Electric Power Development Co., Ltd. operates as electric utility company in Japan. It develops and operates 61 hydroelectric power plants with total owned capacity of 8,577 MW; wind power with total owned capacity of 477 MW; geothermal power with total owned capacity of 38 MW; thermal power with total owned capacity of 8,810 MW; solar; biomass; and nuclear business. The company also offers welfare facility management; building maintenance services; administrative and labor services; computer software development, etc. In addition, it engages in the construction, engineering, design, consulting, and maintenance inspections of hydropower stations; transmission lines and substations; real estate indemnity; land survey; civil engineering work; general architecture; project management, etc. Further, the company offers unloading and transportation of coal for thermal power stations; sales of fly ash; marine transportation of coal for power generation; research and planning for environmental conservation; construction and maintenance of electronic and telecommunication facilities, etc. Additionally, it offers construction consulting services; design and supervision of power generation facilities and general architecture; geological and other surveys; development of facilities for removal of air and water pollutants; production and sales of fertilizers originated coal ash, etc. The company was incorporated in 1952 and is headquartered in Tokyo, Japan.