Projects / prj-loki-mmr-dome-inl
Pylon / LOKI MMR experiment proposal for INL's DOME
Test reactor proposal. DOE funded Ultra Safe Nuclear in 2023 to design a Pylon microreactor experiment for INL's DOME test bed; Pylon was not chosen for the 2024 second phase. NANO Nuclear, which bought and renamed the design LOKI MMR, said in January 2025 it aimed to demonstrate it in DOME by 2027. NRIC's October 2026 DOME queue does not include it, so the demonstration is unconfirmed.
- Stage
- Announced
- Design
- LOKI MMR (Microreactor)
- Technology
- High-temperature gas-cooled reactor (HTGR) · unknown
- Operator(s)
- —
- Vendor(s)
- NANO Nuclear Energy
- Location
- DOME test bed, Idaho National Laboratory · United States · precision: approximate
Same OSM EBR-II/DOME point as the Kaleidos DOME record; DOE names the DOME facility as the host of the conditional eVinci test, and DOME is the repurposed EBR-II containment at MFC. Geocode: OSM Overpass (overpass-api.de) name search in the INL bbox returned way 741322317 'Experimental Breeder Reactor-II (EBR-II)' (power=generator, operator=Idaho National Laboratory), centre 43.59507, -112.65716, inside way 741322316 'Materials - Coordinates
- 43.59507, -112.65716
- Electrical capacity
- — · scope: module
- Thermal capacity
- —
- 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: awards $3.9 million for advanced reactor experiment designs (government_primary, accessed 2026-10-02)
- DOE: awards $5 million for second phase of advanced reactor experiment designs (government_primary, accessed 2026-10-02)
- NANO Nuclear: announces LOKI MMR as the tradename for its acquired Pylon design (company_primary, accessed 2026-10-02)
- ANS: Deployable Energy next in line for testing in NRIC's DOME (reputable_press, accessed 2026-10-02)