Offshore Substations News


Mammoet to Handle Substation Load-Outs for TenneT 2GW Program

Feb 04, 2026

Heavy-lifting and transport specialist Mammoet has signed a support contract with Seatrium to carry out the load-out of three offshore substations for TenneT’s 2 GW offshore grid connection program in the North Sea.Under the agreement, Mammoet…

50Hertz, Skyborn Ink Deal for Gennaker Offshore Converter Platforms

Jan 28, 2026

German transmission system operator 50Hertz and offshore wind developer Skyborn Renewables have signed a platform cooperation agreement that clears the way for the commissioning of the Gennaker offshore wind farm in the German Baltic Sea.The…

Seatrium and Aibel Seek Arbitration to Resolve DolWin 5 Disputes

Jan 22, 2026

Seatrium, through its wholly owned subsidiary Seatrium New Energy (SNE), and consortium partner Aibel have started arbitration proceedings for the disputes related to the delivery of TenneT’s DolWin 5 offshore converter platform project in Germany’s North Sea…

HSI Joint Venture Installs Jasmund Offshore Substation in Baltic Sea

Jan 14, 2026

The HSI joint venture, comprising HSM Offshore Energy, Smulders and Iv, has completed the installation of the Jasmund offshore substation (OSS) at the Ostwind 3 location in the Baltic Sea, marking a key milestone in Germany’s offshore grid expansion program…

HD Hyundai Gets ABS Clearance for Next-Gen Floating Offshore Substation

Jan 13, 2026

American Bureau of Shipping (ABS) has issued approval in principle (AiP) to HD Hyundai Heavy Industries (HD HHI) for its new design of a floating offshore substation to support deepwater wind farms.The substation concept received a SMART (SHM) Tier 3 AiP from ABS…

ABS Grants Approval for Seatrium’s Next-Gen Offshore Substations

Jan 06, 2026

The American Bureau of Shipping (ABS) has issued approval in principle (AIP) to Seatrium for its next-generation offshore substation (OSS) design.Seatrium’s design features 500 MW OSS modules, engineered for scalability and aligned with the highest international standards…

Jan De Nul Wraps Up Cable Installation Job for TenneT’s DolWin Platform

Dec 15, 2025

Belgian offshore contractor Jan De Nul has concluded the 2025 transport and installation campaign of three HVAC grid connection cables at TenneT’s DolWin kappa platform.When finalized, these cables will ensure the transport of almost 660 MW renewable electricity from two offshore wind farms…

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