In the often otherwise very good Conversation on 13 January 2023, we read:
Over the past decade, an average of 5% of the country’s electricity has been imported, helping to reduce the amount it needed to generate itself. However, net imports swung to net exports in 2022 for the first time in 44 years.
https://theconversation.com/britain-is-a-net-electricity-exporter-for-first-time-in-44-years-197506
They illustrate with this graph:
I can’t see what the surplus for export is precisely but it looks like 3 or 4 TWh.
Where might that have come from?
The word Scotland only appears once in: ‘To put 24 TWh in context, this is broadly similar to the amount of electricity Scotland uses each year, or the annual output from Britain’s onshore wind generation.‘
See this from a UK Government source:
Between Quarter 3 2021 and 2022, net electricity transfers from Scotland to England increased by 52 per cent to 3.0 TWh. This is linked to higher output from wind generation compared to Quarter 3 2021, as Scotland has a high proportion of the UK’s wind generation capacity.
https://assets.publishing.service.gov.uk
Talking-up Scotland 
Interesting that most of the interconnectors appear to terminate in England.
The black hole of Europe,sucking in energy from wherever they can get it
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No not so. They ALL terminate in England. The nearest one to us is Middlesbrough.
If Scotland is to fulfill its renewables potential this is one of the things to be addressed. And quickly for you can imagine the stretch from the border to Middlesbrough would be charged at a high rate as we would have no alternative. Put simply, Scotland must have its own direct connection to the European grid.
We also need to think about storage/what to do when the wind doesn’t blow. Our own direct connection would open up a number of possibilities.
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The UK exports its surplus presumably making a nice little profit for the owners of the electricity, whoever that might be.
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Scotland in surplus and nearer the source pays more. Westminster policy.
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