PFBR Reaches Criticality Successfully
India’s Prototype Fast Breeder Reactor achieved criticality on April 6, 2026, marking a historic milestone in advanced nuclear technology and energy independence journey.
Controlled Nuclear Chain Reaction Start
Criticality means the reactor starts a stable nuclear chain reaction where energy production becomes self-sustaining, proving that the system works as designed safely.
Second After Russia Globally
With PFBR, India becomes the second country after Russia to operate commercial fast breeder reactor technology, showing strong technological capability and long-term commitment.
25 Percent Global Reserves Available
India has huge thorium reserves but limited uranium, making thorium-based nuclear energy crucial for long-term sustainable and independent power generation.
Thorium Can Power India Long
India’s thorium reserves can generate electricity for centuries, reducing dependence on imports and ensuring stable long-term energy supply for the country.
Creates More Fuel Than Uses
Fast breeder reactors produce more nuclear fuel than they consume by converting uranium into plutonium, making energy generation more efficient and sustainable.
High Efficiency Heat Transfer Used
The PFBR uses liquid sodium instead of water as coolant, allowing high temperature operation and efficient energy transfer without slowing down neutrons.
Roadmap To Thorium Power Future
India’s nuclear program moves from uranium to plutonium and finally thorium, ensuring a complete energy cycle for long-term independence and sustainability.
PFBR Capacity And Specs
The PFBR has 500 megawatt capacity and uses advanced design, proving India’s ability to build complex nuclear systems with indigenous technology and expertise.
Testing Then Power Generation Soon
After criticality, the reactor will undergo testing before connecting to the power grid, marking the next step toward full commercial electricity production.