Centrus and Antares Sign Multi-Year HALEU Supply Contract

Centrus Energy and Antares Nuclear have signed a multi-year contract for supply of High-Assay Low-Enriched Uranium (HALEU), with deliveries to begin before the end of the decade. The deal includes prepayments from Antares to help Centrus expand HALEU capacity at its facility in Piketon, Ohio, the only licensed HALEU production facility in the western world. Antares is developing compact microreactors for military and space applications, and has been selected for programs by the U.S. Army, Air Force, and Space Force.

Where this fits

This contract addresses a critical gap in the firm-power case: sovereign fuel supply. Advanced reactors cannot operate without enriched uranium, and until now, the U.S. had zero domestic HALEU production capacity. The contract binds prepayment capital to domestic enrichment infrastructure, creating a material incentive to build and sustain supply chains outside China's control. This is sovereignty, not just commerce.

What it means

Australia has no indigenous enrichment capacity and no advanced reactor program. If Australia were to deploy firm nuclear power, it would depend on imports of fabricated fuel or enriched uranium from allied suppliers. The Centrus-Antares deal shows that countries serious about energy security are locking in domestic fuel supply before reactors are built. Australia's renewables-plus-gas pathway depends entirely on imported panels, batteries, and inverters from China. A nuclear option would require enriched uranium imports, yes, but from politically stable allied sources with diversified supply chains. The difference is material: a nuclear grid's fuel supply sits in a small number of trusted jurisdictions; a renewable grid's supply chain is concentrated in one.