Nuclear Power Pioneers: Projects Targeting Criticality by July 4, 2026

Aalo Atomics Inc.: Advanced SMR design.
Antares Nuclear Inc.: Compact reactor design.
Atomic Alchemy Inc.: Innovative fission tech.
Last Energy Inc.: Modular reactor system.
Oklo Inc.: Fast reactor tech.
Natura Resources LLC: Sustainable reactor design.
Radiant Energy Inc.: Microreactor innovation.
Terrestrial Energy Inc.: Integral Molten Salt Reactor.
Valar Atomics Inc.: Advanced fission system.

Other Projects Targeting Criticality by 2030

Kairos Power: Molten salt-cooled SMRs. Critical by 2030 (Google deal, 500 MW).
Oklo: Liquid metal-cooled fast reactors, 15-50 MW. Critical by 2027 (Switch deal, 12 GW by 2044).
Deep Fission: Underground pressurized water reactors. Critical by 2028 (2 GW for data centers).
Radiant Nuclear: Portable microreactor (Kaleidos, 1.9 MW). Critical by 2028 (remote sites, data centers).
Boston Atomics: Gas-cooled, TRISO-fueled MIGHTR reactor. Critical by 2030 (industrial heat, power).
NuCube Energy: Fission reactor for Utah. Critical by 2030 (MOU with Utah San Rafael Energy Lab).
X-Energy: High-temperature gas-cooled Xe-100, 80 MW. Critical by 2030 (300 MW deals).
TerraPower: Natrium sodium-cooled reactor, 345 MW. Critical by 2030 (Wyoming plant).