Hitachi receives order for world's first 550 kV SF₆-free GIS from Chubu Electric Power Grid

Hitachi received an order from Chubu Electric Power Grid for Hitachi Energy's EconiQ 550 kV SF₆-free gas-insulated switchgear, the world's first such project. The equipment reduces CO₂-equivalent emissions by 99%.

“Hitachi, Ltd. announced today that it has received an order from Chubu Electric Power Grid for Hitachi Energy’s EconiQ Ⓡ 550 kilovolt (kV) sulfur hexafluoride (SF 6)-free gas-insulated switchgear (GIS).”hitachienergy.com

• 2 sources
• hitachienergy.comHitachi to deliver the world's first 550 kV gas-insulated switchgear in which the entire equipment is SF₆-free to Chubu Electric Power GridMar 12, 2026
• hitachienergy.comHitachi to deliver the world's first 550 kV gas-insulated switchgear in which the entire equipment is SF₆-free to Chubu Electric Power GridMar 12, 2026

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