Here is the full list of all 10 Nuclear Power Station Creator achievements.
Build the first reactor unit
Build a second NPP
Build a NPP in each region
Provide energy to all cities on the map
Equip the reactor with the most advanced components
Reach final date
Ensure that there are at least 3 mega-cities in each region
Have 3 reactor units at one NPP
Build 12 pools
Build 12 cooling towers