GE Vernova and Seatrium awarded BalWin5 HVDC project by TenneT
GE Vernova and Seatrium have been awarded a contract by transmission system operator TenneT to deliver a major part of the BalWin5 offshore grid connection project.
Image credit: TenneT
Germany, Berlin: GE Vernova and Seatrium have been awarded a contract by transmission system operator TenneT to deliver a major part of the BalWin5 offshore grid connection project in the German North Sea. The project is designed to transmit up to 2.2 GW of electricity from offshore wind farms to Germany’s onshore transmission network.
BalWin5 forms part of TenneT’s programme of next-generation offshore high-voltage direct current connections, each designed around a 2 GW standard. Once operational, the connection is expected to supply renewable electricity equivalent to the consumption of around 2.75 million households. It is the fourth project awarded to the GE Vernova–Seatrium consortium under a five-year framework agreement signed with TenneT in March 2023, and the first related to TenneT’s German 2 GW projects.
Under the contract, GE Vernova’s Electrification Systems business is expected to provide the onshore and offshore converter stations as well as the complete HVDC technology, including control and protection systems. Seatrium will design and construct the offshore converter platform and oversee its transport and installation in the North Sea. Fabrication work is scheduled to begin on 1 January 2026, with most of the platform construction taking place at Seatrium’s yards in Singapore and Batam.
The BalWin5 system will include an offshore converter station, an onshore converter station at Bremen-Werderland, and a combined sea and land cable route of about 325 kilometres. Commissioning is planned for 2032. The system is designed with additional technical capacity beyond the standard 2 GW to allow higher power transfer when wind conditions permit, without the need for additional infrastructure.
Source: GE Vernova
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