GIS · Gas-insulated switchgear
Insulated-enclosure switchgear that packs high-voltage switching into a fraction of the air-insulated footprint, at high cost and some of the longest lead times on a project.
Current numbers
1 Jan 2026EU F-gas ban on putting new F-gas-insulated switchgear into operation: <=24 kV (24-52 kV from 2030; GWP>=1 HV bands from 2028/2032; Art. 13 derogations)
~44 wkaverage MV-class switchgear lead time (Wood Mackenzie Q2 2025); HV breakers and GIS run far longer — see the HV switchgear claim
~1/3GIS footprint vs equivalent AIS lineup — the compactness premium for constrained/hostile sites