[realusername]

In today's world ran by fossil fuels, there's not a need to turn off the non fossil fuel production, there's always more parts of the economy willing to get cheap electricity.

What matters then is the reliability and this is why the capacity factor and especially its variation are critical. See what happened in the EU when the russian gas turned off.

Batteries are a low scale solution at best at the moment anyways and aren't working at the scale of a grid.