US nuclear fuel and services company Centrus Energy and Antares Nuclear announced the signing of a definitive multi-year contract for Centrus to supply Antares with high-assay low-enriched uranium (Haleu), with deliveries beginning before the end of the decade.

Centrus said the contract ensures a reliable, domestic source of Haleu to support Antares’ advanced reactor projects, including for space and national security missions.

The new contract includes prepayments from Antares to support the expanded Haleu capacity.