Innovative clean energy solutions for future generations

Thomassen Energy serves customer needs with flexible, reliable, and efficient gas turbine solutions to improve lifecycle costs and reduce emissions.


About our company

Your Partner for Gas Turbine Parts, Upgrades and Services

We’re here to help you reduce carbon emissions with quality upgrades and aftermarket retrofits for your gas turbines.

Based in the picturesque town of Rheden, The Netherlands, Thomassen Energy is not your average energy company; we’re a global powerhouse in the energy industry! As part of the Hanwha Group based in South Korea, our mission is to provide innovative clean energy solutions for future generations. In collaboration with our affiliates, Hanwha Power Systems, PSM, and PSM Thomassen Gulf we bring you the most modern and eco-friendly energy solutions for power plants around the world. Our retrofit solutions to your existing equipment can allow you to reach net zero carbon goals.

We commit to supporting the generation of efficient, sustainable, and reliable energy while helping you save money on maintenance costs.
Whether you’re a power plant operator or need our solutions for other applications, contact us for the best aftermarket gas turbine services.


Clean Energy

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Rotor Services

New Frame 6B Gas Turbine Rotor 1


Retrofits & Upgrades

expert measuring equipment from Thomassen Energy



expert working on a 9E NDT from Thomassen Energy



close up of GTOP N19

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Thomassen and PSM Global Footprint

Map showing Thomassen Energy and PSM locations around the world

Global Leadership

Alex Hoffs
Alex Hoffs
President PSM
Chris Johnston
Chris Johnston
Vice President, Chief Operating Officer PSM
Jongsoo Lee
Jongsoo (Jason) Lee
Vice President – H2 Division 
Hanwha Power Systems
Peter Stuttaford
Peter Stuttaford
CEO Thomassen Energy
Khalid Oumejjoud
Khalid Oumejjoud
Managing Director PSM 
Thomassen Gulf
John Pare
John Paré
Vice President And General Counsel Hanwha Power Systems Global

Upcoming Events

Save the Date Asset Manager Conference
July 17-18, 2024

2024 Thomassen Energy Asset Managers Conference - Kuala Lumpur, Malaysia

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Supply Chain Summit
September 4-5, 2024

2024 Supply Chain Summit - Rheden, The Netherlands

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Thomassen Energy Asset Manager Conference in Ghana
June 3-4, 2024

2024 Thomassen Energy Asset Managers Conference - Accra, Ghana

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Thomassen Energy rotors and gas turbines

Providing Certified and Clean Energy Solutions

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Combustion and HGP sets delivered




years of history
Thomassen Energy B.V.