I think it's pretty common. I'm not an expert but I think most of France's grid is run that way. Wikipedia has a few details: https://en.wikipedia.org/wiki/Loa

I think it's pretty common. I'm not an expert but I think most of France's grid is run that way. Wikipedia has a few details: https://en.wikipedia.org/wiki/Load_following_power_plant#Nuclear_power_plants https://en.wikipedia.org/wiki/Load_following_power_plant#Nuc...