Varying consumer demand can easily be matched by nuclear power. They can run gradients as high as gas turbines, but it's not good to go really low quickly becau

Varying consumer demand can easily be matched by nuclear power. They can run gradients as high as gas turbines, but it's not good to go really low quickly because frequent and rapid adjustments in a nuclear reactor's output can lead to increased wear and tear. France is doing a really good job of matching demand and supply with their fleet.