Planning Permission for Solar Panels in Ireland - What You Need to Know

The Good News: Exempted Development

If you are considering installing solar panels on your home in Ireland, here is the best news you will hear: the vast majority of domestic solar installations do not require planning permission. Under Irish planning law, solar panels on residential properties fall under "exempted development," which means you can proceed without applying to your local county council.

This exemption was introduced to remove barriers to renewable energy adoption and has been instrumental in the rapid growth of residential solar across Ireland. However, the exemption is not unlimited - there are specific conditions you must adhere to. Exceeding these limits means you will need to go through the full planning permission process, which can add months and significant cost to your project.

Exempted Development Limits

To qualify for exempted development status, your solar installation must comply with the following conditions set out under the Planning and Development Regulations:

• Since October 2022 there is no area limit for rooftop solar on houses, unless your home is in a Solar Safeguarding Zone near an aerodrome (300 square metre cap) or is a protected structure or in an Architectural Conservation Area (this is measured as the total footprint of all panels combined)
• No solar panel should extend more than 50 centimetres above the existing roof surface (measured from the highest point of the roof tiles/slates to the top of the panel)
• The solar panels must be installed on the roof - not on walls, fences, or freestanding structures (ground-mounted solar requires separate planning)
• The installation must be on a house or apartment building - not on a shed, garage, or outbuilding (with limited exceptions)
• Panels should not project beyond the external wall of the building at any point

When You DO Need Planning Permission

There are specific situations where planning permission is required for solar panels in Ireland. It is important to identify these before you commit to an installation:

• Protected structures - If your home is a protected structure or a proposed protected structure, you will need planning permission for any external alteration, including solar panels. This includes Georgian, Victorian, and Edwardian buildings in certain areas.
• Architectural conservation areas (ACAs) - If your property is located within a designated ACA, special rules apply. Some ACAs restrict solar panel installations that are visible from the street.
• Solar Safeguarding Zones - Homes near certain aerodromes fall in a Solar Safeguarding Zone, where a 300 square metre roof cap applies; almost everywhere else there is no area limit since October 2022.
• Flat roof installations - Panels on flat roofs that project above the parapet wall may require planning permission, depending on the height of the parapet.
• Listed buildings - Similar to protected structures, buildings on the National Inventory of Architectural Heritage require planning permission.
• Ground-mounted solar - Free-standing panels in your garden are exempt up to 25 square metres, subject to remaining garden-space conditions; larger ground arrays need planning permission.

Protected Structures and Heritage Homes

If you own a protected structure, you can still install solar panels - but you will need to go through the planning permission process. This involves submitting detailed plans showing how the panels will be installed and demonstrating that they will not materially alter the character of the building.

Tips for protected structure owners include: choosing dark-framed panels that blend with dark roof tiles, positioning panels on rear roof slopes that are not visible from the street, considering in-roof systems where panels replace roof tiles rather than sitting on top of them, and working with an installer experienced in heritage projects.

BER Assessment Exemption

While not directly related to planning permission, it is worth noting that having solar panels does not automatically trigger a BER assessment requirement. However, if you are applying for the SEAI grant, you will need a BER assessment as part of the grant conditions. This is separate from planning permission and is managed through the SEAI portal rather than your local council.

Summary: Do You Need Planning?

The vast majority of Irish homeowners will never need to worry about planning permission for their solar installation. The exempted development rules are generous enough to accommodate most standard residential setups. If you have any doubts, your SEAI-registered installer will be able to advise you during the initial consultation and survey.