# Is the U.S. Uranium Supply Chain Still Dangerously Concentrated?

The EIA's 2025 Uranium Marketing Annual Report, published this week, puts a precise number on the gap between what U.S. reactors pay under long-term contracts and what the spot market now demands: $20.10 per pound. [Cameco Corporation](https://smrintel.com/companies/cameco) reported the end-of-July spot price at $86.36 per pound — a level it has held since roughly February — while U.S. civilian reactor operators paid a weighted-average of $58.46 per pound across all 46.9 million pounds of U₃O₈e purchased in 2025. That delta reflects the value of long-term contracting discipline, but it also reveals how exposed any reactor forced into the spot market would be.

Canada supplied 32 percent of U.S. uranium deliveries in 2025, with Kazakhstan (28 percent), Australia (15 percent), Uzbekistan (7 percent), and Namibia (4 percent) rounding out the major foreign origins. Domestic U.S.-origin uranium claimed just 7 percent — a figure that will draw scrutiny from DOE program managers tracking energy security metrics.

The enrichment picture is arguably more consequential: Russia accounted for 26 percent of foreign separative work units ([SWUs](https://smrintel.com/glossary/enrichment)) delivered to U.S. operators in 2025, the single largest foreign source, at an average price of $108.70 per SWU — up 11 percent from 2024.

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## Spot Price Stability Masks a Structural Contract Gap

Analytics firm Trading Economics reported uranium futures at $86.60 per pound, a price that has held since early April. The consistency is notable: uranium spot hasn't moved meaningfully in roughly six months, suggesting the market has found equilibrium — at least temporarily — after the volatility of late 2024 and early 2025, when prices touched $94.28 per pound.

The more operationally relevant figure for U.S. utilities, however, is the contract price breakdown. Of the 46.9 million pounds U₃O₈e purchased in 2025:

- **87 percent** was delivered under long-term contracts at a weighted-average of **$55.91 per pound**
- **13 percent** was delivered under spot contracts at a weighted-average of **$76.01 per pound**

The $20.10/lb spread between spot and long-term contract prices is a direct measure of the risk premium utilities are currently paying — or avoiding — depending on their contracting posture. For operators who locked in multi-year agreements before the spot price ran up, 2025 fuel costs look manageable. For anyone relying on spot procurement, the economics are meaningfully worse.

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## Enrichment Dependency: Russia at 26 Percent Is the Headline Risk

The feed and enrichment data in the EIA report deserve careful attention from anyone modeling advanced reactor fuel supply chains. In 2025, U.S. civilian operators delivered 32 million pounds U₃O₈e of natural uranium feed to enrichers — with U.S. enrichment suppliers receiving 37 percent and foreign suppliers receiving 63 percent.

Of the 13 million SWUs of [uranium enrichment](https://smrintel.com/glossary/enrichment) services purchased in 2025, the U.S.-origin share was 23 percent. The foreign breakdown:

- **Russia: 26 percent**
- **France: 18 percent**
- **United Kingdom: 14 percent**
- **Netherlands: 8 percent**

Russia retaining the largest single foreign enrichment share — despite ongoing policy pressure to diversify away from [Rosatom](https://smrintel.com/companies/rosatom) — is the most politically sensitive data point in the entire report. The 11 percent year-over-year increase in SWU prices, to $108.70 per SWU, likely reflects tightening capacity at Western enrichers ([Urenco](https://smrintel.com/companies/urenco), [Orano](https://smrintel.com/companies/orano)) and escalating demand as new reactor projects advance toward fuel-load timelines.

For [Centrus Energy Corp](https://smrintel.com/companies/centrus-energy) and any U.S. enrichment expansion efforts, the 23 percent domestic SWU share represents both the current ceiling and the policy target to beat.

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## Foreign Trade Flows: Selling High, Buying Cheap

One underreported dimension of the EIA data concerns U.S. market participants' foreign trade activity. Foreign purchases of uranium by U.S. owners/operators and suppliers totaled 30 million pounds U₃O₈e in 2025, at a weighted-average price of $56.80 per pound. Meanwhile, U.S. suppliers and owners/operators sold 4 million pounds U₃O₈e to foreign buyers at $75.05 per pound.

The arithmetic is straightforward: U.S. market participants are buying internationally at roughly $56.80/lb and, where they're selling internationally, clearing $75.05/lb. That $18.25/lb spread reflects strategic inventory management and opportunistic sales into a market where spot demand is robust.

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## What This Means for the Advanced Reactor Supply Chain

The EIA data covers conventional [low-enriched uranium](https://smrintel.com/glossary/leu) fuel for the existing light-water reactor fleet. But the underlying supply and enrichment dynamics have direct implications for advanced reactor developers.

Several near-term conclusions stand out for the SMR and advanced reactor sector:

**Enrichment capacity is the binding constraint.** With SWU prices up 11 percent year-over-year and Russia still holding 26 percent of U.S. enrichment supply, [High-Assay Low-Enriched Uranium](https://smrintel.com/glossary/haleu)-dependent designs face a more acute version of the same bottleneck. HALEU requires enrichment to 5–20 percent U-235, a service currently available from only a handful of suppliers globally.

**Long-term contracting is not optional.** The $20.10/lb gap between spot and long-term contract prices in 2025 demonstrates what happens when a reactor operator lacks offtake agreements. For [first-of-a-kind (FOAK)](https://smrintel.com/glossary/foak) SMR projects still in licensing, securing long-term uranium supply agreements before commercial operation is a financial imperative, not a procurement preference.

**Domestic uranium's 7 percent share will face policy scrutiny.** DOE energy security programs have consistently flagged low domestic production as a vulnerability. The 7 percent U.S.-origin share in 2025 gives ammunition to advocates of expanded domestic mining and conversion capacity.

**Canada's 32 percent share is a relative positive.** Canadian supply, channeled largely through Cameco, is politically stable and geographically proximate. The deepening Canada-India nuclear cooperation — including uranium supply agreements — signals Cameco is managing its book internationally, which could affect U.S. allocation over time.

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## Key Takeaways

- U.S. civilian reactors purchased **46.9 million pounds U₃O₈e** in 2025 at a weighted-average price of **$58.46/lb**
- Spot uranium sits at **$86.36/lb** (Cameco, end-of-July) and **$86.60/lb** (futures, Trading Economics) — unchanged since approximately February and April, respectively
- **87 percent** of 2025 deliveries came via long-term contracts at **$55.91/lb**; spot contracts averaged **$76.01/lb**
- Canada was the top supplier at **32 percent** of deliveries; U.S.-origin uranium was just **7 percent**
- SWU prices rose **11 percent** year-over-year to **$108.70/SWU**; Russia supplied **26 percent** of foreign enrichment services — the single largest foreign source
- U.S. enrichment suppliers received **23 percent** of SWU business; foreign suppliers **77 percent**

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## Frequently Asked Questions

**What was the average price U.S. reactors paid for uranium in 2025?**
According to the EIA's 2025 Uranium Marketing Annual Report, U.S. civilian reactor owners and operators paid a weighted-average of $58.46 per pound of U₃O₈e across all purchases in 2025. Long-term contract deliveries averaged $55.91/lb; spot contract deliveries averaged $76.01/lb.

**What is the current uranium spot price in mid-2026?**
Cameco reported the end-of-July 2026 spot price at $86.36 per pound. Trading Economics reported uranium futures at $86.60 per pound. Both figures have been essentially flat since approximately February and early April 2026, respectively.

**Which country supplies the most uranium to the United States?**
Canada was the largest single origin of U.S. uranium deliveries in 2025 at 32 percent, followed by Kazakhstan (28 percent) and Australia (15 percent). U.S. domestic uranium accounted for 7 percent.

**How dependent are U.S. reactors on Russian enrichment?**
Significantly. Russia supplied 26 percent of foreign enrichment services (measured in SWUs) delivered to U.S. civilian reactors in 2025 — the largest single foreign source. Total foreign-origin SWUs represented 77 percent of the 13 million SWUs purchased.

**How does enrichment pricing affect advanced reactor economics?**
SWU prices rose 11 percent year-over-year to $108.70 in 2025 for conventional low-enriched uranium. HALEU-dependent advanced reactors require higher enrichment levels and face an even tighter supplier market, making enrichment cost and availability a key risk factor in SMR project proformas.