How does a Member State combine environmental assessments for a CADA zone?

Under the proposed Cloud and AI Development Act (CADA), Member States must consolidate environmental due diligence for data centre projects located within

Summary Under the proposed Cloud and AI Development Act (CADA), Member States must consolidate environmental due diligence for data centre projects located within designated "acceleration zones." Article 10(3) mandates that where spatial or development plans for these zones are subject to assessment under the Strategic Environmental Assessment (SEA) Directive and the Habitats Directive, these assessments shall be combined. Where applicable, this combined assessment must also address impacts on water bodies under the Water Framework Directive. This comprehensive, zone-level evaluation is a strict prerequisite: Article 13(3) requires that "before issuing the aggregated baseline permit," Member States must carry out all necessary procedures and assessments applicable at the acceleration zone level. By shifting the burden of broad environmental scoping from individual projects to the zone level, CADA aims to reduce administrative fragmentation and accelerate the deployment of sustainable computing capacity, while maintaining full compliance with EU environmental law.

Detail

The proposed Cloud and AI Development Act (CADA) represents a structural shift in how environmental due diligence is conducted for critical digital infrastructure. Rather than repeating complex environmental evaluations for every individual data centre, the proposal establishes a framework for "data centre acceleration zones" where regulatory processes are harmonised and accelerated at a strategic level. A cornerstone of this acceleration is the mandatory combination of various environmental assessments at the zone level, ensuring that broad impacts are addressed once, comprehensively, before individual permits are granted.

The Legal Mandate to Combine Assessments

The obligation to merge these distinct environmental evaluations is explicitly codified in Article 10(3) of the CADA proposal. This provision addresses the intersection between spatial planning, biodiversity protection, and water management. It states that where national, regional, or local authorities are preparing spatial and development plans for data centre projects in acceleration zones, and these plans are subject to assessment under specific EU directives, those assessments "shall be combined."

The directives referenced in this mandatory combination are:

Directive 2001/42/EC: The Strategic Environmental Assessment (SEA) Directive, which requires an environmental assessment for certain plans and programmes that are likely to have significant effects on the environment.
Directive 92/43/EEC: The Habitats Directive, specifically Article 6, which requires appropriate assessments of plans or projects likely to have a significant effect on a Natura 2000 site.

Article 10(3) further clarifies the scope of this combination by stating: "Where applicable, the combined assessment shall also address the impact on potentially affected water bodies referred to in Directive 2000/60/EC" (the Water Framework Directive). This ensures that water management considerations—critical for data centres due to their cooling requirements—are integrated into the same strategic evaluation process. This prevents the "siloed" assessments that often delay project timelines, ensuring that biodiversity, water resources, and general environmental impacts are evaluated in a single, coherent strategic document.

The Aggregated Baseline Permit and the Sequence of Operations

The combined environmental assessment is not merely a procedural formality; it serves as the foundational evidence required to unlock the aggregated baseline permit. Article 13(2) of CADA requires Member States to prepare and issue an aggregated baseline permit for each designated acceleration zone. This permit authorises the deployment of data centres within that specific zone and covers the permits and administrative authorisations commonly required for data centre projects located there, excluding installation-specific permits.

The sequence of operations is legally binding and critical for compliance. Article 13(3) stipulates unequivocally: "Before issuing the aggregated baseline permit referred to in paragraph 2, Member States shall carry out all necessary procedures and assessments, including any relevant environmental assessments, planning procedures and evaluations applicable at the level of the acceleration zone."

This creates a strict "gatekeeping" mechanism:

Designation: The Member State designates the acceleration zone (under Article 10(1)).
Combined Assessment: The authority conducts the combined SEA, Habitats, and Water Framework Directive assessments as required by Article 10(3).
Permit Issuance: Only after these assessments are complete can the aggregated baseline permit be issued under Article 13(2).
Project Deployment: Once the baseline permit is in place, individual data centre projects deployed within the zone generally only need to obtain additional permits for activities falling outside the scope of that baseline permit (Article 13(4)).

This sequencing ensures that no data centre can be legally deployed in an acceleration zone without the prior completion of the strategic environmental review. It prevents the scenario where individual projects are approved in isolation, potentially leading to cumulative environmental damage that a zone-level assessment would have identified and mitigated.

Strategic vs. Project-Level Assessments

It is vital to distinguish between the zone-level assessments required by Article 10 and the project-level assessments that may still be required for specific installations. CADA recognises that data centre projects in acceleration zones are considered "strategic projects" under a separate regulation on speeding-up environmental assessments (referenced in Article 13(1)).

While the zone-level assessment covers broad impacts—such as cumulative effects on local biodiversity, regional water usage caps, and spatial planning coherence—individual projects may still require specific environmental assessments if they introduce unique risks or exceed the parameters defined in the zone's baseline. Article 13(4) clarifies that "Data centres deployed in acceleration zones shall be required to obtain additional permits only for activities falling outside the aggregated baseline permit."

However, by conducting the strategic assessments at the zone level first, Member States eliminate the need to repeat broad environmental scoping for every new data centre operator. This creates a "clean slate" for developers, who can rely on the aggregated baseline permit for standard requirements, focusing their efforts only on site-specific deviations. This approach aligns with the CADA objective of tripling EU data centre capacity while ensuring balanced geographic deployment and sustainability.

Sustainability and Grid Integration Context

The combined assessment also intersects with broader sustainability and infrastructure requirements. Article 11(1) mandates that Member States use key performance indicators from Delegated Regulation (EU) 2024/1364 when setting sustainability requirements for data centres in acceleration zones. The environmental assessments conducted under Article 10(3) must therefore be robust enough to validate compliance with these energy efficiency and environmental protection standards.

Furthermore, the assessment process must account for grid connectivity. Article 10(2) requires Member States to conduct a comprehensive analysis of energy needs for acceleration zones, including the identification of required energy infrastructure capacity. While grid connection permits are explicitly excluded from the aggregated baseline permit (Article 13(2)), the environmental assessment must consider the broader energy infrastructure impacts. This ensures that the zone's development aligns with national network development plans and anticipatory grid investments, preventing bottlenecks where a data centre is permitted but cannot connect to the grid due to unassessed capacity constraints.

What this means for you

For public-sector procurement officers, planning authorities, and environmental agencies, the implementation of CADA's combined assessment requirement represents a major operational shift. You will need to coordinate closely across departments to ensure that the zone-level assessments are comprehensive, legally defensible, and completed before any baseline permits are issued.

Key actions for authorities:

Inter-Agency Coordination: Establish a cross-departmental task force to manage the combined SEA, Habitats, and Water Framework Directive assessments. These cannot be handled in isolation; the data and conclusions must be integrated into a single strategic evaluation document as required by Article 10(3).
Strict Sequencing: Remember that the aggregated baseline permit cannot be issued until these assessments are complete. Article 13(3) makes this a mandatory precondition. Delays in the environmental assessment phase will directly delay the entire acceleration zone's operational readiness and the ability to issue permits to developers.
Scope Definition: Clearly define what is covered by the aggregated baseline permit. Ensure that the environmental assessments explicitly address the cumulative impacts of multiple data centres, so that individual developers are not burdened with repeating strategic-level environmental due diligence.
Water Body Considerations: Pay particular attention to the Water Framework Directive. As data centres are significant water consumers for cooling, the combined assessment must rigorously evaluate impacts on local water bodies to avoid future legal challenges or project suspensions.

Common misconceptions

Misconception 1: Individual projects no longer need any environmental assessments. This is incorrect. While the strategic assessments (SEA, Habitats) are combined at the zone level, individual data centre projects may still require specific environmental assessments if they fall outside the scope of the aggregated baseline permit or if they present unique, site-specific risks not covered by the zone-level evaluation. Article 13(4) clarifies that data centres must still obtain additional permits for activities falling outside the baseline permit.

Misconception 2: The aggregated baseline permit includes grid connection approvals. No. Article 13(2) explicitly excludes grid connection permits from the aggregated baseline permit. While the environmental assessment must consider energy needs and grid impacts, the actual permission to connect to the electricity grid remains a separate administrative process, likely governed by national energy laws and grid operator procedures.

Misconception 3: Combining assessments reduces environmental protection standards. CADA does not lower environmental standards; it streamlines the process. The combined assessment must still comply with all requirements of the SEA Directive, Habitats Directive, and Water Framework Directive. The goal is to avoid duplication and accelerate decision-making, not to bypass rigorous environmental scrutiny. In fact, by assessing cumulative impacts at the zone level, the approach may provide a more holistic view of environmental risks than fragmented, project-by-project reviews.

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