Circle area scales with MW. Hollow rings have no published capacity. Positions are approximate (town or estate level).
How sizes are banded
There is no single industry standard: sources put "hyperscale" anywhere from 10 MW to over 100 MW. This tracker uses five bands by IT or grid capacity, with Scotland's 50 MW planning threshold as the line between medium and large. DC BLOX · RISE · Scottish Government
| Band | Capacity | Proposed | Operating | What it means |
|---|---|---|---|---|
| Small | under 5 MW | 0 | 7 | Server rooms, edge sites and small colocation halls. Most of Scotland's operating data centres. |
| Medium | 5 to 49 MW | 0 | 1 | Large colocation or enterprise sites, such as DataVita DV1 (24 MW). Below Scotland's 50 MW threshold. |
| Large | 50 to 249 MW | 9 | 0 | Hyperscale scale. At 50 MW and above, councils must notify Ministers and an EIA is mandatory. |
| Very large | 250 to 999 MW | 15 | 0 | Multi-building hyperscale or AI campuses. |
| Gigawatt | 1,000 MW and above | 2 | 0 | Gigawatt-scale AI campuses, each a quarter of Scotland's winter peak demand or more. |
| Size unknown | not published | 5 | 8 | No capacity figure published yet. |
For scale: Scotland's winter peak electricity demand is about 4,000 MW. The Register
What a megawatt means in homes
Data centres run day and night all year. 1 MW used at full capacity for a year is 8,760 MWh. Scottish homes used 8.8 TWh of electricity in 2024 across 2.57 million households, about 3,420 kWh per home. So each megawatt at full capacity is roughly the electricity of 2,560 homes. Scotland's total electricity use in 2024 was 21.7 TWh.
Sites rarely run at full capacity all the time, so pages show a range. The low end assumes three-quarters of capacity on average. That is what the two Scottish developers' figures we have imply: Auchtertool's energy statement gives 4,000 GWh a year for 600 MW (76%), and Chapelcross is estimated at 7 TWh a year for 1,000 MW (80%). Where a figure has been published for a site, its page uses that figure instead. Scottish Parliament (SPICe) Scottish Parliament
| Capacity | Homes' worth of electricity | Share of Scotland's homes | Share of all Scottish electricity | Compared with every electric train in Britain |
|---|---|---|---|---|
| 50 MW | 96,000 – 130,000 | 4–5% | 2% | 8–11% |
| 120 MW | 230,000 – 310,000 | 9–12% | 4–5% | 19–26% |
| 300 MW | 580,000 – 770,000 | 22–30% | 9–12% | 48–64% |
| 600 MW | 1.15 million – 1.53 million | 45–60% | 18–24% | about the same |
| 1,000 MW | 1.92 million – 2.56 million | 75–100% | 30–40% | 1.6–2.1 times |
Other ways to picture it
| Electricity user | Per year |
|---|---|
| Every home in Scotland (2024) | 8.8 TWh |
| Every business, factory and public building in Scotland (2024) | 12.9 TWh |
| Every electric train in Great Britain, passenger and freight (2024-25) | 4.1 TWh |
| All of Scotland (2024) | 21.7 TWh |
For balance: Scotland generated 51.8 TWh in 2024, more than twice the 21.7 TWh it used, and in 2025 about 8.8 TWh of wind in northern Scotland was switched off because the grid could not carry it. Developers argue data centres could use power that is now wasted. Whether a site would depends on where it connects: most switched-off wind is in the north, most proposals are in the Central Belt, and data centres need power on calm days too. Scottish Government The Energyst (Montel analysis)
So a 600 MW campus would use about as much electricity as every electric train in Britain. Office of Rail and Road · Scottish Government
Two things can push real use above these figures: some published capacities cover only the computers, with cooling on top, and campuses may grow beyond their first phase. Large sites are also built in phases, so use will be lower in the early years. Homes here means average household electricity, not heating, which in most Scottish homes is gas. The Scottish Parliament's researchers used Ofgem's "typical household" figure of 2,500 kWh, which gives higher home counts; we use Scotland's actual average. Scottish Government · National Records of Scotland
Proposed, in progress and stalled
31 schemes · 10,267 MWSchemes from first announcement through to a lodged application, plus those under construction, refused or stalled. Most are large AI campuses still at pre-application, and together they would add many times today's operating capacity.
Chapelcross (CX Technology Campus)
i3 Industrial Park, Irvine
Edzell grid connection
Auchtertool (Stoic Cato)
Blackdog
Killellan, Dunoon
Hurlford (Stoic Rufus)
Plains (Drumshangie)
Easterhouse grid connection
North Lanrigg Farm (Stoic Aurelius)
Clydebridge grid connection
Glenbervie, Larbert
Stainrigg Mains, Coldstream
Westerhill, Bishopbriggs
Ravenscraig West
Ravenscraig East
Freeport West Lothian
Southside Data Centre, Longformacus
South Gyle (former RBS HQ)
Wester Hermiston
Creoch Farm, Ochiltree
Cockenzie (former coal store)
Inchinan grid connection
Jawcraig grid connection
Former IBM site, Spango Valley
DataVita DV4, Lancaster Road
DataVita DV3
DataVita DV6, South Lanridge Farm
Haspielaw
Hunterston Estate
West Barns Mains, Dunbar
Operating
16 sites · 36.4 MW knownData centres running in Scotland today, mostly colocation, bank and research sites in the Central Belt, Aberdeen and Dundee. Most are small; the largest, DataVita DV1 at Chapelhall, is about 24MW.