GE’s Green Gas for Grid Technology in Norway
G Cube Grid TechnologyGE

GE’s Green Gas for Grid Technology in Norway

Norway’s transmission grid operator Statnett announced it will install the world’s first 420 kilovolt 63 kiloampere GE Green Gas for Grid gas-insulated

Norway’s transmission grid operator Statnett announced it will install the world’s first 420 kilovolt 63 kiloampere GE Green Gas for Grid gas-insulated line and busbars operating at minus 30 degree C within its new 420 kV Hamang substation located in Oslo’s Sandvika area. That makes Norway the eighth country in Europe to adopt g-cubed technology, a game-changing alternative to sulphur hexafluoride, an insulating and switching gas traditionally used in high-voltage substation equipment. Identified as the world’s most potent greenhouse gas by the 1997 Kyoto Protocol, SF6 is estimated to contribute 23,500 times more emissions than CO₂, if leaked, and can remain in the atmosphere for up to 3,200 years.

Gas-insulated line installations from eight major European electrical utilities account for two-thirds of this reduction. Statnett alone is expected to avoid the installation of an additional 24,000 tons of CO2 equivalent to the Norwegian grid.

G Cube has been identified as an alternative to SF6 for use in high-voltage equipment in a report published by Norway’s Water Resources and Energy Directorat in October 2019. This was confirmed by the EU Commission in a similar report published in September 2020, which concluded there are cost-effective, technically feasible and energy efficient alternatives to SF₆. The EU also highlighted that G Cube, unlike any other SF6 alternatives, is the solution when space is a constraint as G Cube products feature the same compactness and performance as traditional SF6 equipment.

G Cube products also have a greatly reduced impact on the environment over their lifetime compared with other solutions, according to life-cycle assessment, based on international ISO 14040/14044 standards.

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