In total, Les Alizés will transport and install 106 wind turbine monopile foundations and one offshore substation foundation, including associated topside for the offshore wind farms Gode Wind 3 (253 MW) and Borkum Riffgrund 3 (913 MW) in the German North Sea, developed by the Danish leader in offshore renewables Ørsted.
Both wind farms will use 11-MW Siemens Gamesa turbines. The Borkum Riffgrund 3 will be located adjacent to Ørsted's existing offshore wind farms Borkum Riffgrund 1 and Borkum Riffgrund 2. Gode Wind 3 will be close to Ørsted's Gode Wind 1 and 2.
Ørsted uses monopiles without a transition piece. Jan De Nul installs scour protection at all 107 locations before the installation of the foundations.
Once completed, these wind farms will generate enough electricity to power approx. 1.2 million German households every year.
Jörg Kubitza, Managing Director for Ørsted in Germany: "With the installation of the foundations for our two new projects this year, we are laying the ground work for additional, large-scale renewable energy at sea. And thus further establish offshore wind power as a pillar of the energy transition. I am pleased that we have now reached the next milestone. In addition to the required capacities that will have to be installed in the coming decades, our projects also exemplify how offshore wind power can be built out in a value-creating and competitive manner in Germany – if the right framework conditions are in place."
Peter De Pooter, Manager Offshore Renewables at Jan De Nul Group: “This contract is an important milestone for us, as it is the maiden project for our new Next-Gen heavy lift vessel Les Alizés. We are looking forward to install and complete both wind farms in close collaboration with our client Ørsted. Together with Voltaire’s first mission and other projects, we are proud to contribute to construct the global transition to renewable energy by installing these offshore wind turbine foundations in the most efficient and environmentally friendly way possible.”
We are proud to contribute to construct the global transition to renewable energy by installing these offshore wind turbines in the most efficient and environmentally friendly way possible.
Peter De Pooter
Manager Offshore Renewables at Jan De Nul Group
Les Alizés is the response to global trends within the offshore wind energy sector
Les Alizés is a Next-Gen offshore installation vessel. Thanks to her dimensions and impressive lifting and loading capacities, Les Alizés will be able to load out, transport and install multiple units of the largest and heaviest wind turbine foundations. In addition, as a crane vessel that floats, it will be able to install heavier and larger foundations into deeper waters and in more challenging seabed conditions.
The vessel is fitted with a highly advanced exhaust filtering system by means of a Selective Catalytic Reduction system and a Diesel Particulate Filter, making it the very first seagoing installation vessel of its kind to be an Ultra-Low Emission vessel (ULEv), moreover Stage V-certified.
This vessel investment is a response to the global trend within the offshore wind energy sector to design and install increasingly larger wind turbines.