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Windtech International July August 2024 issue






The offshore wind power plant Sandbank, located 90 kilometres west of the island of Sylt (Germany), is now fully installed. On 21. January the installation vessel MPI Adventure together with Siemens installed the last of a total of 72 wind turbines of the type Siemens SWT-4.0 130 (4MW). The first Sandbank wind turbine was installed end of July 2016.

Currently 65 of all 72 wind turbines deliver electricity from wind into the German electricity grid already. The remaining wind turbines will be commissioned and successively connected to the grid. The investment costs for the 288MW Sandbank offshore wind farm are around € 1.2 billion. Vattenfall holds a 51% stake in Sandbank Offshore GmbH while Stadwerke München (SWM) holds a 49% stake. When the wind farm is in full operation, an offshore substation will collect the wind energy of all 72 turbines, transform it from an AC voltage of 33 kilovolts (kV) to 155 kV, and deliver it to a converter station, from where the energy will be transported as DC over a distance of 165 kilometres to the landing point in Büsum, Schleswig-Holstein, Germany.

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