Gas-Insulated Substation Market Report 2026

The gas-insulated substation market size has grown rapidly in recent years. It will grow from $26.81 billion in 2025 to $29.67 billion in 2026 at a compound annual growth rate (CAGR) of 10.6%. The growth in the historic period can be attributed to growth of power transmission and distribution networks, increasing urbanization and industrialization, adoption of gas-insulated substations in space-constrained areas, rise in power generation infrastructure, advancements in high-voltage switchgear technology.

The gas-insulated substation market size is expected to see rapid growth in the next few years. It will grow to $44.15 billion in 2030 at a compound annual growth rate (CAGR) of 10.4%. The growth in the forecast period can be attributed to increasing investments in smart grids, demand for eco-friendly insulation solutions, expansion of renewable energy integration, growth in hvdc and uhv transmission projects, advancements in remote monitoring and predictive maintenance technologies. Major trends in the forecast period include adoption of compact and modular gis designs, integration of advanced monitoring and diagnostic systems, use of eco-friendly sulfur hexafluoride alternatives, expansion of high-voltage gis for urban and industrial applications, development of hvdc and uhv gis solutions.

The rising demand for clean energy is anticipated to drive the growth of the gas-insulated substation market. Clean energy refers to electricity generated from renewable, zero-emission sources that do not pollute the atmosphere during use, as well as energy saved through power efficiency measures. For instance, the 245 kV voltage level is crucial for European high-voltage grid solutions, with SF6-free gas-insulated substations at this voltage being essential for decarbonizing the high-voltage grid. In 2023, a report from the U.S. Energy Information Administration (EIA) noted that utility-scale electricity generation from hydropower in the U.S. reached 240 billion kWh, accounting for 5.7% of the total energy share. Therefore, the increasing demand for clean energy is propelling the growth of the gas-insulated substation market.

Major companies in the gas-insulated substation market are concentrating on developing gas-insulated substations (GIS) that incorporate g3 technology to lower greenhouse gas emissions and minimize the environmental impact of electrical infrastructure. g³ technology is an innovative gas mixture created as an environmentally friendly alternative to sulfur hexafluoride (SF₆), which is commonly used for insulation and switching in GIS. For example, in August 2024, GE Vernova Inc., a US-based company, launched a 245 kV SF6-free gas-insulated substation (GIS). The B105 GIS utilizes g3 gas as a substitute for sulfur hexafluoride (SF₆), which has a global warming potential 24,300 times greater than that of CO2 equivalent emissions compared to SF₆. This makes it a more eco-friendly option. The installation of this GIS is projected to prevent the release of approximately 20,000 tons of CO2 equivalent into the high-voltage grid, supporting RTE’s sustainability objectives.

In January 2023, AcBel Polytech Inc., a company based in Taiwan, acquired ABB's Power Conversion division for $505 million. This acquisition enables AcBel Polytech to enhance its portfolio by integrating ABB's expertise in gas-insulated substations (GIS). ABB Ltd., headquartered in Switzerland, specializes in providing gas-insulated substations (GIS).

Major companies operating in the gas-insulated substation market are ABB Ltd, Siemens Energy AG, General Electric Company, Mitsubishi Electric Corporation, Schneider Electric SE, Toshiba Energy Systems & Solutions Corporation, Hyundai Electric & Energy Systems Co Ltd, Larsen & Toubro Limited, Fuji Electric Co Ltd, CG Power and Industrial Solutions Ltd, Hyosung Heavy Industries Corporation, Hitachi Ltd, Nissin Electric Co Ltd, Eaton Corporation PLC, China XD Group, Shandong Taikai Group Co Ltd, Pinggao Group Co Ltd, Sieyuan Electric Co Ltd, NHVS Co Ltd, Tbea Co Ltd.

Asia-Pacific was the largest region in the gas-insulated substation market share in 2025 and is expected to be the fastest-growing region in the forecast period. The regions covered in the gas-insulated substation market report are Asia-Pacific, South East Asia, Western Europe, Eastern Europe, North America, South America, Middle East, Africa. The countries covered in the gas-insulated substation market report are Australia, Brazil, China, France, Germany, India, Indonesia, Japan, Taiwan, Russia, South Korea, UK, USA, Canada, Italy, Spain.

The gas-insulated substation market consists of sales of regular HV components which include disconnections, CBs, bus bars, voltage, and cutting-edge transducers. Values in this market are ‘factory gate’ values, that is the value of goods sold by the manufacturers or creators of the goods, whether to other entities (including downstream manufacturers, wholesalers, distributors, and retailers) or directly to end customers. The value of goods in this market includes related services sold by the creators of the goods.

The market value is defined as the revenues that enterprises gain from the sale of goods and/or services within the specified market and geography through sales, grants, or donations in terms of the currency (in USD unless otherwise specified).

The revenues for a specified geography are consumption values that are revenues generated by organizations in the specified geography within the market, irrespective of where they are produced. It does not include revenues from resales along the supply chain, either further along the supply chain or as part of other products.

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