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Home > HV/MV Equipment > g³ Insulating & Switching Gas

G3 - GE’s SF₆ SF6 Alternative For High Voltage Applications

SF₆ SF6 (or Sulphur Hexafluoride) has been the standard gas used inside high voltage electrical equipment as an insulating and arc-quenching medium. However, SF₆ SF6 is also listed as a potent greenhouse gas according to the Kyoto Protocol, with 24,300 times the comparative Global Warming Potential (GWP) of CO₂ and a lifetime of 1,000 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 SF6 to help utilities and industries reduce their environmental impact.

INTRODUCING g³ G3 INSULATING AND SWITCHING GAS
g³ (pronounced “g cubed”) is GE's game-changing alternative to SF₆ 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: some 99% less gas GWP, comparatively. g³ products have a significantly improved life cycle assessment (LCA) compared with SF₆ products and other alternatives. In addition, with product dimensions remaining the same, there is no major increase of raw materials, thus no pollution transfer induced on any other environmental indicators. Also, g³ products operate with no restriction under the same temperature range as SF₆ products (down to -30°C). 

g³ Range of Products

  • F35g GAS-INSULATED
    SUBSTATIONS 145 kV
    Extended warrranty
  •  
  • T155 DUAL GAS-INSULATED SUBSTATIONS 420 kV
    T155 DUAL GAS-INSULATED SUBSTATIONS 420 kV
  •  
  • T155 DUAL GAS-INSULATED
    LINES 420 kV
    ALM PROGRAM
  •  
  • GL312g LIVE TANK CIRCUIT-BREAKERS 145KV
    Advanced data collection
PRODUCT
ROADMAP
VIDEOS &
TESTIMONIALS
WHITEPAPERS &
CASE STUDIES
MORE
RESOURCES

g³ News Room


Exponential growth in sales of GE’s SF₆-free 145 kV g³ gas-insulated substation in Europe
 

LATEST NEWS ON g³

Exponential growth in sales of GE’s SF₆-free 145 kV g³ gas-insulated substations in Europe.

Read the article >>>

 

 



g³ Product Portfolio Development

  • EU's LIFE program awards €2.2 mn for world's first SF₆-free 420 kV CB

    Recognizes potential of GE's g³ gas to help cut global greenhouse gas emissions, demonstrating that g³ technology can be applied to all other high-voltage levels of Europe's electrical networks.

  • EU supports GE's development of a 245 kV g³ CB

    Second GE's g³ gas project to be co-funded by the EU within two years. New g³ gas 245 kV circuit-breaker will be scalable to other high-voltage levels across Europe's electrical grids.

  • U.S. DOE awards $3.7mn for decarbonization projects with g³ gas technology

    First award relates to the development of a SF₆-free 245 kV dead tank circuit-breaker. Second award will focus on the life cycle management of g³ products.

  • EU affirms confidence in GE’s g³ technology by co-funding development of its 245 kV g³ GIS

    This is the third project co-funded by the EU within 4 years. This new g³ 245 kV GIS will play an important role in meeting demand for compact SF₆-free substations in urban areas, as well as offshore projects

G3 Interactive Explorer

g3 Insulating & Switch Gas Interactive App

Project References

g³ insulating and switching gas is a proven alternative to SF₆ SF6 that provides technical, environmental and financial advantages.

50+ LEADING UTILITIES
have decided to use
equipment with g³ gas G3
4 MILLION+ TONS OF CO₂ EQUIVALENT
To date, g³ G3 projects have avoided
the installation of 4 million+ tons of
additional greenhouse gas on
electrical networks
G3 Gas-Insulated Substations
145 kV
50+ sites - 500+ bays
g³ Gas-Insulated Substations
420 kV
4 sites - 60+ bays
G3 Gas-Insulated Lines
420 kV
10+ sites - 20+ kilometers
G3 Live Tank Circuit-Breakers
145 kV
10+ sites - 100+ LTCB
Connect with our global g³ 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, 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 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 SF6
g³ products feature the same performance and dimension as SF₆ 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 SF6-free insulating gas for HV switchgear and the impacts on the environment between various mixtures including SF₆ SF6 versus g³. Discover what GE's g³ replacement for SF₆ SF6 gas means for HV equipment.

Video - GE’s Grid Solutions’ GL312g g3 Circuit Breaker Installation at Planchamps Substation, Switzerland Video - GE’s LifeGRID Project: Development of a 420 kV SF6-free g3 GIS Circuit Breaker Video - g³ gas becomes mobile in Spain Video - Customer Insights with National Grid’s Mark Waldron GE g3 solution for GIS

Better for the grid and better for the planet
Learn more about g³ G3 insulating and switching gas by contacting one of our technical experts