Small Modular Reactor Market Size, Share, and Trends 2026 to 2035

Revenue, 2025

USD 7.49 Bn

Forecast Year, 2035

USD 17.37 Bn

CAGR, 2026 - 2035

8.78%

Report Coverage

Global

What is the Small Modular Reactor Market Size?

The global small modular reactor market size is calculated at USD 7.49 billion in 2025 and is predicted to increase from USD 8.16 billion in 2026 to approximately USD 17.37 billion by 2035, expanding at a CAGR of 8.78% from 2026 to 2035.

Market Highlights

• Asia-Pacific led the global market with the highest market share of 80% in 2025.
• By Reactor Type, the heavy water reactors segment dominated the market in 2025.
• By Application, the power generation segment dominated the market in 2025.

Market Size and Forecast

• Market Size in 2025: USD 7.49 Billion
• Market Size in 2026: USD 8.16 Billion
• Forecasted Market Size by 2035: USD 17.37Billion
• CAGR (2026-2035): 8.78%
• Largest Market in 2024: Asia Pacific

Market Overview

Small modular reactors (SMRs) are gaining interest as a potential solution to reduce the capital costs of nuclear power plants and provide power to small grid systems. The construction of prototypes such as CAREM-25 in Argentina and KLT40S in the Russian Federation and the progress of other designs indicate that SMRs are becoming a more viable option for nuclear power generation .

To assess the potential market for SMRs in the short to medium term, the Nuclear Energy Agency (NEA) is collecting and analyzing economic and market data, including factory production cost estimates. This project will provide a better understanding of the economic viability of SMRs and help inform decision-makers on the role of SMRs in the future of nuclear power generation.

It is worth noting that SMRs face several challenges, including regulatory hurdles and the need for significant investment in research and development. However, if these challenges can be overcome, SMRs could play a significant role in meeting the growing demand for energy while reducing greenhouse gas emissions.

Growing global electricity demand and the flexibility of SMRs in terms of size and power output are some factors driving the global small modular reactor market. The older generation of nuclear power plants is extensive and requires significant capital and building time. Atomic reactors are challenging to install in areas far from large power grid systems . As a result, setting up a nuclear reactor in remote locations is not feasible, paving the way for developing smaller atomic reactors. With a greater emphasis on achieving political and technological solutions to climate change, many experts worldwide highlight nuclear reactors' virtually emissions-free power.

In August 2022 the DOE's Nuclear Energy University Program approved funds to Core Power, the MIT Energy Initiative, and Idaho National Laboratory (INL) to research the economic and environmental benefits of floating advanced nuclear power generation.

Market Trends

• The rapid growth of generative AI is transforming industries by automating tasks, enhancing creativity, and introducing new risks and opportunities.
• The rising focus on sustainability, with a commitment to net-zero carbon emissions and transparent reporting drives the growth of the market.
• The widespread adoption of 5G technology is enabling advancements in connected devices, smart cities, and real-time data processing, particularly impacting manufacturing and healthcare sectors.

Market Scope

Market Dynamics

Drivers

Increasing electricity demand

Increasing residential and industrial electricity usage encourages governments to prioritize sustainable power over conventional power generation to reduce their carbon footprint. Furthermore, the increasing electrification of connected devices, transportation, and other critical services is increasing the demand for more power, increasing the demand for tiny modular reactors emitting less carbon. For instance, according to world energy & Climate statistics, global energy consumption shows 5% growth in 2021, After a 4.5% decline in 2020.

The growing interest in developing renewable energy sources is expected to open significant industry opportunities. Furthermore, governments worldwide are aware of the deteriorating environmental balance and are taking necessary steps to restore it, including imposing strict limits on hazardous emissions. As a result of these regulations, new investors are flocking to compact modular reactors. Aside from that, the capital needed to construct a small modular reactor facility is less than that required to build a traditional nuclear facility. Small modular reactors necessitate less construction, which reduces investment costs.

Challenges

Regulatory barriers

The first and most significant challenge is the presence of regulatory barriers. Many SMR designs include novel features such as enhanced passive safety systems and multi-modular deployment (i.e., multiple reactor modules on the same site or pool). NuScale, for example). The SMR vendors argue that these features could reduce operational staffing requirements (see discussion in Rothwell, 2016: 168) and the size of emergency planning zones due to the application of regulations. As for any NPP, the safety and security requirements for SMR are precise, but the question is how SMR will demonstrate that they can meet those requirements. Regulators and technical support organizations will also require time to decide on these options and innovations, which may cause delays.

Opportunities

Reduction of carbon dioxide emissions into the atmosphere

SMRs have the potential to significantly reduce greenhouse gas emissions. They could provide an alternative baseload power source, allowing the retirement of older, smaller, and less efficient coal-fired power plants that would otherwise not be suitable for retrofitting with carbon capture and storage technology. They could be used in the U.S. and the world where other carbon-free energy sources, such as solar and wind, are scarce. There could be technical or commercial constraints, such as expected energy demand growth and transmission capacity, allowing SMRs but not GW-scale LWRs to be installed. The manufacturing base required for SMRs can be established domestically, which is critical for onshore production.

Segments Insights

Reactor Type Insights

Based on the reactor type, heavy water reactors dominated the market. The heavy water reactors are significantly more expensive than ordinary light water, it provides improved substantially neutron economy, allowing the reactor to operate without fuel enrichment facilities (offsetting the additional expense of the heavy water) and improving the reactor's ability to use alternate fuel cycles. Furthermore, heavy water reactors regulate their isotopic purity for optimal reactor physics performance. For example, increasing the isotopic purity of heavy water improves fuel economy and reduces waste generation. This can be accomplished by minimizing light water ingress into heavy water systems and maximizing the purity of recovered water before it is returned to the reactor. p in controlling isotopic purity to achieve optimal reactor physics performance.

Application Insights

Based on application, the power generation segment dominated the small modular market in 2025 and is expected to continue to lead during the forecast period. On the other hand, the desalination segment is the second fastest-growing market owing to the increasing demand for potable water in semi-arid and arid zones.

Small molecular reactors are used for nuclear desalination, and where portable water is produced from seawater in the facility. Desalination plants are designed to make portable water or used as co-generation atomic power plants to generate electricity.

Regional Insights

What is the Asia Pacific Small Modular Reactor Market Size?

The Asia Pacific small modular reactor market size was estimated at USD 5.99 billion in 2025 and is predicted to be worth around USD 13.89 billion by 2035, at a CAGR of 8.77% from 2026 to 2035.

Asia Pacific is dominating thesmall modular reactor market and is expected to grow in the forecast period

China is highly active in the field of SMRs, with many designs, competition among various manufacturers, and many projects in the planning and construction stages. China is interested in using SMRs for multiple applications, including electricity generation, process, and district heating. China funds several research, development, and demonstration programs for advanced reactors, including Generation III and IV, for commercial and sustainable development.

Nuclear power has grown dramatically in China over the last decade because of political decisions to promote technology. The potential market for SMRs is significant within China. How well this translates to the export potential for the SMR designs remains to be seen, as the only Chinese NPP built outside of China is in Pakistan. Various regulatory and other issues could act as roadblocks.

Nowadays, Interest in SMRs has been steadily increasing, but this interest has yet to be translated into many projects. SMR deployment plans are apparent in the United States, Canada, the United Kingdom, China, and Russia. When contemplating deploying new SMR designs, the FOAK plants become significant for the future, as they can be viewed as demonstration plants in some cases, particularly for non-LWR structures. With clear, national-level interest in the project, the number of actors willing to take a risk on a FOAK SMR is unlimited. Government such as US and UK have signalled their interest in supporting a new build and then exporting the technology. Without this level of support, It is presumable that many designs will die in innovation valley death.

U.S. has provided larger-scale support for SMRs since 2012 when the Department of Energy (DOE) allocated USD 450 million to develop an advanced US-based LWR. Initially, the B&W mPower design was given permission, which was later shelved. The DOE has supported a variety of plant designs, but the NuScale 60 MWe SMR is currently the design with the most funding behind it. NuScale is presently undergoing NRC design certification, which is expected to be completed by 2022. The first fully commercial 12-module and 720 MWe plants are expected to come online by 2027 at DOE's Idaho National Laboratory site.

What are the Advancements in the Small Modular Reactor Industry in Europe?

Europe is expected to witness significant growth in the market. This growth is fueled by the region's stringent climate goals and the high need for energy security. Countries like Germany, the UK, and France are leading players as they benefit from robust regulatory bodies that are actively promoting SMR development as part of their energy transition strategies. The European Commission has also emphasized the importance of nuclear energy in achieving carbon neutrality by the year 2050, creating a fertile environment for market development.

The UK government announced a grant of £210 million to Rolls-Royce SMR to match private investment in this venture in 2021. Rolls-Royce Group, BNF Resources UK, and Exelon Generation will each invest £195 million in it over the next three years. According to Rolls-Royce, the SMR business will now "proceed rapidly with a range of parallel delivery activities, including entry into the UK generic design assessment (GDA) process and identifying sites for the factories that will manufacture the modules that enable onsite assembly of the power plants." The reactor is intended to produce hydrogen and synthetic fuels , as well as the generation of electricity. In addition, Rolls-Royce announced in November 2022 that it had identified four priority locations in the UK for the construction of SMR-based power stations, including Trawsfynydd, Wylfa, and Old bury. All of the sites are on land owned by the UK Nuclear Decommissioning Authority (NDA). Before the NDA commits to SMR development, the Department of Business, Energy, and Industrial Strategy must first approve it.

What are the Key Trends in the Small Modular Reactor Industry in Latin America?

Latin America is expected to witness substantial growth in the upcoming years. This growth is driven by rising energy demands, urbanization, and the increasing shift towards low-carbon energy sources. Countries like Brazil and Mexico are leading players as they are seen investing heavily in SMR technology, further supported by government initiatives that are aimed at enhancing energy security and reducing greenhouse gas emissions. The regulatory landscape seems to be evolving steadily, with a focus on safety and sustainability.

Brazil Small Modular Reactor Market Trends: The country is witnessing high levels of collaborations between public and private sectors, which thus helps in fostering technological advancements. As the region continues to prioritize nuclear energy, the potential for market expansion in SMRs is expected to be quite substantial.

How is the Middle East and Africa Region Growing in the Small Modular Reactor industry?

The Middle East and Africa region is expected to witness gradual but steady growth in the market. This growth and development is driven by increasing energy demands and the rising need for sustainable energy solutions. Countries like the UAE, Saudi Arabia, and South Africa are players, with significant investments being made in nuclear energy as part of their long-term energy strategies. The regulatory environment is also becoming more favorable, with governments recognizing the role of nuclear energy in achieving energy security and sustainability.

Saudi Arabia Small Modular Reactor Market Trends: Key companies in the region are beginning to emerge, and there is a growing interest in SMR technology as a viable solution for energy challenges. As the region continues to explore nuclear options, the potential for growth in the SMR market seems to be promising, opening up several opportunities for market development.

Small Modular Reactor MarketCompanies

• ARC Energy LLC
• China National Nuclear Corporation
• Fluor Corporation
• GE Hitachi Nuclear Energy
• Holtec International
• IHI Corporation
• Leadcold Reactors AB
• Mitsubishi Power Ltd.
• Moltex Energy Ltd.
• NuScale Power
• LLC.
• OKBM Afrikantov
• Rolls-Royce plc
• SNC-Lavalin Group

Segments Covered in the Report

By Reactor Type

• Heavy water Reactor (HWR)
• Light water Reactor (LWR)
• Fast neutron Reactor (FNR)

By Application

• Desalination
• Power Generation
• Process Heat

By Region

• North America
• Europe
• Asia-Pacific
• Latin America
• Middle East and Africa