First wind turbine for offshore wind farm Sandbank has been installed

Friday, 5 August, 2016 - 09:30
The first wind turbine at Sandbank has been installed. (Photo: Vattenfall)
The first wind turbine at Sandbank has been installed. (Photo: Vattenfall)

The first wind turbine at the offshore wind farm Sandbank 90 km west of Sylt has been installed. The wind farm is scheduled to go into operation in early 2017, and a new transfer vessel will shorten the expected construction time by up to three months.

The foundations for Sandbank's 72 wind turbines were completed in February 2016, and the offshore transformer substation was installed in April. In addition, the cabling within the wind farm is complete, and the manufacturing processes for the nacelles, hubs and rotor blades is in full swing.

The 72 Siemens SWT-4.0 130 turbines installed at the Sandbank wind farm will have a total output of 288 MW. The installation of the towers on the foundations as well as the installation of the nacelles and rotor blades will be carried out by the installation vessel MPI Adventure.

Special ship accelerates commissioning

The combined hotel and transfer vessel Acergy Viking will be used during commissioning of the wind turbines. The vessel has a special gangway system that allows commissioning teams to transfer directly to the wind turbines. By using this modified ship type, the project partners expect a time advantage of approximately three months compared to the original schedule.

The system compensates for ship movements caused by waves, making personnel transfers much safer, more efficient and even allowing them to be carried out in rough seas with waves up to 2.5 meters high. The new system can be used in 24-hour operation. It will be used in normal operation for the first time in the North Sea during the Sandbank project. The offshore wind farm Sandbank will go into operation in early 2017 and will produce approximately 1.4 TWh of electricity annually.

Offshore wind energy is part of Munich's expansion campaign

"We are delighted that we will be able to begin installing the wind turbines a little earlier than originally planned. Our colleagues in charge of the foundations, the cabling within the wind farm and the substation did excellent work, and this is now paying off. It also demonstrates that the cooperation between all project partners is working very well", said Hergen Stolle, the subproject leader for wind turbines at Vattenfall.

Christian Vogt, head of investment management at Stadtwerke München, said: "A further project in our expansion campaign for renewable energies, Sandbank, is now taking shape. By 2025, we intend to use it to generate as much green electricity as the entire city of Munich consumes." Sandbank will make a significant contribution toward advancing our goals. I am very pleased that the work has gone so well up till now, and I would like to thank everyone who is contributing to the success of this very complex project.

Vattenfall has a 51% stake in Sandbank Offshore Wind GmbH, which was established for the project. Stadtwerke München (SWM) holds 41%. It is the second joint offshore wind project for Vattenfall and SWM, and the investment volume amounts to approximately EUR 1.2 billion.

Vattenfall / Tanja Peschel

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