TL;DR
Brussels has put forward rules that would make European data centres report their energy and water efficiency on a rating label the EU has designed. The Commission published the proposal on Monday. The scheme sets no limits on consumption, but Reuters says it could pave the way for mandatory minimum efficiency standards the EU is already working on. National governments and MEPs get two months to raise objections before it takes effect.
What operators would have to disclose
Reuters reports the duty would fall on sites of 500kW capacity. Alongside the efficiency ratings, they would need to report how their water use relates to water stress in the surrounding area, and whether they can support the regional grid, for example by passing on waste heat for reuse. They would not have to publish their total power consumption.
The Commission’s aim is to steer investment towards more efficient sites by making performance visible. Brussels is aiming for three times today’s data centre capacity within seven years, both to support AI and to reduce dependence on US technology companies, and Reuters notes that growth on that scale threatens to strain grids, deplete water supplies and raise emissions if left unchecked.
By the EU’s own figures, data centres use around 2.5% of the bloc’s electricity. Capacity is forecast to rise from 12GW last year to 28GW by 2030.
Why it matters in the UK
The UK is outside the scheme, though British firms running sites in the EU would be covered. At home, disclosure is thinner. Earlier this month a freedom of information request found Whitehall could not say what Britain’s biggest data centres are used for. In north Devon, protesters are opposing a £14bn AI data campus whose developer promises a closed-loop cooling system that takes no local water, a claim an EU-style label would let the public check.
In our view, a labelling approach is also a useful template for a UK government that has refused a planning moratorium: it answers the demand for scrutiny without stopping development.
Looking forward
If no objection is raised, the rules enter into force automatically after the two-month window. The more consequential step is the minimum-standards regime that would follow. For UK firms building or leasing capacity in the EU, the practical task now is to start tracking energy and water performance in the format the label will ask for.