Projects / prj-inl-marvel
MARVEL microreactor test bed at INL's TREAT facility
DOE test reactor: an 85 kWt test-bed microreactor, not a commercial plant. DOE plans installation in INL's TREAT facility, with dry criticality expected in 2027 and full power in 2028; its preliminary safety analysis was approved in 2026.
- Stage
- Construction
- Design
- MARVEL (Microreactor)
- Technology
- Other · unknown
- Operator(s)
- Idaho National Laboratory
- Vendor(s)
- Idaho National Laboratory
- Location
- TREAT facility, Idaho National Laboratory · United States · precision: undisclosed
Searchable without an invented map pin. - Coordinates
- undisclosed / not plotted
- Electrical capacity
- — · scope: plant
- Thermal capacity
- 0.085 MWth (nameplate_unspecified)
- Modules planned
- 1
- Inclusion basis
- microreactor_labeled
- Confidence
- medium
- Last verified
- 2026-10-02 (publication/verification date)
Milestones & dated events
- No dated milestones recorded yet.
Regulatory actions
- None recorded in this release.
Sources
- DOE: MARVEL microreactor project (government_primary, accessed 2026-10-02)
- NEI: MARVEL cleared for dry criticality (reputable_press, accessed 2026-10-02)