Germany’s offshore wind power generation in 2025 reached 26.1 TWh, with 20.8 TWh from the North Sea and 5.38 TWh from the Baltic Sea, as reported by TenneT Germany, responsible for the North Sea grid.
German North Sea Offshore Wind Power
In 2025, TenneT Germany transmitted roughly 20.8 TWh of wind energy from the North Sea to the mainland, enough to meet the renewable energy needs of around 6.5 million households.
Despite the stable output in terawatt-hours compared to 2024, North Sea wind power contributed 15.7% to Germany’s total wind energy in 2025, up from 13.86% the previous year, marking an increase of about 13%, according to TenneT Germany.
On December 30, 2025, the maximum feed-in capacity from offshore wind farms in the German North Sea was 6,543 MW.
“Europe now has the opportunity to unlock the full potential of the North Sea as a green power plant,” said Tim Meyerjürgens, CEO of TenneT Germany. “This potential is crucial for a secure, independent, and energy-resilient Europe. The North Sea coastal states are planning and implementing a cross-border offshore energy system. As a leading offshore transmission system operator, TenneT Germany is committed to driving this development.”
German Baltic Sea Offshore Wind Power
50Hertz, managing the Baltic Sea grid, reported on February 9 that offshore wind farms in the region contributed nearly 5,400 GWh to the eastern German grid, about 10% more than in 2024. The increased output in 2025 was due to the expansion of wind energy off the island of Rügen.
Since last year, the 450 MW Baltic Eagle wind farm has been fully operational via the Ostwind 2 connection, following the Arcadis Ost 1 offshore wind farm.
“Throughout 2025, the six operating offshore wind farms supplied enough electricity for Leipzig and its surrounding region,” 50Hertz noted.
While offshore wind generation rose, onshore wind production in the 50Hertz grid area dropped by around 2,000 GWh due to weather, despite new turbine installations, as per the TSO.
“In mid-2026, Iberdrola’s Windanker wind farm is slated for commissioning, with the largest Baltic Sea wind farm — Skyborn Renewables’ Gennaker — expected in 2028. Additionally, 50Hertz and Energinet will enhance wind power access through the Bornholm Energy Island project,” said Stefan Kapferer, CEO of 50Hertz.
Original Story at www.offshorewind.biz