Comment by robhawkes
7 hours ago
The squiggly ones across the country? Those are the National Energy System Operator (NESO) transmission boundaries for Great Britain. They represent areas of the country that are tracked for the purposes of managing constraints, which is when the transmission network over the boundary can't handle the amount of power flowing over it. When they are overloaded (or rather, before that happens) NESO will step in and "balance" the various zones by turning up or down generators.
I note that one of those lines seems to take a big detour up and round Cruachan?
https://www.visitcruachan.co.uk/
The lines are sort of arbitrary in a geographic sense as in reality they are defined based on the intersection with the schematic version of the transmission network [0]. Though yeah, that specific example is an odd one and I'd be interested to understand more about why it was placed in one boundary and not the other.
[0] https://www.neso.energy/data-portal/day-ahead-constraint-flo...
Lovely site. As a wind energy ignoramus, it would be great to add descriptions to your FAQ for the red lines, and curtailment.
1 reply →