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Information by state

Complaint procedures

We have qualified personnel available during regular business hours at 800-257-4044 or 218-739-8877 to receive and, whenever possible, resolve customer inquiries, requests, and complaints. If we’re unable to promptly resolve a complaint, we’ll contact you within 5 business days and at least once every 14 calendar days thereafter:

  • To share the status of your investigation until the complaint is mutually resolved.
  • To share the results of your investigation and final disposition of the matter.
  • Until you file a written complaint with your state’s regulatory commission or the courts.

Minnesota Public Utilities Commission
121 7th Place East, Suite 350
St. Paul, MN 55101-2147

We're regulated by the Minnesota Public Utilities Commission, the North Dakota Public Service Commission, and the South Dakota Public Utilities Commission.

Complaint procedures

We have qualified personnel available during regular business hours at 800-257-4044 or 218-739-8877 to receive and, whenever possible, resolve customer inquiries, requests, and complaints. If we’re unable to promptly resolve a complaint, we’ll contact you within 5 business days and at least once every 14 calendar days thereafter:

  • To share the status of your investigation until the complaint is mutually resolved.
  • To share the results of your investigation and final disposition of the matter.
  • Until you file a written complaint with your state’s regulatory commission or the courts.

North Dakota Public Service Commission
600 E. Boulevard, Dept. 408
Bismarck, ND 58505-0480

We're regulated by the Minnesota Public Utilities Commission, the North Dakota Public Service Commission, and the South Dakota Public Utilities Commission.

Complaint procedures

We have qualified personnel available during regular business hours at 800-257-4044 or 218-739-8877 to receive and, whenever possible, resolve customer inquiries, requests, and complaints. If we’re unable to promptly resolve a complaint, we’ll contact you within 5 business days and at least once every 14 calendar days thereafter:

  • To share the status of your investigation until the complaint is mutually resolved.
  • To share the results of your investigation and final disposition of the matter.
  • Until you file a written complaint with your state’s regulatory commission or the courts.

South Dakota Public Utilities Commission
Capitol Building, 1st floor
500 E. Capitol Ave.
Pierre, SD 57501-5070

We're regulated by the Minnesota Public Utilities Commission, the North Dakota Public Service Commission, and the South Dakota Public Utilities Commission.