The offshore wind farm at Robin Rigg is a prominent feature in the view from north-west Cumbria. I've looked up its statistics
https://en.wikipedia.org/wiki/List_of_offshore_wind_farms_in_the_United_Kingdom 180MW compares to a peak UK usage of about 50 000 MW so it provides less than 1% of peak power. It seems to be a medium-sized offshore wind farm - the ones near Barrow are much bigger in total. The West Duddon station provides twice the peak power but at four times the installation cost. But Wharrels Hill, the prominent wind farm near Bothel is only 10MW so this is huge!