Duiker Clean Technologies has selected Plant One in the Port of Rotterdam as the location for its AMMONEX pilot plant, a project aimed at making green hydrogen available locally through the conversion of ammonia.
The pilot plant will demonstrate Duiker’s proprietary process technology, developed since 2022, which enables the efficient conversion of ammonia into hydrogen. As green hydrogen is often imported from other regions using hydrogen carriers such as ammonia, the AMMONEX technology plays a key role in unlocking large-scale, long-distance hydrogen transport and local utilisation.
Duiker took the investment decision for the pilot project in early 2025, clearing the path for its realisation at Plant One. Testing and validation of the technology are expected to deliver results in 2027.
Mark van Welsen, Managing Director of Duiker Clean Technologies, said the pilot represents a crucial step forward: “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, highlighted the strategic importance of the project for the region: “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.”
The initiative has also been welcomed by the Port of Rotterdam Authority. According to Mark Stoelinga, Director of Energy, projects such as AMMONEX demonstrate how innovation and energy imports can converge to build new, sustainable energy value chains. He noted that such developments strengthen the port’s international position while supporting future energy security, economic growth, and employment.



