However, the two countries could not finalise a general framework agreement and the credit protocol for Kudankulam Units 5 and 6 which they decided to do so by the end of this year.
Prime Minister Narendra Modi and Russian President Vladimir Putin today also dedicated to the nation the second unit of Kudankulam nuclear plant at a function here after the two leaders held extensive bilateral talks.
A joint statement issued after the talks said Russia strongly supported India's early entry into the Nuclear Suppliers Group (NSG) and welcomed India's accession to the Hague Code of Conduct against Ballistic Missile Proliferation and the Missile Technology Control Regime.
It also said there has been progress in discussions on the General Framework Agreement and the Credit Protocol for Kudankulam Units 5 and 6 with a view to finalise these documents before the end of 2016.
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Unit two was dedicated and foundation of two more units of the Kudankulum plant was laid which was witnessed by Modi and Putin through video conferening.
In his media statement in presence of Putin, Modi said dedication of Kudankulum 2 and laying of foundation of unit 3 and 4 reflected "tangible results" of India-Russia cooperation in the Civil Nuclear Energy sector.
"And, with proposed construction of another eight reactors, our wide ranging cooperation in nuclear energy is set to bring rich dividends for both of us. It also fits in with our needs of energy security, access to high technology and greater localisation and manufacturing in India," he said.
The joint statement said both sides affirmed that their successful nuclear energy cooperation is one of the most tangible and substantive aspects of their strategic partnership.
It said the two sides reaffirm their intention to further expand cooperation under the 'Strategic Vision to Strengthen Cooperation in the Peaceful Uses of Atomic Energy' signed on December 11, 2014.
"In this context they noted with satisfaction a series of positive developments marked in their civil nuclear cooperation this year, including attainment of full power capacity of Kudankulam Unit 1, integration with electricity grid of Kudankulam Unit 2, commencement of the site work for Kudankulam Units 3 and 4," it said.