Get AI Briefings, Transcripts & Alerts on Local & National Government Meetings — Forever.
DOE managers say several advanced reactors could reach criticality by July 4
Summary
U.S. Department of Energy officials and Idaho National Laboratory managers told a June briefing that aggressive executive orders and streamlined DOE-NRC coordination have brought multiple advanced-reactor demonstrations close to achieving criticality, with several pilot systems likely to reach that milestone by July 4, 2026.
DOE and Idaho National Laboratory officials told visiting stakeholders that a rapid push from the federal level has accelerated authorization and testing of advanced reactors and microreactors, and that several pilot systems are likely to achieve criticality by July 4, 2026.
John (Idaho National Laboratory/Battelle Energy Alliance) said the administration's executive orders directed dozens of agency taskings and set an ambitious target of three new reactor systems reaching criticality by July 4. "I think we will have 3 criticalities by July 4," he said, adding that changes in regulatory approaches and greater coordination with the Nuclear Regulatory Commission (NRC) and other agencies have materially shortened timelines.
Bob, the DOE side-office manager leading regulatory reform and facility safety approvals, described concrete steps his office has taken to speed reviews and reduce duplicative internal requirements. He said his office pared internal guidance from roughly 1,100 pages to about 600 in a rapid staff effort, deployed detailees from the NRC and Naval Reactors to help authorizations, and set shorter internal review windows. "We got 12 detailees from NRC to help us," he said, and added that DOE is holding applicants to standards: two companies had their preliminary documented safety analyses returned as inadequate.
Officials said DOE has enrolled roughly 10 companies and about 11 reactor projects in a pilot authorization process; Bob said up to five reactors could meet the July 4 goal (three on-site at INL and two off-site) though he declined to name which firms might succeed. John and Bob emphasized that the work remains safety-driven even as the process is compressed.
The briefing also outlined supply-chain and fuel actions. John said DOE has committed $2,700,000,000 to reestablish domestic enrichment capabilities for low-enriched and high-assay low-enriched uranium to support advanced reactors. Officials said stabilization of domestic fuel supplies and supply-chain maturation are essential to turn demonstration criticalities into sustained operations.
Speakers flagged state readiness and community acceptance as an ongoing constraint. John noted that 28 states responded to a DOE request for information about hosting fuel recycling or processing capacity; he described the federal concept of "nuclear prosperity zones" that could be paired with siting and economic incentives if states opt in.
The presenters said the DOE's efforts do not erase rigorous safety review: Bob reiterated his office's role as safety-basis approval authority at DOE facilities and said the agency is coordinating closely with the NRC and other regulators.
Slides from the briefing were made publicly available and officials said further technical details could be discussed during scheduled site tours and follow-up meetings.
