Scotland’s statutory Climate Change Plan was finalised in March with data centres identified as a potential clean-growth industry. Six months later, the Scottish Government acknowledged that fossil-fuel emissions from data centres had not been included in that plan. The admission came as ministers imposed mandatory environmental assessment on developments above 50MW and Parliament began examining a pipeline whose electricity requirements are now measured in gigawatts.
The Scottish Government has acknowledged that part of the environmental impact of Scotland’s rapidly expanding data-centre sector sits outside the emissions assumptions underpinning its Climate Change Plan for 2026 to 2040.
The statement appeared in a Chief Planner direction issued on 16 September requiring every new data centre above 50MW to undergo an Environmental Impact Assessment.
Explaining the decision, Chief Planner Fiona Simpson wrote that artificial intelligence creates national questions around energy, water and hardware requirements and that greenhouse-gas emissions can arise during both construction and operation.
She then stated that any data centre requiring fossil fuels would add emissions “which have not been taken into account in our Climate Change Plan”.
The sentence creates a direct connection between two policy processes that developed largely separately during the first half of 2026.
Scotland’s Climate Change Plan was published on 24 March. Its purpose is to set out the policies and proposals through which Scotland intends to remain within its statutory carbon budgets between 2026 and 2040 and reach net zero by 2045.
At the same time, a new generation of hyperscale data centres was beginning to emerge through Scotland’s planning and electricity systems.
By September, the National Energy System Operator told Parliament that close to 30 Scottish data-centre projects representing about 9.7GW of requested capacity were in the electricity connection queue.
Not all will be built. Some may be speculative and some may disappear as Ofgem reforms the connections process. But the scale is now sufficiently large that ministers have created new planning controls, Parliament has opened a dedicated inquiry and the Scottish Government is preparing national planning and spatial guidance before the end of the year.
The Climate Plan Was Not Blind to Data Centres
The omission should not be confused with data centres being absent from the Climate Change Plan altogether.
The final plan explicitly identifies data centres as one of Scotland’s potential “clean energy-intensive industries”, alongside sectors such as chemicals, paper and steel.
The document links that opportunity to the Scottish Government’s Green Industrial Strategy and presents energy-intensive industries as part of the economic transition that Scotland hopes to attract through abundant renewable electricity.
The Climate Change Plan included data centres within the economic opportunity narrative, but the later planning direction confirms that fossil-fuel emissions arising from data-centre development were not built into its emissions pathway.
That is important because the plan is not merely an aspiration. It is the principal statutory document showing how Scotland intends to remain within three consecutive carbon budgets covering 2026–30, 2031–35 and 2036–40.
Concerns About AI Energy Demand Were Raised Before the Plan Was Finalised
The possibility of rapidly growing data-centre demand was not entirely unknown during preparation of the Climate Change Plan.
The draft plan was published on 6 November 2025 and consulted upon until 29 January 2026.
The Scottish Government’s consultation analysis records concerns about the high electricity demand associated with artificial-intelligence data centres among comments raised during the public-engagement process.
Stop Climate Chaos Scotland also wrote publicly about the issue before the final plan appeared.
In a letter dated 5 March, the coalition argued that the draft Climate Change Plan did not account for the electricity requirements of the emerging hyperscale sector and raised concerns about backup diesel and gas generation.
Stop Climate Chaos Scotland is a campaigning coalition and its estimates and conclusions remain advocacy rather than official findings.
Its timing is nevertheless relevant. The issue had entered public and political discussion before the final Climate Change Plan was published on 24 March.
The Plan Assumes Electricity-Supply Emissions Continue to Fall
The energy assumptions in the Climate Change Plan depend upon Scotland continuing to decarbonise electricity supply while electricity demand rises.
The plan records energy-generation emissions falling from 14.7 million tonnes of carbon-dioxide equivalent in 1990 to 1.0 million tonnes in 2023.
It projects electricity-supply emissions falling further to approximately 0.37 million tonnes by 2040.
That reduction is expected principally through closure of the existing Peterhead power station, replacement with a new gas-fired combined-cycle plant using carbon capture and storage, and the installation of carbon capture at energy-from-waste sites once the Scottish carbon-capture cluster becomes available.
The same plan recognises that electricity demand will grow as heating, transport and industry become more electrified and says renewable generation, grid capacity and storage must expand alongside it.
Large data centres introduce another potentially substantial source of demand into that calculation.
More Electricity Demand Does Not Automatically Mean More Scottish Emissions
A 500MW or 1GW electricity connection is not itself a carbon-emissions figure.
If additional demand is supplied by renewable generation that would otherwise be curtailed, its effect on territorial electricity-generation emissions can be very different from additional demand met by unabated gas generation.
Location, timing, grid congestion, storage, generation mix and new network infrastructure all affect the result.
Data centres could in some circumstances provide useful demand close to renewable generation and reduce the need to constrain wind farms when electricity cannot be moved elsewhere on the grid.
That is one of the reasons NESO has spoken positively about locating some energy-intensive demand in Scotland.
But large data centres normally require continuous power rather than electricity only when wind output is surplus.
The electricity system must therefore be capable of serving them when renewable output is lower as well as when generation is abundant.
It is, therefore, not how much electricity a data centre consumes, but which generation supplies the additional load across every hour of the year.
Backup Generation Creates a More Direct Emissions Issue
On-site standby generation is easier to connect directly with emissions.
Data centres are designed around very high levels of power reliability. Loss of grid supply can interrupt digital services and damage equipment, making backup generation a common part of data-centre design.
Modern Scot has already examined the permit application for DataVita’s existing DV1 site at Chapelhall, where 12 standby generators with more than 66MW of combined thermal input are being considered through SEPA’s environmental-authorisation process.
The applicant proposes hydrotreated vegetable oil rather than conventional fossil diesel and predicts compliance with existing air-quality standards under the assessed operating scenarios.
The Chapelhall documents nevertheless illustrate the amount of combustion plant that can sit behind a data centre whose normal IT load is much smaller than the thermal rating of the backup system.
At hyperscale facilities, emergency generation can become a significant environmental consideration even where those engines are intended to operate for relatively few hours.
The September planning direction specifically identifies backup generators as a possible source of air-quality impacts.
The Government Changed the EIA Rules in September
Until September, Scotland had no blanket rule requiring an Environmental Impact Assessment solely because a data centre exceeded a specified power capacity.
Whether an EIA was needed depended on the existing screening process and the circumstances of the development.
That changed on 17 September.
Scottish ministers used powers under the Environmental Impact Assessment regulations to direct that all new data-centre developments above 50MW are EIA development.
The requirement applies to projects falling within the relevant industrial-estate or urban-development categories of the regulations.
Developments below 50MW remain subject to case-by-case screening.
The Government justified the new rule by referring to evolving evidence around energy use, water consumption, hardware requirements, construction and operational emissions, landscape effects, biodiversity, soils, water, noise and air quality.
It described the approach as precautionary.
Ministers Had Introduced a Monitoring Rule One Month Earlier
The EIA direction followed another intervention in August.
From 17 August, every Scottish planning authority has been required to notify ministers within seven days when it validates an application for a data centre with proposed power capacity above 50MW.
The requirement applies both to new applications and to applications already under consideration when the direction was issued.
The Scottish Government said the purpose was to create strategic oversight of the development pipeline and monitor its implications for wider infrastructure.
That central monitoring system did not previously exist.
When MSP Murdo Fraser asked in July whether the Scottish Government, Energy Consents Unit or National Planning Hub held cumulative electricity and water-demand data for all data centres in the planning system, ministers said the matter was under active consideration and that they were engaging with Scottish Water and NESO.
The August notification direction therefore began creating a national planning view at roughly the same time that the scale of the electricity-connection queue was becoming clearer.
The Grid Queue Is Now Far Larger Than the Pipeline Visible When the Climate Plan Was Prepared
Evidence to Holyrood in September put the connection queue at about 9.7GW across close to 30 Scottish projects.
That is requested electricity capacity, not built demand.
It is also substantially greater than the planning pipeline being publicly discussed when early concerns about hyperscale data centres emerged.
In June, a Scottish Parliament motion referred to at least 6GW of proposed data-centre demand and explicitly stated that this had not been accounted for in the March Climate Change Plan.
That motion was political rather than an official technical assessment.
The later NESO evidence provided an independent system-operator figure showing an even larger electricity connection queue.
The difference between the figures also shows how quickly the sector has been changing.
The Biggest Proposals Arrived After the Carbon Pathway Was Set
The developing pipeline now includes projects far larger than Scotland’s existing data-centre estate.
At Chapelcross in Dumfries and Galloway, planning permission in principle has been sought for a campus described by the developer at around 1GW.
In Lanarkshire, the UK Government has designated an AI Growth Zone centred on DataVita and associated expansion plans.
Other large developments are being pursued or considered around Hunterston, Larbert, Fife, Edinburgh, Greenock and elsewhere.
The projects are at different planning stages and their quoted power requirements should not be added together and treated as certain future demand.
The significance for climate planning lies in the scale of the possible change in the demand landscape after the emissions pathway had been constructed.
Parliament Has Now Asked the Questions the Climate Plan Did Not Settle
On 7 October, two Scottish Parliament committees opened a joint call for evidence on hyperscale data centres.
The Climate Action Committee is examining environmental effects including emissions, air quality, water, biodiversity and backup generation.
The Economy, Tourism and Energy Committee is examining electricity demand, generation, network infrastructure, grid balancing, curtailed renewable electricity and economic effects.
The inquiry is therefore looking across systems that had previously been examined largely in separate policy documents.
Responses are open until 15 November.
Holyrood Has Also Changed the Political Position on Planning
On 16 September, MSPs debated a proposal for a formal moratorium on new hyperscale data-centre planning applications.
The final motion did not create such a legal moratorium.
Instead, Parliament backed mandatory environmental assessment, national planning guidance, stronger environmental standards and further work on energy, water and community benefits.
The agreed motion also stated that planning and consenting decisions should not be made until national guidance had been completed.
The Scottish Government has not issued a legal instruction ordering councils to stop determining applications.
Public Finance Minister Hannah Mary Goodlad confirmed in a written parliamentary answer on 6 October that no such instruction has been issued.
She said, however, that ministers do not anticipate planning authorities determining applications before the new guidance is published later this year.
The Government says that guidance will be issued before Christmas.
The Climate Coalition Wants the Guidance Process Opened to the Public
The current political pressure comes from a letter coordinated by Stop Climate Chaos Scotland and supported by environmental organisations including Action to Protect Rural Scotland.
The coalition is asking the Scottish Government to hold a formal consultation on the emerging data-centre guidance and to conduct a broader public discussion about hyperscale development.
It is also seeking clearer information on the location and number of projects and an independent assessment of their cumulative effects.
Those are campaign demands rather than government policy.
The Government’s position is that planning guidance is being developed quickly to provide greater certainty for communities, planning authorities and investors.
The timetable creates its own constraint. A sector whose cumulative effects were still described as being under active consideration in August is expected to have national planning and spatial guidance before the end of December.
The Carbon Gap Is Narrower Than the Electricity Gap
The Scottish Government’s September admission should not be stretched beyond what it says.
It does not say that the Climate Change Plan omitted every possible emission associated with every future data centre.
Nor does it establish that Scotland’s carbon budgets will automatically be breached if all current applications progress.
It says that where data centres require fossil fuels, those additional emissions were not taken into account in the Climate Change Plan.
That is a narrower statement, but it is consequential because the plan’s carbon pathway was presented in March as the route through Scotland’s statutory budgets to 2040.
The plan itself recognises uncertainty and contains monitoring provisions allowing policies to be adjusted as circumstances change.
Hyperscale computing has now become one of those changed circumstances.
The Next Test Is Whether the Climate Model Is Updated
Scotland now has three policy responses developing simultaneously.
The planning system has introduced national notification and mandatory EIA requirements for large data centres.
The Parliament has opened an inquiry into cumulative environmental and energy effects.
The Scottish Government is preparing new national planning and spatial guidance.
What has not yet been published is a revised Climate Change Plan emissions pathway incorporating any additional fossil-fuel use associated with the emerging data-centre sector.
The existing plan projects Scotland’s electricity-supply emissions falling sharply towards 2040 while electricity demand increases as the rest of the economy electrifies.
The Chief Planner has now formally recorded that fossil-fuel emissions from data centres sit outside that calculation.
The size of that gap cannot be established simply from the 9.7GW connection queue because connection capacity, actual electricity use and fossil-fuel emissions are different measures.
It will depend on which projects are built, how they are powered, the amount and use of on-site combustion plant, what happens to electricity generation elsewhere in the system, and how rapidly additional renewable generation, storage and transmission capacity become available.
Those are now among the questions before Parliament and the planners writing Scotland’s new data-centre rules.
Sources
Scotland’s Climate Change Plan: 2026–2040
Scottish Government, 24 March 2026
https://www.gov.scot/publications/scotlands-climate-change-plan-2026-2040-annexes/
Scotland’s Climate Change Plan: 2026–2040 — Energy Supply Sector Annex
Scottish Government, 24 March 2026
https://www.gov.scot/publications/scotlands-climate-change-plan-2026-2040-annexes/pages/14/
Scotland’s Draft Climate Change Plan 2026–2040: Consultation Analysis
Scottish Government, 27 February 2026
https://www.gov.scot/publications/public-consultation-analysis-scotlands-draft-climate-change-plan-2026-2040/
Data Centres: Chief Planner Letter and EIA Direction — September 2026
Scottish Government, 16 September 2026
https://www.gov.scot/publications/chief-planner-letter-eia-direction-on-data-centres/
Planning — Notification Direction Letter — Data Centres — August 2026
Scottish Government, 20 August 2026
https://www.gov.scot/publications/planning-notification-direction-letter-data-centres-august-2026/
Economy, Tourism and Energy Committee Official Report — Data Centres
Scottish Parliament, 15 September 2026
https://www.parliament.scot/chamber-and-committees/official-report/search-what-was-said-in-parliament/ETE-15-09-2026
Hyperscale Data Centres — Motion S7M-01177
Scottish Parliament, 16 September 2026
https://www.parliament.scot/chamber-and-committees/votes-and-motions/S7M-01177
Meeting of the Parliament
Scottish Parliament, 16 September 2026
https://www.parliament.scot/chamber-and-committees/official-report/search-what-was-said-in-parliament/meeting-of-parliament-16-09-2026
Written Questions S7W-03492, S7W-03493 and S7W-03494
Scottish Parliament, answered 6 October 2026
https://www.parliament.scot/chamber-and-committees/questions-and-answers
Hyperscale Data Centres — Short Survey and Detailed Call for Evidence
Scottish Parliament, opened 7 October 2026
https://yourviews.parliament.scot/consultation_finder/
Scotland’s Climate Coalition Calls for Proper Public Consultation on AI Data Centres
Action to Protect Rural Scotland / Stop Climate Chaos Scotland, 5 October 2026
https://aprs.scot/news/scotlands-climate-coalition-calls-for-proper-public-consultation-on-ai-data-centres/
SCCS Data Centres Letter
Stop Climate Chaos Scotland, 5 March 2026
https://www.stopclimatechaos.scot/wp-content/uploads/2026/03/SCCS-data-centres-letter-to-Anas-Sarwar-MSP-March-2026.pdf
