Toa Oil Co., Ltd. engages in the petroleum refining and electrical power generation businesses. It operates through the following divisions: Refining Business, Generation Business, Facilities. The Refining Business division provides refinery of gasoline, kerosene, light oils, and heavy oils. The Generation Business division engages in the supply of electricity and steam necessary for oil refinery through pipelines, boiler and gas turbines. The Facilities division provides oil-refining and power-generation equipment. It also supplies petroleum products to Kanto region. The company was founded on February 6, 1924 and is headquartered in Kawasaki, Japan.