The first commercial offshore wind farm that was put into operation in Germany was Baltic 1 in the Baltic Sea (May 2011). The wind farm is located approximately 15 kilometres north of the Fischland-Darß-Zingst peninsula. At the Bentwisch substation near Rostock, 50Hertz connected this wind farm to the onshore power grid by means of a 150 kV submarine cable connection.

In the meantime, 50Hertz has started additional projects because an entire series of offshore wind farms with a total capacity of more than 3,500 megawatts are planned off the German Baltic Sea coast. This corresponds to about three and a half large conventional power plants.

For example, 50Hertz already connected the neighbouring Baltic 2 wind farm in 2015. Meanwhile, works are progressing well for the connection of the Ostwind 1 wind farm areal (with the offshore wind farms Wikinger and Arkona-Becken Südost https://www.50hertz.com/en/Grid-Extension/Offshore-projects/Projects/Ostwind-1) in the Cluster Westlich Adlergrund (CWA). We currently expect our connection works to be ready by 2019. 

The electricity from the entire Cluster Westlich Adlergrund (CWA) will be transported from offshore substation Andalucia to the onshore substation in Lubmin by a 220 kV submarine cable over a distance of approx. 90 kilometres.

You can read more about the subject in our bilingual PDF brochure ‘From the sea to your power socket’.