For data center operators in Europe, energy reporting has moved decisively from voluntary best practice into binding regulatory obligation. The recast Energy Efficiency Directive, alongside its implementing delegated regulations, has established one of the most structured data center transparency regimes anywhere in the world — and the next phase of that regime is set to arrive in the second quarter of 2026.
What the Reporting Obligation Actually Requires
Under Article 12 of the recast Energy Efficiency Directive, data centers in the EU with installed information technology power demand of 500 kW or more must monitor and disclose a defined set of operational metrics — energy consumption, temperature set points, waste heat utilisation, water use, and renewable energy share — into a common European database established for this purpose. This is not a one-time disclosure; it is a recurring annual obligation, with the sector having already completed its first two reporting cycles in 2024 and 2025, and preparing for a third cycle in May 2026.
Individual facility-level data submitted to the database is treated as confidential and is not published in identifiable form, addressing a legitimate commercial sensitivity concern. What is published is aggregated data at EU and member state level — sufficient for policymakers and the public to track sector-wide trends without exposing competitively sensitive facility-specific information.
The Rating Scheme Is the Next, More Consequential Step
- A 2024 delegated regulation established the European database and the first phase of reporting obligations
- A second delegated regulation, consulted on through a public feedback process running from late March to late April 2026, sets out how the information collected will be used to generate an actual sustainability rating for each reporting facility
- This rating scheme is scheduled for adoption as part of a broader Data Centre Energy Efficiency Package in the second quarter of 2026, alongside a Strategic Roadmap on Digitalisation and AI for the energy sector
- Ratings will be issued as electronic labels generated automatically by the European database, intended to make energy use more transparent and support better-informed procurement and policy decisions
Once a rating label exists, energy performance stops being a private operational matter and becomes a factor every counterparty — tenants, investors, lenders, regulators — can see and compare directly.
Why This Matters Beyond Pure Compliance
A formal rating scheme changes the commercial stakes of energy performance considerably. Once comparable, standardised ratings exist, they are very likely to feed into institutional investment screening criteria, sustainability-linked lending covenants, and increasingly sophisticated tenant procurement processes that explicitly favour higher-rated facilities — effects that go well beyond the original regulatory compliance purpose of the reporting scheme itself.
This creates a meaningful first-mover advantage for facilities designed from the outset with comprehensive, accurate sub-metering and a genuine multi-metric sustainability profile, since retrofitting this level of measurement and performance onto an existing facility after a rating scheme is already operational is considerably more disruptive and costly.
Preparing for the Rating Scheme Now
DATAPERT helps clients prepare for this evolving regulatory landscape well ahead of mandatory compliance deadlines, integrating reporting and rating readiness into our sustainability strategy and broader data center development advisory. Start a project to assess your facility's readiness for the EU's data center rating scheme.
