Aalo Atomics has achieved criticality for its Aalo-X Critical Test Reactor at Idaho National Laboratory, marking the first ...

Aalo Atomics’ Aalo-X Critical Test Reactor (CTR)—dubbed “Project First Light”—has reached criticality at Idaho National Laboratory (INL), marking the fourth Department of Energy (DOE)–authorized ...

Oklo's Texas isotope reactor cleared a key DOE safety review, moving closer to startup and a planned July 2026 first ...

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Nuclear energy in the West took another step forward as the first privately developed, non-light-water reactor to go critical in the United States in more than 40 years reached a major milestone when ...

Antares Nuclear, Inc. announced Thursday that its Mark-0 microreactor achieved criticality at Idaho National Laboratory, becoming the first advanced reactor to reach the milestone under a U.S.

WASHINGTON (AP) — The Energy Department says a small nuclear reactor under development at a national lab has reached a crucial milestone that could allow it to produce electricity within a few years.

They’re not exactly IFRs but France built and operated the Phenix and Superphenix fast breeder reactor with similar goals as the IFR. Then there are the Monju sodium cooled fast breeder reactor in ...