DEME locks €150m turbine deal for Dutch wind giant—what’s next?
Belgian contractor DEME will install 69 turbines at the 1GW Zeevonk project, expanding its role in the Dutch North Sea.
The Belgian marine contractor DEME has expanded its role in the 1GW Zeevonk offshore wind project in the Netherlands after securing a second major contract. This latest agreement tasks the company with transporting and installing 69 wind turbines for the project’s initial phase, developed by Vattenfall and Copenhagen Infrastructure Partners (CIP) through its Energy Investment Fund I. The contract is valued between €50 million and €150 million ($56 million to $168 million).
DEME will deploy its next-generation jackup vessel, Norse Energi, for the turbine installation campaign. Mobilization is scheduled to begin in 2028, with offshore operations starting shortly afterward. The project is expected to be completed by 2029, aligning with the first phase’s goal of delivering power to the Dutch grid.
The Zeevonk wind farm is located 63 to 84 kilometers off the coast of Bergen aan Zee in the Dutch North Sea. The project remains contingent on a final investment decision, though its timeline is already set for the coming years.
DEME’s expanded scope
This new contract builds on DEME’s earlier foundation installation agreement, awarded in July 2026. That contract, valued between €150 million and €300 million, covers the transport and installation of 69 monopile foundations, as well as secondary steel work and scour protection. For this phase, DEME will use multiple vessels, including the floating installation vessel Orion for monopile installation, a jackup for secondary steel, and a fallpipe vessel for scour protection.
Martin Degen, Business Unit Director WTG and O&M at DEME, emphasized the significance of the company’s expanded role: “Following the foundation installation award earlier this summer, this contract further expands DEME’s role in the delivery of the Zeevonk wind farm. It also demonstrates how our next-generation vessels support customers in delivering offshore wind projects safely and efficiently.”
Future phases and industry impact
The first phase of Zeevonk is set to supply power to the Dutch grid by 2029. A second phase, planned for 2032, will add another 1GW of capacity, along with 500MW of system-integration infrastructure, including a green hydrogen electrolyser at the Port of Rotterdam.
DEME’s involvement in both foundation and turbine installation underscores its capacity to manage complex, large-scale offshore wind projects. As the industry continues to grow, such integrated contracts highlight the demand for specialized marine contractors capable of delivering end-to-end solutions.
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