The Oconee Nuclear Station is a nuclear power station located on Lake Keowee near Seneca, South Carolina, and has an energy output capacity of over 2,500 megawatts. It is the second nuclear power station in the United States to have its operating license extended for an additional twenty years by the Nuclear Regulatory Commission (NRC) (the application for the Calvert Cliffs Nuclear Power Plant in Maryland preceded it). This plant has three Babcock & Wilcox pressurized water reactors, and is operated by Duke Energy.