[cm2187]

Looking at peak wind isn't particularly helpful I'm afraid. The problem is what happens when there is no wind, like in early May (https://gridwatch.co.uk/). Having more wind capacity isn't helping. Batteries are for smoothing minutes/hours not days. Solar obviously only a few hours a day and weak at this latitude.

[fpoling]

Modern solar work nicely in UK in May-August when wind is weakest due to long hours and cooler weather. However one needs more expensive panels that also work on a cloudy days.

Then in UK somebody calculated that a house needs 1MWh battery to last over winter using only solar panels that a typical suburb house can install. In 5-10 years that would cost 40K USD making it rather realistic to have. This ignore availability of industrial-scale wind which is the strongest in winter.