Nuclear power has been through a difficult decade. Multiple developed-market countries reduced or announced elimination of their nuclear generation. New reactor construction was rare and often disappointing when it did occur. Public sentiment was largely negative following the 2011 Fukushima accident. Investor interest was minimal. That environment has shifted materially over the past several years. Multiple forces are converging to produce what looks like a structural revival — understanding the specific mechanisms behind the shift is essential to any coherent view of the sector.
The multi-year setup
Uranium prices bottomed in 2017 at approximately $18 per pound, after years of declining demand and expanded production capacity. Multiple major producers had closed capacity or reduced production materially. Kazatomprom, the world's largest producer, had been implementing production cuts to support prices. Cameco, a major Western producer, had similarly reduced production and was purchasing uranium in the spot market to fulfill contracts rather than producing it.
By 2022, this multi-year supply discipline had substantially reduced global uranium production below the level of reactor demand. The gap was being filled by secondary supply — accumulated inventory, government stockpile releases, decommissioning materials, and other non-primary sources. This gap was not sustainable indefinitely; secondary supply is finite.
The demand acceleration
Multiple developments have simultaneously increased expected uranium demand.
Climate policy commitments. Multiple developed-market governments have shifted from anti-nuclear to pro-nuclear stances as part of net-zero commitments. Japan has restarted multiple reactors that were shut after Fukushima. France has committed to substantial new reactor construction. The UK has announced new nuclear plans. Sweden has reversed its previous nuclear phase-out policy. South Korea has restarted new reactor construction after policy shifts.
AI power demand. The specific power requirements of large-scale AI infrastructure have shifted the utility calculus. Data centres running AI workloads require enormous continuous power supply — the specific characteristics of nuclear (dispatchable, zero-carbon, high capacity factor) match those requirements well. Multiple hyperscalers have announced nuclear power purchase agreements. Microsoft's agreement to restart Three Mile Island Unit 1 was the highest-profile of these deals but is not the only one.
Emerging market growth. China continues large-scale nuclear construction, with dozens of reactors under construction or planned. India has ambitious nuclear expansion plans. Various emerging markets are pursuing nuclear power as a specific tool for decarbonising electricity generation while maintaining growth.
Life extensions. Multiple existing reactors have received or are pursuing operating licence extensions that keep them producing uranium demand for decades beyond earlier retirement dates. Each life extension effectively adds to expected uranium demand.
The supply constraints
The specific supply-side constraints on uranium are meaningful.
Primary mine capacity. Bringing new uranium mines online is expensive and slow. Development timelines from discovery to production typically run a decade or more. The years of price-driven capacity cuts through the 2010s meant limited investment in new mine development.
Utility-fuel enrichment. The processing infrastructure that converts natural uranium into reactor-usable fuel has capacity constraints. Enrichment services are provided by a small number of companies globally (URENCO, Orano, TENEX in Russia, and smaller operations). Any material expansion of nuclear reactor operation requires either additional enrichment capacity or higher enrichment utilization at existing facilities.
Geographic concentration. Uranium production is heavily concentrated. Kazakhstan produces approximately 40% of global primary supply, Canada roughly 15%, Australia roughly 10%, and other countries small shares. Geopolitical developments affecting Kazakhstan (particularly its political stability and its economic relationship with Russia) directly affect global uranium supply.
The pricing response
Uranium spot prices moved from approximately $18/lb in 2017 to over $100/lb by early 2024, before consolidating in a range around $70-90/lb through the middle of 2024 and 2025. The move has been substantial but does not yet fully reflect the supply-demand tightness that most analysts expect over the coming decade.
The forward-price question is complex. Continued reactor demand growth combined with the constraints on supply expansion suggest structural upward pressure on prices. But the market has cycles, and the specific price trajectory depends on the pace at which new supply comes online, the pace at which new demand materialises, and the specific behaviour of remaining inventory holders.
The investment vehicles
Multiple public equity vehicles provide exposure to the nuclear thesis with different characteristics.
Uranium producers. Cameco (US and Canada listing) is the largest Western pure-play uranium producer. Multiple smaller producers exist. These names are directly leveraged to uranium prices but carry specific operational and geographic risks.
Uranium mining ETFs. URA and URNM are the largest US-listed uranium sector ETFs. They provide diversified exposure to producers and to specific companies in the fuel cycle. Volatility is meaningful.
Physical uranium vehicles. Sprott Physical Uranium Trust and similar vehicles hold physical uranium directly. This provides the cleanest exposure to uranium prices without operational risks of producers, but carries specific risks related to trust structure and storage economics.
Reactor operators. Utilities operating nuclear reactors have specific exposure to nuclear economics. Constellation Energy, Vistra Corp, and various other US utilities have meaningful nuclear generation. These names are more leveraged to power prices and utility economics than specifically to uranium prices.
Reactor manufacturers and SMR developers. Companies developing next-generation reactor designs, particularly small modular reactors, provide specific exposure to the potential new-reactor build cycle. NuScale, various startups, and legacy reactor manufacturers all have exposure. These names carry very high execution risk given the nascent state of SMR commercialisation.
The specific SMR question
Small modular reactor development has been discussed for over a decade. Progress has been slow. Multiple design efforts have faced delays, cost increases, or cancellation. The specific promise of SMRs — factory-built, standardised, faster to deploy — has not yet been demonstrated at commercial scale.
Whether SMRs deliver on their promise over the coming decade is one of the more consequential open questions in the nuclear thesis. If they do, the potential deployment opportunity is enormous and the specific SMR developers with successful designs will capture substantial value. If they don't, the nuclear expansion story shifts more toward traditional large-reactor construction, which has its own execution challenges.
The public policy risk
Nuclear power depends heavily on public policy support. Regulatory frameworks, licensing procedures, government subsidies, waste management policies, and public sentiment all affect the commercial viability of nuclear projects. Any material policy shifts in either direction can dramatically affect the sector.
The current political environment is broadly supportive of nuclear across major developed markets. Whether that support persists through election cycles is a specific risk factor. Nuclear projects have long payback periods, and policy consistency across the payback horizon is essential for the economics to work.
The rule to internalise
The nuclear power thesis has meaningful structural support from multiple converging factors. Climate policy, AI-driven power demand, and existing reactor life extensions all point toward substantially higher uranium demand over the coming decade than most historical trajectories would have predicted. Supply-side constraints suggest this demand growth will be met with meaningful price pressure. But specific timing, specific investment vehicle selection, and specific execution risks (particularly around SMR development) all matter enormously to actual investment outcomes. Understanding the thesis broadly is straightforward; capturing exposure to it well is more nuanced than a simple "nuclear is back" narrative suggests.
Educational content only. Not investment advice.