There are countries like France who are generating 75-80% through Nuclear and Japan is producing about 40% through nuclear. No Nuclear is clearly proven isn’t it? USA also produces 15% of it’s energy through nuclear.
Your next paragraph is actually one of the reasons why India has to go for this deal. The facts you give are twisted and made up by someone. Please check those before pasting it everywhere. By 2020, Nuclear will be 7-8% and by 2050 25% or so.
