IHI Enviro Corporation Tokyo Japan Domestic Group Companies

IHI Enviro Corporation 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. Employee Outsourcing

Aomori Plant Co., Ltd. Nuclear power facility remodeling, construction and maintenance work operations