Companies

Reactor developers, site sponsors, operators, and delivery partners linked to tracked U.S. projects.

Reactor developer and project sponsorPhysical

TerraPower

Lead developer of the Natrium demonstration project at Kemmerer, Wyoming.

2 tracked projects · Sodium-cooled fast reactor

Reactor developer and test-reactor licenseePhysical

Kairos Power

Developer of the Hermes 2 low-power test reactors in Oak Ridge, Tennessee.

1 tracked project · Fluoride salt-cooled high-temperature reactor

Reactor technology providerDevelopment

X-energy

Technology developer for the Xe-100 project under review at Dow's Seadrift site in Texas.

1 tracked project · High-temperature gas-cooled reactor

Reactor manufacturer and delivery contractorPhysical

BWXT

Prime industrial partner delivering the Project Pele transportable microreactor for the Department of Defense.

1 tracked project · Transportable high-temperature gas reactor

Microreactor developerDevelopment

Radiant Industries

Developer of the Kaleidos experiment conditionally selected for testing in the DOME facility.

2 tracked projects · Gas-cooled microreactor

Reactor developerOperational

Valar Atomics

Developer of the Ward 250 zero-power critical experiment in Utah.

1 tracked project · Zero-power critical experiment

Reactor developer and DOE-authorized operatorOperational

Aalo Atomics

Developer of the Aalo Critical Test Reactor and the planned 10 MWe Project Ascension power reactor.

1 tracked project · Sodium-cooled modular reactor

Microreactor developerOperational

Antares Nuclear

Developer of the Mark-0 zero-power experiment, the first Reactor Pilot Program project to report criticality.

1 tracked project · High-temperature heat-pipe microreactor

Reactor and isotope-production developerDevelopment

Atomic Alchemy

Developer of the Groves pilot project in Caldwell County, Texas.

1 tracked project · Test and isotope-production reactor

Reactor developerDevelopment

Deep Fission

Developer of a deep-borehole test reactor selected for DOE's pilot pathway.

1 tracked project · Deep-borehole reactor

Microreactor developerDevelopment

Last Energy

Developer of the PWR-5 pilot project at Texas A&M's RELLIS campus.

1 tracked project · Small pressurized-water reactor

Fast-reactor and fuel-cycle developerDevelopment

Oklo

Developer of the Aurora and Pluto pilot projects selected by DOE.

2 tracked projects · Fast microreactors

Molten-salt reactor developerDevelopment

Natura Resources

Developer of the university-based pilot project at Abilene Christian University.

1 tracked project · Molten-salt research reactor

Molten-salt reactor developerDevelopment

Terrestrial Energy

Developer of the TETRA-1 pilot project at Texas A&M's RELLIS campus.

1 tracked project · Molten-salt reactor

Microreactor developerOperational

Deployable Energy

Developer of the Unity zero-power experiment authorized through NRIC's Nuclear Energy Launch Pad.

1 tracked project · Microreactor experiment

Advanced-reactor site sponsorPreliminary

Texas A&M University System

Sponsor of the multi-reactor RELLIS campus site now in NRC pre-application engagement.

1 tracked project · Multi-design advanced-reactor site

Utility developer and future operatorDevelopment

Tennessee Valley Authority

Applicant for the first U.S. utility-led BWRX-300 construction permit at Clinch River.

1 tracked project · Gen III+ BWRX-300 SMR

Reactor developer and project sponsorDevelopment

Holtec International

Developer of the dual-unit Pioneer SMR-300 project at the Palisades Energy Center.

1 tracked project · Gen III+ pressurized-water SMR

Reactor developer and equipment supplierReplication

Westinghouse

Developer of the eVinci DOME experiment and AP1000 technology delivered at Vogtle.

2 tracked projects · Heat-pipe microreactor and AP1000 PWR

Microreactor technology developerDevelopment

NANO Nuclear Energy

Technology provider for the UIUC KRONOS research-reactor construction-permit application.

1 tracked project · High-temperature gas-cooled microreactor

Utility site sponsorDevelopment

Duke Energy

Applicant for the Belews Creek early site permit in North Carolina.

1 tracked project · Advanced-reactor site; design not selected

Utility owner, restart sponsor, and site developerReady

Constellation Energy

Leads the Crane restart and a DOE-backed New York Gen III+ SMR siting effort.

2 tracked projects · Existing large PWR and future Gen III+ SMR

Public-power site developerContractual

Nebraska Public Power District

DOE-selected applicant for a future Nebraska Gen III+ SMR early site permit.

1 tracked project · Gen III+ light-water SMR; design not selected

Utility owner and project sponsorReplication

Georgia Power

Largest owner of Vogtle Units 3 and 4, the first two U.S. AP1000 units in commercial operation.

1 tracked project · Gen III+ AP1000 pressurized-water reactor

Reactor technology providerNo tracked project

NuScale Power

Holds the only NRC-approved U.S. SMR design; ENTRA1 Energy is its exclusive commercial partner for plant development.

0 tracked projects · Integral pressurized-water SMR

Reactor technology providerNo tracked project

GE Vernova Hitachi

Developer of the BWRX-300, the design under NRC construction-permit review at TVA's Clinch River site and under construction at Darlington, Ontario.

0 tracked projects · Boiling-water SMR