Siemens Energy wins the largest order for SF6-free gas-insulated switchgear in Europe

by Apr 27, 2021

Siemens Energy has signed a deal with Finland’s Transmission System Operator, Fingrid to supply 10 bays of SF6-free GIS. Fingrid decided to modernize the 110 kV switchgear in Virkkala substation in Lohja, so that it operates without any climate-harming gases using the GIS of type 8VN1 from Siemens Energy’s SF6-free Blue portfolio. 8VN1 uses vacuum interrupters for switching and clean air as insulation medium instead of SF6 which has a global warming potential of 23,500 and a life span of 3,200 years in the atmosphere.

This is part of Fingrid’s green initiative to phase out SF6 as an insulating gas from their network. Total reduction of SF6 gas at Virkkala substation will be 2,500 kg equal to 57,000 tons of CO2. It will be the first GIS in Finland that replaces SF6, the most potent greenhouse gas in the world with “clean air”, a pure mixture of nitrogen and oxygen with zero global warming potential. It represents Siemens Energy’s largest order for SF6-free HV GIS in Europe to date. Commissioning of the substation is scheduled for summer 2022.

In addition to Finland, Siemens Energy is also supporting BKK Nett, Norway’s second largest grid operator in its efforts to eliminate SF6 usage from their substations. Currently, two of BKK Nett’s substations have been rebuilt with the SF6-free GIS from Siemens with more to come in the future.

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