Aalo Atomics Targets July 2026 Criticality for Aalo-X Reactor at Idaho National Laboratory
Aalo Atomics plans to achieve initial criticality for Aalo-X, its first commercial scale reactor, in July 2026. The company's facility at Idaho National Laboratory is completed, with the reactor and primary systems installed.
The remaining steps before criticality include the Department of Energy's issuance of the final Documented Safety Analysis, fuel receipt, and fuel loading, according to Yasir Arafat, Aalo's co-founder and Chief Technical Officer. Reactor fuel for Aalo-X is being manufactured by Global Nuclear Fuels in Wilmington, North Carolina.
Manufacturing footprint
Aalo Atomics built a 40,000 square foot pilot scale manufacturing plant in Austin, Texas in just one year. The pace of that build, combined with the completed Idaho site, places the company among the small modular reactor developers furthest along toward a first fission event.
Cost target
The company has a stated goal of achieving an electricity production cost of less than 3 cents per kilowatt hour. That target, if met, would put Aalo-X output in the range of the cheapest dispatchable generation on US grids and well below typical merchant nuclear costs disclosed in recent SMR project filings.
Context
Aalo-X is one of several advanced reactor designs working through the Department of Energy's demonstration pathway at Idaho National Laboratory rather than the Nuclear Regulatory Commission's commercial licensing route. The Documented Safety Analysis is the gating safety document for DOE-authorized reactors, and its issuance is the final regulatory hurdle Arafat identified ahead of fuel loading.
The July 2026 criticality target is the next observable signal. A slip in DOE's Documented Safety Analysis issuance, or in the fuel delivery from Global Nuclear Fuels' Wilmington facility, would be the most likely cause of delay.
Source: atomicinsights.com (opens in a new tab)1 sourcePermalink