Moscow was one of the initiators of the NSG decision and actively lobbied for its adoption, the Russian Foreign Ministry said in a statement.
On the eve of the NSG's September 6 decision, National Security Advisor M K Narayanan had called up his Russian counterpart Nikolai Patrushev to request more hectic lobbying by Russia amid uncertainty over the waiver which prevailed till the last moment.
"We are confident that the exception for India confirms the impeccable track record of New Delhi in non-proliferation affairs and will be a reliable guarantee of the peaceful use of nuclear exports to India," the statement said.
Russia is already completing two VVER-1000 nuclear reactors at Kudankulam nuclear power plant in Tamil Nadu with the total capacity of 2000 MW and in February last Moscow and New Delhi have inked an MoU for building four more such reactors.