India's Prototype Fast Breeder Reactor Attains First Criticality

India's 500 MWe Prototype Fast Breeder Reactor achieved first criticality on April 6, 2026, marking a milestone in nuclear energy development.
The reactor uses indigenous Uranium-Plutonium Mixed Oxide fuel technology developed by IGCAR and built by BHAVINI.
Fast Breeder Reactors enable greater fuel utilization by converting Uranium-238 to Plutonium-239 and preparing for thorium-based future reactors.
The achievement demonstrates India's advanced nuclear engineering capabilities and supports long-term clean energy security.