The Electric Power Development Co., Ltd., known as J-POWER, is a leading entity in the energy generation and distribution industry, founded in 1952 and headquartered in Chuo, Japan. As the largest electric utility in Japan, J-POWER specializes in producing electricity primarily from coal and hydroelectric power stations, with additional investments in wind farms and the development of a nuclear plant in Ohma, Aomori prefecture. The company is also notable for being the sole operator of the transmission lines that interconnect the four main islands of Japan.