>>RobinL+(OP)
I think one of the most important elements is buried - electricity pricing is uniform across the entire UK. That seems nuts to me, and incentivizes building in locations that are less useful - it's likely cheaper to build in Scotland, higher production from more wind, you get paid more (for expected yield plus curtailment apparently), and you have less wear on the equipment when you adjust to lower output.
>>zabzon+Vl
National Grid ESO are the system operator for the GB grid.
National Grid Electricity Transmission operate the transmission network in England and Wales. The transmission network in the south of Scotland is operated by SP Transmission; in the north of Scotland, it's SSEN Transmission.