Operate compressors, pumps, pulverizers, boilers, turbine generators, switchyard equipment and additional auxiliary equipment to produce electricity, potable water, smelting steam, and high temperature water for consumption in the smelting plant. A Power Plant Operator controls the generation of electricity of electrical power by operating and maintaining fuel systems such as ash, demineralizer and others, to ensure the smelter operation is continuously receiving the necessary electrical power to produce aluminum.