Data centre energy reporting: what the EED requires
A practical guide to Article 12, Delegated Regulation 2024/1364 and the metering behind credible numbers
The recast EU Energy Efficiency Directive has made data centre energy performance a matter of public record. This report explains who must report, which indicators the delegated regulation defines, when submissions are due, and the metering architecture that makes the numbers credible, then shows how to turn a compliance obligation into an engineering roadmap.
What is inside
- Who has to reportData centres with an installed IT power demand of at least 500 kW fall under Article 12 of the recast EED. The threshold is about installed IT capacity, not utilisation, so facilities below full build-out are commonly in scope.
- The indicators definedDelegated Regulation 2024/1364 sets the key performance indicators: total energy consumption, PUE, WUE, ERF, REF, water consumption and waste heat utilisation. Each one is a number an engineer can improve.
- The metering you actually needCredible reporting needs IT load metered separately from facility load, cooling sub-metered, and water metered. Most reporting problems are metering problems wearing a compliance costume.
- From compliance to savingsThe same baselines and sub-meters that feed the annual submission also surface drift, quantify savings and verify projects to IPMVP. Reporting done properly pays for itself.
Data centre energy performance is now a matter of public record in the EU. Article 12 of the recast Energy Efficiency Directive, given teeth by Delegated Regulation 2024/1364, requires data centres with an installed IT power demand of at least 500 kW to report energy and sustainability indicators annually to a European database. For operators in Ireland, where data centres used 22% of metered electricity in 2024, the scrutiny behind the obligation is not going away.
What the report covers
- Who falls in scope, and why the 500 kW threshold catches more facilities than many operators expect
- The defined indicators: total energy, PUE, WUE, ERF, REF, water consumption and waste heat utilisation
- The annual reporting calendar, with submissions due by 15 May
- The metering architecture that separates credible numbers from estimates
- How to use the same data to find savings, not just file returns
- The pitfalls that produce flattering but indefensible PUE figures
- A 90 day readiness plan an engineering team can start on Monday
Who it is for
Written for data centre operations directors, critical facilities managers and sustainability leads who own the submission, and for the engineers who have to produce the numbers behind it. It assumes no legal background and no patience for vague guidance.
EM3 is an industrial energy engineering consultancy, part of SHV Energy, managing 1.6 billion euro of annual industrial energy spend from Ireland, the UK, Spain and the US. We build the metering, baselines and monitoring that make EED reporting routine, and we verify savings to IPMVP. This report distils what we have learned helping operators move from scrambling for numbers each spring to reading them off a live system.
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