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Tennet Commissions The DolWin6 Offshore Grid Connection in The North Sea

Bayreuth, Germany - The expansion of offshore wind energy in Germany requires the construction of offshore grid connections.

With DolWin6, the transmission system operator Tennet is putting Tennet's 13th German offshore grid connection into operation. With this, Tennet increases the connection capacity for offshore wind power plants to more than 8 GW (8,000 MW).

After several weeks of successful trial operation by Siemens Energy, the offshore grid connection was officially handed over to Tennet for regular operation. This brings the transmission capacity in the German North Sea to 8,032 MW.

Tim Meyerjürgens, COO of Tennet: "Wind energy generated far out at sea is the essential building block for the energy supply of the future. The North Sea countries Germany, the Netherlands, Denmark and Belgium set ambitious targets in Esbjerg last year and agreed on an offshore expansion to 65 GW by 2030. With 40 GW, Tennet alone will transport almost two thirds of this energy onshore. And the good news is: we are making great strides! With 11.5 gigawatts, we are already more than a quarter of the way there."

DolWin6 is a direct current link with a transmission capacity of 900 MW. On the associated offshore platform, the three-phase current generated by the wind farms at sea (Gode Wind 3, N-3.8 and N-3.7) is converted into direct current and transported to the mainland with a submarine cable around 45 kilometres long.

At the end of 2022, offshore wind turbines with a capacity of 8,100 MW (8.1 GW) were in operation in Germany. The German government plans to increase offshore wind power capacity to 30,000 MW (30 GW) by 2030.

Source: IWR Online, 26 Sep 2023