That just isn't true - there's been plenty of times where eg the UK is generating wind power at just a few percent of total capacity because of low wind. And it just is not unusual for periods of calm in the UK to also be calm in neighbouring countries.

Even at a continental level, and averaged out over months long periods, wind is pretty variable and unpredictable: https://theconversation.com/what-europes-exceptionally-low-w... - if you look there we can see that wind power generation at a European level was down 32% on long term average over summer and autumn 2021.

That's not what that article says, but even if it was it would imply a need of only x1.47 not x100:

"""For instance, UK-based power company SSE stated that its renewable assets produced 32% less power than expected."""

(SSE being initials for "Scottish and Southern Energy").