Why in News?
India has reached a significant milestone in its nuclear energy programme as the first indigenous Prototype Fast Breeder Reactor (PFBR) at Kalpakkam, Tamil Nadu, has achieved criticality. This marks a major step towards energy security and efficient utilization of nuclear fuel resources.

What is ‘Criticality’?
- It indicates that the reactor is operational and ready for controlled power generation.
- Criticality refers to the stage when a nuclear reactor sustains a self-sustaining chain reaction.
About India’s PFBR at Kalpakkam
- Location: Kalpakkam, Tamil Nadu
- Capacity: 500 MWe
- Type: Prototype Fast Breeder Reactor (PFBR)
- Developed by: BHAVINI (Bharatiya Nabhikiya Vidyut Nigam Limited
To know more about Fast Breeder Reactor, Click here
