As on February, 2017, there are 21 nuclear power plants which are operational in the country with a total installed capacity of 5780 MW. In addition, the second unit of Kudankulam KKNPP-2 (1000 MW) is connected to the southern grid and is presently generating infirm (non-commercial) power.
There are presently four reactors with a capacity of 2800 MW under construction and the construction of five more reactors capacity of 3900 MW has also commenced. On their progressive completion, the capacity will reach 13480 MW.
The Pressurised Heavy Water Reactors (PHWRs) are fuelled by Natural Uranium while Light Water Reactors (LWRs) are fuelled by Low Enriched Uranium.
The annual requirement of fuel (UO2) of a 700 MW PHWR (at 85% Capacity Factor) is about 125 tons and that of a 1000 MW LWR (at a capacity factor of 90%), about 25 tons.
Prototype Fast Breeder Reactor (PFBR) being implemented by Bharatiya Nabhikiya Vidyut Nigam Limited (BHAVINI) is fuelled by Mixed Oxide (MoX) Fuel.