Expansion of artificial intelligence data centres across Scotland could drive up electricity costs for households and undermine the nation's decarbonisation targets, according to warnings delivered to members of the Scottish Parliament.
Scotland has emerged as a preferred location for hyperscale AI data centres because of its substantial renewable energy capacity, particularly from wind generation. However, academics and energy experts have cautioned that rapid growth in data centre construction would still necessitate increased reliance on gas-fired power stations during periods of low wind and solar output—a pattern that has already contributed to rising energy prices in the Republic of Ireland and parts of the United States.
The National Energy System Operator (Neso) acknowledged these concerns while arguing that data centre development could ultimately help stabilise electricity prices. The organisation noted that plans exist to decouple gas costs from consumer bills, and that attracting data centres to Scotland would represent a significant mechanism for maintaining lower electricity rates across the country.
How would data centres affect Scotland's energy system?
Data centres would consume excess renewable energy that currently cannot be used, reducing the substantial payments made to wind farm operators when turbines must be shut down due to grid capacity constraints. Dr Callum MacIver, a research fellow at the University of Strathclyde, explained that this absorption of surplus power would eliminate multi-million pound constraint payments triggered when wind generation exceeds the network's ability to distribute it.
Yet MacIver cautioned that despite this benefit, the overall expansion would likely increase fossil fuel consumption.
Adding demand in general is likely to put pressure on meeting decarbonisation goals. It's not always windy or sunny so adding new demand to the system is likely to increase the amount of fossil fuel burn you have on it.He suggested that positioning data centres in strategically optimal locations could reduce these environmental impacts by maximising access to wind energy.
The scale of potential demand is substantial. According to one analysis, projects already in the Scottish planning system could require around 6.2 gigawatts of power—exceeding Scotland's peak winter demand. An environmental charity estimated that data centres currently in the planning pipeline would demand between 4,450 and 4,950 megawatts of electricity.
Who will pay for grid upgrades?
A critical unresolved question concerns how the costs of expanding electricity infrastructure will be distributed between data centre operators and ordinary consumers. While technology firms will cover their own energy bills, connection fees and network usage charges, uncertainty remains about responsibility for broader transmission network upgrades required to accommodate the new demand.
Dr Wei Sun from the University of Edinburgh highlighted this ambiguity during parliamentary testimony.
It's a concern of a lot of people worldwide. It's a simple question of whether data centres are going to increase the bill or not. There's no simple answer. Adding the data centre is probably going to trigger wider system upgrades. Does the data centre also pay for that? I think that's really the question we need to answer.
The inquiry heard that technology companies operating large-scale artificial intelligence systems possess sufficient flexibility to shift computational workloads between different regions globally based on real-time electricity availability. Matt Magill from Neso explained that major operators can distribute AI training tasks across multiple locations and move processing loads internationally depending on local grid conditions, offering power system operators greater flexibility in managing supply and demand.
Why is Scotland particularly attractive for data centres?
Scotland's abundance of renewable electricity generated by wind turbines makes it exceptionally suitable for data centre development. However, the grid frequently lacks capacity to transmit all available wind power, forcing turbines to operate at reduced output. Wind farm operators receive substantial compensation payments for this curtailment, representing a significant cost to the energy system.
Mark Wilson, chief executive of ILI Group, argued that data centres would enable more efficient use of this otherwise wasted renewable energy.
Scotland is in a position not a lot of other countries are and we feel this is an opportunity we cannot afford to miss.Wilson also noted that constructing hyperscale data centres throughout Scotland could generate hundreds of employment opportunities.
The UK government has introduced an AI Growth Zones policy designed to accelerate grid connections and attract data centre investment to regions with available power capacity. Under this framework, data centres in Scottish AI Growth Zones could receive electricity cost discounts of up to £24 per megawatt-hour from April 2027, subject to legislative approval. This represents the highest regional discount among the proposed AI Growth Zones, exceeding the £16 per megawatt-hour offered in Cumbria and the £14 per megawatt-hour in the North East, according to UK government policy documentation.
The Lanarkshire AI Growth Zone, a major proposed development, could deliver approximately £84 million annually in reduced developer costs once fully operational. Developers of large data centres may also be required to pay deposits ranging from £237,500 to £712,500 per megawatt, with gigawatt-scale projects facing hundreds of millions in upfront costs, according to reporting from a national broadcaster.
What is the political response?
The Scottish Greens raised concerns about hyperscale data centres at Holyrood in June, calling on First Minister John Swinney to implement a moratorium on planning approvals. Swinney acknowledged environmental concerns and committed to giving
active considerationto whether local authorities should receive new national planning guidance that could balance rapid data centre expansion with Scotland's energy and climate objectives.
Community opposition has intensified, with campaigners protesting outside the Scottish Parliament on 3 September 2026 over the data centre expansion plans. The Scottish government's consideration of a potential moratorium on new projects could significantly challenge the UK's broader artificial intelligence strategy, which depends partly on Scottish infrastructure development.
The Holyrood Economy, Tourism and Energy Committee is investigating the energy implications of locating additional data centres in Scotland, examining both the opportunities and risks associated with this rapid industrial expansion.
What happens next?
The proposed electricity discount scheme for AI Growth Zones is scheduled to commence in April 2027, pending parliamentary approval. The UK government intends to review the regional discount framework in 2030 to assess its effectiveness and determine whether adjustments are necessary. The outcome of the Scottish Parliament's inquiry into data centre energy use will likely influence whether the Scottish government proceeds with planning guidance changes or implements restrictions on new approvals.
Key facts
- Data centres in Scottish AI Growth Zones could receive electricity discounts up to £24/MWh from April 2027, the highest among UK regional zones
- Projects already in the Scottish planning system could demand 6.2 GW of power, exceeding Scotland's winter peak demand
- The Lanarkshire AI Growth Zone could reduce developer electricity costs by approximately £84 million annually once fully built
- Uncertainty remains about whether data centre operators or consumers will fund broader transmission network upgrades required for expansion
- The Scottish government is considering new planning guidance or a moratorium on approvals to balance data centre growth with climate goals
