Tokyo Energy & Systems, Inc. engages in the design and construction of thermal, nuclear, hydroelectric, chemical, and industrial power plants. It operates through the Facilities Construction and Other Businesses segments. The Facility Construction segment deals with the construction and maintenance of thermal, nuclear, hydroelectric, and solar power generation equipment. It also designs electrical, information and communication, and air conditioning equipment. The Other Businesses segment includes real estate, leasing and rental, insurance, and wholesale businesses. The company was founded on August 14, 1947 and is headquartered in Tokyo, Japan.