Built in the shadow of the majestic Rocky Mountains, Fort St. Vrain (FSV) was Colorado's only Nuclear Power Plant and America's only commercial High Temperature Gas Cooled reactor design. Plans to construct FSV were announced in 1965. Work began at the site in 1968. Initial hot flow testing of the reactor began in 1972, and several years of design problem work followed. The first commercial electric power using the reactor was generated from the plant in December 1976.
