Summary of Judgment

Factual and Procedural Background

The Applicants challenged the grant of permission for an onshore renewable energy (wind farm) project under section 50, 50A and 50B of the Planning and Development Act 2000 (as amended). An inspector and the statutory planning authority approved the project. The Applicants brought judicial review proceedings. In the substantive judgment the High Court dismissed the Applicants' claim for certiorari and granted limited declaratory relief on one core ground. The Applicants sought a certificate for leave to appeal to the Supreme Court against that substantive judgment. The application for certificate progressed by written submissions and a hearing before Judge Humphreys. A draft of the present judgment was circulated to parties for comment prior to finalisation.

Legal Issues Presented

1. Whether the design flexibility allowed in the permission (variations in total height, hub height and blade diameter across turbines) is consistent with Articles 17, 18, 19, 22 and 23 of the Planning and Development Regulations 2001, and whether departures from those provisions go to jurisdiction or may be treated as de minimis.
2. Where there is alleged non-compliance with Articles 17, 18, 19, 22 and 23, whether the burden lies on an applicant to adduce evidence of a planning issue, or whether the person seeking to be excused from strict compliance must prove absence of planning impact.
3. Whether assertions that multiplicity of design options made it impossible to assess effects (landscape/visual amenity, noise, shadow flicker, avian impacts, residential amenity) amount to "evidence" of a genuine planning issue for the purposes of paragraph 57.12.i of the substantive judgment.

Arguments of the Parties

Applicants' Arguments

• The Applicants contended that the permission impermissibly allowed design flexibility (multiple, variable heights and blade diameters) contrary to the Planning and Development Regulations 2001.
• The Applicants argued that any such non-compliance should be treated as jurisdictional and that flexibility could not be excused as de minimis.
• The Applicants asserted that the multiplicity of options meant that evidence of potential planning impacts could not be properly made or assessed.

Defendant's Arguments

• The Defendant submitted that the Applicants misread the substantive judgment and that there was no demonstrable non-compliance with the Regulations as a factual matter.
• The Defendant relied on the principle that reasonable design flexibility that does not give rise to a planning issue is permissible and that the Applicants had not proved otherwise.
• The Defendant submitted that the proposed points did not properly arise, were not points of law of public importance and were not suitable for certification.

Notice Party (Company A) Arguments

• Company A submitted that the Applicants' certificate application was premised on a misreading of the substantive judgment and should be refused without further consideration.
• Company A emphasised the public interest in timely completion of renewable energy infrastructure and the prejudice of further delay to the developer.
• Company A pointed to statutory and legislative developments addressing design flexibility and submitted any appellate decision about pre-amendment flexibility would have limited future relevance.

Table of Precedents Cited

Court's Reasoning and Analysis

Judge Humphreys analysed the certificate application against the statutory criteria for leave to appeal. The Court applied the familiar cumulative tests: (i) the points must properly arise (fall within the pleadings and have been argued at trial); (ii) they must be points of law (not purely factual or mixed fact-law questions); (iii) they must be of exceptional public importance; and (iv) an appeal must be in the public interest. The Court concluded:

• The Applicants' proposed questions were premised on a misreading of the substantive judgment and an incorrect factual premise of regulatory non-compliance.
• The first and third proposed questions were applications of law to facts (mixed questions) rather than pure points of law; the second question, even if viewed as legal, was disconnected from the principal judgment because there was no proven non-compliance.
• The questions were fact-specific, would not resolve general doubt, and thus were not of public importance or of exceptional public importance.
• The Applicants had not engaged with the rationale of the High Court judgment or shown a plausible basis for contending it was wrong; many of the arguments and authorities now advanced were not relied upon at trial and appeared to be manufactured for appeal.
• Countervailing public interest considerations—particularly the public interest in timely delivery of renewable energy infrastructure and the prejudice of further delay to the developer—strongly weighed against certification.
• The Court emphasised precedent supporting a workable interpretation of planning regulations permitting reasonable design flexibility where no planning issue arises, and noted legislative amendments addressing design flexibility.

Holding and Implications

Holding: The application for leave to appeal (certificate) was refused and the application for leave to appeal was dismissed.

Implications:

• The High Court concluded there was no basis to certify questions of law of exceptional public importance arising from the substantive judgment.
• The direct effect is that the substantive High Court judgment stands and no appeal will proceed (subject to any leapfrog application to the Supreme Court). The Court ordered dismissal of the certificate application and specified costs provisions depending on any subsequent leapfrog application.
• The decision reinforces that reasonable design flexibility, where it does not create a planning issue, is permissible under existing jurisprudence, and that speculative or newly-formulated points not raised at trial are unlikely to be certified for appeal.

Order

• The application for leave to appeal is dismissed.
• If a leapfrog application to the Supreme Court is made and acceded to, costs of the leave application are costs in that appeal; otherwise there is no order as to costs of the leave application.
• If a leapfrog application is made within 28 days, there is a stay on execution of costs already ordered until final determination.
• The order and the earlier substantive order are to be perfected forthwith as the final orders of the High Court.