Chief Maintenance & Operations Officer

Thanapong Chiemanukulkit

Mr. Thanapong Chiemanukulkit is seconded as Chief Operations & Maintenance Officer (COO&M) of Nexif Ratch Energy Investments Pte. Ltd. (NREI) and holds senior leadership roles within RATCH Group Public Company Limited (RATCH). He has led engineering, construction, and project delivery functions across the group’s power portfolio. With over 25 years of experience in the power sector, he brings a strong track record across thermal and renewable technologies in Thailand and internationally, and leads the operations and maintenance of NREI’s asset portfolio to ensure performance, reliability, and safety.

Since joining RATCH in 2013, Mr. Thanapong has held successive leadership roles spanning investment analysis, international investment, and large-scale power project management in Thailand and overseas, including serving as Chief Operating Officer of PT Medco Ratch Power Riau in Indonesia. He was also previously seconded as Managing Director of Hin Kong Power Holding Company Limited (HKH), Thailand’s first private LNG shipper. Earlier in his career, he spent over a decade at the Electricity Generating Authority of Thailand (EGAT) in power plant engineering and O&M roles. Mr. Thanapong holds a Master of Science in Electrical Power Engineering from RWTH Aachen University, Germany, and a Bachelor of Engineering in Electrical Engineering from the Sirindhorn International Institute of Technology (SIIT), Thammasat University, Thailand.