1. Introduction
This judgment concerns an unsuccessful judicial review of permission for a solar farm in County Laois. Its principal significance is the distinction between a development’s possible environmental effects and its legal classification under the Environmental Impact Assessment Directive. A project does not become subject to that Directive merely because the planning authority undertakes a precautionary screening exercise.
The applicants, local residents acting without legal representation, challenged permission granted by An Coimisiún Pleanála to Perigus Energy Ireland Midco Limited. The proposed development occupied approximately 249 hectares across five land parcels and had a permitted operational life of 40 years. Their concerns included the conversion of agricultural land, cumulative development, project scale and nearby proposed Natural Heritage Areas.
Humphreys J. dismissed all seven grounds. The central answer was that the solar farm was not a listed EIA project, and precautionary screening could not create obligations that the legislation did not impose. The court nevertheless examined the complaints as possible challenges under ordinary planning and administrative law, finding no established error on that basis either.
The decision primarily applies and consolidates existing authority rather than announcing a new exclusion for solar development. Its particular contribution lies in explaining the consequences of voluntary screening, examining potentially relevant ancillary works, and combining those conclusions with established rules on pleadings, evidence, reasons and discretionary relief.
2. Background and Outcome
The planning process
The developer applied to Laois County Council in March 2025. Following objections and a request for further information, the council granted permission subject to conditions. The additional information covered matters including field patterns, glint and glare, landscape effects and cumulative impacts.
The applicants appealed. After a site inspection and an inspector’s recommendation, the Commission granted permission on 16 February 2026, subject to 14 conditions. These included:
- a 40-year operational limit, followed by decommissioning and restoration unless further permission was obtained;
- implementation of ecological and other environmental mitigation;
- retention and supplementation of existing field boundaries, subject to specified access requirements;
- restrictions on lighting, camera orientation and foundation types; and
- financial security for reinstatement.
The Commission also completed a separate appropriate assessment concerning the River Barrow and River Nore Special Area of Conservation. It concluded that the development would not adversely affect that European site’s integrity. That Habitats Directive exercise was distinct from the EIA complaints litigated in these proceedings.
The proceedings and final order
Judicial review proceedings commenced on 13 April 2026. Six grounds were initially advanced, with a seventh concerning proposed Natural Heritage Areas subsequently admitted provisionally. The substantive hearing took place on 2 September 2026.
The court’s principal conclusions were:
- The pleadings lacked the clarity and particularisation required, especially for complex EU law arguments.
- All seven grounds depended, expressly or implicitly, on an incorrect EIA premise.
- The applicants had not established the alleged factual or evaluative defects.
- The Commission had provided the main reasons on the main issues.
- Relief would, in any event, have been refused in the exercise of judicial discretion.
The proceedings were dismissed. The proposed costs disposition was no order as to costs, subject to further submissions and any consequential application. It should therefore not be described as an unconditional, finally settled costs determination.
3. The Statutory Gateway: Classification Before Screening
The decisive reasoning separates three questions:
- Classification: Does the development fall within a project category covered by the EIA legislation?
- Screening: Where screening is legally required, is the project likely to have significant environmental effects?
- Assessment: If EIA is required, does the environmental assessment satisfy the applicable requirements?
The applicants’ case concentrated on the second question without establishing the first. Annex III criteria, reflected in Schedule 7 of the Planning and Development Regulations 2001, do not independently extend the Directive to projects outside its listed categories.
Accordingly, even significant environmental effects would not, by themselves, bring an otherwise unlisted project within the Directive. That proposition does not mean that such effects are irrelevant to planning permission, ecological protection or other environmental legislation. It means that those matters cannot supply the missing legislative gateway to this particular assessment regime.
Why precautionary screening did not change the position
The applicants relied on the Commission’s use of screening forms and Schedule 7 criteria across the development as a whole. They argued that, once a full screening exercise had been undertaken, the legal standards governing mandatory screening applied in full.
The court rejected that argument. The scope of EU legislation is determined by law, not by an administrative authority’s choice to undertake additional assessment. The breadth of the screening exercise therefore did not transform the solar farm into an Annex I or Annex II project.
The holding is narrower than a general immunity for voluntary administrative assessments. The court still examined whether the same complaints disclosed ordinary planning-law errors. What failed was the attempt to derive otherwise inapplicable EIA obligations from the mere fact that screening had occurred.
4. Precedents Cited and Their Influence
A. The established position on solar farms
The central appellate authority was Concerned Residents of Treascon and Clondoolusk v. An Bord Pleanála [2024] IESC 28. The judgment relied on it for the proposition that the EIA Directive does not apply to projects outside its listed categories. This supplied the legal foundation for rejecting the applicants’ attempt to treat environmental significance as a substitute for project classification.
The court situated that conclusion within a consistent line of solar-farm decisions:
- Breen v. An Coimisiún Pleanála [2026] IEHC 338;
- Moss v. An Coimisiún Pleanála [2026] IEHC 62 and [2026] IEHC 175;
- Cummins v. An Coimisiún Pleanála [2025] IEHC 521 and [2025] IEHC 662;
- Kavanagh v. An Bord Pleanála [2020] IEHC 259; and
- Sweetman v. An Bord Pleanála [2020] IEHC 39.
Duffy v. An Coimisiún Pleanála [2026] IEHC 322 and Reid v. An Bord Pleanála (No. 7) [2024] IEHC 27 were also cited on the need for a project to fall within the Directive’s lists. Together, these authorities explain why the court regarded the applicants’ foundational proposition as settled rather than an unresolved question.
The refusal of leave to appeal in Moss v. An Coimisiún Pleanála [2026] IESCDET 91 reinforced that context. The judgment appropriately identified its status as a determination: refusal of leave is not equivalent to a substantive appellate judgment deciding every underlying issue.
B. Additional assessment cannot create an otherwise absent legal duty
Carvill v. Dublin City Council [2025] IECA 84, particularly paragraph 259, supplied the closest analogy. The court used it to explain why undertaking an assessment unnecessarily does not make the underlying statutory regime applicable. An alleged deficiency in an exercise that was not legally required does not, simply by being identified, establish invalidity under that regime.
Ryan v. An Bord Pleanála [2025] IEHC 111, paragraph 214, supported the related remedial conclusion. Quashing permission as though a non-EIA development were an EIA project would serve no useful substantive, environmental or legal purpose where the supposed obligations did not apply. The court endorsed that reasoning when considering discretion.
C. Potentially relevant ancillary works remain important
The court did not treat the description “solar farm” as conclusive for every component of the development. It considered whether access tracks or changes to rural land structure could independently engage listed categories.
The discussion of Moss v. An Coimisiún Pleanala [2026] IESCDET 91 supported the distinction between rudimentary internal tracks and works shown to constitute road projects. Doyle v. An Coimisiún Pleanala [2026] IESCDET 102 was cited in the broader survey for the fact-sensitive character of an “urban development” classification and the applicant’s corresponding evidential burden.
The practical lesson is that classification remains sensitive to the actual works. The decision does not establish that every development incorporating solar panels, roads or rural works must fall outside EIA.
D. Why the applicants’ EU authorities did not overcome the gateway problem
The applicants relied on Paul Abraham and Ors v. Région wallonne and Ors, C-2/07, ECLI:EU:C:2008:133. The court distinguished it because it concerned airport construction or improvement, a listed EIA project. Its treatment of future operational effects could not establish that an unlisted solar farm was subject to the Directive.
The court similarly distinguished:
- Kraaijeveld and Others v. Gedeputeerde Staten Van Zuid-Holland, C-72/95, ECLI:EU:C:1996:404, concerning works within the relevant Annex II category; and
- R. (Wells) v. Secretary of State for Transport, Local Government and the Regions, C-201/02, ECLI:EU:C:2004:12, which likewise concerned a listed category.
These decisions address obligations within the Directive’s scope; they do not eliminate the need to establish that scope first.
The general legal survey also cited Brussels Hoofdstedelijk Gewest and Others v Vlaamse Gewest, C-275/09, and Pro-Braine ASBL and Others v Commune de Braine-le-Château, intervener: Veolia es treatment SA, ECLI:EU:C:2012:225, on the requirement for physical intervention rather than a mere change of use. Those authorities reinforce the importance of identifying the relevant works, although the decisive obstacle here remained the absence of a listed project.
Asociación Petón do Lobo, C-461/24, ECLI:EU:C:2025:620, appeared in the court’s survey concerning concurrent consultation of authorities and the public. It was not a material basis for disposing of any of the seven grounds.
5. Legal Reasoning on the Seven Grounds
Each ground failed on the common EIA classification point. The court’s alternative analysis is nevertheless important because it shows that the outcome did not depend solely on how the grounds were labelled.
Ground 1: Existing agricultural use
The applicants argued that the Commission had not adequately assessed the conversion of agricultural land and had relied excessively on describing the development as temporary.
The court found that the existing use had, in fact, been considered. The assessment recognised agricultural productivity, potential continued grazing, the development’s limited duration and the possibility of restoration. The applicants’ concentration on an isolated expression did not demonstrate that the underlying issue had been omitted.
The judgment also examined the ancillary works. The internal tracks had not been shown to constitute road projects. Nor did the works amount to rural land restructuring on the facts established.
Approximately 75 metres of hedgerow would be removed for access. Humphreys J. distinguished that limited intervention from changes altering field or land-parcel structure. Removing a boundary to amalgamate fields, or creating a boundary to subdivide them, inherently changes configuration. Partial hedgerow removal does not necessarily do so: its purpose, extent and structural consequences matter.
No sufficient restructuring had been established, and the applicants had not pleaded that the limited hedge removal independently triggered EIA. Importantly, the conclusion was not simply that ancillary works fell below a numerical threshold; the court examined whether qualifying works existed at all.
Ground 2: Proposed sheep grazing
The applicants contended that continued sheep grazing was an unenforceable aspiration rather than an established operational characteristic. No separate condition required grazing.
The court held that a planning authority may consider an inherently lawful proposed use when assessing a development. Prediction is necessarily uncertain, but uncertainty does not automatically make a proposal speculative or legally unusable. The inspector had accurately recorded what was proposed.
This should not be read as dispensing with enforceable safeguards wherever legislation requires mitigation to be secured. The court decided that, in this non-EIA case, the absence of a specific grazing condition did not establish the alleged error.
Ground 3: A 40-year development described as temporary
The court rejected the proposition that a development lasting several decades could not rationally be characterised as temporary. The relevant considerations included its legally defined operational period, reversibility, decommissioning requirements and restoration obligations.
Condition 3 required removal and restoration after the permitted operational life unless further permission was granted. No basis had been established for questioning that condition’s validity or enforceability. The court referred to Boland v. An Bord Pleanála [2006] IEHC 102 in discussing the power to impose conditions.
The applicants’ reliance on Annex IV was also misplaced: that Annex concerns the contents of an environmental impact assessment report where EIA applies. It did not establish an obligation to prepare such a report here.
The narrower principle is that long duration does not necessarily mean permanence. The decision does not establish that temporary environmental effects are insignificant or exempt from assessment under an applicable statutory regime.
Ground 4: The development plan’s siting preference
Policy DM RE 1 of the Laois County Development Plan 2021–2027 expressed a preference for brownfield or non-productive agricultural sites. The applicants sought to connect that policy with the EIA criterion concerning existing and approved land use.
The court found that the development plan had been expressly considered. Moreover, the pleaded complaint was not a properly articulated allegation of contravention.
Even if contravention had been pleaded, the policy’s expression of a “preference” left appreciable evaluative discretion. Applying Re XJS Investments Limited [1986] I.R. 750, the court considered acceptance of the agricultural location to fall within the range of lawful planning judgment.
Coolglass Wind Farm Ltd v. An Coimisiún Pleanála [2026] IESC 5 informed an additional observation that hypothetical policies sterilising substantial areas against renewable development could impede climate-consistent decision-making. That observation was not a ruling that all renewable-energy proposals override development plans: no such restrictive policy arose here.
Ground 5: Cumulative effects
The applicants argued that cumulative effects had been dismissed without sufficient analysis, particularly given other renewable developments in the wider area.
The court found that cumulative effects had expressly been considered. It also rejected the allegation that adequate reasons were missing. The applicants had not demonstrated a legally defective assessment rather than disagreement with its conclusion.
The judgment does not establish that non-EIA projects can always be excluded from cumulative assessment when another project is subject to EIA. Its narrower conclusion was that no mandatory EIA obligation arose for this development and that the alleged omission was not substantiated on the planning record.
Ground 6: Project size
The applicants argued that describing the solar farm as “extensive” was not an assessment of the effects of its scale.
The court found that the project’s size had been expressly identified and considered. An applicant cannot dictate the terminology or structure used by the decision-maker. The relevant question is whether a legally required consideration was addressed, not whether the reasons were organised in the objector’s preferred form.
Ground 7: Proposed Natural Heritage Areas
The seventh ground concerned Derries Wood, The Great Heath of Portlaoise and Emo Court. The applicants emphasised their omission from a particular screening-form response, while expressly presenting the complaint as procedural rather than an assertion of actual significant harm.
The court assessed the wider record:
- Derries Wood had been considered in the developer’s ecological impact assessment, which the Commission implicitly adopted.
- The Great Heath of Portlaoise had been assessed as outside the development’s zone of influence.
- Emo Court had likewise been assessed as outside that zone.
The applicants had not evidentially displaced those conclusions. The court treated their failure to challenge the relevant affidavit evidence through cross-examination as fatal to the factual dispute they sought to advance.
The court did not finally determine whether the amendment introducing this ground should be allowed. It considered the absence of any explanation for the delayed pleading problematic, but expressly declined to rest the decision on that procedural objection.
Nor did failure to advance the precise EIA theory during the planning process automatically bar the argument. The court held that it could only be assessed against the material actually before the Commission, with the earlier omission potentially relevant to discretion.
6. Judicial Review Controls: Pleadings, Evidence and Reasons
Legality is not a fresh planning appeal
Amariei v. Chief Appeals Officer [2026] IESC 22 supplied a central statement that judicial review concerns legality rather than merits. The court also cited the State (Keegan) v. Stardust Compensation Tribunal [1986] I.R. 642, Meadows v. Minister for Justice, Equality and Law Reform [2010] IESC 3 and Sweeney v. Fahy [2014] IESC 50.
For evaluative planning judgments, Sherwin v. An Bord Pleanála [2024] IESC 13 and Baby O. v. Minister for Justice [2002] IESC 44 supported review on an irrationality standard where no separate procedural, legal or factual defect is established. The High Court therefore did not ask whether it preferred the applicants’ planning assessment, but whether the Commission had acted unlawfully.
Pleadings must identify the route to relief
The court applied Order 84 rule 20(3), Order 103 rule 14(3) and Practice Direction HC 137. The pleadings needed to connect each complaint to an applicable legal obligation and then explain why its breach justified relief.
A.P. v. Director of Public Prosecutions [2011] IESC 2, Khashaba v. Medical Council [2016] IESC 10 and Casey v. Minister for Housing, Planning and Local Government & Ors. [2021] IESC 42 supported the rule that applicants are confined to their pleaded grounds. Concerned Residents of Treascon and Clondoolusk v. An Bord Pleanála [2024] IESC 28 reinforced the need for particular clarity in complex EU law arguments.
The court considered that the applicants’ grounds lacked that clarity and could not subsequently be reconstructed as independent domestic-law claims. Affidavits could not cure missing grounds. Kennedy v. An Bord Pleanála [2024] IEHC 570 and Pierse v. An Bord Pleanála [2018] IEHC 669 also supported distinguishing evidence from legal argument or commentary placed in affidavits.
The evidential burden
An Taisce v. An Bord Pleanála & Ors. [2022] IESC 8 supported the general proposition that an applicant challenging an environmental assessment must establish the alleged defect. Amariei v. Chief Appeals Officer and O'Doherty and Waters v. Minister for Health [2022] IESC 32 similarly underpinned the obligation to prove facts necessary for relief.
RAS Medical Ltd v. Royal College of Surgeons in Ireland [2019] IESC 4 was particularly important to Ground 7. Where admissible evidence conflicts and the conflict is not tested by cross-examination, it will generally be resolved against the party carrying the burden of proof.
This does not establish a universal requirement that environmental applicants retain experts. A pure legal error may be demonstrable without expert evidence. Here, however, submissions and non-expert assertions did not displace the technical ecological conclusions relied upon by the Commission.
What adequate reasons require
The court drew on Oguekwe v. Minister for Justice, Equality and Law Reform [2008] IESC 25 and Rawson v. Minister for Defence [2012] IESC 26 to distinguish adequate reasons from a discursive response to every submission.
Connelly v. An Bord Pleanála [2018] IESC 31, O'Keefe v. An Bord Pleanála [1993] 1 I.R. 39 and Faulkner v. Minister for Industry and Commerce supported the formulation “main reasons on the main issues”. Although the judgment distinguished reliance on EIA-specific aspects of Connelly v. An Bord Pleanála, it continued to apply that decision’s general principles on reasons.
Sherwin v. An Bord Pleanála, Killegland Estates Ltd v Meath County Council [2023] IESC 39 and Lanigan v Barry [2016] IESC 46 supported reading the decision with the inspector’s report and relevant underlying documentation. This was central to the ecological ground: absence from one form did not establish absence from the assessment as a whole.
Finally, G.K. v. Minister for Justice, Equality and Law Reform [2002] 2 I.R. 418 and Rana v. Minister for Justice [2024] IESC 46 supported a rebuttable presumption that material has been considered where the decision-maker says it has. The court referred to Rural Residents Wind Aware and Environmental Group v. An Coimisiún Pleanala [2026] IESCDET 113 as recognising several such principles as well-established, while identifying its determination context.
7. Discretion: An Independent Alternative Basis for Refusing Relief
The court held that even if a breach had been established, relief would have been refused. This was an alternative conclusion, not a finding that an identified unlawful assessment had occurred but could simply be overlooked.
Discretion is legally constrained
G. v. DPP [1994] 1 I.R. 374 and De Róiste v. Minister for Defence [2001] IESC 4 established the discretionary character of judicial review at both leave and substantive stages.
However, Amariei v. Chief Appeals Officer, Kelly v. Minister for Agriculture [2021] IESC 62 and Christian v. Dublin City Council [2012] IEHC 163 make clear that discretion is not an unrestricted licence to decide according to the court’s view of a project’s merits. Refusing otherwise justified relief must rest on sufficiently weighty legal or constitutional considerations.
Pat O'Donnell & Co. v. Dublin City Council [2026] IESC 36 provided an important framework. The court must first respect any legislative intention that non-compliance produce invalidity. Where invalidity is not mandated, relevant considerations include substantial compliance, the seriousness of the breach, prejudice and countervailing public interests. Its discussion arose in the context of statutory time limits; the present judgment used the principles to structure its wider remedial analysis.
The relevant categories
Drawing particularly on O'Connell v. Behan [2021] IECA 186, the judgment organised discretionary considerations around applicant conduct, the practical value of relief and proportionality.
- Conduct and alternative remedies: S. v. Minister for Justice and Equality [2025] IESC 48 and A.B. v Chief International Protection Officer & Ors [2026] IESC 23 illustrated the general importance of exhausting remedies and the possibility of exceptions. Friends of the Irish Environment CLG v. Government of Ireland [2021] IECA 317 supported considering whether a point had been raised during the administrative process.
- Practical utility: Independent Newspapers (Ireland) Ltd v. IA [2020] IECA 19 and Protect East Meath v. Meath County Council [2026] IESC 12 supported refusing futile or inappropriate relief.
- Proportionality and prejudice: Save Cork City Community Association CLG v. An Bord Pleanála [2022] IESC 52, Monaghan Urban District Council v. Alf-a-Bet Promotions Ltd [1980] ILRM 64 and Gillen v. Commissioner of An Garda Síochána [2012] 1 IR 574 informed consideration of technical breaches, substantial compliance and actual prejudice.
Ballyboden Tidy Towns Group v. An Bord Pleanála [2024] IESC 4 supported the court’s ability to consider discretion of its own motion. The judgment also cited Byrnes v. Dublin City Council [2017] IEHC 19, Pembroke Road Association v. An Bord Pleanála [2021] IEHC 403 and Reilly v. An Coimisiún Pleanála [2025] IEHC 659 against treating every alleged jurisdictional defect as producing automatic nullity.
The discussion of harmless error referred to Gemeinde Altrip and Others v Land Rheinland-Pfalz, C-72/12, ECLI:EU:C:2013:712. References to Carrownagowan Concern Group v. An Bord Pleanála [2025] IESCDET 9 and Massey v. An Bord Pleanála [2025] IESCDET 126 were expressly recognised as non-precedential determination references rather than substantive holdings.
Application to this permission
The court emphasised the absence of demonstrated tangible environmental harm, the expert material supporting the permission, the development’s contribution to legally recognised renewable-energy and climate objectives, and the lack of useful purpose in remitting a non-EIA project for compliance with obligations that did not apply.
These considerations do not create a general renewable-energy exemption from judicial review. The judgment itself stresses the need to observe statutory requirements. Its discretionary conclusion depended on the particular defects alleged, their lack of demonstrated consequences and the legal value of the permission in context.
8. CJEU Referral and Procedural Observations
No unresolved EU question requiring referral
No party sought a reference under Article 267 TFEU. The court nevertheless considered the issue and found no properly pleaded, evidentially grounded EU question raising real doubt.
It cited Consorzio Italian Management and Catania Multiservizi SpA v Rete Ferroviaria Italiana SpA, C-561/19, ECLI:EU:C:2021:799, concerning the exceptions associated with clear or already settled EU law. The conclusion was that no reference was warranted, not that the High Court was automatically subject to the same reference obligation as a court of final instance.
Draft judgments
The judgment also contains detailed directions under Practice Direction HC 137 on confidential circulation of draft judgments. Parties were required to identify errors and ambiguities promptly; circulation was not an invitation to reopen the merits.
O'Sullivan v. Health Service Executive [2023] IESC 11 and O'Sullivan v. Sea Fisheries Protection Authority [2017] IESC 75 supported proportionate procedural fairness rather than an entitlement to elaborate procedures at every stage.
The confidentiality discussion cited Attorney General v. Crosland (No. 2) [2021] UKSC 58, Baigent v. Random House Group Ltd [2006] EWHC 1131 (Ch), R. (Counsel General for Wales) v. Secretary of State for Business, Energy and Industrial Strategy [2022] EWCA Civ 181, Public Institution for Social Security v. Banque Pictet & Cie SA and others [2022] EWCA Civ 368 and Itkin v. Wood [2023] JRC 101. These authorities concerned administration of justice and draft handling, not the substantive validity of the solar-farm permission.
9. Likely Impact and Limits
Environmental litigation
Future challengers must establish the legal gateway before contesting screening detail. A large site, sensitive surroundings or cumulative development cannot alone substitute for identifying a listed project category. Where ancillary works are relied upon, their physical characteristics and legal classification must be pleaded and evidenced.
The judgment also encourages separation of EIA claims from domestic planning claims. A complaint about a development plan, reasons or ecological consideration should not be left dependent on an EIA premise if it is intended to stand independently.
Planning practice
Authorities can undertake precautionary environmental examination without thereby expanding the Directive’s legal scope. Nevertheless, clear records distinguishing mandatory assessment from precautionary review remain valuable: much of this litigation concerned the significance of the forms and language used.
The decision also confirms that reasons are assessed across the relevant record, not by isolating one screening answer. That approach requires an identifiable rationale in the material relied upon; it is not permission to replace reasons with an undifferentiated collection of documents.
Long-term renewable development
A defined, reversible 40-year use may lawfully be described as temporary. Development-plan preferences may also permit substantial evaluative judgment. Neither proposition means that duration is environmentally irrelevant or that renewable projects automatically prevail over binding planning restrictions.
Most importantly, exclusion from EIA is not exclusion from environmental law. Appropriate assessment, species protection, water protection, planning policy and enforceable conditions remain separate questions governed by their own legal requirements.
10. Complex Concepts Simplified
- EIA screening
- The preliminary decision whether a project covered by the relevant regime requires a full environmental impact assessment.
- Precautionary screening
- An additional screening exercise undertaken cautiously, without necessarily accepting that legislation requires it. Its performance does not itself create statutory coverage.
- Annex III and Annex IV
- Annex III provides screening criteria. Annex IV concerns information for an environmental impact assessment report. Neither independently brings an unlisted project within the Directive.
- Appropriate assessment
- A separate Habitats Directive process examining implications for protected European sites. A project outside EIA may still require it.
- Zone of influence
- The area within which a project could realistically affect ecological receptors, considering a source of impact and a pathway connecting it to the receptor—not distance alone.
- Certiorari
- An order quashing an administrative decision. Even an established error does not invariably make that remedy automatic.
- De bene esse
- Provisionally or conditionally. The seventh ground was admitted subject to later objection, not finally approved at the amendment stage.
- Nihil ad rem
- Irrelevant to the particular legal question. Alleged environmental effects could not establish EIA coverage without a listed project.
- Acte clair and acte éclairé
- EU law that is sufficiently clear, or already authoritatively explained, so that a further CJEU reference is unnecessary under the applicable rules.
11. Conclusion
The central lesson is that precautionary assessment does not create an otherwise absent EIA obligation. The court also found that the Commission had considered the relevant planning and ecological matters, provided adequate reasons and committed no demonstrated reviewable error.
The judgment strengthens the distinction between environmental concern and a legally established ground for quashing permission. Its significance lies in disciplined classification, precise pleadings, evidence-based challenge and proportionate remedies—not in insulating solar development from environmental scrutiny.