Tokyo Electric Power Company headquarters

The Tokyo Electric Power Company, Incorporated also known as TEPCO, is an electric utility servicing Japan's Kantō region, Yamanashi Prefecture, and the eastern portion of Shizuoka Prefecture. This area includes Tokyo.

In 2011, in the immediate wake of the 2011 Sendai earthquake and tsunami, the Japanese government declared an “atomic power emergency” and evacuated thousands of residents living close to TEPCO's Fukushima I plant.

http://en.wikipedia.org/wiki/Fukushima_I_nuclear_accidents