# GE Vernova and Seatrium win TenneT contract for BalWin5 offshore HVDC link

GE Vernova and Seatrium's consortium was awarded a TenneT contract to deliver major parts of BalWin5, a 2.2 GW offshore HVDC grid connection for German North Sea wind power. GE Vernova will supply converter stations and HVDC technology, while Seatrium will design, build and install the offshore converter platform.

- Type: Contract
- Announced: 2025-12-11
- Where: German North Sea and onshore Germany, Germany
- Status: announced
- Capacity: 2.2 GW
- Products: HVDC converter stations, offshore converter platform, HVDC control and protection systems
- Sectors: [Power Generation Equipment](https://endata.com/sectors/power-generation-equipment.md), [Electrical Equipment](https://endata.com/sectors/electrical-equipment.md)

## Companies

- [TenneT](https://endata.com/companies/272.md) (customer)
- [Sembcorp Marine](https://endata.com/companies/827.md) (supplier)
- [GE Vernova](https://endata.com/companies/2947.md) (supplier)

## Sources

- [gevernova.com](https://www.gevernova.com/news/press-releases/ge-vernova-seatrium-secure-major-contract-tennet), 2025-12-11: "GE Vernova's Electrification Systems business is expected to deliver the onshore and offshore converter stations and the complete HVDC technology"

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.