Parliament Question: Nuclear Power Programme—Three-stage programme, PFBR first criticality and thorium utilisation; hydrogen production using nuclear heat
DAE’s three-stage nuclear programme: PFBR first criticality (April 2026), thorium-to-U-233 R&D, and clean hydrogen using nuclear heat (Cu–Cl, June 2026)
- DAE presents the three-stage nuclear power programme as a closed fuel cycle that combines uranium use in PHWRs, plutonium-driven fast breeder operation, and thorium-to-U-233 breeding for long-term energy security.
- DAE reports PFBR first criticality timing and links it to paving the way for the programme’s third stage.
- DAE states thorium utilisation R&D includes thoria use in initial PHWR cores and reprocessing of irradiated thoria pins to obtain U-233 for the KAMINI reactor fuel.
- DAE reports that FBTR-based integration of the Cu–Cl thermochemical cycle with FBTR secondary sodium heating loop produced carbon-free hydrogen, described as a demonstrated technology milestone.
What happened
The Department of Atomic Energy (DAE) reported two milestone updates under India’s nuclear energy roadmap. The indigenously designed Prototype Fast Breeder Reactor (PFBR) achieved first criticality in April 2026 (First Criticality recorded on 6 April 2026 at 08:20 pm). In parallel, DAE highlighted a milestone clean hydrogen production demonstration using nuclear heat at the Fast Breeder Test Reactor (FBTR) via the Copper–Chlorine (Cu–Cl) thermochemical cycle, reported as achieved on 26 June 2026.
Background and earlier position
UPSC can frame the issue as balancing long-term energy security and strategic autonomy through a closed fuel cycle (PHWR→FBR→thorium-based U-233 pathway) while demonstrating near-term relevance via nuclear-assisted hydrogen production for decarbonising hard-to-abate sectors. The policy challenge is readiness: neutron economy, fuel fabrication/reprocessing maturity, and staged regulatory steps.
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