Falls), Wright (rebuilt 1922 - downtown Fergus Falls), Taplin Gorge (1925 - northeast of Fergus Falls), and Bemidji (built early 1900s / purchased in 1944). Hoot Lake is unique in that the dam also forms the water intake for the coal-fired power plant nearby. Taplin Gorge's powerhouse is unique in that it was modeled after the Mausoleum of Theodoric at Ravenna, Italy. Coal-fired plants After the company's load exceeded the capacity of its dams, the company then switched to coal to meet its energy requirements. A number of plants were added to its system in the 1920s, starting with Hoot Lake in 1921. The most important one was built near Washburn, ND in 1926, as it was one of the earliest large-scale plants to burn lignite exclusively. The company then added several more plants across the system in the late 1940s to meet the huge surge in demand after WWII, but when the company's Big Stone plant was completed in 1974, all of these smaller plants were retired and removed (the Washburn plant had been removed in 1969). The company completed its Coyote plant in 1981, after which another of the company's earlier plants (at Ortonville, MN) was removed. The Hoot Lake plant was the last of the company's early plants and the last that was 100% owned by the company. The plant began as an extension of the Hoot Lake hydro plant, with six additions built between 1921 and 1964. At the time of its retirement and demolition in 2021 (as part of Minnesota's commitment to moving away from reliable baseload generation to "green" sources of energy), only the two most recent units (built in 1959 and 1964) were still in operation. The company is also seeking to withdraw from its investment in the Coyote plant in western North Dakota, again, as part of Minnesota's commitment to abandon reliable baseload generation in favor of "green" energy sources. Wind power Otter Tail Power Company currently owns 138 MW of wind generation, and purchases an additional 45 MW for a total of 183 MW of wind power. By 2010 wind generation on the system was expected to be equivalent to 18 percent of retail sales. Owned wind resources and power purchase agreements for Otter Tail Power Company include: Luverne Wind Farm, Ashtabula Wind Energy Center, Langdon Wind Energy Center, and North Dakota Wind II. See also List of United States electric