Indeed, and it is better at continental scale: https://www.imperial.ac.uk/news/180592/european-cooperation-...

France, albeit enjoying even better offshore wind potential than the UK, is even worse as it only starts to deploy turbine fleets.

Renewable are boosted by interconnected grids, it's probably always going to be sonny or windy somewhere.

But with Brexit, UK has lost out on potentially being a large exporter of power to Europe, the same way the French do with their excess nuclear power.

Numerous non UE members sell electricity to members (Norway, Iceland, Switzerland, Ukraine...), including the United Kingdom.