TL;DR
Scotland has 24 major data centre proposals in the planning system as of early September. Approved together, they would draw as much as 6,000MW, over one and a half times what the whole country uses at peak. The scale gap with what already exists is the story: the largest operating Scottish site runs at 12MW.
The arithmetic that changes the argument
Fifteen data centres operate in Scotland today, spread across Moray, Aberdeen, Dundee, Edinburgh, both Lothians, Lanarkshire and Glasgow. The biggest is a 12MW facility in Lanarkshire.
The proposals now queued are of a different species. Blackdog near Aberdeen and Auchtertool in Fife are each pitched at 600MW. Two Ravenscraig schemes in North Lanarkshire come to 1,050MW between them, with two more at Chapelhall adding 1,000MW. Hurlford in East Ayrshire is 540MW. Several — Hunterston, Dunbar, Cockenzie, Haspielaw — carry no published capacity at all, so the 6,000MW total is a floor rather than a ceiling.
Two features of the pipeline deserve attention. It is concentrated: North Lanarkshire alone holds six applications. And it is concentrated by developer too — ten of the schemes come from a single company, Apatura. Not every proposal will proceed; a 600MW Dunoon site and a 1,000MW scheme at Irvine are both understood to have fallen away.
Why the planning framework is the pressure point
Scotland attracts these projects for a straightforward reason: wind generation. The renewable supply that makes the country attractive to operators is the same supply the grid is counting on for everything else.
Ministers responded last month by requiring planning authorities to flag any data centre application over 50MW inside a week of it being validated. That gives central government visibility, not a policy. Campaigners point out that the national planning framework was last updated in 2022, before ChatGPT launched — so the rules being applied to 600MW AI facilities were written for a world that had not yet met them.
Looking forward
Fifteen local groups brought several hundred campaigners to Holyrood last Thursday to demand a moratorium until the effects are properly researched, which we covered at the time. This pipeline detail is what gives that demand its weight. The decision Scotland faces is not really about any one site but about whether 24 separate local determinations should add up to a national energy commitment nobody has voted on. That question is arriving faster than the framework meant to answer it.