Tokyo Energy & Systems Inc. engages in the planning, study, design, construction, and supervision of electric and mechanical facilities in Japan. It primarily constructs thermal and nuclear power, hydro-electric power, chemical, and industrial plants, as well as substations, environmental facilities, and building and housing projects. The company also provides design and construction services for civil and architectural, and telecommunication system and electronic facilities; market research services, such as information related services to merchandise sales; and maintenance, inspection, repair, modification, demolition, and transportation services for various plants and facilities. In addition, it is involved in electricity supply and worker dispatching businesses; and the sale/purchase, lease, and management of real estate. The company was formerly known as Tokyo Denki Komusho Co., Ltd. and changed its name to Tokyo Energy & Systems Inc. in April 2001. Tokyo Energy & Systems Inc. was founded in 1947 and is headquartered in Tokyo, Japan.