About Otter Tail Power Company

Who we are

We are an investor-owned electric utility that provides electricity for residential, commercial, and industrial customers in Minnesota, North Dakota, and South Dakota.


We are a subsidiary of Otter Tail Corporation, which trades under the symbol OTTR on The NASDAQ Global Select Market.


215 South Cascade Street
Fergus Falls, MN 56537

Our customers

We serve 131,200 customers in 422 communities.

  • Minnesota: 61,100
  • North Dakota: 58,500
  • South Dakota: 11,600

Our employees

Other information

Generating capability
About 798 MW (owned)

Transmission lines
About 5,800 miles

Service area

Our service area spans 70,000 square miles in Minnesota, North Dakota, and South Dakota.

map pin Headquarters

map pin Hydroelectric Station

map pin Coal-fired Power Plant

map pin Customer Service Center

map pin Combustion Turbine

map pin Wind Farm

Stewardship Report

This biennial report provides an overview of our company and our environmental, social, and economic stewardship.

Stewardship Report releases