Ariz. Sulfur content of coal is 0.6 percent. A maximum of 25,000 tons per day if all units are running at full load. The first unit began producing electricity in 1974. Commercial operation of the other units began in 1975 and 1976.
Water reservoir is lined to help recover and contain process waste.
Serves electric customers in Arizona, Nevada and California. The station also supplies energy to pump water through the Central Arizona Project. All units under allowable limits for opacity.