Key Takeaways

  • The proposed Norwich Apex facility would use 72 rooftop chillers and create 150 jobs.
  • Noise, lighting and ecological effects are central concerns because Marston Marsh is about 650 metres away.
  • The planning debate reflects wider pressure from rapidly rising UK data-centre electricity demand.

Planners have heard that the proposed facility at Keswick would create 150 jobs, but its scale and proximity to a protected nature site have placed its environmental design under close scrutiny. The Norwich Apex development would have a power capacity of 150 MW and use 72 chiller units installed on the roof.

Those chillers are emerging as one of the most closely watched elements of the application. According to BBC News, assessments found that the equipment could generate “very high” surrounding noise without extensive mitigation. Norwich Apex says the completed facility would operate at noise levels matching the existing background environment.

A data centre runs around the clock, so even a relatively consistent mechanical sound can become contentious in a rural or semi-rural setting, especially at night when other noise falls away. Assessing the project therefore involves more than checking a single maximum reading. Planners will also evaluate tonal characteristics, cumulative equipment noise, operating conditions and the effectiveness of barriers or acoustic enclosures.

The site is about 650 metres from Marston Marsh, bringing wildlife and habitat effects into the discussion as well. Construction traffic, artificial lighting, landscape changes and prolonged operational sound could all influence the planning assessment. The proximity to the protected nature site necessitates detailed acoustic and ecological evidence.

Cooling cannot simply be removed from the design. Servers and associated electrical equipment produce substantial heat, and that heat must be managed reliably. Norwich Apex says its air-cooled approach would avoid abstracting water for cooling, reducing one type of environmental pressure while making rooftop mechanical equipment more prominent.

This is a familiar engineering trade-off. Water-based systems can reduce reliance on large arrays of air-moving equipment in some circumstances, but they also raise questions about local water availability and consumption. Air cooling changes the environmental impact profile. Determining whether acoustic treatment can bring 72 chillers within acceptable limits without reducing cooling performance remains a central technical and planning question.

The application arrives as Britain confronts the infrastructure consequences of cloud computing and artificial intelligence. UK data centres consumed an estimated 4.5 TWh of electricity in 2024, about 2% of Great Britain’s grid electricity, with consumption rising 41% between 2020 and 2024, according to figures associated with DESNZ and the Office for National Statistics.

A separate industry estimate placed 2024 consumption at approximately 8.3 TWh, compared with 3.6 TWh in 2020. The gap illustrates a measurement variation: estimates differ depending on which facilities, activities and electricity uses are classified as belonging to data centres.

The direction, however, is broadly upward. Electric Insights forecasts that UK electricity demand attributable to data centres will quadruple by 2030. That prospect is increasing pressure on grid planning, connection queues and decisions about where large facilities should be located.

For enterprise customers, the Keswick debate has implications beyond one development. Operators such as Equinix and Digital Realty, along with hyperscalers including Microsoft, depend on facilities that can secure large power connections while meeting increasingly detailed local expectations. Capacity demand may be national, but planning consent remains grounded in local effects.

Environmental Impact Assessment processes provide a route for examining noise, ecology, lighting, landscape and construction impacts together. Operational frameworks can add another layer. ISO 14001:2015 offers a structure for environmental-management systems, while the voluntary EU Code of Conduct for Data Centre Energy Efficiency sets out practices for improving operational efficiency.

Neither framework settles a planning dispute by itself. Evidence from modelling, equipment specifications, monitoring commitments and enforceable planning conditions tends to carry more weight at the site level. Norwich Apex’s challenge is to demonstrate that a 150 MW facility can operate beside a sensitive landscape without creating unacceptable effects.

The 150 jobs offer a clear economic argument, yet the project also highlights why data-centre approvals are becoming more demanding. Communities are being asked to host infrastructure that supports remote digital services but has decidedly physical consequences, from electricity demand to persistent cooling noise. How Norwich Apex addresses those consequences will likely inform local confidence in further large-scale developments beyond Keswick.