Big Stone is a coal-fired power plant located in Big Stone City, South Dakota, operating under the regulatory oversight of the Midwest Reliability Organization. With a steam turbine technology, the facility boasts an operating capacity of 475 megawatts. It is integrated into the Midcontinent Independent System Operator’s power control area, ensuring efficient management of electricity supply and demand. The plant is operated by Otter Tail Power Company and is majority-owned by Montana-Dakota Utilities Co, which is part of the MDU Resources Group. The regulatory status of the plant is classified as regulated, reflecting its compliance with industry standards and regulations.
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