A first cylinder, a new enrichment band

Urenco USA has produced its first commercial cylinder of low-enriched uranium plus (LEU+), described as the first commercial production of this fuel in the United States. LEU+ enriches uranium to between 5% and 10% U-235 — above the 3% to 5% band of conventional light-water reactor fuel, and below the 10% to 20% band that defines HALEU.

The milestone matters because it puts a U.S. enricher into the intermediate enrichment territory where advanced reactor fuel supply chains begin.

Starter material for HALEU

LEU+ can serve as a starter material for HALEU, which requires dedicated facilities and higher enrichment. A domestic source of 5-10% material gives fuel fabricators and reactor developers a lower-enriched feedstock that can be blended or further enriched, reducing exclusive reliance on imported material or on a single HALEU producer.

LEU+ enriches uranium to between 5% and 10% U-235 and can serve as a starter material for HALEU, which sits between 10% and 20% enrichment and requires dedicated facilities.

The licensing foundation

Urenco USA received U.S. Nuclear Regulatory Commission approval in September 2025 to enrich uranium up to 10% U-235, and all gas centrifuge cascades at its site are now licensed to make LEU+. That site-wide licensing breadth, rather than a single-cascade authorization, is what allows commercial production to scale.

Expansion past 7 million SWU

Urenco USA is expanding its New Mexico site to push domestic capacity past 7 million separative work units over the next ten years. Construction on a new enrichment plant starts in 2029, adding 2.1 million units of capacity, with first new cascades online in 2032 and more through 2036 — capacity earmarked for both standard fuel and LEU+.

Reading the signal

The U.S. enrichment landscape is thickening. Centrus is running a commercial HALEU cascade at Piketon, Ohio; Urenco USA has now commercialized LEU+; and General Matter's $1.5 billion Paducah-area project has entered NRC review with a HALEU amendment planned next year.

For HALEU buyers, the strategic implication is a gradually broadening base of domestic enrichment capability — and eventually competition on price, enrichment level and delivery timing for the material advanced reactors need.

This article was assisted by AI analysis. Please refer to the original source for official information.