Electric Power Development Co., Ltd. engages in the wholesale supply of hydroelectric and thermal power in Japan. It also produces wood fuel, carbonized sewage sludge fuel, and other biomass fuels, as well as generates and transmits electricity. In addition, the company invests in, imports, transports, and sells coal; sells fly ash; procures forest offcut; produces and sells fertilizers using ash; manufactures, sells, and markets activated coke; operates welfare facilities, wood pellet manufacturing facilities, and nuclear power plants; operates and maintains telecommunication facilities and waste-fueled power generation plants; and constructs and maintains electronic and communication facilities. Further, it engages in the ocean transportation of coal for thermal power plants; research, planning, analysis of environmental conservation; surveying of and compensation for construction sites; the provision of investment management, and research and development of projects; facility maintenance and business process outsourcing services; development of computer software; and ocean transportation of ash and fly ash. Additionally, the company provides civil engineering, and construction management and services; and engineering services for atmospheric and water pollutant removal equipment. It has 60 hydroelectric power plants with a total capacity of 8,560 MW; 12 thermal power generation facilities with a total capacity of 9,117 MW; 23 wind power facilities with a total capacity of 540 MW; 1 geo-thermal facilities with a total capacity of 23 MW; and 2,404.8 kilometers of power transmission lines, and 9 substations and converter stations, as well as operates 33 power generation facilities with a total capacity of 6,544 MW located in Thailand, the United States, China, and internationally. The company was incorporated in 1952 and is headquartered in Tokyo, Japan.