LATEST INTELLIGENCE
DOE
Westinghouse completed zero-power (cold) criticality testing for its eVinci microreactor test unit at the National Criticality Experiments Research Center (NCERC), in partnership with Los Alamos and Idaho National Laboratories. The test validated core des
DOE
Westinghouse has announced the successful completion of zero-power criticality testing for its eVinci microreactor. This marks a key technical milestone in the eVinci development program.
DOE
Antares's Mark-0 microreactor achieved criticality at Idaho National Laboratory, described as a significant technical milestone. The ANS president's column also notes additional criticality events occurred in June and July enabled by DOE partnerships with
DOE
Oklo Inc. announced that its Groves Isotope Test Reactor achieved first criticality, reaching a controlled, self-sustaining nuclear chain reaction at low power. This marks a significant technical milestone for the company's research reactor program.
DOE
Oklo's Groves Isotope Test Reactor achieved criticality at 9:19 p.m. EDT on August 6, 2026, at the company's facility in Lockhart, Texas, becoming the fifth DOE-authorized reactor to reach criticality under the agency's authorization process.
DOE
Oklo's Groves Isotope Test Reactor has achieved first criticality, while Deep Fission's underground reactor received safety design approval. Both are part of the USA's Reactor Pilot Program.
DOE
Aalo Atomics' Aalo-X reactor completed a zero-power fueled criticality demonstration on July 4, 2026, as the fourth firm to do so under the U.S. DOE Reactor Pilot Program. Three other unnamed micro-reactor companies also achieved criticality milestones ea
DOE
Aalo Atomics' Critical Test Reactor at Idaho National Laboratory achieved initial criticality in the early hours of July 5, 2026, becoming the fourth DOE-authorized US microreactor to reach the milestone by the 4 July 2026 deadline.
DOE
Aalo Atomics achieved first criticality on July 4, 2026 at Idaho National Laboratory with a zero-power, low-enriched uranium–fueled sodium-cooled test reactor (a full-scale version of its planned 10-MWe Aalo-X), becoming the fourth DOE-authorized reactor
DOE
Deployable Energy has reportedly achieved criticality at Idaho National Laboratory (INL) ahead of the July 4, 2026 deadline set by Executive Order 14301. This is part of the DOE's Reactor Pilot Program targeting first-of-a-kind nuclear technology demonstr
DOE Reactor Pilot
The July 4 criticality race: final grid and aftermath.
NRC Licensing
Who's advancing through NRC review, scored live.
Fuel
HALEU supply, enrichment, and the fuel bottleneck.
Space Nuclear
Reactors for orbit, the Moon, and beyond.
International
Advanced-reactor programs outside the US.
Briefings
The full intelligence feed.
Companies
Every company we track, in one index.
Supply Chain
Vendors, forgings, and long-lead components.
Reactors
Design-by-design tracker.
Methodology
How the scoring works.
About
What Corium is.