Idemitsu Kosan Co., Ltd. engages in oil, basic chemicals, and renewable energy businesses. The company is headquartered in Chiyoda-Ku, Tokyo-To and currently employs 13,814 full-time employees. The company went IPO on 2006-10-24. The firm operates five business segments. The Fuel Oil segment is engaged in the production, sales, import & export, and trading of refined petroleum products. The Basic Chemicals Segment is engaged in the production and sale of olefins and aromatics products. The High Functional Materials segment is engaged in lubricants, functional chemicals, electronic materials, functional pavement materials, and agribio products. The Power & Renewable Energy segment is engaged in power generation (includes thermal, solar, wind), power sales, and solar cell operations. The Resources segment is engaged in exploration, development, production, and sales of energy resources such as crude oil, natural gas, and coal. The firm also conducts insurance and intra-group service businesses.