Offshore wind farms in the Baltic Sea fed about 5400GWh of electricity into the East German extra-high-voltage grid via 50Hertz’s connection systems in 2025.
50Hertz said this represents growth of around 10% year on year and is enough to cover the electricity consumption of Leipzig and its surrounding area.
According to the company, the increase stems from continued expansion off Rügen, with the 450MW Baltic Eagle project now delivering full output via the Ostwind 2 link following the earlier connection of the 250MW Arcadis Ost 1 wind farm.
The company noted that offshore yield rose from 4300GWh in 2023 to 4900GWh in 2024.
Stefan Kapferer, chief executive of 50Hertz, said: “The Baltic Sea is not only a fantastic holiday destination. Their role in security of supply and climate protection in Germany is becoming increasingly important.”
Kapferer added: “Iberdrola’s Windanker wind farm is scheduled to be commissioned in the second half of 2026, and the largest offshore wind farm in the Baltic Sea to date is scheduled to be connected to the grid in 2028 – the Gennaker wind farm projected by Skyborn Renewables.”
He stated: “In addition, 50Hertz will also provide access to wind power outside German waters in cooperation with its Danish partner Energinet, including through the Bornholm Energy Island joint project.”
While offshore generation increased, 50Hertz said onshore wind yield in its area fell by around 2000GWh last year to 33,800GWh due to weather conditions despite additional turbines being built.