EU Energy Efficiency Directive Data centre reporting and performance

Member States must require owners and operators of data centres in their territory to publish Annex VII information where the data centre has installed information technology power demand of at least 500 kW. The reporting trigger is tied to the data centre and its installed IT power demand, not to enterprise size, corporate revenue, or a generic sustainability-reporting category.

The Directive excludes data centres used for, or providing services exclusively with the final aim of, defence and civil protection. A separate Article 12 provision says Member States should encourage data centres with installed IT power demand equal to or greater than 1 MW to take account of the European Code of Conduct on Data Centre Energy Efficiency.

The Directive states that the Article 12 publication obligation applies by 15 May 2024 and every year thereafter. The Commission news release on Delegated Regulation (EU) 2024/1364 describes the first reporting date for operators as 15 September 2024, followed by 15 May in 2025 and subsequent years.

The Commission has prepared a European database for the energy performance and water footprint of data centres. Article 12 says the database includes information communicated by obligated data centres and is publicly available at aggregated level, so internal evidence should separate site-level submission data from what appears in public aggregated outputs.

Annex VII groups the required information into site identity, capacity and activity data, and performance indicators for the last full calendar year. A useful reporting pack should therefore combine legal-entity ownership data with technical facility data and measured annual performance values.

The Directive names performance topics rather than a single metric: energy consumption, power utilisation, temperature set points, waste heat utilisation, water usage, and use of renewable energy. Until the delegated act under Article 33(3) applies, Annex VII points to the CEN/CENELEC EN 50600-4 data-centre facilities and infrastructure series where applicable.

Delegated Regulation (EU) 2024/1364 is the first phase of an EU-wide scheme to rate data-centre sustainability. The Commission states that the delegated act sets out the information and key performance indicators to be reported and defines the first sustainability indicators for rating data centres.

Article 12 also required the Commission to assess available submitted data by 15 May 2025 and report to the European Parliament and Council, including possible further measures such as minimum performance standards and a net-zero data-centre-sector feasibility assessment. Teams should avoid assuming a final minimum-performance standard unless they can point to a later binding measure.

A defensible evidence file should let a reviewer trace each public or database-reported value back to the site boundary, meter or operational system, calculation method, and approval owner. The highest-risk gaps are usually threshold calculations, unreviewed confidentiality exclusions, and performance numbers copied from dashboards without a stable reporting boundary.

Because Article 12 data can feed public transparency, aggregated database outputs, Commission assessment, and the rating scheme, the evidence pack should be maintained as a recurring annual reporting file rather than a one-off compliance memo.