Companies / org-triso-x
TRISO-X, LLC
X-energy's wholly owned fuel-fabrication subsidiary, with an ORNL pilot facility and a commercial campus at Oak Ridge, Tennessee. Its July 2026 announcement reports an $11 million Tennessee expansion grant. In August it reported acquiring approximately 70 adjacent acres and extending ORNL research for 30 months. TX-1's primary building structure was completed in September 2026, with equipment and interior work following. A potential TX-2 remains planned. These milestones do not establish commercial fuel production or completed fuel qualification.
- Roles
- Manufacturer, Vendor
- Organization type
- vendor
- Country
- United States
- Aliases
- —
- Listing status
- Unknown
- Exchange / ticker
- —
- Ownership / control
- Unknown
The August2026 primary release identifies TRISO-X, LLC as wholly owned by X-Energy, Inc. The parent's Nasdaq listing is not assigned to this subsidiary. - Website
- —
- Confidence
- medium
- Record reviewed
- 2026-10-17 (record review date, not proof of current activity)
Linked designs
- No designs tracked here.
Tracked deployment projects
0 linked project records. These include proposals and historical cancelled or suspended plans; the count is not reactors built. Stages are the last recorded classifications, not proof of current activity. A recorded operator/host field does not by itself establish who will operate a reactor. A project without a recorded regulatory action is not necessarily without permission.
- No projects tracked here.
Programmes and agreements (1)
Plans, agreements, studies and government programmes that name this organization as a participant. They are not deployment projects and are not counted above.
- TRISO-X–ORNL fuel-research agreement extension — Research programme · Active · announced 11 Aug 2026
Recorded role: Developer or vendor
Ownership & relationships
- X-Energy, Inc. — wholly_owned_subsidiary_of · as of 2026-08-11. The primary research-agreement release explicitly identifies this subsidiary relationship.
Milestones
- None recorded in this release.
Organization-level unresolved information
- None noted for this organization; linked projects may still have open evidence.
Sources
- TRISO-X: ORNL fuel-research agreement extension (company_primary, published 11 Aug 2026, accessed 2026-10-17)
- TRISO-X: Tennessee fuel-campus grant announcement (company_primary, published 15 Jul 2026, accessed 2026-10-17)
- TRISO-X: Oak Ridge campus land acquisition (company_primary, published 4 Aug 2026, accessed 2026-10-17)
- X-energy: TRISO-X completes TX-1 vertical construction (company_primary, published 24 Sep 2026, accessed 2026-10-16)