Nuclear Power - Market Share Analysis, Industry Trends & Statistics, Growth Forecasts (2026 - 2031)

According to Mordor Intelligence, the nuclear power market size is projected to expand from 400.56 gigawatt in 2025 and 409.90 gigawatt in 2026 to 425 gigawatt by 2031, registering a CAGR of 0.73% between 2026 to 2031.

This report is Segmented by Reactor Type (Pressurized Light-Water Moderated and Cooled Reactor, Fast Breeder Reactor, and More), Reactor Size (Large, Medium, and Small), Fuel Type (Low-Enriched Uranium, and More), Application (Grid-Connected Power, Industrial Process Heat and Steam, and More), End-User (Utilities and IPPs, Industrial and Petro-Chemical, and More), and Geography (Europe, Asia-Pacific, and More).

Global Nuclear Power Market Trends and Insights

Increase in Demand for Clean Baseload Power

Governments tightening carbon budgets now view nuclear as the only dispatchable zero-emission source that can scale quickly enough to back up intermittent renewables. France's 2024 energy law mandates six new EPR2 units, the United Kingdom's Great British Nuclear program targets 24 GW by 2050, and U.S. production tax credits under the Inflation Reduction Act improve project economics in deregulated markets. These measures collectively restore an investment thesis that had eroded after a decade of retirements outpacing new builds. Investor sentiment is also improving because modern policy instruments, such as U.K. regulated asset-base models, lower borrowing costs that previously drove project cancellations. As a result, the Global nuclear power market is regaining relevance in national decarbonization roadmaps, particularly where storage costs for high-renewables scenarios remain prohibitive.

Lifetime Extension & Uprate Programs

Extending the operating life of existing reactors from 40 to 60 or even 80 years defers multi-billion-dollar replacement builds. The U.S. Nuclear Regulatory Commission approved 11 subsequent license renewals in 2024-2025, lifting the average remaining life of the domestic fleet to 28 years. France's EUR 49.4 billion Grand Carenage upgrades similarly add decades of output at a fraction of new-build cost. Uprate projects boost generation by 5-20% through equipment replacements that avoid greenfield permitting, achieving levelized costs below USD 30 per MWh versus more than USD 70 per MWh for new large reactors. This strategy, however, concentrates fleet-age risk, making operational excellence and predictive maintenance critical to avoid unplanned outages that erode cost advantages.

Cost Overruns & Financing Challenges

High capital costs and construction delays continue to erode investor confidence. Vogtle 3-4 entered service at USD 35 billion, more than double the budget, while France's Flamanville 3 consumed EUR 19.1 billion over 17 years. These overruns led to credit downgrades and forced governments to backstop utility balance sheets. First-of-a-kind engineering risk, supply-chain fragmentation, and evolving safety regulations all drive cost blowouts. Unless serial builds improve project delivery, the Global nuclear power market risks ceding ground to cheaper renewables in deregulated markets where levelized cost parity remains elusive.

Other drivers and restraints analyzed in the detailed report include:

1. Commercialization of Advanced SMRs
2. Industrial Decarbonization Process-Heat Demand
3. HALEU Fuel-Supply Bottlenecks

For complete list of drivers and restraints, kindly check the Table Of Contents.

Segment Analysis

Pressurized light-water reactors captured 72.8% of the Global nuclear power market share in 2025, underpinned by standardized supply chains and decades of operational data. Fast breeder reactors, although a minor base, are forecast to grow at 21.4% CAGR, driven by Russia's BN-800 and China's CFR-600 programs that validate closed fuel cycles. Pressurized heavy-water designs remain strategically important for India and Canada, offering natural-uranium autonomy. Boiling water reactors lag due to post-Fukushima retrofits that extend outages and inflate O&M costs.

Fast breeder momentum signals a structural pivot for the Global nuclear power market. Breeders extract up to 60 times more energy per kilogram of uranium, easing resource constraints as demand climbs. Their ability to burn plutonium stockpiles also aligns with non-proliferation objectives. However, complex sodium-cooling systems pose fire-safety challenges, and high capital costs deter adoption without sovereign backing. Consequently, light-water designs will preserve scale advantage through 2031, but breeders introduce competitive tension that could reshape vendor landscapes after 2035.

Medium-sized plants between 500 and 1,000 MWe represented the largest slice of the Global nuclear power market size in 2025, balancing economies of scale with grid integration flexibility. Yet small reactors below 500 MWe are projected to surge at 20.1% CAGR, propelled by factory fabrication that slashes onsite labor and financing risk.

Capital-light modules appeal to emerging economies with weaker balance sheets, while industrial buyers need only a few hundred megawatts for captive loads. NuScale's 77 MWe module and GE-Hitachi's 300 MWe BWRX-300 anchor the commercial pipeline. Large reactors above 1,000 MWe retain a cost-per-kilowatt edge where policy guarantees long-term offtake, but decade-long build times expose sponsors to demand uncertainty. The size segmentation, therefore, emphasizes contrasting business models rather than mere engineering: incremental capacity for distributed demand versus bulk baseload for centralized grids.

Geography Analysis

Europe retained 39.1% of capacity in 2025, anchored by France's 56-unit fleet that supplied 65% of national electricity. New builds in the United Kingdom, Poland, and the Czech Republic offset retirements in Germany and Belgium, stabilizing the region's capacity through 2031. France started civil works on its first EPR2 at Penly in 2026, while Hinkley Point C in the U.K. targets a 2031 start to replace aging AGR reactors.

Asia-Pacific is the growth engine, expanding at 7.2% CAGR as China connected 22 reactors in 2024-2025 and India commissioned two indigenous 700 MWe heavy-water units. Japan's phased restarts and South Korea's policy reversal also add incremental capacity. The region's regulatory agility and sovereign financing structures underpin bigger project pipelines than in liberalized Western markets.

North America's outlook hinges on SMR demonstrations. Vogtle's two AP1000 units added 2.2 GW, but future scale depends on cost-shared pilots such as TerraPower's Natrium and Ontario Power Generation's BWRX-300. The Middle East and Africa are early-cycle adopters: the UAE's Barakah delivers 5.6 GW of baseload power, and Saudi Arabia has pre-qualified vendors for a 2.8 GW tender. South America's pipeline centers on Brazil's Angra 3 and Argentina's CAREM-25, signaling a cautious but persistent regional interest.

1. Electricite de France SA (EDF)
2. Rosatom State Atomic Energy Corporation
3. China National Nuclear Corporation (CNNC)
4. Westinghouse Electric Company LLC
5. GE-Hitachi Nuclear Energy
6. Framatome SA
7. Mitsubishi Heavy Industries Ltd
8. Korea Hydro & Nuclear Power / KEPCO E&C
9. BWX Technologies Inc.
10. Bechtel Corporation
11. Doosan Enerbility Co. Ltd
12. Fluor Corporation (NuScale)
13. SKODA JS a.s.
14. Holtec International
15. TerraPower LLC
16. Rolls-Royce SMR Ltd
17. X-Energy LLC
18. General Fusion Inc.
19. Ontario Power Generation
20. Babcock International Group
21. Bilfinger SE
22. Duke Energy Corporation
23. Japan Atomic Power Company
24. Ansaldo Nucleare

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