Actually the video I watched directly talks about this being a major problem for Germany specifically.
Transcript: http://backreaction.blogspot.com/2022/08/no-sun-no-wind-now-...
Transcript: http://backreaction.blogspot.com/2022/08/no-sun-no-wind-now-...
> The German weather service estimates that it happens on the average twice each year, that the power production from wind and solar in Germany is less than 10% the expected average for at least 2 days. Every once in a while these situations can last a week or longer.