North America Small Modular Reactor Market Size, Share & Forecast, By Reactor Type, Application & End User, 2026–2031

The North America Small Modular Reactor Market was valued at USD 2.09 billion in 2025. The estimate covers reactor technology development, licensing, dedicated fuel activity, engineering, site preparation, nuclear-grade equipment and construction expenditure recognized within the United States, Canada and Mexico. The United States represented approximately 68% of the market, while Canada accounted for about 31%, reflecting the advanced status of the Darlington BWRX-300 project. The market remained expenditure-led because no new commercial North American SMR had entered full-scale operation during the base year.

The market is projected to grow at a CAGR of 24.22% from 2025 to 2031, reaching USD 7.68 billion by 2031. Growth will be driven by movement from design and licensing into long-lead procurement, modular fabrication, civil construction, fuel production and commissioning. The forecast assumes continued progress at Darlington, Natrium, Clinch River, Palisades and Seadrift, alongside additional corporate-backed projects. Annual growth is expected to remain above 23% throughout the forecast period, although the revenue mix will become progressively more construction and equipment intensive.

Profit pools will shift from reactor design and regulatory consulting toward proprietary fuel, nuclear-grade components, EPC integration, digital controls and lifecycle services. Reactor developers with fuel capabilities can capture recurring revenue beyond the initial plant sale, while qualified component suppliers benefit from long lead times and limited competition. EPC margins will depend on interface control and schedule discipline because first-of-a-kind projects carry substantial completion risk. After reference plants are delivered, repeat-unit engineering, factory modules, outage services and replacement fuel should provide the most defensible recurring economics.

The largest constraint is the combined effect of first-of-a-kind capital risk, fuel availability and licensing execution. Several advanced reactors require HALEU or specialized TRISO fuel that lacks a fully mature commercial supply chain. Project sponsors must also finance engineering and construction over several years before operating revenue begins. Regulatory reviews are becoming more predictable, but project-specific permits, operating authorization and hold points still apply. A delay in fuel qualification, component delivery or regulatory closure can move commissioning dates and materially increase financing costs.

The United States is larger by current expenditure and developer breadth, while Canada has the most advanced grid-scale SMR construction pathway. The United States market was estimated at USD 1.42 billion in 2025, compared with USD 0.64 billion for Canada. United States activity spans light-water, gas-cooled, sodium-cooled, molten-salt and microreactor programs. Canada's position is concentrated around the Darlington BWRX-300, provincial utility planning and a coordinated national SMR framework. Cross-border regulatory cooperation may allow common designs and suppliers to serve both markets.

Electricity demand from data centers and AI infrastructure has the greatest incremental impact because it creates large, concentrated loads with strong requirements for reliability and carbon reduction. United States data-center electricity consumption is projected to rise by approximately 240 TWh between 2024 and 2030. Individual future campuses may require several hundred megawatts or more, aligning with multi-module SMR configurations. Corporate off-takers can also support long-term power contracts that improve financing visibility, although many projects will not begin operation until around or after 2030.