Founded in Fergus Falls, Minnesota, Otter Tail Corporation operates as a diversified energy company with a core mission to deliver reliable electricity and energy services while maintaining a commitment to environmental, economic, and community stewardship. The company's primary business units include Otter Tail Power Company, which serves over a quarter million customers in Minnesota, North Dakota, and South Dakota, and interests in manufacturing and plastics businesses. Otter Tail aims to provide high-performing, low-cost utility services and disciplined manufacturing operations to create shareholder value.

Notable affiliated individuals include the executive leadership team and board members who guide the company's strategic direction. Otter Tail Corporation has achieved significant milestones in expanding its service areas and maintaining a balanced approach to growth and sustainability. The company's impact is evident in its ability to provide stable energy solutions while contributing positively to the communities it serves. Through its dual-platform model, Otter Tail continues to be a key player in the regional energy market and an important contributor to local economies.