Largest hydropower plants by capacity in the U.S. 2022
Grand Coulee in Washington is by far the largest conventional hydroelectric facility in the United States. As of July 2022 it had a nameplate capacity of some 6.5 gigawatts. Ranking second, Robert Moses Niagara's capacity was less than half of Grand Coulee's capacity, at roughly 2.4 gigawatts. Overall, five of the largest ten conventional hydroelectric facilities were located in Washington state. Washington is also the largest U.S. consumer of hydroelectric power.
