 The entire plant was officially named after Edward Dean Adams in 1927.The original Westinghouse generators remained in operation in the transformer house until the plant closed in 1961, having been replaced by the Robert Moses Niagara Power Plant and the Lewiston Pump-Generating Plant.The building was added to the National Register of Historic Places in 1975 and was designated a National Historic Landmark in 1983 and an IEEE Milestone in 1990.