India’s PFBR achieves criticality, marks entry into stage-II nuclear programme

India's first Prototype Fast Breeder Reactor at Kalpakkam has achieved criticality. This marks a major milestone in the nation's three-stage nuclear program. The reactor is designed to produce more fuel than it consumes. This advancement is crucial for harnessing India's vast thorium reserves. Commercial operation is expected by late 2026 or early 2027, promising long-term energy security.