New Delhi - Russia's state-owned Rosatom said it would supply 12 nuclear energy reactors for India over 20 years, under an agreement aimed at boosting nuclear energy co-operation signed by the two countries during a summit in New Delhi on Thursday.
A 1 000-megawatt reactor is operating at the Russian-built Kudankulam power station in India's Tamil Nadu province, with a second due to come on-stream in 2015.
Russian President Vladimir Putin had been pushing for Rosatom to increase the number of reactors it could supply to as many as 25.
Indian officials say a total of six reactors will be built at Kudankulam, with a further six to follow at a site that has not yet been determined.