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 | ML23317A095 | No review requested |
| May 1, 2024, Public Meeting Slides | Presentation | ML24108A117 | No review requested |
| Principal Design Criteria | Topical Report | ML24117A263 (Rev 1) ML24351A229 (Rev 2) |
Under Review |
| Analytical Methods | Topical Report | ML24194A130 | Under Review |
| Concept of Operations | White Paper | ML24229A071 | Feedback provided (ML24305A218) |
| XENITHTM Micro-Reactor 2024 Pre‑Application Regulatory Engagement Plan | Regulatory Engagement Plan | ML25010A374 | No review requested |
| Transportation and Logistics | White Paper | ML25022A317 | Under Review |
Page Last Reviewed/Updated Tuesday, February 18, 2025
Page Last Reviewed/Updated Tuesday, February 18, 2025