With the Kudankulam Nuclear Power Project likely to be commissioned in August, Russia has agreed to extend a $3.4-billion credit for setting up two more 1,000-MW atomic power plants at the same site in Tamil Nadu.

The two nations signed a protocol on Tuesday in Moscow for financing units 3 and 4 of the Kudankulam project, under which the Russian Federation will extend export credit amounting up to $3.4 billion for 85 per cent of the value of works, supplies and services provided by the Russian organisations for the two units.