Deployments

U.S. reactor projects by technology, deployment stage, latest milestone, and next step.

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28of 28 records

ProjectStageLatest milestoneNext step

Natrium · Kemmerer Unit 1TerraPower / US SFR Owner · Kemmerer, WyomingGen IV · Large reactor · SFR

PhysicalConstruction permitted2026-04 · VerifiedSubmit and secure the separate NRC operating license before fuel loading or operationTerraPower and NRC Hermes 2Kairos Power · Oak Ridge, TennesseeGen IV · Test reactor · FHR

PhysicalConstruction underway2026-04 · VerifiedComplete nuclear construction, request operating licenses, then load fuel and testKairos Power and NRC Long Mott · Xe-100Long Mott Energy / X-energy / Dow · Calhoun County, TexasGen IV · SMR · HTGR

DevelopmentLicense review2026-05 · VerifiedComplete the safety review and obtain a construction permit; operation requires a later licenseNRC and Long Mott Energy Project PeleU.S. Department of Defense / BWXT · Idaho National LaboratoryGen IV · Microreactor · HTGR

PhysicalPrototype construction2024-09 · Government-reportedDeliver the reactor module, complete safety review, assemble, fuel, and begin testingDoD, BWXT, and DOE Idaho Operations Kaleidos · DOME testRadiant Industries / NRIC · Idaho National LaboratoryGen IV · Microreactor · HTGR

DevelopmentConditional test slot2025-07 · Government-reportedSatisfy readiness gates, complete authorization, install the experiment, and conduct testingRadiant, NRIC, and DOE Ward 250 critical experimentValar Atomics · Emery County, UtahExperimental / unclassified · Critical experiment · Design TBD

OperationalInitial criticality achieved2026-06 · Government-reportedTranslate test results into a powered design, licensing basis, customer project, and repeatable delivery planValar Atomics Aalo Critical Test ReactorAalo Atomics · Idaho National LaboratoryGen IV · Critical experiment · SFR

OperationalInitial criticality achieved2026-07 · Government-reportedBuild, license, fuel, and operate the separate 10 MWe Project Ascension reactor before claiming power deploymentAalo Atomics, DOE, and NRC Antares R1 Mark-0Antares Nuclear · Idaho National LaboratoryGen IV · Critical experiment · Heat-pipe

OperationalInitial criticality achieved2026-06 · Government-reportedComplete further testing and establish the NRC licensing and customer pathway for a power-producing reactorAntares Nuclear Groves pilot reactorAtomic Alchemy · Caldwell County, TexasExperimental / unclassified · Test reactor · Design TBD

DevelopmentDOE pilot development2026-01 · Government-reportedComplete the DOE safety basis, authorization, construction, and fuel-readiness gates before operationAtomic Alchemy and DOE Idaho Operations Deep Fission DBR pilotDeep Fission · Site not disclosed by DOEExperimental / unclassified · Microreactor · LWR · PWR

DevelopmentDOE pilot development2026-01 · Government-reportedDisclose and authorize a site, complete the safety basis, and demonstrate construction and fuel readinessDeep Fission and DOE Idaho Operations PWR-5 pilot reactorLast Energy · Texas A&M RELLIS Campus, TexasGen III+ · Microreactor · LWR · PWR

DevelopmentDOE pilot development2026-01 · Government-reportedComplete site authorization, safety analysis, construction, and operating readiness under DOE oversightLast Energy and DOE Idaho Operations Aurora pilot reactorOklo · Idaho National LaboratoryGen IV · Microreactor · SFR

DevelopmentDOE pilot development2026-01 · Government-reportedComplete DOE authorization, site work, construction, fuel readiness, and critical testingOklo and DOE Idaho Operations Pluto pilot reactorOklo · Savannah River Site, South CarolinaGen IV · Test reactor · SFR

DevelopmentDOE pilot development2026-01 · Government-reportedComplete DOE authorization, fuel-facility integration, construction, and critical-test readinessOklo and DOE Idaho Operations Natura pilot · ACUNatura Resources / Abilene Christian University · Abilene Christian University, TexasGen IV · Test reactor · MSR

DevelopmentDOE pilot development2026-01 · Government-reportedComplete the DOE authorization basis, site work, construction, fuel loading, and operating readinessNatura Resources, ACU, and DOE Idaho Operations Kaleidos + RiPPer pilotRadiant Industries · Idaho National LaboratoryGen IV · Microreactor · HTGR

DevelopmentDOE pilot development2026-01 · Government-reportedComplete DOE authorization and readiness gates for construction, fuel loading, and critical testingRadiant Industries and DOE Idaho Operations TETRA-1 pilot reactorTerrestrial Energy · Texas A&M RELLIS Campus, TexasGen IV · Test reactor · MSR

DevelopmentDOE pilot development2026-01 · Government-reportedComplete DOE authorization, site work, fuel preparation, construction, and critical-test readinessTerrestrial Energy and DOE Idaho Operations Unity critical experimentDeployable Energy · Idaho National LaboratoryExperimental / unclassified · Critical experiment · Design TBD

OperationalInitial criticality achieved2026-07 · Government-reportedTranslate the experiment into a licensed power design, customer project, fuel plan, and repeatable commercial delivery processDeployable Energy, DOE, and NRC RELLIS advanced-reactor siteTexas A&M University System · Bryan, TexasExperimental / unclassified · Test reactor · Design TBD

PreliminaryNRC pre-application engagement2026-02 · VerifiedSelect the site envelope and reactor assumptions, then submit a complete early site permit applicationTexas A&M University System and NRC Clinch River · BWRX-300Tennessee Valley Authority / GE Vernova Hitachi · Oak Ridge, TennesseeGen III+ · SMR · LWR · BWR

DevelopmentConstruction-permit review2025-07 · Government-reportedComplete NRC safety review and obtain the construction permit before nuclear constructionTVA and NRC Pioneer Units 1 & 2 · SMR-300Palisades SMR / Holtec International · Covert, MichiganGen III+ · SMR · LWR · PWR

DevelopmentPhased permit review2026-02 · VerifiedObtain the limited-work authorization and complete the remaining construction-permit application and reviewsPalisades SMR and NRC eVinci DOME experimentWestinghouse · Idaho National LaboratoryExperimental / unclassified · Microreactor · Heat-pipe

DevelopmentConditional DOME selection2025-07 · Government-reportedComplete DOE authorization, experiment fabrication, fuel readiness, and DOME schedulingWestinghouse, NRIC, and DOE UIUC · KRONOS MMRUniversity of Illinois / NANO Nuclear Energy · Champaign County, IllinoisExperimental / unclassified · Microreactor · HTGR

DevelopmentConstruction-permit application2026-03 · VerifiedPass NRC acceptance and technical review, then obtain a construction permitUniversity of Illinois, NANO Nuclear Energy, and NRC Belews Creek early site permitDuke Energy · Stokes County, North CarolinaExperimental / unclassified · SMR · Design TBD

DevelopmentEarly site permit review2026-02 · VerifiedComplete NRC safety and environmental reviews and obtain the early site permitDuke Energy and NRC New York Gen III+ SMR sitingConstellation SMR Development · New York; site not yet publicGen III+ · SMR · LWR · design TBD

ContractualFederal siting award selected2026-05 · Government-reportedName the site and design, execute the award, and submit a complete NRC early site permit applicationConstellation SMR Development and DOE Nebraska Gen III+ SMR sitingNebraska Public Power District · Nebraska; site not yet publicGen III+ · SMR · LWR · design TBD

ContractualFederal siting award selected2026-05 · Government-reportedName the site and design, execute the award, and submit a complete NRC early site permit applicationNebraska Public Power District and DOE Crane Clean Energy Center restartConstellation Energy · Londonderry Township, PennsylvaniaGen II · Large reactor · LWR · PWR

ReadyFinance closed; licensing active2026-06 · VerifiedComplete NRC licensing actions, restore plant systems, pass restart inspections, and receive approval to resume power operationsConstellation Energy and NRC Molten Chloride Reactor ExperimentSouthern Company / TerraPower / Idaho National Laboratory · Idaho National LaboratoryGen IV · Test reactor · MSR

PhysicalFuel production underway2025-12 · Government-reportedComplete fuel production, install the experiment in LOTUS, obtain authorization, and begin the planned test campaignINL, Southern Company, TerraPower, and DOE Vogtle Units 3 & 4Georgia Power / Southern Nuclear / Westinghouse · Waynesboro, GeorgiaGen III+ · Large reactor · LWR · PWR

ReplicationTwo repeat units in commercial operation2024-04 · Company-reportedTranslate the completed two-unit delivery into repeat AP1000 orders with demonstrated cost and schedule learningWestinghouse, U.S. utilities, owners, and suppliers