Tokyo Electric Power Company Holdings Inc is a Japan-based company mainly engaged in businesses related to electric power. The Company operates through five segments. The Holdings segment provides management support, common services to each core operating company, and nuclear power generation and other businesses. The Fuel & Power segment sells electricity generated by thermal power plants, procures fuel, develops thermal power sources, and invests in fuel businesses. The Power Grid segment supplies electric power through transmission, substation, and distribution, and constructs and maintains transmission, distribution, and communication facilities. The Energy Partner segment proposes total solutions in line with customer requirements, provides services, and conducts power supply procurement business. The Renewable Power segment sells electricity generated from renewable energy sources, maintains and manages facilities, and develops and invests in new renewable energy power sources.