Nuke deal can provide 20% of energy requirement in present form if build enough reactors. 20 years later when there is no coal left in india then we have to heavily depend up on this nuke energy. And if USA is making an alliance against china then we have to join then as china is our strong enemy, they are openly claiming our territory. Already they captured deep in to the Indian territory. They pretended us a friends and attacked us suddenly in 1964 we cannot trust our neighbors and communists.