Concentrate on production of clean energy: Kalam

"We have to give attention in producing clean energies like solar, wind and nuclear," he said in response to a query on nuclear power plants.

He said every one litre of petroleum fuel burnt generates 2 kg of carbon dioxide, but nuclear reactors do not produce any pollution.

Over 540 nuclear reactors are functioning successfully the world over and there was no need for any anxiety on it, Kalam said in significant remarks against the backdrop of the protests against the commissioning of the Kudankulam Nuclear Power Plant in Tamil Nadu.

Kalam, here to inaugurate a seminar, organised by the Indian Naval Academy, said, "We have to effectively use non-conventional energy sources instead of petroleum fuels and coal for producing energy."