The UK is well suited to wind power, already has many wind turbines, and continues to install more. We have a good amount of solar panels too. Renewables provide the majority of electrical power when conditions are good and the share will only increase. Electric vehicles avoid the biggest weakness of renewables (unreliable base load), because they can be set to charge unattended when cheap electricity is available. Electricity suppliers offer variable rate tariffs specifically for electric vehicles.

You start running numbers the cost of solar and wind capacity to power an electric car is about 10% of the purchase price. And considering they have a battery that can store a weeks worth of energy and spend 95% of the time just sitting. Basically not a problem.