Data Centres: Energy and Water Consumption

Baroness McIntosh of Pickering Excerpts

Tuesday 8th July 2025 Lords Chamber

[Lord Vallance of Balham (Lab)]

The right reverend Prelate is right that water is a very large issue for data centres, as they consume large amounts of it. There are now technologies that reduce that use, such as recirculation of water. The AI growth zone proposals are required to set out water use—the volume of water required, the availability of that volume, the timeline of delivery and any wider infrastructure requirements or constraints—and they must work with the water provider to do that. Applications must confirm the above from the relevant water supplier and include any other associated impacts. A working group on sustainability has also been set up under the AI Energy Council.

[Baroness McIntosh of Pickering (Con)]

My Lords, I am an officer of the All-Party Parliamentary Water Group and follow these issues very closely. Does the Minister share my concern that data centres are being built and expanded very close to major new housing developments in areas of deep water stress? What is the Government’s policy to ensure that households, as well as the data centres concerned, will have sufficient drinking water and sufficient evacuation of wastewater sewage?

[Lord Vallance of Balham (Lab)]

The proposal process for AI growth zones, which is where the big data centres will be placed, started in early February and ended at the end of February. Over 50 proposals have come forward, each of which needs to deal specifically with water in relation to the local environment and local plans, and to plan that with the water company.