India’s fast breeder reactor attains criticality: Why it matters | Nuclear Energy | Plutonium

India has hit a major nuclear milestone. At Kalpakkam, the Prototype Fast Breeder Reactor (PFBR) has attained criticality — a key step before full power generation. But why does this matter? In this video, we explain how fast breeder reactors work, how they create more fuel than they consume, and why this technology is central to India’s long-term energy strategy. With limited uranium and vast thorium reserves, India is using this approach to boost energy security and generate clean, reliable power. We also look at how India compares globally with countries like Russia and China.