EU proposes energy and water ratings for data centres above 500kW
Written by Rebecca Uffindell Tue 22 Sep 2026
The European Commission has proposed a common rating system for data centres above 500kW, covering their use of energy and water as the EU prepares for a major expansion of its digital infrastructure.
The scheme is intended to make resource use more transparent and provide a common way to assess how individual facilities interact with Europe’s energy system.
Rating System Will Cover Energy and Water
Under the European Commission’s proposal, the common scheme will apply to individual data centres with capacity above 500kW.
The labels will provide information on actual energy and water resource use. They will also consider contributions facilities can make to the wider energy system, including waste-heat reuse and additional clean-energy generation capacity.
The Commission said flexible data centres that can adjust their electricity consumption according to grid conditions could help improve grid stability, integrate more renewable energy, and reduce costs across the electricity system.
Water use is also part of the proposal as policymakers consider the wider resource requirements of data centre expansion.
Reuters reported that the proposal does not impose limits on energy or water consumption at this stage. Instead, the immediate focus is on disclosure and comparison between facilities.
EU Plans to Triple Data Centre Capacity
The proposal comes as the EU looks to triple its data centre capacity over the next five to seven years, creating a tension between the infrastructure required for AI and cloud growth and the resources needed to support it.
The Commission said data centres are projected to consume more than 3% of overall EU electricity demand by 2030, citing analysis from the International Energy Agency.
The IEA has identified rising data centre electricity demand as part of a broader challenge for grids and energy supply as investment in AI infrastructure accelerates.
The proposed rating scheme means data centre expansion could take place alongside greater scrutiny of how efficiently individual facilities use those resources.
Waste Heat and Grid Support Enter the Assessment
The Commission’s approach also considers what data centres can contribute back to local energy systems.
Waste-heat reuse is one example. The Commission has estimated that recovering around half of the total waste heat produced by European data centres could correspond to the heating demand of four million households.
The rating system will also cover clean-energy generation capacity associated with facilities.
That broadens the assessment beyond the resources a data centre consumes. How facilities respond to grid conditions, reuse heat, or contribute additional generation could also form part of how their performance is presented.
Minimum Performance Standards Could Follow
The rating proposal arrives as the Commission separately considers minimum performance standards for data centres operating in Europe.
It has launched a call for evidence and public consultation on those standards as part of its work to integrate data centres more sustainably into the energy system.
No mandatory minimum energy or water-efficiency thresholds have been established through the new rating proposal itself.
The two initiatives nevertheless point towards a more closely measured operating environment. The rating system would first provide a common basis for comparing resource use and energy-system contributions, while the separate consultation considers where minimum performance requirements could eventually be set.
The European Parliament and Council now have two months to scrutinise the legal proposal establishing the rating scheme. If it proceeds, the first labels are expected to appear on individual data centres in 2027.
Written by Rebecca Uffindell Tue 22 Sep 2026
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AI infrastructure European Commission grid flexibility sustainability Waste heatMost Viewed News
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