AI Restarted a Nuclear Plant. Uranium Repriced Around a Customer That Did Not Exist.
Microsoft contracted Three Mile Island’s restart to power AI; Meta and Amazon followed. Demand is projected to rise 28 per cent by 2030. Nuclear and batteries are not rivals — they are two halves of the same data-centre problem.
Published: 11 September 2026
Industry · 5 min read
Where things stand
Written 11 September 2026, on uranium market coverage from the American Nuclear Society and Sprott, and World Nuclear Association demand projections.
Uranium has been repriced by an industry that did not exist as a nuclear customer five years ago. Microsoft signed a twenty-year power purchase agreement with Constellation to restart Three Mile Island specifically to power AI operations; Meta and Amazon have announced comparable long-term nuclear agreements.
The World Nuclear Association expects uranium demand for power generation to rise 28 per cent by 2030, and projections run to more than 150,000 tonnes a year by 2040 against roughly 67,000 today.
Why data centres went nuclear
Because of a requirement most generation cannot meet: very large, constant, carbon-free power at a single point, contracted for decades.
- •Scale — a hyperscale campus is a gigawatt-class load, which is a small number of options
- •Constancy — a data centre runs flat, which suits baseload and does not suit a variable resource on its own
- •Carbon accounting — the operators have public commitments and need generation that satisfies them around the clock, not on annual average
- •Duration — a twenty-year PPA is precisely what makes a restart or a new build financeable
Note what is not in that list: cost. These buyers are not optimising for the cheapest electron. They are optimising for availability at scale under a carbon commitment, and paying for it. That is a genuinely new kind of demand, and it is why the uranium price moved on announcements rather than on reactor construction.
The supply side is slow
New mines and restarted operations will be needed, and uranium mining has the same problem as copper: the response time is measured in years and the last decade discouraged investment. Prices had to rise before that changed, and they have.
Small modular reactors are the other half of the story and the more speculative one. The demand case is real; the delivery record is mostly still ahead of us. Treat announced SMR capacity the way you would treat any announced pipeline.
Why this sits on a battery company’s dashboard
Because nuclear and storage are being bought by the same customer to solve halves of the same problem, and it is a mistake to read them as rivals.
A data centre needs both firm capacity and fast flexibility. Nuclear supplies the first and is poor at the second — reactors do not like following load. Batteries supply the second and cannot supply the first. The AI build-out that is restarting reactors is the same one driving grid investment past half a trillion dollars a year and pulling copper to a record.
It is one demand shock arriving in several commodity markets at once, which is the useful way to read all of these pages together.
Sources
Reporting this piece draws on. Figures were correct as published; scheme terms and commodity prices move.
- Uranium prices up: Could demand more than double?ANS Nuclear Newswire
- Uranium’s Tale of Two MarketsSprott
- Uranium Outlook 2026Sprott ETFs
Frequently asked questions
Why are data centre operators buying nuclear power?+
Because they need very large, constant, carbon-free power at a single point, contracted for decades — a requirement most generation cannot meet. Notably, cost is not the driver: these buyers are optimising for availability at scale under a carbon commitment, which is why uranium moved on announcements rather than on reactor construction.
How much is uranium demand expected to grow?+
The World Nuclear Association expects demand for power generation to rise 28 per cent by 2030, with projections running beyond 150,000 tonnes a year by 2040 against roughly 67,000 today. Supply responds slowly — new and restarted mines take years, and the previous decade discouraged investment.
Does nuclear compete with battery storage?+
They solve different halves of the same problem. A data centre needs both firm capacity and fast flexibility. Nuclear supplies firmness and follows load poorly; batteries supply flexibility and cannot supply firmness. The same AI build-out restarting reactors is driving grid investment past half a trillion dollars a year and pulling copper to a record.
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