• Contract awarded for BalWin5, a 2.2 GW offshore grid link expected to supply power to around 2.75 million households
• GE Vernova to provide full HVDC system and both onshore and offshore converter stations
• Seatrium to handle design, construction, transport, and installation of the offshore platform

Berlin, Germany; Singapore (December 11, 2025) – GE Vernova and Seatrium announced that their consortium has secured a contract from TenneT for a key part of BalWin5. This 2.2-gigawatt (GW) offshore high-voltage direct current (HVDC) connection will transmit electricity generated by wind farms in the German North Sea to the onshore grid in Germany. Once operational, the system is expected to supply renewable energy to approximately 2.75 million households.

BalWin5 is part of TenneT’s broader 2 GW offshore program, designed to accelerate the integration of large-scale offshore wind into Germany’s energy system. The project supports the country’s long-term goals related to energy security and decarbonization.

This marks the fourth contract awarded to the GE Vernova–Seatrium consortium under the five-year Framework Cooperation Agreement with TenneT signed in March 2023, and the first project within TenneT’s German 2 GW portfolio. BalWin5 represents a significant step in strengthening Germany’s grid infrastructure and advancing its energy transition.

Scope of the consortium

Under the agreement, GE Vernova’s Electrification Systems business will deliver the full HVDC solution, including both onshore and offshore converter stations, along with advanced control and protection systems to ensure stable and secure grid operations. HVDC technology enables efficient long-distance transmission of large volumes of offshore wind power while minimizing losses.

Seatrium will be responsible for the engineering, construction, transport, and installation of the offshore converter platform in the German North Sea. Project execution is scheduled to begin on January 1, 2026, with most fabrication carried out at Seatrium’s facilities in Singapore and Batam.

“BalWin5 reflects the scale of Germany’s energy transition, and we are proud to support TenneT in this critical initiative,” said Philippe Piron. “Our expertise in HVDC technology allows us to deliver efficient and reliable solutions that support long-term energy security. Together with Seatrium, we are confident in delivering a system that strengthens offshore grid infrastructure and supports Europe’s transition to a more sustainable energy future.”

“We are pleased to extend our collaboration with TenneT and GE Vernova on this transformative offshore project,” said Samuel Wong. “Building on experience from previous platforms, we aim to deliver this project safely and efficiently through our series-build approach and global delivery model.”

About BalWin5

BalWin5 is part of a series of offshore grid projects developed by TenneT to transport wind-generated electricity from the North Sea to Germany’s mainland grid. Each project is designed to handle large volumes of renewable energy and support the country’s offshore wind expansion.

With a transmission capacity of up to 2.2 GW, BalWin5 will deliver power from offshore wind farms to homes and businesses across Germany. The system includes an offshore converter station, an onshore station in Bremen-Werderland, and approximately 325 kilometers of combined subsea and land cables. Commissioning is planned for 2032.

The additional 200 MW capacity above the standard 2 GW design provides extra flexibility, allowing the system to transmit more electricity when wind conditions are favorable. This improves efficiency without requiring additional infrastructure.

Compared to older offshore connections, which typically handle around 900 MW, this higher-capacity design enables more efficient use of infrastructure and lowers the cost per megawatt delivered. By increasing transmission capacity, fewer systems are needed to move the same amount of energy, improving overall network efficiency.

TenneT is applying this new 2 GW standard across multiple projects through long-term framework agreements, helping streamline delivery, reduce costs, and improve supply chain visibility.

About GE Vernova

GE Vernova (NYSE: GEV) is a global energy company operating across Power, Wind, and Electrification segments, supported by accelerator businesses. With more than 130 years of experience, the company plays a central role in advancing the global energy transition by expanding electrification while reducing carbon emissions.

Headquartered in Cambridge, Massachusetts, GE Vernova employs approximately 85,000 people in around 100 countries. Guided by its mission, The Energy to Change the World, the company develops technologies that enable a more reliable, sustainable, and secure energy future.

GE Vernova’s Grid Solutions business provides advanced technologies for power transmission and distribution, supporting modern and resilient energy systems worldwide.

Source