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Pre-Application Activities for Advanced Reactors

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Below is a summary of all Advanced Reactor (non-LWR and LWR) applicants, vendors, and research/test reactors that have notified the NRC of their intent to engage, along with a history of those interactions.

The table of contents is arranged by technology and is linked to each applicant or vendors pre-application page.

The NRC guidance for these pre-application engagements is found in Appendix A of the Interim Staff Guidance DANU-ISG-2022-05, “Review of Risk-Informed, Technology-Inclusive Advanced Reactor Applications—Roadmap.” While this guidance focuses on non-light water reactor technologies, the document, especially the environmental sections, generally applies to all reactor technologies.

To be considered active, a vendor or applicant must either submit a Regulatory Engagement Plan (REP) or show a substantial history of pre-application interactions with the NRC. If no project activity (e.g., interactions with the NRC, updates to REPs, etc.) occurs for one year, the project will be deemed inactive.

High Temperature Gas Reactors

Light Water Reactors

Molten Salt Reactors / Molten Chloride Fast Reactors

Sodium Cooled Reactors

Other Designs/ Not Specified

Energy Northwest New Nuclear

Deep Fission

Abilene Christian University

Aalo Atomics

* Antares Nuclear, Inc.

General Atomics

GE-Hitachi BWRX-300

Kairos Power, LLC

ARC Clean Technology

Appalachian Power Company

General Atomics Electromagnetic Systems

Hadron Energy, Inc.

Natura Resources

Oklo Inc.

Blue Energy, Inc.

Radiant Industries, INC.

* Last Energy

TerraPower, LLC

TerraPower & GE - Hitachi Natrium

* Deployable Energy

* Terra Innovatum (SOLO)

REPLOY Power, Inc.

Terrestrial Energy USA, INC.

 

Duke Energy -  Belews Creek, NC

University of Illinois at Urbana-Champaign -  NANO Nuclear Energy Inc.

Rolls-Royce SMR Limited

  

Japan Atomic Energy Agency

X-Energy, LLC (XE-100)

SMR, LLC (Holtec)

  

Shepherd Power, LLC

X-Energy, LLC (XENITH)

Westinghouse AP300

  

Texas A&M University -  RELLIS Campus

    

Westinghouse eVinci

 

Inactive Projects - There are no Inactive Projects at this time.

* Indicates Microreactor Design

Page Last Reviewed/Updated Thursday, December 18, 2025

Page Last Reviewed/Updated Thursday, December 18, 2025