I looked up on this topic a year ago, and it seemed that renewal energy has become so cheap that it was just cheaper to overproduce solar/wind and move water around to store the energy as potential energy. That and given the timings of a nuclear center* versus a solar farm, it rather seems counterproductive.

• It takes years from creating and contructing a nuclear reactor (i think around one decade?) if you don’t already have a blueprint of them.