With supplies from a new uranium mine and processing facility at Tummalapalle in Andhra Pradesh set to commence later this year, the capacity factor of the 20 operational nuclear reactors, adding up to an installed capacity of 4,780 MWe, is now projected to top 80 per cent in 2012-13, according to latest estimates drawn by the Department of Atomic Energy. Uranium imports from Russia, France and Kazakhstan have already helped half the nuclear fleet achieve near-optimal operations.

Just five years ago, in 2006-07, the capacity factor was 64 per cent, but plummeted to 50 per cent in 2008-09. (The capacity factor of a power plant is the ratio of the actual output over a period of time to its output, if operated at full potential, during the period.) It bounced back to 61 per cent in 2009-10 and increased further to 71 per cent in 2010-11. In the first nine months of this fiscal, it has reached 78 per cent.

This marks a complete turnaround from the uranium shortage that stymied nuclear power generation for much of the second half of the last decade. Fuel imports from the three countries that supply uranium to India are now actually more than what is required by the ten reactors that have been put under international safeguards.