Westar Energy is an electric utility company which generates, transmits, and distributes electricity. It produces electricity through various fuel types, including coal, uranium, natural gas, and diesel. The company also owns transmission lines, overhead distribution lines, and underground distribution lines. It retails electricity to residential, commercial, and industrial customers, as well as for lighting public streets and highways, and is involved in electricity wholesale to electric cooperatives, municipalities, other electric utilities, and regional transmission organizations. Westar Energy merged with Great Plains Energy to form Evergy.