In-depth studies petition that "the European energy system would strongly profit from exploiting the implications of these regimes for continent-scale wind generation patterns." https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5540172/ and "Such a pan-European wind power system would provide a stable output across a wide range of large-scale weather conditions" "but also requires enhanced transmission". This enhanced european grid network benefits to other forms of power production and is already planed. https://www.researchgate.net/publication/318476478_Balancing... https://www.sciencedirect.com/science/article/pii/S136403211...
There are ways to reduce loss induced by long powerlines, mainly HVDC ( https://en.wikipedia.org/wiki/High-voltage_direct_current )
All this is also true for solar, and there is even at least one megaproject: https://www.suncable.sg/