Statnett is constructing four new 420 kV transformer stations in Norway, marking a significant move towards reducing greenhouse gas emissions. The stations—located in Hammerfest (Hyggevatn and Skaidi) and Oslo (Liåsen and Ulven)—are the first of their kind in Scandinavia to be built entirely free of the potent greenhouse gas SF6, traditionally used as an insulation and extinguishing agent in gas-insulated substations.

This shift is part of Statnett's long-term strategy to eliminate SF6 from its facilities by 2050. Each kilo of SF6 avoided translates to a reduction of 25,000 kilos of CO2 equivalents, underscoring the environmental benefits. Ingeborg Øfsthus, Executive Vice President for Technology and Transformation at Statnett, emphasized that these innovations will play a crucial role in lowering the company's overall carbon footprint.

The new technology, which has been tested in lower voltage levels, is now being applied at 420 kV for the first time. Guilhem Blanchet, VP for Technologies Development Substation at Statnett, highlighted that this achievement follows years of collaboration with equipment suppliers and builds upon the experience gained during earlier pilot projects.

With this new development, Statnett continues to lead the way in sustainable energy solutions, aiming to phase out SF6 across its grid infrastructure.