Advanced nuclear meets the challenge of bringing three or more reactors to criticality by July 4th!
The complete list of 2025 NuclearNews 40 under 40 includes:
Advanced nuclear meets the challenge of bringing three or more reactors to criticality by July 4th!
Aalo Atomics became the fourth company to achieve criticality with their advanced, Gen IV microreactor by July 4th, under Executive Order 14301 propelling the advanced nuclear sector towards commercializatio.
Aalo Atomics has completed assembly of its Aalo-X Critical Test Reactor at Idaho National Laboratory, with fuel delivery imminent and final DOE approval pending, and expects to achieve criticality within weeks, ahead of the July 4 deadline this summer...
Aalo Atomics has completed assembly of its Aalo-X Critical Test Reactor at Idaho National Laboratory, with fuel delivery imminent and final DOE approval pending, and expects to achieve criticality within weeks, ahead of the July 4 deadline this summer...
Aalo Atomics has become the second company in Nucleation’s portfolio to receive approval from the U.S. Department of Energy for the preliminary safety analysis of its reactor demonstration, marking a key regulatory milestone under DOE’s accelerated Reactor Pilot Program ahead of a targeted 2026 criticality...
Forbes spotlights Aalo Atomics, a Nucleation portfolio company, as part of a new wave of U.S. advanced-nuclear companies moving from concepts to manufacturing, with progress at its Austin factory, a 2026 criticality target at INL, and growing investor support.
Aalo Atomics is partnering with Microsoft to apply generative AI and agentic systems to complex permitting workflows to build faster, more efficient pathways for licensing and deploying advanced reactors...

Nucleation Capital extends a hearty congratulations to four founders from Nucleation portfolio companies—Matt Loszak and Yasir Arafat from Aalo Atomics, Jake Jurewicz from Blue Energy, and Jerrold Vincent from Nuclearn—who have been recognized by the America Nuclear Society for inclusion in their NuclearNews' 2025 “40 Under 40” list, which celebrates innovators shaping the future of nuclear energy. All four are doing amazing things with their companies and are extremely deserving of this recognition.
The complete list of 2025 NuclearNews 40 under 40 includes:
Aalo Atomics – Austin, Texas-based advanced nuclear venture leveraging founder experience designing the DOE’s Gen IV microreactor, MARVEL, an advanced nuclear reactor developed at the INL, to expedite the design, review, approval and scaled deployment of a fleet of highly stable and safe commercial sodium-cooled microreactors optimized for use by data centers and others.
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