Article

Hitachi, Ltd. will deliver the world's first 550 kV gas-insulated switchgear (GIS) that is completely SF6-free to Chubu Electric Power Grid. This EconiQ technology significantly reduces CO2-equivalent emissions by 99% compared to conventional SF6-insulated GIS.

The adoption aligns with Chubu's 2024 policy to implement SF6-free equipment for various voltage classes, addressing both grid reliability and greenhouse gas reduction amidst increasing electricity demand in Japan. Hitachi Energy introduced its EconiQ high-voltage portfolio in 2021, focusing on eco-efficient alternatives to SF6.