Tokyo Electric Power Co. Holdings, Inc. engages in the generation and distribution of electric power. It operates through the following segments: Fuel, Power Grid, Customer Support, Corporate, and Others. The Fuel segment deals with thermal power generation. The Power Grid segment deals with power generation and supply, hydroelectric power generation, power transmission and distribution facility and communication facility construction and maintenance. The Customer Support segment deals with customer service. The Corporate segment deals with business support and nuclear power generation. The Others segment includes information and telecommunications, energy and environment, living environment and life style related, and overseas businesses. The company was founded on May 1, 1951 and is headquartered in Tokyo, Japan.