According to World Nuclear Industry Status Report 2017, India with six installed nuclear reactors ranks third in world, while China is leading at 20 installed nuclear reactors.
Decline in Nuclear Reactors: The number of nuclear reactor units under construction is declining globally for fourth year in a row, from 68 reactors at end of 2013 to 53 by mid-2017. Most nuclear reactor constructions are behind schedule, with delays resulting in increase in project costs and delay in power generation.