.00%Jerauld County318 Served00.00%Judith Basin County2,629 Served00.00%Kingsbury County49 Served00.00%Lewis and Clark County74,216 Served4<0.01%Liberty County2,100 Served00.00%Madison County24,183 Served00.00%Marshall County16 Served00.00%Meagher County6,309 Served00.00%Mineral County8,670 Served00.00%Missoula County40,148 Served00.00%Musselshell County4,162 Served00.00%Park County8,030 Served00.00%Park County186 Served00.00%Phillips County5,102 Served00.00%Pondera County6,605 Served00.00%Powell County3,865 Served00.00%Ravalli County17,739 Served00.00%Rosebud County2,767 Served00.00%Sanborn County1,020 Served00.00%Sanders County8,614 Served00.00%Silver Bow County11,670 Served00.00%Spink County2,433 Served00.00%Stillwater County4,810 Served00.00%Sweet Grass County3,191 Served00.00%Teton County7,608 Served00.00%Teton County459 Served00.00%Turner County7 Served00.00%Valley County6,626 Served00.00%Wheatland County2,269 Served00.00%Yankton County4,816 Served00.00%Yellowstone County16,263 Served250.15%Carbon County459 ServedData Unavailable — last reading September 2, 2026 at 12:31 AM ETN/AGarfield County6,605 ServedData Unavailable — last reading September 2, 2026 at 12:30 AM ETN/A

Outage data is collected directly from utility providers and refreshed approximately every 10 minutes. Last updated: September 18, 2026 at 12:01 AM ET