On February 2, 1948, Northeast Missouri Electric Power Cooperative (Northeast Power) was founded by three rural electric cooperatives in northeast Missouri. Originally, Northeast Power relied on purchased power from the US Bureau of Mines power plant in Louisiana, Missouri.
In 1961, Northeast Power joined with five other generation and transmission cooperative in Missouri to form Associated Electric Cooperative Inc. (Associated). The goal was to place existing and future generation under one operating unit. Associated is now one of the nation's largest wholesale power suppliers and maintains rates that are among the lowest in the United States.