GE Vernova and Seatrium have been awarded a contract by TenneT for work on BalWin5, a 2.2GW offshore HVDC grid connection, that will transmit electricity from offshore wind farms in the German North Sea to the onshore transmission network in Germany.
Once operational, BalWin5 is expected to provide enough renewable electricity to power approximately 2.75m households. The system will include an offshore converter station in the North Sea, an onshore converter station in Bremen-Werderland, and a combined 325 km of sea and land cables. Commissioning is planned for 2032.
This contract is the fourth project awarded to the GE Vernova-Seatrium consortium under the five-year framework cooperation agreement with TenneT announced in March 2023.
As part of the contract, GE Vernova’s Electrification Systems business is expected to deliver the onshore and offshore converter stations and the complete HVDC technology, including advanced control and protection systems.
HVDC links are designed to support the high-capacity, long-distance transmission of offshore wind power, helping to reduce transmission losses and improve overall system performance.
Seatrium will design and construct the offshore converter platform and will manage transportation and installation in the German North Sea. Work is scheduled to commence on January 1, 2026, with the majority of platform fabrication taking place at Seatrium’s yards in Singapore and Batam.
