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India PFBR hits first criticality and joins Russia as elite commercial fast breeder reactor power
India
Published on 28 April 2026
Fuel efficiency flips the script with MOX breeder
India’s Prototype Fast Breeder Reactor at Kalpakkam reached first criticality on April 6, 2026, placing it alongside Russia as the second country to operate a commercial-level fast breeder reactor. The milestone begins Stage II of India’s three-stage nuclear plan, using MOX fuel to breed more fuel than it consumes and paving the way for a thorium-driven future.
- PFBR at Kalpakkam achieved first criticality on April 6, 2026
- India becomes the second nation after Russia to run a commercial fast breeder
- Stage II of the three-stage nuclear programme officially begins
- MOX fuel and breeding fuel strategy supports future thorium conversion
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This summarization was done by Beige for a story published on 
IndianWeb2