"New nuclear capacity of 3.3 gigawatts (GW) in 2017 was outweighed by lost capacity of 4.6 GW. Over the past 20 years, there has been modest growth (12.6%, 44 GW) in global nuclear power capacity if reactors currently in long-term outage are included. However, including those reactors ... in the count of ‘operable’ or ‘operational’ or ‘operating’ reactors is, as former WNA executive Steve Kidd states, 'misleading' and 'clearly ridiculous'."
- #JimGreen, 2018
https://energypost.eu/nuclear-power-in-crisis-welcome-to-the-era-of-nuclear-decommissioning/
Nuclear power plants are not mushrooms that just grow here and there, they are being built as result of particular policy decisions. So looking at which energy source is better based on "how much capacity was installed" is a bit like planting wheat on a field and saying "no rye has grown, so it obviously sucks".