RED III and what it means for renewable energy developers

Ireland’s renewable energy sector has never been better positioned, or more tightly regulated. The transposition of RED III (Directive EU/2023/2413) into Irish law through SI 274/2025 represents the most significant structural change to the Irish planning system for renewables in a generation, writes Oisín Doherty, Associate Director and Environmental Lead, ORS.

For developers in the wind, biomethane, solar PV, and BESS sectors, understanding what the new framework demands in practice is the difference between a project that advances confidently and one that stalls at the first procedural hurdle.

What RED III requires in practice

The new regime introduces four procedural requirements that every developer must plan for before lodging an application:

RED III procedural checklist

1. Mandatory EIA scoping: Projects requiring an EIAR must now submit a formal scoping request to the Planning Authority before lodgement. The scoping opinion shapes the EIAR and marks the start of the competent authority’s engagement, treating it as a box-ticking exercise produces weaker EIARs and slower decisions.
2. Completeness check: Under SI 274/2025, ACP carries out a formal completeness check on receipt. Incomplete applications are rejected, not held pending Further Information, and the statutory clock does not start until a valid application is accepted. Getting this wrong costs months, not days.
3. Site notices and public participation: RED III reinforces existing public participation requirements. Site and newspaper notices must be in place before or at lodgement. Notice defects are grounds for invalidity and, unlike minor omissions in supporting documents, cannot be remedied by further information.
4. Statutory timelines: Once a valid application is accepted, the determination clock begins, though the timeline depends on the route. Most renewable energy applications continue to go to the relevant local authority, with an eight-week statutory period (extended for further information or re-advertisement). Applications made directly to An Coimisiún Pleanála under the Planning and Development Act 2024 (typically SID or chapter four developments) are subject to mandatory timelines of 18 weeks (standard), 26 weeks (EIA/AA), or up to 48 weeks (large-scale SID). Sitting above both, the RED III maximums transposed via SI 274/2025 cap the overall permit-granting process at two years for new EIA projects and one year for repowering. These are statutory ceilings, not targets, and the clock only runs from the date of a valid, complete application.

A note on practical timelines: the statutory periods cover the formal determination clock only. Pre-application consultation, scoping, validation, Further Information cycles, and any oral hearing typically push the full lifecycle well beyond the statutory window. Programming should reflect the practical timeline, not the statutory one.

Sector-specific considerations

Biomethane projects are among the most regulatorily complex in the Irish renewables pipeline. An AD facility is not simply a planning application; it is simultaneously a waste licence or industrial emissions licence application to the EPA, an animal by-products facility subject to Department of Agriculture approval, and a development with direct Water Framework Directive implications for receiving waterbodies. Each regulatory stream has its own timeline, its own prescribed body engagement, and conditions that can interact in commercially significant ways. Getting the sequencing right from the outset, with all regulatory workstreams running in parallel, is where ORS adds most value.

For solar PV, the planning pipeline is mature but the environmental bar is rising. Appropriate Assessment under the Habitats Directive is often the most consequential regulatory hurdle for sites anywhere near a European designated area, and ‘near’ in hydrology terms can mean several kilometres from an SAC or SPA.

Where significant effects on a Natura 2000 site cannot be excluded, consent cannot issue. The ORS ecology team engages at site selection stage to identify AA risk early, design mitigation into the project layout, and produce Natura Impact Statements that withstand scrutiny not just from the competent authority, but from prescribed bodies including the National Parks and Wildlife Service.

For BESS, the planning system is still developing its approach and competent authorities – whether local authorities or An Coimisiún Pleanála for larger SID projects, are applying increasing scrutiny to fire safety strategy, chemical and thermal hazard assessment, and the grid integration rationale for proposed locations. Applications that do not address these issues comprehensively from the outset attract requests for further information that break the RED III statutory timeline.

JSA Planning brings a proven track record in securing permission for large-scale BESS and energy infrastructure projects across both local authority and strategic infrastructure development routes, and works closely with the ORS team to ensure that environmental, fire safety, and engineering inputs are coordinated into a single coherent application package.

ORS brings a genuinely multidisciplinary capability to renewable energy development spanning environmental consultancy, ecology, civil and structural engineering, infrastructure, project management, mechanical and electrical engineering, sustainability, building surveying, assigned certifier, health and safety management, and fire safety. Working in association with JSA Planning across planning applications, SID submissions, appeals, and stakeholder engagement, ORS and JSA together provide developers in the biomethane, solar, and BESS sectors with the fully integrated expertise the new regulatory landscape demands from site feasibility through to construction and operational compliance.

To discuss your renewable energy project, contact ORS or JSA Planning:

ORS
T: +353 1524 2060
E: info@ors.ie
JSA Planning
T: +353 1 662 5803
E: info@jsaplanning.ie