GE Vernova's Grid Solutions offers cutting-edge gas-insulated lines (GIL) up to 420 kV designed for both SF₆ and SF₆-free applications, leveraging more than 60 years of expertise in gas-insulated substation technology. This unique flexible design allows transmission system operators (TSOs) to purchase the SF₆ version initially with the option to transition easily to the SF₆-free g³ solution, ensuring compliance with emerging regulations on fluorinated greenhouse gases without compromising operational performance.

This new dual gas GIL reflects GE Vernova's strong commitment to reducing carbon footprint. Our g³ gas used as insulating medium allows us to provide TSOs a fully SF₆-free version, achieving a 99% reduction in CO₂-equivalent emissions of the gas contribution to global warming without increasing the diameter or the thickness of the GIL. Despite this major step toward decarbonization, the GIL maintains the same performance and ratings as its SF₆ based counterpart. Further enhancements include a reduction in gas mass by more than 15% and an innovative gas sealing system that offers improved tightness, with the total sealing length cut in half compared to previous designs.

The path to decarbonization is further supported by GE Vernova's GRiDEA portfolio, which includes the T155g SF₆-free GIS. These solutions help achieve a lower carbon footprint over a 40-year substation life cycle compared to traditional SF₆ products. Customer benefits include field-proven reliability, low electromagnetic fields, a low total cost of ownership, and smart grid readiness, underpinned by extensive field experience with more than 200 km of SF₆-GIL and more than 30 km of g³ GIL installations worldwide.

Transitioning to SF₆-free systems has never been so easy, already today even at 420 kV.