Keppel Integrated Engineering (KIE) is the environmental technology and engineering arm of Keppel Corporation Limited, a leading mainboard listed company in Singapore.

KIE is one of the few companies in the industry that offers a complete range of water and thermal technologies for municipal and industrial clients through Design-Build-Own-Operate(DBOO), Build-Operate-Transfer(BOT), Public-Private-Partnership(PPP) and Engineering-Procurement-Construction(EPC) business models. KIE is also the only Singaporean company that owns technologies for both solid waste and water treatment.

Besides environmental engineering, KIE also offers an integrated range of expertise from facilities management, district heating and cooling to construction, fabrication and maintenance services for industrial structures and equipment.