Arkansas's only nuclear power plant is located near Russelville. It has two reactor units, opened in 1974 and 1978, generating a total of 1,800 megawatts. Unit Two uses the tall cylindrical cooling structure, and Unit 1 discharges its cooling water into the adjacent Lake Dardanelle. The plant's construction contractor was Bechtel, and it is operated by Entergy Nuclear, which operates nine other nuclear plants in the USA, including Indian Point in New York, and Vermont Yankee. There are around 100 nuclear power plants in the USA.