Nuclear Fuel Cycle
The full sequence of industrial steps nuclear fuel goes through -- uranium mining, conversion to uranium hexafluoride, enrichment, fabrication into reactor fuel, and used-fuel management.
Covered in 6 MetalsCost.com News Intelligence articles, most recently on October 15, 2026.
Overview
The nuclear fuel cycle is the full chain of industrial steps that turn mined uranium ore into reactor fuel and then manage what's left afterward. Ore is milled into "yellowcake," converted into uranium hexafluoride gas, enriched to raise the proportion of fissile U-235, fabricated into ceramic fuel pellets loaded into metal rods, then irradiated for years inside a reactor before the used fuel is cooled, stored and either reprocessed or disposed of. As of 2026, 440 reactors operate worldwide, drawing on global uranium demand estimated at roughly 68,920 tonnes in 2025.
Metals It Depends On
Uranium is the cycle's sole raison d'être — every step exists to get uranium from ore to fissile material inside a reactor core and manage it safely afterward. Natural uranium ore contains only about 0.7% of the fissile U-235 isotope, so most reactor fuel requires enrichment up to roughly 3-5% before fabrication; supply is geographically concentrated, with Kazakhstan alone accounting for close to 40% of the uranium mined worldwide.
Sources
- Global uranium demand ~68,920 tonnes in 2025, Kazakhstan's ~39% share — Supply of Uranium (2025)
- 440 operable reactors worldwide as of 2026 — Nuclear Energy Statistics 2026: 440 Reactors, Record Output (2026)
Coverage
Floating Nuclear Start-Up Bluecore Buys Its First Enriched Uranium From Trader WMC
New reactor developers create additional customers for enriched uranium.
Urenco USA Starts Its Sixth New Enrichment Cascade, Finishing 75% of Its Expansion
US enrichment capacity is growing on schedule.
Uranium Energy Corp Becomes a Two-Mine Producer and Sells Uranium at $93.13 a Pound
More US uranium production adds a domestic source of reactor fuel feed.
Peninsula Lifts Its Wyoming Uranium Resource to 59 Million Pounds as Output Lags
A bigger resource helps long-term supply, but near-term US output remains behind plan.
China-Backed CNOL Deal Lets Bannerman Build Namibia's Etango Uranium Mine Debt-Free
A future uranium source is now funded, but production is still years away.
US Adds 13 Nuclear Fuel Projects to DOE Launch Pad, Targeting Uranium Enrichment and Reactor Fuel
The DOE's National Reactor Innovation Center added 13 projects spanning reactor design, uranium enrichment and fuel fabrication to its Launch Pad program, part of a push to rebuild the domestic nuclear fuel supply chain.
