SAKAI Holdings CO.,LTD, together with its subsidiaries, engages in the renewable energy business in Japan. The company operates through six segments: Renewable Energy Business, Mobile Communications Equipment Sales Related Business, Insurance Agency Business, Funeral Business, Real Estate Rental and Management Business, and Business Solutions Business. It also operates, maintains, manages, and inspects power generation activities. The company operates various power plants. In addition, the company engages in solar power generation business to sell power to electric power companies. Further, it sells mobile communication equipment for mobile communication services to corporate enterprises; and sells medical insurance, as well as provides after-care services, such as memorial services for the anniversary of the death; and rentals for real estate properties, such as parking lots. The company was incorporated in 1991 and is headquartered in Nagoya, Japan.