Engineering, maintenance, operation, construction, parts sales, repair of environment control equipment, and recycle business
IHI PACKAGED BOILER CO., LTD.
Sales and maintenance service of packaged boilers
IHI Plant Engineering Corporation
Engineering, procurement, and construction (EPC) of plants, and design, fabrication, and maintenance of instruments
IHI Plant construction Co., Ltd.
Engineering and construction of power plants and process plants
Kanamachi Purification Plant Energy Service Co., Ltd.
Power and steam supply to Tokyo Metropolitan Government Bureau of Waterworks
Kotobuki Iron Works Co., Ltd.
Manufacturing of boiler and diesel engines parts
Diesel United, Ltd.
Engineering, manufacturing and maintenance of diesel engines
Toyosu Energy Service Co., Ltd.
Supply business operaitons; electric power, steam, hot water, and air conditioning
NIIGATA POWER SYSTEMS CO., LTD.
Manufacture, sale, etc. of diesel engines for marine/power-generation/rail-traction use, gas engines, gas turbines, and "Z-peller" propulsion units
NICO Precision Co., Inc.
Manufacture and sale of parts for motors
Japan Jurong Engineering Co., Ltd.
Aomori Plant Co., Ltd.
Nuclear power facility remodeling, construction and maintenance work operations