Toshiba Plant Systems & Services Corporation operates as an engineering constructor in Japan, Southeast Asia, other Asian countries, and internationally. It operates through two divisions, Power Systems, and Infrastructure and Industrial Systems. The Power Systems division engages in the planning, design, supervised construction, testing, trial operation, maintenance, inspection, and renovation for thermal, hydroelectric, and nuclear power plants. The Infrastructure and Industrial Systems division provides engineering, construction, test operations, adjustments, and field services for infrastructure facilities, and plant and equipment for general industry. This division provides services in a range of fields, including electrical plants and equipment, dispersed power source facilities, substations, transmission and distribution facilities, and other energy-related business, as well as production and related facilities. The company was founded in 1923 and is headquartered in Yokohama, Japan. Toshiba Plant Systems & Services Corporation operates as a subsidiary of Toshiba Corporation.