NorthWestern Energy Service Area

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

Montana

  • Billings Division Office
    1944 Monad Road
    Billings, MT 59102

  • Bozeman Division Office
    121 East Griffin Drive
    Bozeman, MT 59771-0490

  • Butte - General Office    
    11 E. Park St.
    Butte, MT  59701-1711

  • Great Falls Division Office 
    1501 N River Road
    Black Eagle, MT 59414
  • Butte Division Office
    400 Oxford Street
    Butte, MT 59701

  • Helena Division Office
    1315 North Last Chance Gulch
    Helena, MT 59604
  • Havre District Office
    164 21st Avenue West
    Havre, MT 59501

  • Missoula Division Office
    1801 S. Russell St.
    Missoula, MT 59806
  • Kalispell District Office
    890 N. Meridian Rd.
    Kalispell, MT 59904-2888

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

  • Madison Office
    104 N Egan Avenue
    Madison, SD  57042

  • Mitchell Office
    514 N Main
    Mitchell, SD  57301

  • Redfield Office
    515 N Main
    Redfield, SD  57469

  • Scotland Office
    504 Main
    Scotland, SD  57059

  • Wagner Office
    108 N Main
    Wagner, SD  57380

  • Webster Office
    201 W 5th Avenue
    Webster, SD  57274

  • Yankton Office
    313 Cedar
    Yankton, SD  57078

Nebraska

  • Grand Island Office
    515 W Third
    Grand Island, NE  68801

  • Kearney Office
    1023 E 25th St
    Kearney, NE  68847

  • North Platte Office
    215 E Fifth
    North Platte, NE  69101

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