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Gas Insulated Switchgear (GIS) using an environmentally sound natural origin gas AEROXIA™

  • Environment
  • Climate Change
  • Activities in Products

Toshiba Energy Systems & Solutions Corporation

Generally, a gas insulated switchgear (GIS) installed in power plants and substations uses SF6 gas, which has high insulation performance as the insulation medium. However, this gas has 25,200 times higher global warming potential (GWP)*1 than CO2 gas and so environmental regulations for SF6 gas used for power generation are taking shape mainly in Europe and North America.
Given this situation, the sale of new products that use high GWP gases, such as SF6 gas, will be prohibited under certain conditions. Even for a GIS that uses SF6 gas, regulations will be phased in from 2028 depending on the rated voltage*2, so demand for GIS using natural origin gas is expected to increase even more.
In anticipation of these circumstances, for over 15 years Toshiba Energy Systems & Solutions Corporation has been conducting research and development of a switchgear using a natural origin gas that is very safe and does not impact global warming when leaked. The Company delivered Japan’s first*3 GIS*4 for power companies using a natural origin gas. Going forward, Toshiba Energy Systems & Solutions Corporation will continue to actively engage in the development of a higher voltage, higher capacity GIS using an environmentally sound natural origin gas.

  • A figure that represents the capacity of non-carbon dioxide greenhouse gases to contribute to global warming using carbon dioxide as the reference. (GWP:Global Warming Potential) , the figures are from the IPCC Assessment Report 6 (2023). 
  • Regulation (EU) No 517/2014 on fluorinated greenhouse gases
  • Survey by Toshiba Corporation (as of July 12, 2022)
  • 72 kV GIS for TEPCO Power Grid

Gas insulated switchgear (GIS) for 72 kV/84 kV using a natural origin gas