The HV/EHV GIS Market is valued at US$19.59 billion in 2026 and is projected to reach US$34.76 billion by 2036, expanding at 5.9% CAGR.

September 15, 2026 — The global HV/EHV GIS Market is estimated at US$19.59 billion in 2026 and is forecast to reach US$34.76 billion by 2036, registering a 5.9% CAGR, according to Fact.MR. The market is expected to create an absolute dollar opportunity of US$15.17 billion between 2026 and 2036.

The growth outlook is closely linked to grid modernization, transmission capacity expansion, renewable energy integration, and limited space at urban substations. Compact gas insulated switchgear requires significantly less footprint than air insulated alternatives, making GIS relevant for projects where available substation space is restricted.

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HV/EHV GIS Market Gains From Grid Modernization

Grid operators are investing in transmission substations and distribution interconnections as electricity networks undergo modernization. Renewable projects are adding another demand channel, particularly offshore wind and large solar connections that require new grid connection points.

Fact.MR is a market research organization that provides market sizing, forecasting, industry analysis, and competitive assessments across global markets.

The HV/EHV GIS market covers gas insulated switchgear systems, circuit breaker units, busbar systems, and disconnectors used across power transmission substations, generation plants, industrial facilities, and urban infrastructure. The report covers equipment designed for voltage ratings from 72.5 kV to 1200 kV.

Gas insulated switchgear systems account for 54% of product share in 2026, supported by their role as primary high-voltage switching and protection equipment in compact substations. Power transmission systems represent 60% of application value during the same year, making transmission the leading application segment.

Fact.MR's analysis shows why complete GIS assemblies command a large portion of market value. Utilities and project developers favor factory-tested systems that can reduce on-site commissioning time and project risk.

SF6-Free GIS Emerges as a Key Product Trend

The shift toward SF6-free GIS is becoming an important technology trend as environmental regulations increase pressure on sulfur hexafluoride use. Alternative insulating gas mixtures are being developed to provide comparable insulating performance while addressing regulatory concerns around SF6 emissions.

Several major manufacturers have already introduced commercial SF6-free platforms for selected voltage ranges. Fact.MR identifies the development of SF6-free GIS using alternative insulating gases as an opportunity for early adopters seeking regulatory compliance advantages.

Digital GIS is another opportunity area. Integrated monitoring, diagnostics, and predictive maintenance can support recurring service revenue while helping utilities manage equipment throughout its operating lifecycle.

Germany Leads Country-Level Growth

Germany is projected to record a 7.2% CAGR through 2036, the highest growth rate among the country markets highlighted by Fact.MR. Demand is supported by Energiewende grid expansion, urban substation modernization, and Germany's domestic GIS manufacturing capability.

The United States follows with a projected 6.8% CAGR, supported by grid modernization investment, renewable energy connections, and urban substation replacement programs. Japan is projected to expand at 6.4%, while South Korea is expected to register a 6.0% CAGR.

France and the United Kingdom are projected to grow at 5.6% and 5.2%, respectively, through 2036. France's demand is linked to nuclear and renewable energy infrastructure and cross-border interconnection projects, while offshore wind connections support demand in the United Kingdom.

Competition Centers on Technology and Services

The competitive environment includes Siemens AG, ABB Ltd., General Electric, Schneider Electric, Eaton Corporation, Mitsubishi Electric, Toshiba Corporation, Hitachi Ltd., CG Power, and Hyosung Heavy Industries. Product portfolios, technology capabilities, geographic coverage, and after-sales service influence competitive positioning.

An insider-level detail in the Fact.MR assessment is the scale of its research validation: the methodology draws on 100+ secondary sources, benchmarks 50+ company product portfolios, covers 30+ countries, and includes 20+ primary interviews with manufacturers, distributors, end users, and industry specialists.

Shambhu Nath Jha, Principal Consultant at Fact.MR, said, “The HV/EHV GIS market is structurally supported by grid modernization investment and the physical space constraints of urban substations. Replacement of aging air insulated switchgear with GIS installations is a steady demand driver in developed markets.”

Jha added, “Companies that combine reliable GIS hardware with digital monitoring, predictive maintenance, and lifecycle service contracts are positioned to capture both equipment and recurring service revenue.”

About Fact.MR

Fact.MR is a market research and consulting firm providing market intelligence, forecasting, competitive analysis, and industry research across global markets. Its HV/EHV GIS assessment covers market sizing and forecasts from 2026 to 2036 across product type, application, end use, technology, formulation, distribution channel, and regional markets.