I don't believe that's relevant? Unless someone starts selling and building cost-effective and large-scale storage here and now, nuclear and fossil fuels are the only reliable options that will fix the current situation.

Fixing this with trans-European energy transfers is a neat idea, but if you want to send power from i.e. a solar panel on a roof in Spain to my house in Finland, or wind energy from Denmark to Poland, then we'll require infrastructure upgrades at scales that haven't been seen in much of Europe since the early 50's.