Tokyo Electric Power Company

, also known as or TEPCO, is a Japanese company that sells electrical power in Japan's Kantō region, Yamanashi Prefecture, and the eastern part of Shizuoka Prefecture. This area includes Tokyo. Its headquarters are in Uchisaiwaicho, Chiyoda, Tokyo. It has international offices in Washington, D.C., and London.
After the March 2011 Tōhoku earthquake and tsunami, its power plant at Fukushima Daiichi became a continuing nuclear disaster. The Fukushima disaster forced 50,000 households to leave the evacuation zone because of radiation leaks into the air, soil and sea.
Tokyo Prefecture is the largest shareholder in the company with 9.37 percent voting rights.