Contact Us
Fergus Falls office:
PO Box 496
215 S Cascade Street
Fergus Falls, MN 56538-0496

Fargo office:
PO Box 9156
4334 18th Avenue SW
Fargo, ND 58106-9156

Corporate (toll-free) 866-410-8780
Investor Services (toll-free) 800-664-1259 or 218-739-8479
Fax 218-998-3165

Electronic Mail:
Investor Information/Requests:
Acquisition Information: (Please review our Terms of Use)
Human Resources:
General Information:

If you are a customer of Otter Tail Power Company with a question: Contact Customer Service Center