Siemens to provide eight wind turbines for Klixbüll community wind farm in Schleswig-Holstein

Siemens Energy has been awarded an order for the community wind power plant Klixbüll in Schleswig-Holstein.

Eight modern wind turbines with direct drive technology and a 3 megawatts (MW) capacity each will be installed at the onshore wind energy project close to the coast of the North Sea near the Danish border.

The fully citizen-owned Zweite Klixbüller Energie GmbH & Co. KG with the new wind farm extends the locally installed capacity by 24 MW up to 39 MW till autumn.

Even in case of no wind an innovative feature to stabilize the grid by supplying wattless power assures additional profit to the project. Moreover, Siemens provides a 20-year-maintenance in the framework of a full service contract.

Six SWT-3.6-107 turbines have been in operation at the windy site in the region of Nordfriesland. Two of them are the basis of the first community wind farm of Klixbüll commissioned in 2006. Another eight SWT-3.0-113 wind turbines with a rotor diameter of 113 meters and a capacity of 3 MW will not only more than double the total capacity, but also provide technological features that will make the project even more profitable. Once the installation will be completed this fall, the wind farm will contribute to the energy transition even in the case of complete wind calm. A key feature is the “Reactive Power at No Wind” option which turns the wind turbines into a phase shifting VAR compensator which then solve a technical problem in the AC voltage grid: Industrial customers who draw large amounts of active power from the grid can disrupt the supply frequency because of their need for reactive power and may lead to a heating of the power lines. Through “Reactive Power at No Wind”, the wind farm can counteract this frequency shift and hence stabilize the AC grid. The operator of a wind farm produces in that way reactive power itself and offers it to the grid operator. This can heavily reduce the annual operating costs.

Noise emissions must also be taken into account when planning for the Klixbüll site as the Siemens SWT-3.0-113 poses great opportunities in this regard. When the wind turbines operate in the noise control mode at night, they still have a power output far more than 2 MW while the sound level can be reduced by up to -6 dB(A). Werner Schweizer, both mayor of Klixbüll and managing director of the Klixbüller Energie Verwaltungs GmbH, is convinced of the Siemens wind turbines and the opportunities they entail: “I am glad that we have found an optimal solution for our project”. Ernst-Wilhelm Petersen, the projects director, underlines: “Our solution not only accommodates the citizens’ interests but also takes business objectives into account.”

Wind power and energy service are part of Siemens’ Environmental Portfolio. Around 43 percent of its total revenue stems from green products and solutions. That makes Siemens one of the world’s leading providers of eco-friendly technology.

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