[throwawayben]

Could you explain more? It appears economically self evident to me that it would improve the situation but I'm not in the industry and there's probably much I don't understand.

I would say that improving transmission seems like a much better solution but again I think zonal pricing can help there as it could then be more easily sold to the public as being able to import the cheaper (say) Scottish energy to your local zone, whereas at the moment there's no apparent direct cost associated with blocking pylon projects forever.

[RobotToaster]

The majority of the population live in regions that would become more expensive. Additionally the majority of Scottish constituencies vote for their nationalist party, so the major national parties don't have any chance of getting seats from Scotland, where energy prices may fall slightly under such a scheme.

[mytailorisrich]

> The majority of the population live in regions that would become more expensive.

Yes, and if you are an individual, family, or even the vast majority of businesses you aren't going to move to Scotland over this, you are going to pay, no choice. So effectively this would have increased bills for most people, so bad politically, with only a marginal change to demand.