Large-scale data centre developments in Scotland are facing a new regulatory landscape as of today, 17 September, following the Scottish Government’s introduction of mandatory Environmental Impact Assessments (EIAs) for all proposed facilities with a power capacity exceeding 50MW.
This planning direction marks a significant shift in how the Scottish government manages the rapid expansion of digital infrastructure. As the global demand for data processing capacity surges—driven largely by the proliferation of artificial intelligence and data-intensive technologies—the government is taking proactive steps to ensure that the infrastructure supporting this growth does not compromise national climate and environmental targets.
Under the new directive, any developer proposing a data centre exceeding the 50MW threshold must submit a comprehensive EIA as part of the formal planning application process. This follows a preceding measure introduced in August, which requires planning authorities to notify Scottish Ministers of any data centre application surpassing 50MW within seven days of its validation. Together, these measures are designed to provide the government with greater oversight of how these energy-intensive facilities integrate with Scotland’s wider infrastructure, energy grid, and environmental objectives.
Public Finance Minister Hannah Mary Goodlad emphasized that the move is an essential step in balancing economic opportunity with national responsibility. “We need to balance the economic and employment opportunities presented by data centres with our national energy, climate and community wealth-building ambitions,” she stated. By mandating an EIA for all projects over the 50MW threshold, the government aims to identify and mitigate significant environmental impacts at the earliest possible stage of development.
The Scottish Government’s Chief Planner has issued guidance identifying several critical areas of concern, with water consumption emerging as a primary focus. Data centres require substantial amounts of water for cooling, a process that can strain local resources. To address this, the government has pointed to “closed-loop” cooling systems as a necessary technological standard for developers seeking to minimize their water footprint.
Beyond water usage, the guidance highlights a range of environmental considerations that the new EIAs must address. These include the potential impacts on biodiversity, soil health, and the surrounding landscape. Furthermore, the reliance on back-up generators for maintaining continuous uptime has raised concerns regarding local noise pollution and air quality, factors that will now require rigorous assessment before planning approval can be considered.
The integration of artificial intelligence into the global economy has dramatically altered the requirements for hardware, energy, and cooling, prompting the Scottish Government to develop these requirements in consultation with the Scottish Science Advisory Council. This collaborative approach reflects the complexity of the challenges involved, particularly as Scotland seeks to position itself as a hub for digital innovation without undermining its commitment to net-zero carbon goals.
While the mandatory EIA threshold is set at 50MW, smaller developments are not exempt from scrutiny. Projects falling below the 50MW capacity will continue to be governed by existing EIA regulations, where the necessity of an assessment is determined on a case-by-case basis.
As Scotland manages an expanding pipeline of large-scale data centre proposals, the new directive serves as a clear signal that developers must prioritize sustainability as a core component of their business models. By embedding environmental accountability directly into the planning process, the Scottish Government intends to ensure that the evolution of its digital infrastructure remains compatible with the protection of its natural heritage and public resources.
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