Summary
- The Environmental Impact Assessment Report was published on 30 October.
- Environmental representations close on 29 November; the main application closes earlier.
- The data centre proposal remains under assessment with no planning consent granted.
Dumfries and Galloway Council has opened a separate consultation on the Environmental Impact Assessment Report for the proposed Chapelcross AI data centre campus near Annan, inviting representations on environmental effects until 29 November.
The report was published on 30 October as part of planning application 26/1649/PIP. Comments on the environmental material can be submitted until 11.59pm on 29 November, while the main planning application consultation has an earlier closing date of 15 November.
The application was submitted by CX Tech Limited and seeks planning permission in principle for a data centre and technology campus on land associated with the former Chapelcross nuclear power station. The proposal also includes supporting buildings and infrastructure.
The project remains under assessment. Publication of the environmental report is a statutory procedural step and does not grant permission to construct the campus or establish its eventual operating electricity demand.
Planning permission in principle would decide whether the broad development is acceptable. If granted, further applications would still be needed to approve detailed elements such as layout, design and landscaping before those works could proceed.
Environmental effects remain under examination
The council identifies electricity use, drainage, water demand, greenhouse gas emissions, wildlife, landscape, traffic and noise among the matters relevant to planning consideration. The site history and proposed supporting infrastructure add further issues for detailed assessment.
Large data centres require power infrastructure and cooling systems appropriate to their intended computing load. Substations, electrical connections and mechanical plant can have environmental and land-use effects extending beyond the footprint of the data halls themselves.
Cooling arrangements also affect the relationship between electricity demand, water consumption and the rejection of waste heat. The effect of a specific design cannot be determined without knowing the technology selected, the local conditions and the expected operating profile.
The Environmental Impact Assessment Report presents the developer’s examination of potentially significant effects. The council must scrutinise that evidence alongside public comments, specialist advice and other material planning considerations.
Scottish Environment Protection Agency, NatureScot and Scottish Water are among the bodies that may be involved in the assessment of matters within their responsibilities. Further information can be requested where the planning authority considers that a question has not been adequately addressed.
Chapelcross has already generated significant public interest. Earlier representations raised questions about land use, resource demand and the scale of the proposed development. The new environmental consultation provides an additional formal opportunity to examine evidence rather than simply reopening the original application.
Different deadlines reflect different processes
The two consultation dates arise from separate requirements for publicising the planning application and the environmental report. The council says people who have already submitted comments do not need to repeat them because the later document has been published.
Planning representations must concern relevant issues, such as environmental effects, infrastructure, transport and local economic circumstances. Matters outside planning law cannot determine the outcome simply because they have been raised during consultation.
Following the consultation, planning officers will consider the material and prepare a report and recommendation. The proposal’s classification as a national development also brings a requirement for a pre-determination hearing before the relevant decision.
Scottish government guidance concerning data centres is expected in December. The policy and guidance applicable when a decision is taken may form part of the council’s assessment, although publication of future guidance cannot be assumed in advance.
No construction timetable or commissioning milestone is established by the environmental report’s publication. The immediate process is consideration of the applicant’s evidence and representations, followed by the council’s statutory decision procedures.
