Offshore wind innovations proven at Nissum Bredning Vind: Siemens Gamesa technology elements lower costs up to 30%

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The innovative 28 MW offshore wind power project located in the waters of North-western Denmark is fullyoperational, producing power for customers Nissum Bredning Vindmøllelaug and Jysk Energi since early 2018. Utilizing the first serial-manufactured SWT-7.0-154 direct drive offshore wind turbines, the project is a showcase of Siemens Gamesa’s commitment to innovation and reducing costs. The wind turbines and further technological advancements have fulfilled expectations and are now in preparation to become available for commercial deployment.

Nissum Bredning Vind is a small project capacity-wise, especially when compared to other offshore wind power projects. But it is extremely significant in terms of innovation. Siemens Gamesa has tested and validated several new technologies here, from a 66 kV transmission system to jacket foundations with concrete transition pieces to a cable-in-pipe installation. These innovations all share the common goal of reducing the Levelized Cost of Electricity (LCoE) from offshore wind

Cost reductions of up to 30% compared to traditional elements can be provided by some of the elements installed at Nissum Bredning Vind. The innovative cable-in-pipe installation, where standard onshore cables are installed in plastic pipes from the mainland as well as between the wind turbines, lowers capital expenditures compared to employing offshore cables. Gravity jacket foundations provide a soil interface at normal water depths which can be made more cost-efficient versus classic jacket foundations. Furthermore, the concrete transition piece can be made at a cost level of up to 30% lower than a steel transition piece. Also, the 66 kV transmission system reduces transmission losses, providing the customer with a higher energy output – and thus higher revenue – from each wind turbine.

Source: Siemens Gamesa