Small Modular Reactor Market Size & Share 2026-2035

Small Modular Reactor Market Size

The global small modular reactor (SMR) market was valued at USD 3.6 billion in 2025 and is projected to reach USD 15 billion by 2035, expanding at a CAGR of 12.7% from 2026 to 2035. According to the latest report published by Global Market Insights Inc., market value reaches USD 5.3 billion in 2026. The addressable market includes modular nuclear generation systems and associated deployment activity for power, industrial heat, hydrogen, desalination, research, and remote-energy applications. It excludes conventional large-reactor construction except where established reactor programs provide licensing, supply-chain, or operating benchmarks for modular designs. Growth is moving beyond design announcements toward projects with construction, licensing, utility, and corporate off-take milestones.

Market sizing combines bottom-up assessment of announced reactor programs, capacity, development stages, and likely deployment timing with top-down checks against national nuclear programs, policy support, and end-use demand. The 2025 base year and 2026–2035 forecast period remain constant across reactor type, application, connectivity, location, capacity, end use, and geography.

The approved scope follows Chapters 1–12: methodology and market definitions; executive summary; industry insights; competitive landscape; forecast analysis by reactor type, application, connectivity, location, capacity, end use, and region; and profiles of 20 named companies. Chapter 3 incorporates ecosystem, sourcing, manufacturing capacity, supply-chain resilience, distribution, regulation, Porter’s forces, PESTEL factors, cost and price trends, capacity utilization, AI, digitalization, emerging-market penetration, and investment outlook. Chapter 4 addresses regional share analysis, positioning, developments, and tier benchmarking. Chapters 5–11 retain the 2022–2035 USD billion and MW forecast framework.

Key Drivers

Global electricity demand is rising with data-center construction, vehicle charging, and industrial electrification. The IEA expects data centers to account for 4–6% of global electricity consumption by 2030, compared with approximately 1.5% in 2022. ^{[1]International Energy Agency, “Data Centres and AI,” iea.org} SMRs address a distinct procurement need: carbon-free, dispatchable generation at a scale that can be added progressively. The commercial consequence is strongest where buyers value assured output more than marginal-energy-price optimization.

Public support changes the risk allocation for first commercial plants. U.S. Section 45Y production tax credits can provide up to USD 15/MWh for advanced nuclear output, while the European Commission’s March 2026 SMR Strategy established the European Industrial Alliance on SMRs and targets first European projects in the early 2030s. ^{[2]European Commission, “European SMR Strategy,” ec.europa.eu} Great British Energy – Nuclear selected Rolls-Royce SMR as its preferred technology partner in June 2025. ^{[3]UK Government, “Great British Energy – Nuclear,” gov.uk} Such programs do not eliminate construction risk, but they improve revenue visibility and coordinate domestic supply-chain investment.

Firm-capacity need is equally material. Aging coal and gas generation retirements widen the gap between annual renewable additions and dependable capacity during stressed hours. SMRs in the 50–300-MWe range can be staged against local demand without immediately requiring transmission expansion comparable with a 1,000–1,600-MWe conventional reactor. ^{[4]World Nuclear Association, “Small Nuclear Power Reactors,” world-nuclear.org} Ontario Power Generation’s four-unit BWRX-300 Darlington program, with a CAD 20.9 billion total budget, provides a live test of that incremental-build premise. ^{[5]Canadian Nuclear Safety Commission, “Darlington New Nuclear Project,” cnsc-ccsn.gc.ca}

Industrial decarbonization extends demand beyond electricity. Petrochemicals, cement, steel, and pulp and paper require high-temperature heat that wind and solar do not directly provide. ^{[6]Nuclear Engineering International, “Nuclear Process Heat,” neimagazine.com} HTGR designs can operate at temperatures up to 750°C, and X-energy’s Xe-100 is under construction-permit review for Dow’s Seadrift, Texas, petrochemical site. ^{[7]U.S. Department of Energy, “Advanced Reactor Demonstration Program,” energy.gov} Carbon-border requirements in Europe strengthen the case for industrial exporters to secure low-carbon heat as well as low-carbon power.

Key Restraints

First-of-a-kind capital expenditure remains the immediate commercial constraint. Darlington’s four-unit budget implies a first-unit capital intensity above the level generally associated with combined-cycle gas competitiveness. NuScale’s Carbon Free Power Project cancellation after estimated power pricing rose from USD 58/MWh to USD 89/MWh showed the impact of insufficient off-take certainty on a modular project. ^{[8]OECD Nuclear Energy Agency, “Small Modular Reactors,” oecd-nea.org} The economic case therefore depends on fleet learning, serial procurement, and risk allocation rather than on a single prototype’s capital cost.

Licensing creates a long lead between investment and revenue. The U.S. NRC’s process includes construction-permit and operating-license reviews, while information gaps can lengthen each stage. The 2026 Part 53 framework is intended to accommodate non-light-water and advanced configurations. ^{[9]U.S. Nuclear Regulatory Commission, “Part 53 Regulatory Framework,” nrc.gov} Dedicated pathways should reduce uncertainty over time, yet developers still need complete safety cases, qualified fuel supply, and site-specific approvals before construction revenue can convert into operating cash flow.

Small Modular Reactor Market Segment Analysis

By Reactor Type

PWR designs led with 31% share in 2025 and are forecast to grow at 16.3% CAGR. Their advantage comes from established fuel logistics, safety precedents, and operating experience across the wider nuclear fleet. NuScale’s 77-MWe US460 VOYGR module received NRC Standard Design Approval in May 2025, while CNNC’s 125-MWe ACP100 at Changjiang completed a non-nuclear turbine steam start-up test in December 2024. BWR designs held 28% share and are forecast to grow at 18.6% CAGR, centered on GE Vernova Hitachi’s BWRX-300, which uses standard low-enriched uranium and derives from the ESBWR safety basis.

Fast neutron reactors held 30% share but have the slowest major-type CAGR, 9.7%, because sodium- and lead-cooled designs face longer development and licensing cycles. TerraPower’s Natrium combines sodium cooling with molten-salt thermal storage, while Rosatom’s BREST-OD-300 advances lead-cooled technology at Seversk. HTGR designs held 9.6% share and are forecast to grow at 29% CAGR, supported by China’s commercial HTR-PM and X-energy’s Xe-100 industrial deployment path. Molten salt / FHR systems held 1% share and are forecast to grow at 30.3% CAGR; Kairos Power’s KP-FHR, Terrestrial Energy’s IMSR, and Seaborg’s CMSR address high-temperature and coastal use cases. Other designs, including Oklo’s Aurora and General Atomics’ EM², begin from a 0.4% share but have a 36.3% CAGR from a small base.

By Application

Power generation accounted for 80% of the market in 2025 and is projected to grow at 16.7% CAGR. Utility programs and corporate procurement anchor this segment, including Duke Energy, Ontario Power Generation, and TVA participation in BWRX-300 design development. Technology buyers account for the largest share of tracked committed capacity, reflecting demand for 24/7 carbon-free power. Industrial and process heat held 8% share and is forecast to expand at 23.1% CAGR. A NuScale and Pacific Northwest National Laboratory study validated the 77-MWe module’s ability to deliver process steam while exporting electricity, reinforcing the cogeneration case.

Hydrogen production held 5% share and is forecast to grow at 17.7% CAGR. The OECD Nuclear Energy Agency identifies hydrogen as a priority non-electric application, although competitive pink hydrogen depends on lower reactor capital costs. Desalination and water treatment held 4% share with a 17.7% CAGR, aided by South Korea’s SMART100 approval and Russia’s Akademik Lomonosov operating record. Research / demonstration held 3% share and is forecast to grow at 24.5% CAGR as the IAEA Nuclear Harmonization and Standardization Initiative aligns work across 15 member states. ^{[10]International Atomic Energy Agency, “Nuclear Harmonization and Standardization Initiative,” iaea.org}

By Connectivity

Grid-connected systems form the core commercial market because they serve utility capacity replacement, industrial hubs, and large corporate loads. BWRX-300 activity at Darlington and TVA’s Clinch River application represent the most visible North American grid pathways. Off-grid / remote systems serve a different economic problem: diesel displacement where delivered energy costs are high and grid extension is impractical. Project Pele, Kairos’s Hermes test reactor, and USNC’s 5-MWe MMR illustrate the engineering and regulatory steps needed before remote fleet deployment.

By Location

Land-based projects lead the forecast because current licensing, construction, and utility interconnection processes are designed around fixed sites. Darlington, Kemmerer, Changjiang, Shidaowan, and Seadrift illustrate the importance of industrial-site readiness and established regulatory jurisdictions. Marine-based / floating systems retain relevance for remote coasts, islands, and Arctic operations. Rosatom’s Akademik Lomonosov demonstrates the operating model, while Seaborg’s 100-MWe barge-mounted CMSR targets coastal deployment. Location choice will increasingly shape permitting, logistics, cooling, and off-taker access rather than merely reactor transport.

By Capacity

Below-50-MW systems address remote mining, defense-adjacent, and isolated-load applications where diesel costs can exceed USD 1/kWh. USNC’s MMR and Oklo’s 1.5-MWe Aurora fit this category. The 50–100-MW and 101–300-MW ranges align with modular utility additions and industrial cogeneration; NuScale’s 77-MWe module, X-energy’s 80-MWe Xe-100 module, ARC-100, ACP100, BWRX-300, and AP300 populate these ranges. Above-300-MW projects capture fleet-scale or hybrid configurations, including Rolls-Royce SMR’s 470-MWe design and TerraPower’s 500-MWe peak output capability. Capacity selection remains linked to site demand, financing capacity, and the value of staged construction.

By End Use

Utilities remain the primary end-use group because they control sites, grid interconnection, and long-duration power contracts. Government and state enterprises support early projects through national nuclear programs, defense needs, and sovereign financing. Industrial operators value steam and heat integration, illustrated by Dow’s Seadrift project. Data centers are emerging as a dedicated off-taker category as Amazon invests in X-energy, Google contracts with Kairos Power, and Meta pursues Natrium capacity. Other users include remote mining and water-treatment operators, where fuel-delivery costs and reliability requirements change the economics.

Small Modular Reactor Market Regional Analysis

North America

North America held 47% market share in 2025 and is forecast to grow at 15.1% CAGR. Canada provides the region’s clearest construction signal through the BWRX-300 build at Darlington. In the United States, TVA filed a BWRX-300 construction permit application for Clinch River in May 2025, while TerraPower advances Natrium at Kemmerer. The region’s constraint is not demand but conversion of licensing and corporate interest into repeatable construction programs.

Europe

Europe held 29% share and is forecast to grow at 17.3% CAGR. The UK’s June 2025 Rolls-Royce SMR selection and Sweden’s Videberg Kraft contract support a regional industrial base. Poland’s Generic Design Agreement for BWRX-300 and the March 2026 EU strategy broaden the deployment pipeline. France’s EDF participates in European SMR work, while Romania and Russia remain relevant to the regional nuclear base. Europe’s limiting factor is fragmented national approval, financing, and procurement structures.

Asia Pacific

Asia Pacific held 19% share and is forecast to grow at 20.6% CAGR. China combines the commercial HTR-PM with the ACP100 program and broader reactor approvals. South Korea’s 2026 Nuclear Safety Act revision, Japan’s established nuclear capabilities, and India’s 220-MWe PHWR-based small-reactor plan broaden the region’s technology base. China’s execution scale gives the region its strongest near-term industrial advantage, although national programs remain distinct rather than fully integrated.

Middle East & Africa

Middle East & Africa held 5% share and is forecast to grow at 41.1% CAGR. ENEC and GE Vernova Hitachi signed a May 2025 memorandum to evaluate BWRX-300 deployment under the ADVANCE program. Saudi Arabia’s SNAEP includes SMRs alongside large reactors and uranium exploration, while South Africa represents a potential long-term regional market. The region’s opportunity is strongest where desalination, industrial development, and reliable low-carbon power converge.

Latin America held 4% share and is forecast to grow at 13.6% CAGR. Argentina’s CAREM-25 construction pause for design revision shows the execution risk facing early integral PWR programs. Brazil positions SMR-scale reactors as a long-term complement to its hydroelectric system. Market development will depend on policy continuity, financing capacity, and the ability to connect nuclear investment to industrial and grid-resilience priorities.

Small Modular Reactor Market Share & Competitive Landscape

The 2025 market is moderately concentrated. GE Hitachi Nuclear Energy led with 19.5% share, and the top five companies-GE Hitachi Nuclear Energy, CNNC, TerraPower, Rolls-Royce SMR Ltd, and Rosatom-collectively held approximately 64%. GE Hitachi’s advantage is its parallel licensing and deployment position across Canada, the United States, the UK, and Poland. CNNC’s advantage is operating breadth through HTR-PM and ACP100 activity. TerraPower leads Western sodium-cooled fast-reactor development, Rolls-Royce SMR anchors European factory-built PWR activity, and Rosatom retains the most developed floating-reactor record.

Competitive differentiation is moving toward delivery capability. ARC Clean Technology targets industrial heat with ARC-100. EDF contributes fleet-management experience to European pre-development. General Atomics’ domestic TRISO fuel capability supports advanced-reactor supply resilience. Holtec advances SMR-300 in UK and U.S. pathways, while Huaneng Group expands HTR-PM activity. Moltex, Seaborg, Terrestrial Energy, and ThorCon pursue molten-salt configurations; Kairos advances KP-FHR with Google as an off-taker. NuScale retains regulatory milestones but has repositioned internationally after its 2023 project cancellation. Oklo, USNC, and Westinghouse address microreactor, remote, and standardized PWR opportunities. X-energy’s Xe-100 and Dow project provide the clearest U.S. industrial-cogeneration reference.

Recent Industry Developments

• Jun 2026: The U.S. NRC issued TerraPower a commercial SMR construction permit for Natrium at Kemmerer, Wyoming. The authorization moves a leading non-light-water project from development toward physical reactor construction.

• May 2026: TerraPower signed fleet commercialization agreements with HD Hyundai and Hyundai Engineering & Construction. The agreements strengthen the industrial-delivery pathway needed for repeatable deployment.

• Apr 2026: UAE Ministry of Investment and China’s Jereh Group formalized a clean-energy and industrial-development partnership that includes SMR deployment. The development links reactor interest to industrial policy.

• Feb 2026: Rolls-Royce SMR was selected by Sweden’s Videberg Kraft for a multibillion-pound project. The selection extends the European developer’s contractual reach beyond the UK.