It's distribution rather than generation which is the problem. Offshore wind farms generate copious electricity and then because of lack of interconnects they end up being paid to switch off on the windiest days. This will all be solved as more infrastructure is built.
There’s a chicken/egg problem, and in practice transmission will always lag generation; you’ll never speculatively build transmission, but even before transmission upgrades happen a wind or solar farm can usually partially operate.
Or charge the EVS when the sun shines and the wind blows. Today you don't really need to charge your EV that often.