Electricity supply in Japan is carried out by privately-owned independent regional electric power companies and close cooperation among these companies is essential for efficient operations. In 1952, the nine electric power companies established the Federation of Electric Power Companies (FEPC) to promote smooth operations within the industry. Since then, FEPC has played an important role as a base for close communication between the electric power companies and as a forum for exchanging views to create the electric power industry of the future. Moreover, FEPC undertakes various activities to ensure stable operations of the electric power industry, with awareness of its role in the energy industry of Japan. With the return of Okinawa to Japan in 1972, the Okinawa Electric Power Company rejoined Japan’s electric power industry, becoming an FEPC member in March 2000.