Spotlight
XENITH
Project Overview
The U.S. Nuclear Regulatory Commission (NRC) is currently engaged in preapplication activities with X Energy, LLC. (X-energy), starting in November 2023. X-energy is a Rockville, MD company designing the X-Energy Next-Generation Integrated Transportable High-Temperature (XENITHTM) Microreactor Plant – Point Design, which is a high temperature gas cooled reactor. The XENITHTM design is between 3 to 10 MWe.
For more information, please see the XENITH pre-application documents (NRC Docket 99902118)
To subscribe to the X-energy XENITHTM email service, select “X-Energy XENITH” from the Advanced Reactors list after entering your email into the GovDelivery system.
Pre-Application Activities
Product | Type | Reference | Status |
|---|---|---|---|
XENITHTM Micro-Reactor 2023 Pre‑Application Regulatory Engagement Plan | Regulatory Engagement Plan | No review requested | |
May 1, 2024, Public Meeting Slides | Presentation | No review requested | |
Principal Design Criteria | Topical Report | ML24117A263 (Rev 1) | Under Review |
Analytical Methods | Topical Report | Under Review | |
Concept of Operations | White Paper | Feedback provided | |
XENITHTM Micro-Reactor 2024 Pre‑Application Regulatory Engagement Plan | Regulatory Engagement Plan | No review requested | |
Transportation and Logistics | White Paper | Under Review |
Contacts
Contacts for the X-Energy Xenith Pre-Application Review | |
|---|---|
Lead Project Manager | |
Contact a Public Affairs Officer | |
Page Last Reviewed/Updated Thursday, December 11, 2025
Page Last Reviewed/Updated Thursday, December 11, 2025