Energy transition

CO2 free hydrogen technology Duiker at Plant One

5 February 2026
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Duiker Clean Technologies has chosen Plant One in the port of Rotterdam as the location for its new AMMONEX pilot plant, which will make green hydrogen available locally.

Three people sit at a table signing documents during a formal event at Duiker Clean Technologies, with company banners and glasses of champagne in the background.
From left to right: Tyler Tschin (Plant One), Mark van Welsen (Duiker), Pascal Spiekerman (Plant One

Importing green hydrogen from other parts of the world requires hydrogen carriers that enable long-distance transport of green hydrogen, such as the hydrogen carrier ammonia. Duiker has been working since 2022 on the development of new process technology for the efficient conversion from ammonia to hydrogen. The company took the investment decision for the pilot in early 2025, paving the way for realization. The test results are expected in 2027

Mark van Welsen, Managing Director of Duiker Clean Technologies: “The pilot enables us to validate our technology in practice and make a concrete contribution to sustainable hydrogen value chains.” Pascal Spiekerman, COO of Plant One, adds: ‘With AMMONEX, we strengthen our role as a testing ground for innovative and sustainable process technologies and support the acceleration of the energy transition in the Rotterdam port area.

According to Mark Stoelinga, Director of Energy at the Port of Rotterdam Authority, the project demonstrates how innovation and energy imports come together: ‘Projects like AMMONEX are essential for building new sustainable energy value chains, such as the import of green hydrogen. They strengthen the port’s international position and provide an important boost to future energy security, the economy, and employment.