“The cable increased interconnection capacity by over 2,200MW – enough to power more than 4 million homes in Scotland, Wales and England every year, according to Iberdrola, which owns Scottish Power.”
But only if the wind blows!
A blog shows the UK demand for electricity was high last week when we were suffering a lot of fog and little wind and contributing around 5% of our electricity requirements and coal, which is to be shut down this year, has been called upon to contribute 10%. And by 2025 it gets worse with a possible electricity supply deficit of some 16GW.
See https://adriankerton.wordpress.com/005c-will-the-lights-go-off-in-january/