'More nuclear power plants at additional sites are also planned. However, details are not yet finalized,' Chavan added.

Of the country's installed nuclear power capacity of 4,120 MW, 320 MW is based on light water reactors and the balance 3,800 MW is based on heavy water reactors.

The installed capacity will reach 7,280 MW by 2011 by completion of projects under construction, Chavan said, adding: 'More reactors, both of indigenous designs and based on international co-operation are planned to increase the nuclear power capacity.'

'The tariffs of nuclear power are competitive with that of coal fired thermal power stations at locations away from coal mines. In addition nuclear power is clean and environment friendly, as it has no greenhouse gas emissions,' Chavan added.