> Renewables need to be combined with power sources that can be turned on and off quickly and on demand. Do most fossil fuel power plants currently serve that

> Renewables need to be combined with power sources that can be turned on and off quickly and on demand. Do most fossil fuel power plants currently serve that purpose? Only running when there is excess demand, instead of continuously? As long as the answer is 'no', there is no reason to prefer them over nuclear (even ignoring the ways nuclear could be made to load-follow).