Green Gas
for Grid
SF6 Free Solutions

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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 now offers an alternative SF6-free solution.

INTRODUCING g3 – GREEN GAS FOR GRID
g³, (pronounced "g" cubed) is GE's environmentally-friendly 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).

GE’s g3 products are type-tested and available for live-tank circuit breakers and gas-insulated substations up to 145 kV, gas-insulated lines (GIL) up to 420 kV and instrument transformers up to 245 kV.

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VIDEOS &
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Project References

g³ is an environmentally friendly alternative to SF6 that provides a number of technical, environmental and financial advantages.

16 LEADING UTILITIES
have decided to use
equipment with g³
386,000 TONS OF CO2 EQUIVALENT
To date, g³ projects have prevented
the installation of 386,000 tons of
additional greenhouse gas on
electrical networks
g³ Gas-Insulated Lines
420 kV, -25 °C
5 sites - 2033 meters
g³ Gas-Insulated Substations
145 kV, -25 °C
12 sites - 70 bays
g³ AIS Instrument Transformers
up to 245 kV, -30 °C
3 sites – 6 CT – 3 CMU
g³ Live Tank Circuit-Breakers
123 kV, -30 °C
1 site – 2 CB

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 by contacting the GE sales team