TenneT Energises DolWin5 offshore grid link
The 900-MW HVDC system connects Borkum Riffgrund 3 offshore wind farm to Germany’s onshore grid, marking a key milestone in North Sea power integration.
Image for illustrative purposes
Germany: Transmission system operator TenneT has energised its 900-MW DolWin5 offshore converter platform in the German North Sea and begun commissioning, advancing the country’s offshore wind transmission network.
The 130-km HVDC link connects the Borkum Riffgrund 3 offshore wind farm directly to the mainland. Using 66-kV three-phase AC cables, the generated electricity is converted into DC on the DolWin epsilon platform before being transmitted to Hamswehrum, near the river Ems. From there, onshore cables transport the power to a converter station in Emden, where it is converted back to AC and integrated into the national grid.
The 27,000-t DolWin epsilon platform was built by a consortium of Seatrium Ltd (Singapore) and Aibel AS (Norway) and installed earlier this year. Commissioning activities and grid connection tests are ongoing at the Ørsted-developed offshore wind farm, whose final turbine was erected in early 2025.
DolWin5 represents a major step in strengthening Germany’s offshore transmission capacity and supporting its renewable energy transition by efficiently linking North Sea wind power to onshore demand centres.
Source: Renewables Now
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