EU Energy Efficiency Directive Data Centre Reporting Workflow

Start with a site-by-site inventory for EU facilities and mark the installed information technology power demand for each data centre. The Article 12 reporting threshold is at least 500 kW of installed IT power demand.

Record why each site is in scope, out of scope, or excluded. The Directive excludes data centres used for, or providing services exclusively with the final aim of, defence and civil protection. Recital 86 also frames the obligation around spaces and equipment serving primarily or exclusively data-related functions, such as server rooms and associated cooling, lighting, battery arrays, and uninterruptible power supplies.

For each in-scope data centre, collect the minimum information listed in Annex VII before the annual submission window. Separate standing site attributes from annual performance metrics so the team can reuse stable fields while refreshing the prior-year performance data.

The annual evidence pack should include data-centre identity and ownership, floor area and installed power, annual incoming and outgoing data traffic, data stored and processed, and key performance indicators covering energy consumption, power utilisation, temperature set points, waste heat utilisation, water usage, and renewable-energy use.

Treat the reporting file as a controlled evidence pack, not a one-off spreadsheet. Each metric should trace to the source system, meter, facility record, platform export, procurement record, or calculation workbook used to produce it.

Before approval, check that the data covers the last full calendar year, that site boundaries match the in-scope inventory, that confidential or trade-secret information is reviewed before publication, and that explanations exist for material changes from the previous reporting cycle.

Use 15 May as the normal annual reporting checkpoint. The Commission announcement for the delegated regulation stated that operators report KPIs to the European database by 15 September 2024 for the first cycle and then by 15 May in 2025 and subsequent years.

After submission, retain the submitted data, approval record, publication review, and evidence links. The Commission database is public at an aggregated level, and the Commission has published analysis of data submitted in the 2024 reporting period, so teams should expect their data to support sector-level assessment.

Do not close the workflow at submission. Article 12 links the reported data to Commission assessment, possible further measures, minimum performance standards, and the feasibility of a transition toward a net-zero emission data-centres sector.

Maintain a change log for Commission guidance, database instructions, delegated-regulation updates, and internal changes that affect scope or metrics. For data centres with installed IT power demand equal to or greater than 1 MW, Article 12 also says Member States shall encourage owners and operators to take account of the European Code of Conduct on Data Centre Energy Efficiency best practices.