Wind goes pretty much to zero on certain days (like 3%). You don't solve that by overprovisioning. There is also quite a high correlation with the weather acro

Wind goes pretty much to zero on certain days (like 3%). You don't solve that by overprovisioning. There is also quite a high correlation with the weather across Europe, and when it is windy in the UK, chances are it is also windy in most of the major countries the UK could export energy to. As for nuclear, again, it doesn't make sense to use it to compensate for wind. Just make it run whether the wind blows or not, and save the cost of a wind farm.