Summary Data centres deployed in EU-designated "acceleration zones" under the proposed Cloud and AI Development Act (CADA) must report sustainability performance using a specific, harmonised set of key performance indicators (KPIs). As proposed, Article 11(1) of CADA mandates that Member States set sustainability requirements based exclusively on the KPIs defined in Commission Delegated Regulation (EU) 2024/1364. These mandatory metrics include Power Usage Effectiveness (PUE), Water Usage Effectiveness (WUE), carbon emissions, the share of renewable energy, and energy reuse (waste heat recovery). This framework ensures that the rapid deployment of compute capacity in these zones does not come at the expense of the EU's climate and energy efficiency goals, creating a unified standard for environmental reporting across the single market.

Detail

The proposed Cloud and AI Development Act (CADA) seeks to address the critical shortage of computing capacity in the EU by establishing "data centre acceleration zones." These are specific territories where Member States facilitate the rapid deployment of data centres through streamlined permitting and regulatory support. However, this acceleration is not unconditional; it is strictly tied to high environmental standards. The Act ensures that the expansion of digital infrastructure aligns with the EU's broader climate neutrality and energy efficiency objectives.

The Legal Basis: Article 11(1) and the Common Rating Scheme

The core obligation for sustainability reporting is explicitly defined in Article 11(1) of the CADA proposal. This provision removes the discretion for Member States to invent their own local metrics, thereby preventing regulatory fragmentation. The text states:

"When setting sustainability requirements for data centres deployed in acceleration zones, Member States shall use the key performance indicators specified in Delegated Regulation (EU) 2024/1364 pursuant to Directive (EU) 2023/1791 under Annex II, from (a) to (n)."

This clause creates a direct legal link between CADA's acceleration zones and the existing Commission Delegated Regulation (EU) 2024/1364. This delegated regulation establishes the first phase of the common Union rating scheme for data centres, which operates under the framework of the Energy Efficiency Directive (Directive (EU) 2023/1791).

By referencing items "(a) to (n)" in Annex II of the delegated regulation, the proposal ensures that the full suite of defined indicators must be considered when Member States set their national sustainability requirements. This means that any data centre operator seeking to benefit from the accelerated permitting processes in these zones must be prepared to measure and report against this specific, EU-wide standard.

Key Performance Indicators (KPIs) for Reporting

While the full technical definitions are contained in Delegated Regulation (EU) 2024/1364, the CADA proposal and its explanatory memorandum highlight several critical metrics that data centre operators in acceleration zones must monitor. These indicators are designed to measure energy efficiency, resource consumption, and environmental impact comprehensively.

  1. Power Usage Effectiveness (PUE): PUE is the primary metric for assessing energy efficiency in data centres. It is calculated as the ratio of total facility energy consumption to the energy consumed by IT equipment. A PUE of 1.0 represents a perfectly efficient data centre where all energy is used by IT equipment, with none lost to cooling or other overheads. The CADA proposal's explanatory memorandum (specifically Annex I, Grand Challenge 1) sets an ambitious target for the EU to achieve an average PUE of 1.15 across the Union. Consequently, new data centres in acceleration zones will be expected to demonstrate state-of-the-art efficiency close to this benchmark. Operators must report their PUE to prove compliance with national sustainability requirements derived from the common rating scheme.

  2. Water Usage Effectiveness (WUE): WUE measures the amount of water consumed by the data centre per unit of IT load (typically expressed in litres per kilowatt-hour). Given the increasing scrutiny on water usage in data centre cooling systems, particularly in water-stressed regions, WUE is a critical KPI. Article 11(1) requires that the indicators from the rating scheme, which include water consumption metrics, be used. Operators must therefore track and report water usage to ensure they are not depleting local water resources disproportionately.

  3. Energy Reuse and Waste Heat Recovery: The CADA proposal places significant emphasis on the circular economy and energy reuse. Annex I of CADA highlights "waste heat utilisation solutions" as a focal area for innovation under Grand Challenge 1. The common rating scheme includes indicators related to the reuse of energy generated by data centre operations. Data centres in acceleration zones are expected to integrate systems that capture waste heat from IT equipment and cooling systems and redirect it for other purposes, such as district heating for nearby communities or industrial processes. Reporting on the volume of energy reused is part of demonstrating compliance with the sustainability requirements set by Member States under Article 11(1).

  4. Share of Renewable Energy: A central pillar of the CADA sustainability framework is the transition to clean energy. The rating scheme includes indicators for the share of renewable energy in the data centre's power mix. Operators must report the percentage of their energy consumption that comes from renewable sources. The proposal encourages the use of Power Purchase Agreements (PPAs) to secure long-term renewable energy supplies. Article 10(2) further notes that Member States should promote the uptake of PPAs in acceleration zones to ensure that the new compute capacity is powered by clean electricity, thereby supporting the EU's climate neutrality goals.

  5. Carbon Emissions and Climate Resilience: The KPIs also encompass location-based emissions and other environmental impacts. Data centre operators must report on their carbon footprint, including both direct emissions and indirect emissions from purchased electricity. Additionally, the sustainability requirements may include assessments of climate resilience, ensuring that data centres are designed to withstand climate-related risks, as referenced in the designation criteria for acceleration zones under Article 10(1)(h).

Implementation and Member State Obligations

Under Article 11(1), it is the Member States' responsibility to translate these EU-level KPIs into national sustainability requirements for data centres within their designated acceleration zones. This means that while the metrics are harmonized at the EU level, the specific thresholds or targets may vary slightly depending on national contexts, provided they align with the indicators in Delegated Regulation (EU) 2024/1364.

Furthermore, Article 11(2) adds a layer of market fairness, requiring that the allocation and use of resources within acceleration zones take place on "fair, reasonable and non-discriminatory terms." This prevents speculative reservation of resources and ensures that data centre operators who commit to meeting the sustainability reporting requirements have equitable access to the benefits of the acceleration zones.

What this means for you

For data centre operators, cloud service providers, and investors planning to deploy facilities in EU acceleration zones, the sustainability reporting requirements under CADA are not optional best practices but mandatory compliance obligations.

  • Adopt the Common Rating Scheme Early: Do not wait for national implementations to finalize. Begin measuring and reporting your KPIs according to Delegated Regulation (EU) 2024/1364 immediately. Ensure your internal monitoring systems can accurately capture PUE, WUE, renewable energy shares, and waste heat reuse data.
  • Design for Efficiency: Since Member States will use these KPIs to set sustainability requirements, your facility design must prioritize energy and water efficiency from the outset. Aim for a PUE close to the EU target of 1.15 and integrate advanced cooling technologies that minimize water usage.
  • Secure Renewable Energy: Develop strategies to increase your share of renewable energy, such as entering into long-term PPAs. Reporting a high share of renewables will be crucial for demonstrating compliance and potentially gaining competitive advantages in procurement processes that value sustainability.
  • Engage with National Authorities: Stay informed about how your specific Member State is implementing Article 11(1). National requirements may specify additional details on how these KPIs are to be reported or verified. Proactive engagement with national competent authorities can help ensure smooth compliance.
  • Prepare for Audits: The data you report will likely be subject to verification. Maintain robust documentation and transparent reporting practices to demonstrate that your data centre meets the sustainability criteria set by the common rating scheme.

Common misconceptions

  • Misconception: "Sustainability reporting is only about energy efficiency."
    • Reality: While PUE is a key metric, the requirements under Article 11(1) and the common rating scheme encompass a broader range of environmental impacts, including water usage (WUE), carbon emissions, waste heat reuse, and the share of renewable energy. A holistic approach is required.
  • Misconception: "Member States can set their own unique sustainability metrics."
    • Reality: Article 11(1) explicitly mandates that Member States must use the KPIs specified in Delegated Regulation (EU) 2024/1364. This harmonization prevents fragmentation and ensures that sustainability standards are consistent across the EU's acceleration zones.
  • Misconception: "These requirements only apply to large hyperscalers."
    • Reality: The rules apply to all data centre operators deploying facilities in designated acceleration zones, regardless of size. However, Article 11(2) ensures that resource allocation is fair and non-discriminatory, protecting smaller operators from being sidelined by speculative practices.
  • Misconception: "Waste heat reuse is optional."
    • Reality: While the specific targets may vary, the inclusion of energy reuse indicators in the common rating scheme, combined with the emphasis in CADA's Grand Challenge 1, makes waste heat recovery a critical component of compliance. Ignoring this aspect could result in non-compliance with national sustainability requirements derived from the EU scheme.

Related

This is general information about a draft EU regulation, not legal advice.