Gas Insulated Substation Market Size, Share and Global Trend By Voltage (Medium, High, Very High), By Installation (Indoor, Outdoor), By Application (Power Transmission, Power Distribution, Power Generation, Others) and Regional Forecast, 2026-2034

The global gas insulated substation market size was valued at USD 26.89 billion in 2025. The market is projected to grow from USD 28.56 billion in 2026 to USD 46.27 billion by 2034, exhibiting a CAGR of 6.22% during the forecast period.

The modern era has seen many revolutions in the last couple of decades. Electricity is an integral part of industrial development, and utility companies are striving hard for reliable and economic power transmission and distribution for the future electric power supply. Gas-insulated switchgear is used in the industrial area to fulfill high energy demands by space-saving design with minimum cost.

It is a vital part of a gas-insulated substation (GIS) which provides several advantages over air-insulated substation (AIS) such as up to 98% space reduction in comparison to AIS. Along with this it also offers up to 75% reduction of SF6 volume and delivery of completely sealed and tested bay units up to 245kV. Consistent research and development led to the highly optimized switchgear.

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In GIS system all the active components are enclosed in a metal grounded enclosure, and it is housed in a chamber of full of gas. Gas-insulated substation (GIS) primarily uses sulfur hexafluoride (SF6) as the primary insulator which is nontoxic and offers superior dielectric properties compared to other gas. Due to the massive power demand brought by a growing population and a robust industrial sector, there is a need for the power supply company to embrace efficient methods.

Gas-insulated substation market is segmented into voltage type, installation, and application. Voltage type is further segregated into medium, high, and very high. High voltage gas insulated substation will contribute Installation is classified into indoor and outdoor.

Outdoor installation is expected to grow at the fastest rate owing to its versatile advantages. They are very reliable in transmitting electricity over a long distance in medium and high voltage application. Also, it can sustain in the harsh environmental condition, which is essential for efficient operation.

Massive industrialization and urbanization consistently increased the demand for reliable power supply with a requirement of a compact substation. Gas-insulated substation (GIS) is very compact and require lower operational and maintenance cost.

Several energy-intensive industrial applications are focussing on procuring reliable and efficient substation which expected to increase the growth of the gas insulated substation market.

The installation cost of the GIS is quite high than air-insulated substation, and the use of sulfur hexafluoride (SF6) gas causes GHG emission which expected retard the growth of the gas insulated substation market growth.

Key Players Covered

The notable players in the gas insulated substation are Schneider Electric, Siemens, ABB, E.ON, Mitsubishi Electric, GE Grid Solutions, Alfanar, C&S Electric Ltd., Toshiba Transmission & Distribution Systems Asia Sdn. Bhd. (TTDA), Alstom Grid, Nissin Electric Co.,Ltd, TMEIC, Terasaki Electric (Europe) Ltd., Fuji Electric Corp. of America, and Hyosung Heavy Industries.

SEGMENTATION

Regional Analysis

The gas-insulated substation market is segmented into North America, Europe, Asia Pacific, Latin America, and the Middle East and Africa. Gas-insulated substation market is forecast to gain traction in North America owing to increasing information & communication centers, telecommunication, and processing industries. Europe is investing in enhancing the overall performance of generation, transmission & distribution of electric power to avoid losses. Many companies are procuring their substation for reliable and efficient power transmission, which might add significant value to gas insulated substation market. The Asia Pacific will dominate the gas insulated substation market due to increasing power consumption, up-gradation of aging hydropower plants, government initiative for enhancing grid infrastructure. These factors are expected to offer lucrative growth for the GIS market. The gulf countries are highly dominated by oil and gas companies which require a reliable power supply. Companies operating oil and gas plants are focussing towards enhancing transmission and distribution of electric power. African countries are mainly focussed on increasing their grid infrastructure that will add a positive outlook for the growth of the gas insulated substation market.

Key Industry Developments

• In April 2019, London based engineering firm J. Murphy & Sons Ltd. has secured a contract from National Grid to design and build new electricity substation in Barking, London. The contract is of worth over $31 million which includes designing and building the gas insulated switchgear substation as well as new cables to connect to the national power network.
• In January 2019, A German-based utility company E.ON and the VC Fund Technologies, Berlin to invest in Nuventura’s, a start-up company focussing on the production of gas-insulated switchgear with dry air to offer environmental benefits.
• In November 2018, A contract has been awarded by German grid operator TransnetBW to ABB for an electrical substation up-gradation. Under the $40 million contract, ABB is responsible for the installation of the world’s first 380kV gas-insulated switchgear.