Standard Nuclear Selected By US DOE Advanced Research Projects Agency-Energy To Receive ~$7M In Funding Under HORNIG Program

Approximately $7 million in funding under the HORNIG program supports particle fuel for high-temperature gas reactors made from recycled nuclear materials

Standard Nuclear, Inc. (NYSE:STDN) ("Standard Nuclear" or the "Company"), a reactor-agnostic producer of TRISO nuclear fuel and the only U.S. company with industrial-scale TRISO fuel fabrication facilities, today announced that it has been selected by the U.S. Department of Energy's ("DOE") Advanced Research Projects Agency-Energy ("ARPA-E") to receive approximately $7 million in funding under the High-performance Optimized Recycled Nuclear Isotopes for Gen IV reactors ("HORNIG") program.

The funding would be used for the Mixed Oxycarbide ("MCO") TRISO project, which aims to develop advanced reactor fuel using recycled transuranic and uranium feedstocks. Through this initiative, Standard Nuclear will engineer advanced fabrication methods to produce tristructural isotropic ("TRISO") particle fuel incorporating recycled transuranics, including plutonium. By establishing an alternative to high-assay low-enriched uranium ("HALEU"), this work aims to diversify the fissile feedstock supply chain for existing and next-generation reactors while actively reducing commercial spent fuel stockpiles. Standard Nuclear leads this project in partnership with SHINE Technologies, a fusion technology company.

ARPA-E selected eight projects to receive up to a combined $50 million through HORNIG to advance next-generation nuclear fuels. The selection builds on Standard Nuclear's work to convert transuranic and plutonium-bearing materials into fuel, including the Company’s June 2026 selection by the DOE to enter advanced negotiations in its Surplus Plutonium Utilization Program.