REGISTER / SIGN IN Home Products & Services Industries News About Us Resources Contact Store SF6 Free Solutions Home > HV/MV Equipment > g³ Insulating & Switching Gas g3 - SF6 Alternative For High Voltage Applications SF6 (or Sulphur Hexafluoride) had been the standard gas used inside high voltage electrical equipment as an insulating and arc-quenching medium. However, SF6 is also listed as an extremely potent greenhouse gas according to the Kyoto protocol, with 23,500 times the comparative Global Warming Potential of CO2 and a lifetime of 3,200 years in the atmosphere. With grid operators across the world becoming increasingly concerned about the environmental impact, GE offers a commercially available and viable alternative to SF6 to help utilities and industries reduce their environmental impact. INTRODUCING g3 INSULATING AND SWITCHING GAS g³, (pronounced "g" cubed) is GE's game-changing alternative to SF6 gas, developed for HV electrical transmission equipment. g³ products feature the same ratings and same dimensional footprint as the state-of-the-art SF6 ones, with a drastically reduced environmental impact: more than 99% less gas global warming potential (GWP), comparatively. Also, g³ products operate with no restriction under the same temperature range as SF6 products (down to -30°C). Like SF6, g3 is non-toxic and not flammable. It falls in the same safety class as SF6. GE’s g3 products are type-tested and available for live-tank circuit breaker and gas-insulated substations (GIS) up to 145 kV, and gas-insulated lines (GIL) up to 420 kV. DOWNLOAD THE BROCHURE LATEST PRESS RELEASE PRODUCT ROADMAP VIDEOS & TESTIMONIALS WHITEPAPERS & CASE STUDIES MORE RESOURCES Latest g³ News EU Commission assessed whether cost-effective, technically feasible, energy efficient alternatives to SF₆ exist. The answer is YES and g³ is a strong SF₆-free candidate. READ THE FULL REPORT With the support of EU's LIFE Programme, GE is developing a 420 kV/63 kA circuit breaker applied to a g³-gas insulated substation (GIS), demonstrating g³ capability to address the highest ratings required. LEARN MORE Scotland's SSEN Transmission awards GE's Grid Solutions a contract for world's first 420 kV g³ gas-insulated substation (GIS) VIEW INFOGRAPHIC g³ Interactive Explorer Project References g³ insulating and switching gas is a proven alternative to SF6 that provides technical, environmental and financial advantages. 23 LEADING UTILITIES have decided to use equipment with g³ 1 MILLION+ TONS OF CO2 EQUIVALENT To date, g³ projects have avoided the installation of 1 million+ tons of additional greenhouse gas on electrical networks g³ Gas-Insulated Substations 145 kV, -25 °C 16 sites - 100+ bays g³ Gas-Insulated Substations 420 kV, -25 °C/-30° 1 site – 9 bays g³ Gas-Insulated Lines 420 kV, -25 °C 8 sites - 5000+ meters g³ Live Tank Circuit-Breakers 145 kV, -30 °C 5 sites – 14 CB Connect with our global g3 team today to learn more CONTACT US Key Benefits g³ is a fully type-tested gas mixture that provides the same technical performance as SF6, while reducing the environmental impact. Applied to HV Switchgear, the g³ gas Global Warming Potential (GWP) is reduced by more than 99%. In other words, the residual gas GWP is less than 1% of that of SF6 The environmental benefits of g³ are not limited to Global Warming mitigation. A Life Cycle Assessment demonstrates that using g³ improves all the environmental indicators compared to SF6 g³ products feature the same performance and dimension as SF6 products Utilities can adopt best practices in terms of environment sustainability Utilities can qualify for tax reduction or incentives related to greenhouse gas emissions reduction Videos & Testimonials This collection of videos and industry expert talks explores SF6-free insulating gas for HV switchgear and the impacts on the environment between various mixtures including SF6 versus g³. Discover what GE’s g³ replacement for SF6 gas means for HV equipment. Better for the Grid and Better for the Planet, learn more about g³ insulating and switching gas by contacting one of our technical experts CONTACT SALES CONTACT INFORMATION PRIVACY COOKIES TERMS OF USE SECURITY About GE’s Grid Solutions Grid Solutions, a GE Renewable Energy business, serves customers globally with over 13,000 employees. We provide power utilities and industries worldwide with equipment, systems and services to bring power reliably and efficiently from the point of generation to end power consumers. Grid Solutions is focused on addressing the challenges of the energy transition by enabling the safe and reliable connection of renewable and distributed energy resources to the grid. We electrify the world with advanced grid technologies and accelerate the energy transition. Copyright © GE, 2021 We use cookies to personalize and enhance your experience on our site. Visit our Privacy Policy to learn more or manage your personal preferences in our Cookie Consent Tool. DECLINE ACCEPT OPTIONS