Designs / dsn-ssr-thermal-spectrum

Stable Salt Reactor - Thermal Spectrum (SSR-U with optional SSR-Th blanket)

Moltex Energy's static-fuelled, graphite-moderated thermal molten salt reactor, listed in the IAEA's 2018 SMR booklet as SSR-U with an optional thorium breeding blanket (SSR-Th): 750 MWt and 300 MWe as a baseload plant, or 900 MWe as a peaking plant using thermal storage. Not the existing fast-spectrum SSR-W, and not shown to be the later 40 MWt SSR-U of MoltexFLEX. This dated design profile does not establish current development, a deployment site or any regulatory permission.

Source snapshot: 2018 (edition or document date of the cited source). Source review does not establish current availability or a deployment.

Class
SMR
Technology
Molten salt reactor (MSR)
Coolant
molten_salt
Spectrum
thermal
Developer / vendor(s) as of 2018
Moltex Energy
Module electrical
300 MWe (nameplate (gross/net unspecified))
Module thermal
750 MWth (nameplate_unspecified)
Inclusion basis
smr_by_design_class
Confidence
medium
Last verified
2026-10-03

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