kV sulfur hexafluoride SF6 free live tank circuit-breakers1 utilizing GE’s g3 gas as the insulating and switching dielectric medium. This news follows the United Nations Climate Change Conference COP26 hosted in Glasgow, Scotland last month. The GL312g live tank circuit-breakers will use GE’s game-changing g3 gas insulating and switching technology, which represents an alternative to sulfur hexafluoride SF6, the most commonly used insulator for electrical equipment in substations across the UK. Following an extensive and rigorous tender qualification process, GE secured 80% of the forecasted volume of 145 kV SF6-free live tank circuit-breakers to be supplied to SP Energy Networks under the three-year “High Voltage (HV) Main Plant” framework agreement, which will run until June 2024. The agreement will cover the majority of SP Energy Networks’ 145 kV SF6-free live tank circuit-breaker requirements over the UK’s RIIO-T2 regulatory period. In addition, SP Energy Networks plans to procure other high voltage equipment from GE such as disconnectors at different voltage levels to cater to the needs of the SP Transmission and SP Manweb networks in the UK. GE’s g3 gas-insulated products are currently available for live-tank circuit-breakers and gas-insulated substations up to 145 kV, as well as gas-insulated lines up to 420 kV. More about g3 – GE’s alternative to SF6.