GE Vernova has announced it will deploy two high-voltage 420 kV gas-insulated substations (GIS) that are free of sulphur hexafluoride (SF₆) for Statnett SF, Norway’s transmission system operator, and Equinor ASA. The contract, awarded in Q4 2024, includes the design, supply, and installation of substations at Skaidi and Hyggevatn as part of Statnett’s 420 kV transmission line project, a key step in Norway’s energy transition and decarbonisation efforts.
The Skaidi substation will upgrade an existing facility, while Hyggevatn will be a new installation. Both sites aim to modernise Norway’s grid, expand capacity, and enable the electrification of Melkøya Island, which houses Equinor’s Snøhvit gas field and Hammerfest LNG plant.
These substations will use GE Vernova’s g³ technology, which replaces SF₆ – a potent greenhouse gas – with an alternative that cuts global warming potential by about 99%. The g³ technology, part of the company’s GRiDEA decarbonisation portfolio, has been recognised by the EU Commission LIFE Program and is designed to help grid operators meet net-zero targets.
Both substations are expected to be operational by 2029.
