Global Nuclear Small Modular Reactors Market Size, Share Analysis Report By Reactor Type (Integral Pressurized Water Reactors, High-Temperature Gas-cooled Reactors, Fast Neutron Reactors, Molten Salt Reactors, Others), By Application (Electricity Generation, District Heating, Desalination, Hydrogen Production, Others), By End-User (Power Utilities, Industrial Manufacturing, Residential, Defense, Others) , By Region and Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2026-2035

Report Overview

The Global Nuclear Small Modular Reactors Market size is expected to be worth around USD 14.1 Billion by 2035, from USD 3.5 Billion in 2025, growing at a CAGR of 14.8% during the forecast period from 2026 to 2035. In 2025, Asia-Pacific held a dominant market position, capturing more than a 41.9% share, holding USD 1.4 Million revenue.

Small modular reactors are emerging as a strategic nuclear-power segment, positioned below about 300 MWe per unit and designed for factory fabrication, modular deployment, and shorter construction cycles. The industrial case is strengthening as nuclear generation from nearly 420 reactors was expected by the IEA to reach an all-time high in 2025, supporting SMRs as a reliable, low-carbon option for grids, data centers, heavy industry, and remote power users.

• The IAEA states that more than 80 SMR designs and concepts are under development globally, while the OECD-NEA’s 2025 dashboard identified 127 SMR technologies, showing rapid technology diversification.

The current industrial scenario is led by regulated, government-backed commercialization rather than speculative deployment. In the U.S., NuScale Power’s module received U.S. NRC Standard Design Approval in May 2025 for its 77 MWe design, while each module can deliver about 250 MWth gross and be scaled up to 924 MWe in a 12-module plant configuration. Government support is a major catalyst: the U.S. Department of Energy reissued a US$900 million Gen III+ SMR solicitation in March 2025, and the European Industrial Alliance on SMRs now includes more than 350 stakeholders with a 2025–2029 action plan.

Key driving factors include energy security, grid reliability, industrial decarbonization, and rising electricity demand from AI and data infrastructure. Government support is central: the U.S. Department of Energy reissued a US$900 million Gen III+ SMR solicitation in March 2025, while the U.K. allocated £2.6 billion in the 2025 Spending Review for the Rolls-Royce SMR contract and wider delivery program. The U.S. Department of Energy announced in December 2025 selections under a $900 million SMR deployment programme, including up to $400 million for TVA and up to $400 million for Holtec projects.

Government initiatives are strengthening the opportunity pipeline. The European Commission launched the European Industrial Alliance on SMRs in February 2024 to accelerate first European SMR projects by the early 2030s, attracting more than 300 applications. The U.S. DOE previously approved up to $1.4 billion for NuScale’s former demonstration pathway, while newer U.S. funding continues to support advanced reactor deployment.

A major 2025 development was NuScale’s support for ENTRA1 Energy and Tennessee Valley Authority’s plan to deploy up to 6 GW of NuScale SMR capacity across TVA’s seven-state service region, described by the company as the largest SMR deployment program in U.S. history. In the U.K., Rolls-Royce SMR became a leading industrial platform after being selected in June 2025 as the preferred bidder for Great British Energy–Nuclear’s SMR program. Its plant design is positioned at about 470 MW, and the U.K. government later referenced up to three initial units at Wylfa, with potential for up to eight units subject to future decisions.

Key Takeaways

• Nuclear Small Modular Reactors Market size is expected to be worth around USD 14.1 Billion by 2035, from USD 3.5 Billion in 2025, growing at a CAGR of 14.8%.
• Integral Pressurized Water Reactors (iPWR) held a dominant market position, capturing more than a 59.2% share.
• Electricity Generation held a dominant market position, capturing more than a 61.3% share.
• Power Generation held a dominant market position, capturing more than a 58.7% share.
• Asia-Pacific held a dominant position in the Nuclear Small Modular Reactors market, accounting for 39.1% of the global market share and reaching a market value of nearly USD 81.2 million.

By Reactor Type Analysis

Integral Pressurized Water Reactors (iPWR) lead with 59.2% share due to their advanced safety systems and simplified reactor design.

In 2025, Integral Pressurized Water Reactors (iPWR) held a dominant market position, capturing more than a 59.2% share. The segment gained strong industry preference because of its compact structure, improved operational safety, and lower maintenance complexity compared to conventional reactor technologies. iPWR systems combine major reactor components such as steam generators and pressurizers into a single pressure vessel, helping reduce piping requirements and lowering the risk of coolant leakage. This integrated design became one of the key reasons behind increasing adoption across utility and industrial energy projects during 2025.

By Application Analysis

Electricity Generation leads with 61.3% share driven by rising demand for stable and low-carbon power supply.

In 2025, Electricity Generation held a dominant market position, capturing more than a 61.3% share. The segment remained the primary application area for Nuclear Small Modular Reactors as countries continued focusing on clean and reliable energy production. Increasing electricity demand from urban development, industrial expansion, and digital infrastructure pushed governments and utilities to invest in dependable baseload power solutions. SMRs became an attractive option because they can generate continuous electricity with lower emissions while requiring less land and smaller infrastructure compared to traditional nuclear plants.

By End-User Analysis

Power Generation leads with 58.7% share as utilities focus on reliable and low-emission energy production.

In 2025, Power Generation held a dominant market position, capturing more than a 58.7% share. The segment remained the largest end-user category in the Nuclear Small Modular Reactors market as power utilities increased investments in dependable and carbon-free electricity generation technologies. Growing electricity demand from expanding urban populations, industrial activities, and digital infrastructure pushed utilities to adopt advanced energy systems capable of delivering continuous power with lower environmental impact.

Key Market Segments

By Reactor Type

• Integral Pressurized Water Reactors (iPWR)
• High-Temperature Gas-cooled Reactors (HTGR)
• Fast Neutron Reactors (FNR)
• Molten Salt Reactors (MSR)
• Others

By Application

• Electricity Generation
• District Heating
• Desalination
• Hydrogen Production
• Others

By End-User

• Power Utilities
• Industrial Manufacturing
• Residential
• Defense
• Others

Emerging Trends

AI Data Centers are Emerging as the Biggest Trend in the SMR Market

One of the latest trends shaping the Nuclear Small Modular Reactors market is the growing partnership between technology companies and nuclear energy developers to power AI-driven data centers. The rapid expansion of artificial intelligence, cloud computing, and digital storage systems is creating huge electricity demand worldwide. As a result, many technology firms are now looking for clean and uninterrupted power sources that can operate continuously without depending on weather conditions. SMRs are becoming a preferred option because they can provide stable low-carbon electricity near data center locations.

According to the International Energy Agency (IEA), electricity demand from data centers increased by 17% in 2025, while AI-focused data center demand grew even faster. The agency also projected that global data center electricity consumption could rise from 485 TWh in 2025 to around 950 TWh by 2030. This sharp increase is pushing major companies to explore SMRs as long-term energy solutions. Technology firms are already entering agreements with SMR developers. Google confirmed plans to support multiple SMR projects through its partnership with Kairos Power, targeting up to 500 MW of clean energy generation for future operations.

Factory-Built and Modular Reactor Designs are Accelerating Industry Interest

Another important trend in the Nuclear Small Modular Reactors market is the increasing focus on factory-built modular reactor systems. Unlike traditional nuclear plants that require large on-site construction activities over many years, SMRs are designed to be manufactured in modules and assembled more efficiently at project locations. This approach is helping reduce construction timelines, improve cost control, and simplify deployment in smaller electricity grids and industrial areas.

The International Energy Agency reported that modular SMR designs can significantly reduce construction risks and improve project scalability. The agency stated that under supportive policy conditions, global SMR capacity could reach 120 GW by 2050 with more than 1,000 SMRs potentially operating worldwide. Governments in countries such as the United States, Canada, and the United Kingdom are actively supporting modular reactor development through licensing reforms and funding programs.

Drivers

Rising Global Electricity Demand is Driving SMR Adoption

One of the biggest driving factors for the Nuclear Small Modular Reactors market is the rapid increase in global electricity demand along with the need for cleaner energy production. Countries are under pressure to reduce carbon emissions while still maintaining stable electricity supply for industries, households, transportation systems, and digital infrastructure. Small Modular Reactors are gaining attention because they can provide continuous low-carbon electricity without depending on weather conditions like solar and wind energy.

• According to the International Atomic Energy Agency (IAEA), nuclear power currently provides nearly 10% of the world’s electricity through more than 419 operating reactors globally. The agency also stated that global nuclear power capacity could increase by 2.5 times by 2050 due to rising energy demand and clean energy transition targets.

The International Energy Agency (IEA) further highlighted that global electricity demand is expected to continue growing strongly because of electric vehicles, industrial electrification, and the expansion of AI-powered data centers. This growing pressure on electricity systems is creating strong demand for dependable power generation technologies such as SMRs.

Government Investments and Energy Security Programs Supporting SMRs

Government funding and long-term nuclear energy policies are also playing a major role in accelerating the Nuclear Small Modular Reactors market. Several countries are increasing investments in SMR research, licensing, and deployment to strengthen energy security and reduce dependence on fossil fuel imports. Compared to traditional nuclear plants, SMRs are viewed as more flexible, faster to deploy, and suitable for smaller electricity grids and remote industrial areas.

In 2025, the U.K. government announced a £2.5 billion investment program to support the development of small modular reactors as part of its clean energy strategy. The initiative is expected to support domestic nuclear manufacturing and improve long-term electricity reliability. Meanwhile, the U.S. government opened applications for up to US$900 million in funding to support early SMR deployment projects and strengthen carbon-free electricity generation.

Restraints

High Initial Investment and Project Costs are Limiting SMR Expansion

One of the major restraining factors for the Nuclear Small Modular Reactors market is the high upfront investment required for reactor development, licensing, and infrastructure construction. Although SMRs are smaller than traditional nuclear plants, they still involve complex engineering, strict safety systems, and long regulatory approval processes. Many countries and private investors remain cautious because the commercial deployment of SMRs is still in its early stage, making financing more difficult compared to established renewable technologies such as solar and wind.

According to the International Energy Agency (IEA), nuclear power projects often face high capital costs due to safety requirements, construction complexity, and long project timelines. The agency noted that financing costs can account for up to 50% of the total electricity cost of nuclear projects in some markets. These financial risks create uncertainty for utilities planning new SMR installations.

Regulatory Delays and Licensing Challenges Slowing Market Growth

Another key challenge for the Nuclear Small Modular Reactors market is the lengthy regulatory and licensing process required before reactors can begin operation. Nuclear energy projects must meet strict safety, environmental, and operational standards established by national and international authorities. While these regulations are important for public safety, they often increase project timelines and delay commercial deployment.

Governments are trying to address this issue through new policy initiatives. For example, Canada introduced an SMR Action Plan to support regulatory coordination and accelerate reactor deployment. However, commercial-scale implementation still requires extensive review and infrastructure readiness. . Delays in approvals can increase project costs and discourage private sector participation, especially when competing energy technologies can be installed much faster. These regulatory barriers continue to remain one of the biggest obstacles for large-scale SMR adoption worldwide.

Opportunity

Rising AI Data Centers and Digital Infrastructure Creating New Opportunities for SMRs

One of the biggest growth opportunities for the Nuclear Small Modular Reactors market is the sharp rise in electricity demand from AI-powered data centers and digital infrastructure. Around the world, technology companies are searching for reliable and carbon-free energy sources capable of supporting nonstop computing operations. Small Modular Reactors are increasingly seen as a strong solution because they can provide stable electricity for long periods without the interruptions linked to weather-dependent renewable energy sources.

According to the International Energy Agency (IEA), electricity demand from data centers globally grew by 17% in 2025, while AI-focused data center electricity consumption surged by nearly 50% during the same year. The IEA also noted that technology companies have already announced plans to finance more than 20 GW of SMR capacity to support future energy needs.

Growing Demand for Clean Power in Remote and Industrial Areas Expanding SMR Potential

Another major growth opportunity for the Nuclear Small Modular Reactors market comes from increasing demand for reliable electricity in remote locations, industrial zones, mining operations, and small grid networks. Many regions still face challenges related to unstable electricity supply and dependence on diesel generators or coal-based power systems.

The International Atomic Energy Agency (IAEA) states that SMRs are designed to generate up to 300 MW(e) per unit and are suitable for remote regions and smaller electricity grids. Their modular structure allows faster installation and phased expansion based on local electricity demand. Industries such as mining, desalination, oil refining, and heavy manufacturing are also exploring SMRs for clean heat and electricity generation.

Regional Insights

Asia-Pacific Dominates the Nuclear Small Modular Reactors Market with 39.1% Share Driven by Strong Nuclear Expansion Programs

Asia-Pacific held a dominant position in the Nuclear Small Modular Reactors market, accounting for 39.1% of the global market share and reaching a market value of nearly USD 81.2 million. The region has become the leading hub for SMR development due to rising electricity demand, rapid industrialization, and strong government support for clean energy infrastructure.

China continues to lead regional nuclear expansion with one of the world’s largest reactor construction pipelines. According to industry reports, China has more than 30 reactors under construction and is aggressively investing in next-generation SMR technologies for industrial power supply and remote electricity generation. India is also emerging as a major contributor to regional growth. The government recently announced plans to expand nuclear energy capacity from around 8 GW to nearly 100 GW by 2047, with SMRs expected to play an important role in future deployment strategies.

Key Regions and Countries Insights

• North America
  • US
  • Canada
• Europe
  • Germany
  • France
  • The UK
  • Spain
  • Italy
  • Rest of Europe
• Asia Pacific
  • China
  • Japan
  • South Korea
  • India
  • Australia
  • Rest of APAC
• Latin America
  • Brazil
  • Mexico
  • Rest of Latin America
• Middle East & Africa
  • GCC
  • South Africa
  • Rest of MEA

Key Players Analysis

NuScale Power is one of the leading companies in the Nuclear Small Modular Reactors market, focusing on scalable reactor technology for clean electricity generation. The company’s VOYGR SMR plant design can generate up to 924 MWe using 12 reactor modules, with each module capable of producing around 77 MWe. In 2025, NuScale continued expanding partnerships with utilities and industrial operators for carbon-free energy projects. The company also received significant support from the U.S. Department of Energy for reactor commercialization and licensing activities, strengthening its position in the advanced nuclear energy sector.

Rolls-Royce SMR is a major player developing compact nuclear reactors for low-carbon electricity generation and industrial applications. The company’s SMR design is expected to deliver around 470 MWe per unit and support electricity supply for nearly one million homes. In 2025, the company secured strong backing from the U.K. government under its clean energy expansion strategy. Rolls-Royce SMR estimates that factory-based modular manufacturing could reduce construction timelines by nearly 30% compared to conventional nuclear plants, helping accelerate deployment across Europe and other global markets.

Westinghouse Electric Company remains a strong participant in the SMR market through its AP300 small modular reactor platform. The AP300 reactor is designed to generate approximately 300 MWe and is based on the company’s larger AP1000 reactor technology. In 2026, Westinghouse continued expanding international partnerships for SMR deployment in Europe, North America, and Asia-Pacific. The company is focusing heavily on grid stability, industrial energy supply, and decarbonization projects.

Top Key Players Outlook

• NuScale Power
• Rolls-Royce SMR
• Westinghouse Electric Company
• GE Hitachi Nuclear Energy
• Holtec International
• TerraPower
• X-energy
• Kairos Power
• BWX Technologies/BWXT
• CNNC/CGN
• KHNP/KAERI
• Oklo

Recent Industry Developments

In 2025, NuScale Power received U.S. NRC Standard Design Approval for its uprated 77 MWe SMR design, replacing the earlier 50 MWe version and improving project economics. NuScale also supported ENTRA1 Energy’s position to receive up to US$25 billion under the U.S.-Japan framework agreement for large-scale power infrastructure deployment. In 2026, NuScale reported around US$1 billion in liquidity and expanded its supply-chain partnership with Framatome to support faster fuel delivery across the U.S. and Europe.

In 2025, Holtec International advanced its Nuclear Small Modular Reactors work through its SMR-300 platform, designed to produce around 300 MWe of electric power and 1,050 MWt for process heat use. The company signed an agreement with Hyundai Engineering & Construction to build 2 SMR-300 reactors at the Palisades site in Michigan, with a wider plan to develop a 10 GW SMR fleet across North America in the 2030s.

Report Scope