Mammoet played a crucial role in the construction of Shell’s Holland Hydrogen 1, Europe’s largest green hydrogen plant, located along the Dutch coast. With a 200MW electrolyser capacity, the facility will produce up to 60,000kg of hydrogen daily, powered by offshore wind from Hollandse Kust Noord.
From the early FEED phase, Mammoet provided constructability insights, helping Shell optimize its modular construction strategy. With challenging access and limited workspace, Mammoet’s detailed planning ensured smooth transport and installation of heavy components.

Key equipment, including transformers and air coolers, arrived via Rotterdam’s Euromax Terminal. Mammoet conducted quay strength studies to ensure safe offloading using a 750t mobile crane. Components were then moved to site or stored temporarily, with careful logistics coordination.
A focus on sustainability saw Mammoet deploy zero-emission equipment, including electric cranes and platform trailers, to comply with indoor emissions restrictions. Over 200 heavy items were installed, including ten electrolyser units composed of roughly 20 parts each.

In response to space constraints, Mammoet transported and installed a large off-site fabricated pipe rack in two modular sections. Throughout, Mammoet maintained close communication with Shell and other contractors to ensure the schedule stayed on track.
“This project is a major milestone for green energy and heavy industry,” said Project Manager Marco Barendregt. “Our early involvement and integrated approach were key to its success.”

Holland Hydrogen 1 marks a major step toward sustainable fuel solutions, with Mammoet’s expertise ensuring its successful delivery—safely, efficiently, and emission-free.