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NWE Contact Bar, in Montana dial 1-888-467-2669, in South Dakota or Nebraska dial 1-800-245-6977


NorthWestern Energy provides electric and/or natural gas services to 349 cities in the western two-thirds of Montana, eastern South Dakota and central Nebraska. We have offices in the following locations:

Corporate Office NorthWestern Energy
3010 West 69th Street
Sioux Falls, SD 57108


Billings Division Office
1944 Monad Road
Billings, MT 59102
Great Falls Division Office
1501 N River Road
Black Eagle, MT 59414
Bozeman Division Office
121 East Griffin Drive
Bozeman, MT 59771-0490
Helena Division Office
1315 North Last Chance Gulch
Helena, MT 59604
Butte - General Office
11 E. Park St.
Butte, MT 59701-1711
Kalispell District Office
890 N. Meridian Rd
Kalispell, MT 59904-2888
Butte Division Office
400 Oxford Street
Butte, MT 59701
Missoula Division Office
1801 S. Russell St
Missoula, MT 59806

   South Dakota

Aberdeen Office
113 S Centennial Street
Aberdeen, SD 57401
Brookings Office
1232 22nd Avenue South
Brookings, SD 57006
Chamberlain Office
115 N Main
Chamberlain, SD 57325
Huron Operations Center
600 Market Street W
Huron, SD 57350
Kimball Office
121 S Main
Kimball, SD 57355
Mitchell Office
300 S Burr St
Mitchell, SD 57301
Wagner Office
108 N Main
Wagner, SD 57380
Yankton Office
3210 Douglas Ave.
Yankton, SD 57078


Grand Island Office
612 S Webb Road
Grand Island, NE 68803
Kearney Office
1023 E 25th St
Kearney, NE 68847
North Platte Office
215 E Fifth
North Platte, NE 69101
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