Read Beyond the Data-Centre Grade

The Commission act proposes annual energy and water grades from 15 August 2027, without exact site totals. Heat-readiness fields do not establish actual delivery.

Do not confuse a ratio with a total

Reporting rules define PUE as facility energy divided by IT energy and cover installed IT demand of at least 500 kW.

Consider two hypothetical sites. The first uses 12 GWh overall and 10 GWh for IT: PUE 1.2. The second uses 1.5 GWh overall and 1 GWh for IT: PUE 1.5. The first has the better ratio but consumes eight times as much energy. These are illustrative figures, not measurements of real providers.

That arithmetic does not make either site the right home for a particular workload. Perhaps the larger site delivers many more useful transactions. Perhaps the smaller one runs equipment that your application cannot use. The purchasing question is what it takes to deliver your service, not which facility wins a comparison detached from the work it does.

Ask which disclosure you are reading

The 2024 regulation makes the EU database public at national and Union aggregate levels while protecting individual submissions. Separately, Article 12 and Annex VII of the Energy Efficiency Directive require specified operator disclosures, with confidentiality exceptions. A missing figure on a label is not proof that every other disclosure route is closed.

For a procurement exercise, request the facility identity, the period covered and absolute energy and water figures alongside the proposed grade. Ask whether the figures cover the whole site or an allocated share of your service. A provider-wide average cannot answer a question about the building that actually hosts your systems unless the provider explains that connection.

Keep the resilience decision separate. BlackTree’s critical-infrastructure explainer illustrates how a data centre can depend on one power route despite strong technical controls. In a supplier review, ask where recovery would take place and what that alternative changes about the environmental comparison. Do not allow one attractive badge to stand in for both decisions.

The scrutiny clock has changed

The Parliament procedure file records a two-month extension requested on 6 October 2026 and currently says awaiting committee decision. The Directive conditions entry into force on no objection from Parliament or Council; the act provides for entry 20 days after Official Journal publication.

Minimum standards are a different proposal. The Commission’s policy page puts the consultation deadline at 14 December 2026 and the planned proposal in Q2 2027. Neither a consultation nor an efficiency grade should be described as a consumption cap already imposed.

For now, build the supplier comparison so it can accommodate a label without depending on one. Record what you bought, which site will deliver it and how the provider substantiates the resource figures. When an official grade becomes available, it should strengthen that evidence, not replace the questions that made the comparison meaningful.

Primary sources

• Commission act C(2026) 3472 and annexes, 21 September 2026.
• Parliament procedure 2026/2895(DEA), checked 14 October 2026.
• Directive (EU) 2023/1791, Article 12, Article 34 and Annex VII.
• Regulation (EU) 2024/1364, reporting and database rules.
• Commission policy page, checked 14 October 2026.