The global small modular reactor market, valued at $3.6 billion in 2025, is projected to reach $15.6 billion by 2035, expanding at a compound annual growth rate of 12.7%.
Rising electricity consumption, energy security priorities, decarbonization targets, and supportive government policies are driving worldwide investment in advanced nuclear power technologies.
Growing demand from digital infrastructure, transportation electrification, and industrial modernization is increasing the need for reliable, dispatchable, and low-carbon electricity sources.
Small modular reactors are gaining strategic importance due to their flexible deployment, reduced land requirements, and ability to add generation capacity in increments aligned with regional demand.
Their deployment can also limit the need for extensive transmission infrastructure upgrades compared with large, centralized power generation projects.
Commercialization prospects are improving as reactor developers advance new designs, governments expand funding programs, and regulators establish frameworks for licensing and deployment.
The retirement of aging fossil fuel and conventional power generation assets is simultaneously creating additional demand for dependable baseload capacity across multiple regions.
The pressurized water reactor segment accounted for 31% of the global market in 2025 and is forecast to register a CAGR of 16.3% through 2035, benefiting from extensive operating experience and proven safety frameworks.
Developers can leverage this established technological foundation when adapting pressurized water reactor systems to compact and modular configurations, helping to strengthen regulatory confidence and support commercial deployment.
The power generation segment represented 80% of the small modular reactor market in 2025 and is anticipated to expand at a CAGR of 16.7% from 2026 to 2035, as utilities, governments, and industrial operators seek stable low-carbon generation.
North America held a 47% share of the global small modular reactor market in 2025 and is expected to grow at a CAGR of 15.1% through 2035, supported by an advanced nuclear regulatory environment and government funding initiatives.
Established partnerships among reactor developers, utilities, engineering companies, and research institutions are further reinforcing North America’s dominant market position and supporting long-term commercial growth.
Leading companies operating in the global small modular reactor market include NuScale Power, TerraPower, Westinghouse Electric Company, GE Hitachi Nuclear Energy, Rolls-Royce SMR Ltd, X-energy, Holtec International, Kairos Power, ARC Clean Technology, and Oklo Inc., among others.
Market participants are investing heavily in advanced reactor research, engineering, testing, licensing, and commercialization, with key strategic priorities including improving reactor safety, expanding modular construction capabilities, and reducing project costs.
Collaborations with governments, utilities, engineering firms, fuel suppliers, and technology partners are supporting project development and creating new commercial opportunities across both domestic and international markets.
