• Data centres with at least 500 kW of capacity would have to disclose energy and water efficiency under a new EU labelling system.
• EU data centre capacity is expected to more than double to 28 GW by 2030, increasing pressure on electricity grids and water resources.
• The voluntary-performance framework could pave the way for mandatory minimum efficiency standards as Europe expands infrastructure for AI.

Brussels targets the resource cost of AI expansion

The European Commission has proposed new disclosure rules for data centres as Europe prepares for a sharp expansion of computing capacity driven by artificial intelligence.

Under the proposal, operators of data centres with at least 500 kW of capacity would have to disclose how efficiently their facilities use energy and water. The information would feed into an EU-designed rating and labelling system.

The rules come as Brussels seeks to triple Europe’s data centre capacity over the next seven years. The expansion is intended to support AI development and reduce the bloc’s reliance on US technology companies.

But the strategy carries a growing resource challenge. Large data centres can place substantial demands on electricity networks and local water supplies. Without efficiency improvements, rapid expansion could also increase carbon emissions.

The Commission’s proposal attempts to make those impacts more visible to policymakers, investors, operators and local communities.

Efficiency disclosures without consumption caps

The proposed framework would not impose limits on how much energy or water a data centre can consume. Operators would also not have to disclose their total power consumption.

Instead, the EU would require qualifying facilities to report efficiency metrics through a common labelling system.

Water reporting would extend beyond efficiency alone. Operators would have to disclose information about their water consumption in relation to water stress in the surrounding area. That could become increasingly relevant as data centres compete with households, agriculture and industry for water in vulnerable regions.

The framework would also examine how facilities interact with local energy systems. Data centres could disclose whether they provide services that support the grid or reuse waste heat.

Those capabilities could become more important as electricity demand from digital infrastructure grows. Flexible consumption and heat recovery can help integrate large facilities into energy systems rather than treating them solely as new sources of demand.

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Data centre electricity demand set to climb

Data centres currently account for around 2.5% of EU electricity consumption, according to figures published by the bloc in June.

That share is expected to rise as new computing infrastructure comes online.

EU data centre capacity is projected to reach 28 GW by 2030, more than double the 12 GW recorded last year. The expansion creates a policy tension for Brussels. Europe wants greater digital and AI capacity while also pursuing emissions reductions, energy security and more efficient resource use.

The proposed disclosure regime gives policymakers a common dataset for tracking that trade-off.

For operators, it could also create a clearer benchmark for comparing facilities. Energy efficiency, water exposure and grid integration may increasingly influence site selection, financing and relationships with local authorities.

Labels could lead to mandatory standards

The rating system could eventually carry regulatory consequences beyond disclosure.

The EU is already developing mandatory minimum standards for data centre water and energy efficiency. The proposed labels could provide the measurement framework needed to support those requirements.

That makes the initiative relevant for investors and corporate buyers of computing capacity. Efficiency metrics that begin as transparency requirements could eventually affect operating costs, asset values and compliance risk.

They may also influence corporate climate strategies. Companies expanding AI workloads face increasing scrutiny over the electricity, water and emissions associated with their digital infrastructure.

EU member states and lawmakers now have two months to object to the proposed rules. If they do not, the framework will enter into force.

For Europe, the challenge is becoming increasingly clear: expanding the infrastructure needed for AI without allowing its resource demands to undermine energy, water and climate priorities. The proposed labels are an early attempt to put comparable data behind that balancing act.