Project Overview
The U.S. Nuclear Regulatory Commission (NRC) is engaging in pre-application activities with Valar Atomics Inc. (Valar), a Torrance, California company developing high-temperature gas-cooled reactor (HTGR) technology. Valar is working on two DOE-related projects: the Ward250 reactor, which is authorized under the DOE Reactor Pilot Program and is now operating, and the NumenorOne HTGR, for which Valar has submitted a DOE authorization application under the DOE National Reactor Innovation Center Launch Pad U.S.A. pathway. Valar is pursuing a pre-application regulatory relationship with the NRC.
For more information, see the Valar pre-application documents Valar pre-application documents (NRC Docket: 99902185).
To subscribe to Valar Atomics updates via GovDelivery, select the appropriate Valar entry from the Advanced Reactors list after entering your email into the GovDelivery system.
Pre-Application Activities
| Product | Type | Reference | Status |
|---|---|---|---|
| Regulatory Engagement Plan for Antares – March 2026 | Regulatory Engagement Plan | ML26274A394 | No review requested |
| Regulatory Engagement Plan for Antares – Aug 2026 | Regulatory Engagement Plan | ML26224A415 | No review requested |
Contacts
| Contacts for the X-Energy Xenith Pre-Application Review | |
|---|---|
| Lead Project Manager | Maggie Chauhan |
| Contact a Public Affairs Officer | |