EU Proposes A-to-G Energy, Water Labels for 500 kW Data Centres

The European Commission on Monday proposed rules that would force operators of European data centres with 500 kW or more of capacity to disclose how efficiently they use energy and water, but it stopped short of setting any hard limits on how much either resource these facilities can consume.

Reuters reported that the scheme would grade sites on a coloured scale where "A/Green is the most efficient and G/red the least efficient, similar to existing home appliance labelling." Labels are to be generated automatically by an EU database from operator reporting, accessible publicly, with the first expected to appear in 2027.

Operators would also have to declare how their water use relates to local water stress, and whether they can hand services back to the surrounding energy system, such as by re-using their waste heat.

What the label does not do is arguably as telling. The scheme "would not impose limits on their energy and water use or require data centres to disclose their total power use." The Commission itself says the label could serve as "a precursor for mandatory minimum standards on data centres' water and energy efficiency" that the EU is still developing.

The context matters. Brussels wants to "triple its data centre capacity over the next seven years, to support the rapid development of artificial intelligence and attempt to cut reliance on US Big Tech," an expansion that Reuters notes "risks straining Europe's energy grids, depleting water resources and increasing CO2 emissions" if the buildout is not policed.

That backdrop lines up with a run of infrastructure stories on our radar; a Data Center Watch tally counted dozens of US AI data-centre projects blocked or delayed in Q2 as local opposition to water and grid draw tightened.