Designs / dsn-megalvin
MegAlvin
MegAlvin is Stellaria's planned 10 MWe molten-salt prototype, a bridge between the Alvin experiment and the commercial Stellarium. Stellaria plans to operate it from about 2032 by modifying the Alpha installation at CEA Cadarache after Alvin's programme; the April 2026 letter of intent with CEA covers a feasibility study only, not a permission.
- Class
- SMR
- Technology
- Molten salt reactor (MSR)
- Coolant
- unknown
- Spectrum
- unknown
- Developer / vendor(s)
- Stellaria
- Module electrical
- 10 MWe (nameplate (gross/net unspecified))
- Inclusion basis
- smr_by_vendor_claim_with_capacity_check
- Confidence
- medium
- Last verified
- 2026-10-14
Tracked deployment projects
- No projects tracked here.
Design sources
- Stellaria, CEA to consider experimental MSR at Cadarache (reputable_press, published 27 Apr 2026, accessed 2026-10-14)
- Stellaria: INB Alpha programme and experimental configurations (company_primary, published 23 Apr 2026, accessed 2026-10-13)