The Monticello Nuclear Generating Plant is a nuclear power plant located in Monticello, Minnesota, along the Mississippi River. The site, which began operating in 1971, has a single nuclear reactor of the General Electric BWR-3 design generating 671 MWe. The reactor was originally licensed to operate until 2010, however on November 8, 2006, it was extended to operate until 2030. The plant is owned by Xcel Energy and operated by Northern States Power, its regional subsidiary.