April 11, 2012. Questions raised over its viability and security will delay the capacity addition of nuclear power generation, making it difficult to achieve the targetted 20,000 MW by 2020, says a Planning Commission Member. The current nuclear power generation capacity is 4,780 MW and the government had set a target of taking this capacity to 20,000 MW by 2020. At present, 20 nuclear power reactors are in operation and seven new reactors are under construction. Asked whether fuel is a constraint, Chaturvedi said, "Fuel is not a constraint."