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ELECTRIFICATION IN MOTION

GE Vernova strengthens its HVDC Solutions Portfolio with the new 3 GW ±525 kV VSC valve

August 26, 2026
3GQ VSC valve

GE Vernova’s new High Current VSC (Voltage-Sourced Converter) Valve is designed to extend its established VSC-HVDC platform to more than 3 GW at ±525 kV, helping transmission operators move larger amounts of electricity over long distances.

Large renewable energy zones, offshore wind projects, subsea links, and cross-border interconnectors all create the same challenge: how do you move more power across longer distances, efficiently and reliably?

High-Voltage Direct Current, known as HVDC, is one of the key technologies used to solve that challenge. It helps move large amounts of electricity over long distances using overhead lines, underground cables, or subsea connections.

During CIGRE 2026, GE Vernova is showcasing its new High Current VSC Valve with future-ready flexibility, designed to help transmission operators move more power through long-distance HVDC links.

In simple terms, the new addition to the existing GE Vernova HVDC VSC valve family helps increase the power capacity of a high-voltage power transmission link, while giving customers flexibility to adapt the design to different project and site needs.

 

What the VSC valve does

A converter valve is one of the core technologies inside an HVDC Solution.

Most power grids use alternating current (AC), HVDC transmission uses direct current (DC), because it is considered more efficient for moving large amounts of power over long distances. The converter valve changes electricity between AC and DC so it can move through the HVDC link and then connect back into the grid.

HVDC systems typically use one of two main converter technologies: Line Commutated Converter, or LCC, and Voltage-Sourced Converter, or VSC. LCC technology is well suited for very large bulk-power transmission where strong grids and vast land are available at both ends. VSC technology offers greater controllability and flexibility, grid forming capability, as well as a reduced footprint, making it well suited for projects such as offshore wind connections, subsea interconnectors, and links where grid conditions are more complex.

GE Vernova already supports large-scale HVDC projects using both LCC and VSC technologies, including projects capable of transmitting more than 2 GW of power at ±525 kV. 

 

Built for real project conditions

Large HVDC projects are complex. Customers need more than a higher power rating. They need technology that can be adapted to different sites, installed efficiently, monitored during operation, and maintained safely over the life of the asset.

The High Current VSC Valve has been designed with those practical project needs in mind.

Key capabilities include:

  • Capacity and performance: Designed to support more than 3 GW at ±525 kV and both bipole and symmetrical monopole configurations, with applications across overhead lines and underground cables.
  • Modular flexibility: Valve towers can be configured with up to six tiers, allowing the technology to be adapted to different voltage levels, site constraints and project requirements, while supporting IEC 62501 type testing.
  • Maintenance innovation: Removable Power Electronics Units allow individual sub-modules to be maintained independently. Ground-level cooling isolation, fast capacitor discharge and grounding are designed to improve personnel safety and reduce maintenance outage time.
  • Advanced communication: Passive Optical Network (PON) technology carries multiple data signals over shared optical fibre, reducing cabling and installation complexity.
  • Safety and control: Rapid capacitor discharge, optional remotely triggered capacitor shorting and independent high-speed overcurrent protection are designed to improve maintenance safety, increase available maintenance time and protect critical power electronics.
  • Resilience and adaptable design: The valve architecture can be configured for different seismic, voltage and altitude requirements, while its cooling design draws on decades of GE Vernova field experience.
     

Building on established HVDC experience

GE Vernova’s VSC-HVDC technology is already being deployed for large transmission projects, including the TenneT 2 GW Program in Europe and the 2.5 GW Khavda-South Olpad renewable power transmission corridor in India.

The new valve takes that established platform forward by increasing the power capability to more than 3 GW at ±525 kV, while keeping the design flexible for different transmission needs.

All versions and variants of GE Vernova’s VSC valves are manufactured and tested at the company’s Stafford facility in the UK. Stafford is a key global manufacturing and technology center for GE Vernova’s HVDC portfolio.

For Cornelis Plet, Chief Technology Officer, Grid Systems Integration, GE Vernova’s Electrification segment, the new valve reflects the growing importance of transmission infrastructure in a more electrified world.

“Electricity demand is growing rapidly, and transmission capacity needs to grow with it,” said Cornelis Plet. “By evolving our established VSC HVDC solutions to support more than 3 GW, we are giving customers greater transmission capacity without compromising on flexibility or maintainability. The new design builds on existing VSC valve technology with features intended to simplify installation, improve maintenance, and reduce lifecycle complexity, while allowing adaptation to meet different project needs. It is about moving more power, reliably, on technology our customers already trust.”
 

Part of an integrated HVDC solution

The High Current VSC Valve is one part of GE Vernova’s broader HVDC solution.

Long-distance transmission projects depend on many technologies working together, including converter valves, transformers, control and protection systems, communications, monitoring, and system integration capabilities.

That integrated approach matters because customers are not only building a link from one point to another. They are building critical transmission infrastructure that must perform reliably over its expected service life.

For customers, the goal is clear: move more electricity, over longer distances, with technology that can support the scale, complexity, and lifecycle needs of future power systems.

GE Vernova is participating in the CIGRE Paris Session 2026 from August 23 to 28. Visitors can meet GE Vernova’s Electrification experts and join us at the "Powering the Next Era of HVDC: The Evolution of Valve Technology” Technical Seminar on Wednesday, August 26th at 17:00 CET.

You can read more about GE Vernova’s HVDC Solutions here