The Navajo Generating Station has an output capacity of 2250 megawatts, even larger than the Intermountain Plant. It was built starting in 1970, on the Navajo Reservation, near Page, Arizona, and is operated by the Salt River Project, a utility providing electricity and water to the cities of Arizona. The DWP has a 21% share in the plant. The coal comes via a dedicated railway connecting the plant to the Kayenta mines on Black Mesa, 78 miles to the south.