> Don’t have the number in my head

That’s because it’s weeks, if not months, in places that have actual seasons.

> moving load around to avoid the “worst case,”

There is no such thing with base load in winter. You either provide constant heating or people freeze.

There are places where rearranging the chairs works and there are places where it doesn’t.

There hasn‘t been a single day in Germany last year where renewable energy dropped below 30% of consumption. So overbuilt geographically dispersed systems can handle a very wide range of weather conditions, even without battery and hydrogen storage taken into account.

German grid must be very low in terms of CO2 emissions then, right? Not just marginally better than neighbouring Poland?