Doyle and Ors v An Coimisiun Pleanala and Ors [No. 3] (Approved)

Factual and Procedural Background

The Plaintiffs (two environmental non-governmental organisations and three individuals) challenged planning permissions granted by the Commission on 5 April 2024 for (a) a data centre campus proposed on lands adjacent to the Tulla Road and (b) an associated 110kV GIS substation and cable works. Company A submitted the applications including an Environmental Impact Assessment Report (EIAR) and a Natura Impact Statement (NIS). Clare County Council granted permission; third-party appeals were made to the Commission. The Commission conducted an inspector's report, Appropriate Assessment and EIA and ultimately granted permission subject to conditions. The Plaintiffs sought judicial review under the Planning & Development Act and the Climate Action and Low Carbon Development Act alleging failures under s.15 (domestic climate duty), various other statutory and EU law complaints (including EIA/AA and SEA/WFD points), and challenges concerning bats/derogation licensing. The Commission conceded a limited error in relation to a factual matter about a bat roost in the inspector's report; Company A (the notice party) nonetheless defended the permissions. The High Court conducted a modular hearing (Module I and Module II) addressing the conceded bat issue and the remaining pleaded climate and EIA grounds. Judgment was delivered dismissing the proceedings and including a recital clarifying that the conditions and incorporated documentation require the mitigation measures (including the Corporate Power Purchase Agreements (CPPAs) as described in the applicant’s appeal response) to be implemented.

Legal Issues Presented

1. Whether the Commission complied with section 15 of the Climate Action and Low Carbon Development Act 2015 (as amended) — in particular whether the decision fell within the spectrum of outcomes that are, in so far as practicable, consistent with CAP 2023, the national climate objective and mitigation/adaptation objectives.
2. Whether the Commission and inspector lawfully and adequately considered greenhouse gas impacts, carbon budgets/sectoral emissions ceilings and the role of the EU Emissions Trading System (ETS) in assessing consistency under s.15.
3. Whether the Commission lawfully assessed the environmental effects on bat fauna (EIA and AA aspects) and whether a derogation licence was required before grant of consent.
4. Whether mitigation measures (notably CPPAs and other measures described in the EIAR/appeal documents) were required, secured and sufficient to render the permission consistent with the statutory climate duties.

Arguments of the Parties

Plaintiffs' Arguments

• The Commission applied the wrong legal test under s.15 (mere "regard to" rather than performing functions "in a manner consistent with" climate instruments), and failed to explain consistency with CAP 2023 and the national climate objective.
• The Commission failed to quantify or reconcile project emissions with carbon budgets and sectoral emissions ceilings and therefore failed to show the decision fell within the lawful spectrum under Coolglass.
• The Commission irrationally relied on prospective/contingent future renewable-gas/hydrogen or biomethane readiness and on PAS 2050-type reasoning to minimise significance of emissions.
• The Commission failed to require mitigation/offsetting (in particular sufficiently specific or additional CPPAs) and did not secure "additionality" such that the development would undermine national mitigation targets.
• The Commission and inspector inadequately addressed bat impacts; a derogation licence was required prior to grant of consent (EU law/EIA sequencing argument invoking Namur Est and related authorities).

Respondents' Arguments (The Commission and Company A)

• Section 15 requires substance over form; the Commission and inspector engaged with CAP 2023, ETS coverage, emissions quantification, mitigation measures and adaptive design. The decision must be read fairly and in the round (Coyne principle).
• Carbon budgets and SECs are macro instruments implemented nationally; s.15 does not convert them into project-level numerical gates. The EIAR/AWN appeal response quantified emissions and assessed significance; ETS/regulatory context is relevant.
• References to hydrogen/biomethane and "potential" positive effects were conditional and prospective; the inspector did not treat future fuels as a deterministic justification for permission.
• Mitigation commitments (including CPPAs and on-site measures) were before the Commission and are incorporated into the permission by Conditions 1 and 3 (the grant being made in accordance with submitted documentation); the consent therefore secures mitigation measures.
• On the bats/derogation point, the factual position was that a single historical observation did not make continuing roost occupancy probable; a derogation was not shown to have been certainly required at the date of decision and Irish law does not operate a single-permit system like that addressed in Namur Est.

Table of Precedents Cited

Court's Reasoning and Analysis

The Court framed its review by reference to established judicial-review principles: (i) judicial review examines legality not merits; (ii) an eight‑fold cumulative test applies for granting relief in planning judicial review (jurisdiction, legal correctness, pleading specificity, standing, material before decision‑maker, onus of proof, whether any error is more than harmless, and discretion/proportionality); and (iii) decisions must be read fairly and in the round, avoiding undue micro‑parsing.

The Court analysed the s.15 challenge by applying Coolglass: s.15 imposes a legal standard requiring performance of functions "in so far as practicable" consistently with specified climate instruments, but consistency admits a spectrum of lawful outcomes and involves practicability and evaluative judgment. The Court found that (a) the Commission and inspector engaged substantively with CAP 2023, ETS coverage, emissions quantification, mitigation measures and adaptive design; (b) the EIAR and the AWN/appeal response quantified emissions and modelled mitigation scenarios; and (c) the Commission's adoption of the inspector's reasoning, read in context, demonstrated substantive engagement with s.15 rather than mere ritual recitation of words.

On the carbon budgets/SECs point the Court accepted that budgets are mathematical and national, but concluded the statutory architecture does not convert SECs/carbon budgets into project-level numerical gates that individual planning decisions must reconcile arithmetically. The Court emphasised that Applicants bore the onus to demonstrate that the decision fell outside the lawful spectrum and had not discharged that onus with admissible expert evidence displacing the Commission's assessment.

On mitigation, the Court held Conditions 1 and 3 (that the development be carried out in accordance with the submitted plans and that mitigation in the EIAR/NIS be implemented) operate to incorporate the mitigation measures and commitments in the documentation (including Company A's stated willingness to enter CPPAs) into the permission; accordingly the mitigation framework was legally secured by the consent as a matter of construction.

On the bats/derogation issue the Court accepted factual findings (in the earlier module) that the single Leisler's bat observation did not make continued roost occupancy sufficiently probable. The Court concluded that a derogation licence was not shown to have been certainly required at decision date; Namur Est did not operate to invalidate the decision on the facts here. The Court noted the Applicants’ failure to raise some of these points during the process and stressed the limited circumstances in which belated points or new evidence may be received.

Applying the eight‑fold test and exercising discretion (including proportionality considerations), the Court found the Applicants failed to demonstrate illegality or a material error causing prejudice and concluded against quashing the permissions.

Holding and Implications

DISPOSED OF

Holding: The proceedings are dismissed. The Court ordered (i) dismissal of the judicial review proceedings; (ii) a recital in the order clarifying that Conditions 1 and 3 read with the incorporated documentation require implementation of the mitigation measures submitted with the application, which include the CPPA commitments described in Company A's appeal response; and (iii) the order shall be perfected forthwith with no order as to costs unless parties make consequential applications.

Implications: The direct effect is that the Commission's decisions of 5 April 2024 granting the data centre and substation permissions remain operative. The Court reiterated that s.15 imposes an enforceable but flexible legal standard and that courts will assess compliance by reference to the spectrum-of-possible-outcomes test in Coolglass; however, on these facts the Court found no legal error requiring quashing. The judgment does not purport to establish a new general precedent beyond application of existing authorities (notably Coolglass) to these facts.