Toshiba Plant Systems & Services Corp. engages in the provision of engineering, construction, trial operation, and maintenance services for thermal power, hydropower, and nuclear power generation facilities. It operates through the Power Systems & Infrastructure and Industrial Systems segments. The Power Systems segment deals with the planning, design, construction, operation, and maintenance of thermal, hydroelectric, and nuclear power generation facilities. The Infrastructure and Industrial Systems segment performs engineering, construction, test operations, and field services for public facilities and general industry buildings, and power conversion equipment. The company was founded in October 1923 and is headquartered in Yokohama, Japan.