Wat?
Where are you getting this from? Europe is completely fine from electricity standpoint. Most are doing deals with countries that have nuclear plants. Finland isn’t rationing anything either.
But I just don't see it, I think governments in Europe would likely buy surplus US/Canada LNG ($$$) or scrable for extra gas from Norway/Qatar/Algeria instead of creating actual outages, specially considering how much coupling you have in EU power networks across countries. [0]
[0] https://en.wikipedia.org/wiki/Synchronous_grid_of_Continenta...
EU countries will have to budget accordingly to match the new cost of a failed Energy Policy based on hydrocarbon dependency. Hopefully this will accelerate the extinction of the Oil&Gas lobby, both for the environment of our future generations as well as our geo-political resilience.
In France (largest nuclear power producer) 50% of reactors are shut down for repairs right now, some are broken beyond repair. France is now net electricity importer.