Heerema Marine Contractors has completed the installation of its first wind turbine generator (WTG) monopile foundation project at EnBW’s He Dreiht offshore wind farm. This is currently Germany’s largest offshore wind farm.
A major milestone was reached on 6 August, as Heerema‘s semi-submersible crane vessel (SSCV) Thialf had installed all 64 WTG monopile foundations. Each monopile measures approximately 70 metres in length and weighs 1350 tonnes, and each transition piece is 32 metres long and weighs 670 tonnes.
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Efficient installation cycles
The installation was finished well within the agreed timeframe, with all activities, including full grouting, completed within 24 hours per foundation location. These efficient installation cycles were made possible by the efficient operation of Thialf’s dual cranes, the significant noise reduction achieved using the innovative T-NMS-10000, and the feeder barge concept, which ensured a continuous supply of monopiles and transition pieces to the vessel.
When completed, the He Dreiht wind farm is expected to have a capacity of over 960 MW, providing renewable energy for approximately 1.1 million households. This project not only supports Germany’s energy transition, but also contributes to the European Union’s broader goals of increasing renewable energy capacity and reducing dependence on fossil fuels.
Picture by Heerema Marine Contractors.
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