Cameco announced last night a cut to its production guidance for the McArthur River mine, one of the world’s largest and highest-grade uranium deposits. Output is now expected at 14–15 million lbs in 2025, down from the previous 18 million lbs target, as operations were hampered by development delays and the timing of ground freezing. The company added that part of the shortfall could be offset by 1 million lbs of potential upside at its Cigar Lake mine.
This update comes just a week after Kazatomprom, the world’s largest uranium producer, reduced its 2026 nominal production target by 10%, citing an insufficient supply-demand balance to justify a return to full capacity. Taken together, the adjustments from the two dominant players imply a reduction of more than 7% in global primary uranium supply.
Looking ahead, supply constraints are likely to intensify when uranium demand picks up in conjunction with reactor restarts and new plant construction. Persistent shortages of critical inputs (e.g. sulfuric acid) and of skilled labor are unlikely to be solved overnight. And limited access to specialized equipment—thanks to 15 years of underinvestment in the manufacturing capabilities of the uranium/nuclear supply chain—is another structural bottleneck.
Against this backdrop, the setup for uranium prices and the broader nuclear value chain remains highly supportive.
