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London is writing a data centre policy. Cities need to treat AI compute like heavy industry, not invisible infrastructure

ended 06. March 2026

London is moving towards a dedicated policy on new data centres, driven by concerns about energy and water use and the carbon footprint of rapid buildouts.

That should be read as a warning to every city chasing "AI hub" status. Data centres are being treated like clean, invisible infrastructure. In practice they behave like heavy industry: they need land, they strain grids, they compete for water, and they lock in long-term energy demand.

The risk is that planning and climate policy stay abstract while projects arrive one by one. Each application looks manageable. The cumulative load is not. Without a transparent accounting of total demand, cities end up with a slow-motion capacity crisis and a procurement scramble for emergency power that blows up climate targets.

The accountability gap is obvious. The benefits are counted as jobs and investment. The costs show up as higher bills, grid constraints, and local environmental trade-offs. If a policy is serious, it needs hard requirements: measurable efficiency targets, public reporting, water limits, and binding commitments to bring new generation, not just consume it.

We'd like your views:

  • Should planning approval require proof of additional low-carbon generation, not just purchase agreements?
  • What should be disclosed publicly: energy demand, water usage, emissions, and local grid upgrades?
  • Who should pay when data centre growth forces expensive infrastructure expansion?
  • Are moratoriums a sensible tool, or a sign of policy failure?
  • What is a fair test for whether a data centre is a net benefit to a city?

1 responses from the Newspage community

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Rohit Parmar-Mistry
Founder at Pattrn Data
London is right to treat data centres as a planning issue, not a tech afterthought. They behave like heavy industry: concentrated electricity demand, cooling water and real local impacts, even if the product is ‘in the cloud’.

A simple rule would fix half the politics: no consent without an auditable plan for power and water. Not a marketing claim about 100% renewable, but proof of additional low carbon generation, realistic connection dates, and what happens in a grid stress event. Ofgem is already signalling tighter discipline on demand connections for large loads.

Cities should also publish cumulative ‘compute load’ budgets so applications cannot be judged in isolation, and require efficiency targets with independent reporting. If the benefits are private, the infrastructure costs should not quietly land on households.

If London gets this right, it becomes a template: clear disclosure, hard limits, and accountability before the buildout locks in.