EED data center energy reporting, built as a pipeline

Connect DCIM and metering data to Delegated Regulation 2024/1364's KPI set, calculate PUE, WUE, ERF and REF with a traceable formula, and file to the European database on time—every 15 May, not just the year you set it up.

Check the 500 kW threshold Map your reporting pipeline

The 500 kW threshold is measured per site, not per company

Delegated Regulation (EU) 2024/1364 applies to a data centre with an installed information technology power demand of at least 500 kW. That is a facility-level test. An operator with twelve sites across the EU and one 600 kW site reports that one site; a colocation tenant occupying part of a larger facility needs a clear allocation record showing which portion of the site's IT load is theirs to report.

Scope question	Current EU rule	System record required
In-scope site	Installed IT power demand of at least 500 kW, assessed per data centre under Delegated Regulation (EU) 2024/1364	Site register, IT power demand method, measurement date, owner and reviewer
Multi-tenant / colocation	The operator of the facility reports; tenant-level allocation is a contractual and metering matter, not a separate EU threshold	Facility operator of record, tenant sub-metering or allocation formula, and lease-level evidence
Below-threshold sites	No mandatory Article 12 reporting duty for that individual site	Documented threshold assessment showing why the site is excluded, kept for the next review cycle
Reporting entity	The data centre operator, which may differ from the building owner or IT equipment owner	Operator identity, EU Login / national-platform account, and a designated filing owner per site

Binding obligation

Article 12 of the recast EED requires Member States to mandate this publication duty for qualifying operators. Recast EED, Article 12.

Mechanics come from the DR

The threshold, KPI list, deadlines and database format all live in Delegated Regulation (EU) 2024/1364, not the directive text itself.

Growth triggers a re-check

A site that adds racks or capacity can cross 500 kW mid-year. Re-run the threshold assessment on a schedule, not only when someone remembers to.

Keep the obligation and the mechanism separate

Article 12 is the legal duty. Delegated Regulation (EU) 2024/1364 is the operating manual: it defines who reports, what they report, and by when. Treat them as two layers in the system rather than one undifferentiated "EED compliance" requirement.

Directive (EU) 2023/1791

Article 12 requires Member States to make data centre operators publish energy-performance and sustainability information. It sets the obligation; national transposition and the delegated act supply the detail. Recast EED.

Delegated Regulation 2024/1364

In force since 2024. Sets the 500 kW threshold, the Annex I/II data set, deadlines, and the European database submission format. Delegated Regulation.

Version every reporting rule

Store the legal instrument, article, deadline, KPI definition and reporting period beside each filed value. When a future amendment changes a KPI definition or threshold, the mapping should never silently rewrite an already-filed year — only a controlled resubmission should touch historical data.

Deadlines are annual; routing depends on the Member State

The filing calendar is simple once it's built. The routing is not: some countries operate a national platform that forwards to the European database, others expect direct submission. Build the pipeline to support both paths per country, not one hardcoded destination.

First report filed

Calendar year 2023 activity was due 15 September 2024 — the one-off baseline filing.

Ongoing cadence

From the second report onward, each filing covers the preceding calendar year and is due 15 May.

Next filing for most operators

15 May 2027, covering calendar-year 2026 activity — build the annual close around this date.

Routing check per country

Confirm whether the relevant Member State has designated a national platform or expects direct submission to the European database.

Access and identity

Reporting typically requires an EU Login account (or the national-platform equivalent) tied to a named filing owner per site.

The European Commission's own topic page confirms the national-platform-or-direct-submission split and hosts the current access guidance for the European database. Energy performance of data centres.

Roughly two dozen indicators, in three thematic blocks

Annex I of the delegated regulation defines the general and site-identifying information; Annex II defines the performance indicators. In practice the KPI set groups into energy and sustainability, ICT equipment, and data traffic.

Energy & sustainability

Power Usage Effectiveness (PUE)
Water Usage Effectiveness (WUE)
Energy Reuse Factor (ERF)
Renewable Energy Factor (REF)
Total energy consumption
Temperature set points
Waste-heat utilisation
On-site / procured renewable share

ICT & data traffic

Installed IT power demand
Floor area and rack capacity
Server, storage and network inventory
Data-traffic volumes
Storage capacity utilisation
Compute capacity utilisation

Indicator	What it measures	Primary source data
PUE	Total facility energy divided by IT equipment energy — the standard efficiency ratio	Utility meters, sub-metering at the IT load, BMS energy logs
WUE	Water consumed per unit of IT equipment energy	Water utility bills or sub-meters, cooling-system water records
ERF	Share of the facility's energy exported and reused elsewhere (e.g. district heating)	Heat-export metering, offtake agreements, BMS heat-recovery logs
REF	Share of energy consumption sourced from renewables	PPAs, guarantees of origin, utility renewable-mix disclosures, on-site generation meters

The delegated regulation is the authoritative definition of the KPI set and its Annex I/II structure — do not rely on a vendor's summary table as the source of truth for a submission. Delegated Regulation (EU) 2024/1364.

A sustainability label is coming, but it isn't law yet

Delegated Regulation (EU) 2024/1364 was step one: build the European database and collect the KPIs. Step two is a second delegated regulation that would turn those KPIs into an automatically issued electronic sustainability label. As of this page's review date, step two is still a draft.

In force today

Delegated Regulation (EU) 2024/1364: the reporting obligation, the 500 kW threshold, the KPI set, and the European database itself. This is what a compliance pipeline must satisfy right now.

Still a draft

The rating/labelling delegated regulation: a revised draft was published 2 July 2026 (originally registered 26 March 2026). It is not adopted or in force. Public material anticipates first labels from 15 August 2027, covering energy efficiency, renewable sourcing, heat reuse, water use, circularity and grid functions — contingent on adoption actually happening on that timeline. Commission consultation notice.

Build for the label without depending on it

Because the label reuses KPIs already collected under 2024/1364, a well-built reporting pipeline is most of the work for label-readiness. Don't build a separate system for the draft scheme — extend the existing KPI pipeline when the rating regulation is actually adopted and published.

Preserve the meter reading, not just the ratio

PUE, WUE, ERF and REF are derived values. The durable record is the underlying meter reading, DCIM export or utility statement. If a meter is recalibrated or a source system is replaced, the system should show exactly which filed KPIs depended on it.

Facility metering

Utility meters, sub-meters at IT load and cooling plant, reading interval, calibration date and unit.

BMS / DCIM export

Building- and data-centre-management-system exports for power, temperature set points and heat-recovery events.

Water records

Utility statements or sub-meters for cooling-tower and humidification water consumption.

Renewable evidence

PPAs, guarantees of origin, on-site generation meters and utility grid-mix disclosures for REF.

ICT asset inventory

Server, storage and network asset register with installed IT power demand and rack capacity.

Submission record

KPI values as filed, reporting period, submission channel (national platform or direct), timestamp and filer.

The auditable ratio

PUE = total facility energy ÷ IT equipment energy.

WUE, ERF and REF follow the same pattern: a numerator and denominator, each traceable to a source reading. Store unrounded intermediate values and round only the published figure under a documented policy.

Meters are data: Never hardcode a meter's reading into a spreadsheet formula. It needs an ID, unit, interval and calibration record.
Estimates stay visible: Where a sub-meter is missing, tag the allocation or estimation method so reviewers can see it.
Periods lock: Once a year is filed, changes require a documented, approved resubmission — not a silent edit.
Multi-site consistency: Use the same calculation method across sites so a portfolio-level view is actually comparable.

A green-coding audit covers what EED reporting can't see

EED Article 12 measures the facility. It has nothing to say about whether your own application is provisioned for peak load it rarely hits, or whether a batch job runs three times longer than it needs to. The Software Carbon Intensity (SCI) specification, now ISO/IEC 21031:2024, scores that layer.

The SCI formula

SCI = ((E × I) + M) ÷ R

E is the energy the software consumes, I is the carbon intensity of the energy source, M is the embodied carbon of the hardware it runs on, and R is the functional unit — per user, per API call, per batch, whatever makes the score comparable across versions. SCI Specification.

What an audit produces

A measured energy baseline per workload, not an estimate.
An agreed functional unit so the score means something to engineering.
An embodied-carbon figure for the underlying compute, using published or vendor-disclosed data.
A prioritized list of refactors ranked by SCI impact, not by intuition.

SCI reached ISO standard status as ISO/IEC 21031:2024, giving procurement teams and internal auditors a citable methodology rather than a vendor-proprietary score. ISO standard status.

Where it plugs into the EED pipeline

An SCI audit consumes the same infrastructure telemetry a good EED pipeline already collects — per-rack or per-VM power draw, utilization, and the facility's carbon intensity from REF. Layer the application-level energy measurement on top instead of building a second, disconnected data pipeline.

Controls that survive a Member State review

Even without a harmonized EU penalty schedule, treat every filed KPI as something a reviewer could ask you to defend. Assign each control an owner, frequency, source population and retained artifact.

Site register control

Reconcile the reporting-site list against real estate and colocation contracts each cycle; flag new or decommissioned sites.

Threshold control

Re-run the 500 kW installed IT power demand assessment on a schedule, not only at initial onboarding.

Metering control

Validate meter calibration dates, reading intervals and unit conversions before they feed a KPI calculation.

Calculation control

Test PUE/WUE/ERF/REF formulas, unit conversions and rounding with known-answer cases each release.

Evidence control

Retain the source export, calculation trace, reviewer and approval for every filed year.

Submission control

Confirm routing (national platform vs. direct), account ownership and successful transmission receipt.

Deliver one site's filing before scaling the portfolio

Prove the chain from raw meter reading to accepted submission on one site first. Once metering, calculation and filing work reliably there, replicate the pipeline — not the manual spreadsheet — across the rest of the portfolio.

Confirm scope per site
Assess installed IT power demand for every site, document exclusions, and identify the operator of record for each.
Connect metering and DCIM
Build read-only extracts from utility meters, BMS/DCIM exports, water records and the ICT asset inventory.
Implement the KPI calculations
Codify PUE, WUE, ERF and REF formulas against Annex II definitions, with versioned inputs and test cases.
Route and submit
Determine national-platform vs. direct-database routing per country and automate the filing with a retained receipt.
Add the green-coding layer
Extend telemetry collection to application-level energy and embodied-carbon data for an SCI baseline.
Prepare for the rating scheme
Track adoption of the draft labelling regulation and extend the same pipeline once it enters into force.

Acceptance criteria for the pipeline

Reproducible

The same locked meter readings and formulas produce the same KPI values on rerun.

Reconcilable

Every filed value ties back to a source meter reading, DCIM export or utility statement.

Explainable

A reviewer can move from a filed KPI to its calculation, source data and approval.

Deadline-aware

The pipeline surfaces the 15 May cut-off well before it arrives, per site and per country.

Routing-correct

Submission targets the right destination — national platform or direct database — per Member State.

Extensible

The same pipeline can absorb the rating scheme's KPIs once that regulation is adopted, without a rebuild.

EED data center reporting FAQ

Which data centres are actually in scope of EED Article 12 reporting?

Delegated Regulation (EU) 2024/1364 sets the threshold at an installed information technology power demand of at least 500 kW, assessed per data centre, not per company. An operator running several qualifying sites across the EU reports each site separately to the European database; a site below 500 kW IT power demand has no mandatory reporting duty under this regime even if the operator's total EU footprint is larger.

When is the next report due?

The first report, covering calendar year 2023, was due 15 September 2024. From the second report onward the deadline moved to 15 May each year for the preceding calendar year, so the report covering 2026 activity is due 15 May 2027. Build the pipeline around that annual 15 May cut-off rather than a one-time filing.

Do we report to Brussels directly, or to our own country?

It depends on the Member State. Some countries operate a national platform that forwards data to the European database on data centres; where no national platform exists, the operator reports directly to the European database through its common user interface or API. Confirm the routing for each country where a qualifying site sits — it is a per-Member-State decision, not an EU-wide constant.

Is the EU data centre sustainability rating/label already mandatory?

No. As of this page's 2 September 2026 review, the rating-scheme delegated regulation — the instrument that would turn reported KPIs into an electronic sustainability label — was still a draft. The Commission published a revised draft on 2 July 2026 (originally registered 26 March 2026) and has not adopted or published it in the Official Journal. Current public material anticipates first labels from 15 August 2027, but that date depends on adoption still going ahead. Only the 2024/1364 reporting obligation is binding today.

What indicators does the European database actually require?

Delegated Regulation (EU) 2024/1364 specifies roughly two dozen indicators across three thematic blocks: energy and sustainability (including Power Usage Effectiveness, Water Usage Effectiveness, Energy Reuse Factor and Renewable Energy Factor), ICT equipment characteristics, and data-traffic volumes. Annex I sets out the general and site information required; Annex II sets out the performance indicators themselves.

Are there penalties for missing the reporting deadline?

The delegated regulation itself does not set out EU-level sanctions for late or incomplete submissions. Enforcement runs through each Member State's own transposition of the Energy Efficiency Directive, so the practical consequence of a missed filing depends on national law, not a single EU-wide penalty schedule. Treat the 15 May deadline as firm regardless — a late filing is still a compliance gap even without a harmonized fine.

How does 'green coding' relate to a hardware-focused directive like the EED?

EED Article 12 measures the facility: power, cooling, water and ICT hardware. It says nothing about how efficiently the software running on that hardware uses the resources it's given. The Software Carbon Intensity specification (ISO/IEC 21031:2024) fills that gap at the application layer, scoring a workload's carbon emissions per functional unit. Pairing an EED reporting pipeline with an SCI audit gives you both halves: what the data centre costs, and what your own code is doing to that cost.

Primary sources and status

Reviewed 2 September 2026. The Energy Efficiency Directive requires Member State transposition; Delegated Regulation (EU) 2024/1364 is directly applicable and in force. The data centre rating/labelling delegated regulation was still a draft, not adopted or published in the Official Journal, on the review date. ISO/IEC 21031:2024 is a voluntary international standard, not EU law. Yarify's data architecture, controls and delivery sequence are engineering recommendations, not legal advice.