Vattenfall and Copenhagen Infrastructure Partners (CIP) have awarded DEME a contract to transport and install 69 wind turbines at the first phase of the 2 GW Zeevonk offshore wind project in the Dutch North Sea.
The award expands DEME’s role in the project, following a contract earlier this year to transport and install foundations for the first Zeevonk phase.
For the wind turbine installation work, DEME will use Norse Energi, one of the company’s new vessels equipped with a 3,200-tonne crane and built to transport and install next-generation wind turbines and XXL monopiles in water depths of up to 70 metres.
The work is expected to begin after mobilisation activities start in 2028.
In addition to the foundation and turbine installation contracts awarded to DEME, the developers have secured several other major supply and installation agreements for the first phase. EEW Special Pipe Constructions (EEW SPC) will supply 69 monopile foundations using a transition-piece-less design. Dutch cable manufacturer TKF will supply inter-array cables that will be installed by Boskalis.
Zeevonk is being developed at the 2 GW IJmuiden Ver Beta offshore wind site, located approximately 63 to 84 kilometres off the Dutch coast, for which Vattenfall and CIP secured development rights in a Dutch tender in 2024.
In 2025, the developers split the 2 GW wind farm into two phases due to delays to the Delta Rhine Corridor, the planned infrastructure for transporting hydrogen to customers in the Netherlands, Belgium and Germany.
The first 1 GW is scheduled for 2029, while the second phase is planned for 2032 and will add another 1 GW of offshore wind capacity, with 500 MW of system integration capacity.
Zeevonk has a power purchase agreement (PPA) in place since 2024, when Google booked 250 MW of electricity from the project for 15 years.
The project remains subject to a final investment decision (FID).