Rural Residents Wind Aware and Environmental Group and Ors v An Coimisiun Pleanala and Ors [I] [No. 2] (Approved)

Factual and Procedural Background

The Plaintiffs challenged a planning permission granted on 21 November 2023 by the Defendant (the planning commission) for a 7-turbine windfarm and associated works in a group of townlands located across two counties. The application for Strategic Infrastructure Development was made by Company A and was accompanied by an EIAR and NIS. The Defendant sought further information from Company A; no oral hearing was held. A planning inspector reported recommending permission and the Defendant granted permission subject to conditions. The Plaintiffs issued two sets of proceedings: one challenging the parent permission (the present proceedings) and a second challenging an amendment to the permission. The proceedings were modularised. Module I was heard in September–October 2025 (judgment issued 6 November 2025) and Module II was heard on 12 February 2026. A draft judgment was circulated to the parties on 17 February 2026. The present judgment (delivered by Judge Humphreys on 6 March 2026) resolves the remaining Module II issues.

Legal Issues Presented

1. Whether the impugned decision was invalid because the application wrongly implied landowner consent for parts of the site (core ground 1).
2. Whether Article 214(1) of the Planning and Development Regulations 2001 is invalid for omitting an express requirement that an SID applicant provide written landowner consent (core ground 8A).
3. Whether any identified procedural or legal errors were material (i.e. not harmless) such as to warrant certiorari rather than being addressed by amendment or discretion.

Arguments of the Parties

Plaintiffs' Arguments

• The application implied letters of landowner consent had been supplied when they had not, rendering the application invalid and the Defendant's decision contrary to fair procedures and section 37E(2).
• Article 214(1) is invalid because it does not require written landowner consent for SID applications, contrary to the property interest test derived from precedent.
• The EIAR and related publicity failed in ways alleged (EIA Directive and related grounds were pleaded in the proceedings).

Defendant's and State Respondents' Arguments

• The original consent problem, insofar as it existed, has been rectified by a lawful amendment to the permission; any historical defect is now harmless and does not sustain certiorari.
• Article 214(1) benefits from a presumption of validity; the statutory scheme and constitutional obligations should be read to avoid invalidity and do not require the specific textual insertion alleged by the Plaintiffs.
• Any constitutional or regulatory challenge to Article 214(1) is moot or lacks sufficient interest given the amendment and remedial steps taken.

Company A (Notice Party) Arguments

• No express statutory requirement for landowner consent for SID applications exists; Company A acted in good faith and believed it had consent.
• The consent issue is moot because turbines alleged to be on the Plaintiffs' land were moved by the amendment.
• Any challenge should be resolved on discretionary grounds and not by quashing the permission where the practical problem has been remedied.

Table of Precedents Cited

Court's Reasoning and Analysis

The court proceeded by reference to established principles governing judicial review in the planning and environmental context. It framed a cumulative eight-fold test for relief (jurisdictional requirements, legal correctness, pleading specificity, issue-specific standing, materiality of material before decision-maker, onus of proof, transcendence of harmless error, and discretion). The court emphasised that judicial review addresses legality not merits and that evaluative planning judgments attract deference unless irrational.

Applying those principles the court accepted that there was an initial error in the parent permission because elements of the proposed development implicitly relied on landowner consent that had not been given. However, that error was subsequently rectified by a lawful amendment (the s.146B amendment). The court held that once the substantive defect had been corrected, the original problem became historical, technical and de minimis. Under the harmless-error doctrine (including the guidance derived from Altrip and subsequent authorities), the court may, and should, assess whether an identified procedural or EU-law error could reasonably have affected the outcome. The court concluded that the Plaintiffs failed to identify a continuing material injury or live controversy: the remediation removed any real-world prejudice and therefore standing to obtain certiorari on that ground.

On the challenge to Article 214(1), the Plaintiffs withdrew that ground at hearing; the court additionally held that the argument lacked foundation because legislation is not invalid merely because it does not expressly restate constitutional limits and because the statutory scheme and principles of interpretation support reading Article 214(1) in a constitutionally compatible way. The court also accepted that, even if an error had existed, discretion weighed strongly against quashing a permission where the defect had been promptly corrected and where no ongoing prejudice existed.

The court therefore resolved the remaining Module II issues by applying (i) standing and materiality principles, (ii) harmless-error doctrine permitting reliance on the totality of the case-file and post-decision rectification, and (iii) exercise of judicial discretion to decline certiorari where disproportionate in the circumstances.

Holding and Implications

HOLDING: The proceedings are DISMISSED.

Implications: The court dismissed the remaining grounds. The practical consequence is that the planning permission (as amended) stands and no certiorari is granted. The court emphasised that rectification of an original procedural defect can render a challenge moot or technical such that relief is inappropriate; no new precedent was established beyond application of existing principles (standing, harmless-error doctrine, deference to evaluative planning judgments, and the discretionary nature of certiorari). The order contemplated no general award of costs unless parties apply as directed within the timetable set out by the court.