Tokyo Electric Power Company, Inc. (東京電力株式会社 Tōkyō Denryoku Kabushiki-gaisha, TYO: 9501), also known as Toden (東電 Tōden) or TEPCO, is a Japanese electric utility servicing Japan's Kantō region, Yamanashi Prefecture, and the eastern portion of Shizuoka Prefecture. This area includes Tokyo. Its headquarters are located in Uchisaiwaicho, Chiyoda, Tokyo, and international branch offices exist in Washington, D.C., and London. It is a founding member of strategic consortiums related to energy innovation and research; such as JINED, INCJ and MAI.