Jan De Nul Group has begun the transport and installation work on Ørsted’s 242MW Gode Wind 3 and 900MW Borkum Riffgrund 3 offshore wind farms in Germany.
Jan De Nul’s scope includes the transport and installation of 106 wind turbine monopile foundations and one offshore substation foundation, including associated topside.
Subcontractor Wagenborg has deployed its Wagenborg Barge 8 for the transport of the monopiles foundations from Steelwind’s yard in Germany to marshalling harbour Eemshaven in The Netherlands.
Work will begin to install the first foundation in summer with Jan De Nul deploying its brand new heavy-lift vessel Les Alizés.
Delivered by CMHI Shipyard in China in January, the floating Les Alizés is capable of lifting and installing the largest and heaviest wind turbine foundations, even in deep waters. As well as constructing offshore wind farms, the vessel is suitable for decommissioning oil and gas platforms.
Les Alizés is fitted with an advanced exhaust filtering system comprising a selective catalytic reduction system and diesel particulate filter, making it reportedly the first seagoing installation vessel of its kind to be an ultra-low emission vessel, moreover Stage V-certified.
Powering 1.2 million German households
Located in the German North sea, both wind farms will use 11-MW Siemens Gamesa. For the first time, Ørsted will be using monopiles with secondary steel components instead of a transition piece for connecting turbine and foundation.
Completion is expected in 2024 and, once both are in full operation in 2025, the wind farms will generate enough green electricity to power around 1.2 million German households per year.