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• Department of Social Services Energy Assistance
• Weatherization Programs
• Utility Company Programs
  • MidAmerican budget billing program
  • MDU balanced billing program
  • NorthWestern Energy budget payment program

• Natural Gas Dockets
• Gas and Electric Dockets

Informational Electric and Natural Gas Filings

Natural Gas Tariffs

Utilities Serving South Dakota Towns

Investor Owned Natural Gas Utilities
MidAmerican Energy Co.
PO Box 657
Des Moines, IA 50306-0657
Toll-Free: 1-888-427-5632
Email: OnlineCustomerService@midamerican.com

Montana-Dakota Utilities Company
400 N. Fourth St.
Bismarck, ND 58501
(701) 222-7900

NorthWestern Energy
3010 W. 69th St.
Sioux Falls, SD 57108
Toll-Free: 1-800-245-6977

Municipal Natural Gas Utilities
Crooks Municipal Gas
PO Box 785
Crooks, SD 57020-0744
(605) 543-5238

Garretson Natural Gas Utilities
PO Box 370
Garretson, SD 57030-0370
(605) 594-6721

Humboldt Municipal Gas
PO Box 72
Humboldt, SD 57035-0072
(605) 363-3016

(Watertown) Municipal Utilities Department
901 Fourth Ave. SW
Watertown, SD 57201-4107
(605) 882-6233

Intrastate Pipeline
South Dakota Intrastate Pipeline Co.
1415 N. Airport Road
Pierre, SD 57501
(605) 224-0949