About Otter Tail Power Company

Getting to know us

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

Our company is named after the Otter Tail River, which provided our first source of electricity when we became an operating utility in 1909. Hundreds of years ago the Ojibwe noted that a large sandspit follows the contour of the shoreline of a lake where the river flows into it. Because they thought this sandspit resembled the tail of an otter, the Native Americans named the lake Nigagwanoe, Otter Tail. By doing so, they also named a river, a village, a township, a county, and a power company. 


We're a subsidiary of Otter Tail Corporation, which trades under the symbol OTTR on The NASDAQ Global Select Market, and headquartered in Fergus Falls, Minnesota.

Our customers

We serve 132,200 customers in 422 communities.

  • Minnesota: 61,800
  • North Dakota: 58,800
  • South Dakota: 11,600

Our employees

Other information

Generating capability
About 798 MW (owned)

Transmission lines
About 5,800 miles