Nuclear Reactor Construction Market - Global Industry Size, Share, Trends, Opportunity, and Forecast, 2021-2031F

Advanced Reactors is the fastest growing sector, North America is the largest market

The global nuclear reactor construction market is projected to expand from USD 54.72 billion in 2025 to USD 65.41 billion by 2031, demonstrating a compound annual growth rate (CAGR) of 3.02%. This market involves the full spectrum of engineering, procurement, and construction activities for facilities that generate electricity via controlled nuclear fission. Its core impetus stems from the urgent global need for low-carbon baseload power, essential for meeting rigorous decarbonization targets and international climate agreements. Furthermore, countries are increasingly investing in nuclear infrastructure to enhance energy security and reduce geopolitical vulnerabilities tied to fossil fuels, thus ensuring a robust and varied national energy supply.

As of 2025, the World Nuclear Association reported 70 nuclear reactors under construction globally, indicating a consistent push for increased capacity, particularly within Asian markets. Despite this expansion, the industry faces considerable obstacles, notably the high upfront capital costs and extended timelines for project development, which introduce significant financial risks and can hinder the swift implementation of new ventures.

Market Drivers

A significant driver for new nuclear reactor construction is the escalating power demand from artificial intelligence and hyperscale data centers. Technology companies are actively pursuing carbon-free baseload power to operate their energy-intensive computational infrastructures and achieve sustainability objectives. This demand has spurred direct collaborations between hyperscale companies and nuclear energy developers. For instance, Amazon Web Services announced in October 2024, as part of its 'Amazon and X-energy Partnership Announcement', its commitment to lead a Series C-1 financing round with an investment of approximately $500 million to advance the development of advanced nuclear projects. These substantial capital infusions provide crucial financial stability, enabling reactor designs to progress toward physical construction.

Long-term market growth is further bolstered by global commitments to achieve net-zero carbon emissions and mitigate climate change. Governments are re-evaluating energy policies, increasingly recognizing nuclear power as a vital element of the clean energy transition. The International Atomic Energy Agency's 'Energy, Electricity and Nuclear Power Estimates for the Period up to 2050' (September 2024) indicates a high-case projection where global nuclear generating capacity could reach 950 gigawatts by 2050. This optimistic forecast translates into tangible project approvals in rapidly expanding regions; for example, Reuters reported in 2024 that China's State Council approved five new nuclear projects comprising 11 reactors, representing an estimated total investment of approximately 220 billion yuan. Such strategic governmental endorsements clearly illustrate how national directives stimulate infrastructure development.

Market Challenges

A major impediment to the expansion of the Global Nuclear Reactor Construction Market is the substantial financial strain imposed by extremely high upfront capital expenditures and extended project development schedules. Unlike renewable energy installations, which often employ modular designs, nuclear facilities demand enormous initial investments that must be secured many years prior to any revenue generation. This exposes investors to considerable risks related to interest accumulation and liquidity. The capital-intensive nature of these projects establishes a high entry barrier, frequently discouraging private sector involvement and making projects reliant on intricate, often unpredictable, government financing schemes or loan guarantees.

This economic pressure is clearly evident in recent project performance data, which underscore the risks that deter investment. The International Energy Agency reported in 2025 that new nuclear projects in advanced economies typically encountered construction delays averaging about eight years, with final costs escalating to nearly 2.5 times the original budget estimates. Such pronounced cost overruns and scheduling setbacks significantly diminish nuclear power's commercial viability when compared to other baseload energy sources, leading utilities to reconsider commitments to new developments and directly hindering the overall pace of market growth.

Market Trends

The market is being transformed by the commercialization of Small Modular Reactor (SMR) designs, which provide scalable options distinct from conventional large-scale infrastructure. Unlike gigawatt-class plants that demand customized on-site engineering, SMRs leverage standardized designs for factory manufacturing, thereby significantly reducing installation risks and initial capital expenses.

This shift is increasingly apparent in national procurement approaches, evolving from preliminary feasibility studies to definitive deployment contracts. For instance, the American Nuclear Society reported in June 2025 that, in the 'U.K.'s own Rolls-Royce wins SMR competition', the government pledged over £2.5 billion to the program and chose the domestic firm as the preferred bidder for delivering the nation's inaugural fleet of modular units. Such investments generate crucial market signals, stimulating supply chains and facilitating the progression of designs to physical construction.

Simultaneously, the conversion of decommissioned coal infrastructure for nuclear plant siting is emerging as a strategic means to enhance project economics. Developers are favoring brownfield locations to capitalize on existing high-voltage transmission lines, water rights for cooling, and experienced local workforces, which effectively mitigates the considerable costs associated with developing greenfield sites.

This strategy also aligns with regulatory frameworks aimed at simplifying the permitting process for projects that substitute fossil fuel generation capacity. As reported by the American Nuclear Society in December 2025, regarding the 'NRC completes safety review for TerraPower's Kemmerer project', the developer confirmed its plan to commence commercial operation of its 345-megawatt reactor, located near a Wyoming coal facility, by 2031. This integration of advanced nuclear technology with existing energy assets not only accelerates capacity expansion but also contributes to the revitalization of industrial communities.

Key Market Players

• GE-Hitachi Nuclear Energy, Inc.
• Westinghouse Electric Company LLC
• KEPCO Engineering & Construction Inc.
• SKODA JS a.s.
• China National Nuclear Corporation
• Bilfinger SE
• Larsen & Toubro Limited
• Doosan Corporation

Report Scope

In this report, the Global Nuclear Reactor Construction Market has been segmented into the following categories, in addition to the industry trends which have also been detailed below:

Nuclear Reactor Construction Market, by Reactor Type:

• Pressurized Water Reactors
• Boiling Water Reactors
• Advanced Reactors

Nuclear Reactor Construction Market, by Application:

• Baseload Electricity Generation
• Desalination & Process Heat
• Marine Propulsion
• Others

Nuclear Reactor Construction Market, by Region:

• North America
• Europe
• Asia Pacific
• South America
• Middle East & Africa

Competitive Landscape

Company Profiles: Detailed analysis of the major companies present in the Global Nuclear Reactor Construction Market.

Available Customizations:

With the given market data, the publisher offers customizations according to a company's specific needs. The following customization options are available for the report:

Company Information

• Detailed analysis and profiling of additional market players (up to five).

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