Seatrium’s subsidiary, Seatrium New Energy, and its consortium partner Aibel have initiated arbitration for the DolWin epsilon offshore converter platform of TenneT’s DolWin5 grid connection.
The arbitration was filed with the Arbitration Institute of the Stockholm Chamber of Commerce, as reported by Seatrium on January 22.
The dispute involves differences under the consortium agreement signed in May 2019, covering design, engineering, procurement, construction, installation, and commissioning of the 900 MW offshore converter platform. Seatrium stated that arbitration is sought to resolve disagreements through an independent tribunal.
The differences include alleged breaches of obligations related to direct scopes of work, along with disputes over responsibility allocation and cost and revenue distribution linked to joint scope activities. Both parties have made claims against each other under the agreement.
For direct scope work, Seatrium New Energy has filed claims of approximately EUR 180 million against Aibel, while Aibel has counterclaimed about EUR 113 million. Seatrium expects that any valid claims can be satisfied from the consortium’s reserved funds of around EUR 5 million, minimizing further financial exposure.
Aibel has also claimed roughly EUR 17 million for joint scope matters. Seatrium contests these claims and seeks arbitration declarations to clarify obligations and liabilities under the consortium agreement.
The DolWin epsilon platform was constructed at Seatrium’s yard in Singapore and departed for Aibel’s facility in Haugesund, Norway, for further work in October 2023.
Installed at its site in the German North Sea in June 2024, the platform is 82m long, 73m wide, and 84m high, with its topside and substructure weighing 11,450 and 12,100 tonnes, respectively.
The DolWin5 grid connection was fully energized in October 2025.
Borkum Riffgrund 3, a 900 MW offshore wind farm utilizing the DolWin5 connection, supplied power to the German grid in December 2025. The wind farm is expected to be fully operational in the first quarter of this year.
Original Story at www.offshorewind.biz