Fuji Kosan Co., Ltd. engages in the purchase and sale of fuel oil, asphalt, lubricating oil, and green products. It operates through the following segments: Petroleum, Home Energy, Rental and Environment related. The Petroleum segment deals with the purchase and sale of petroleum products such as fuel oil, asphalt, and lubricating oil. The Home Energy segment provides fuel oil products for home-use. The Rental segment manages the rental of construction equipment. The Environment related segment sells electricity through megasolar. The company was founded on September 17, 1949 and is headquartered in Tokyo, Japan.