Homeowner guide
Solar panels on your house: planning rules, the grant and the 0% VAT
Updated 2026-07-18 · checked against the sources below
Rooftop solar on a house is one of the most generously exempted works in Irish planning: since the 2022 reform (S.I. 493 of 2022) there is no limit on how much of a house roof you can cover, anywhere in the country. The conditions that remain are about how the panels sit, not how many there are - and the money side (an SEAI grant of up to EUR 1,800 and 0% VAT) is as important as the planning side. The July 2026 exemption changes do not touch solar; this is the standing regime.
Roof panels on a house: no area cap, three conditions
Class 2(c) of the regulations, as rewritten in 2022, exempts solar panels on the roof of a house (and on sheds or garages in its garden) with no area limit. The conditions:
- Projection: no more than 15 cm above a pitched roof plane, or 50 cm above a flat roof.
- Set back at least 50 cm from the edge of the roof.
- No hazardous glint or glare: if the installation dazzles - particularly anywhere aircraft matter - the exemption is lost until it is fixed or a mitigation plan is agreed with the council.
Near an airport? Houses are still uncapped
The 2022 package created 43 Solar Safeguarding Zones around airports, aerodromes and hospital helipads (S.I. 492 of 2022; the maps are on myplan.ie). Inside those zones, large rooftop installations on commercial, industrial, apartment and community buildings are capped at 300 m² per roof. Houses are the exception: the Government's own guidance confirms there is no rooftop limit on a house whether inside or outside a zone. The glint-and-glare condition is what protects aviation on the domestic side.
Ground-mounted and wall-mounted: where the limits live
Free-standing panels in the garden are exempt up to 25 m² of total panel area (counting any already there), behind the front wall of the house, up to 2.5 m high, and at least 25 m² of private open space must remain. In an architectural conservation area, free-standing panels are exempt only if they would not materially affect the area's character.
Wall-mounted panels on a house are not exempt at all - that is an application. And on a protected structure, no solar exemption applies unless the works would not materially affect its character; a section 57 declaration from the council settles that formally.
The money: EUR 1,800 grant and 0% VAT
The SEAI Solar Electricity Grant pays EUR 700 per kWp for the first 2 kWp and EUR 200 per kWp up to 4 kWp - a maximum of EUR 1,800, reached at a 4 kWp system. The key conditions: the home must have been built and occupied before 2021, grant approval must be in place before work starts, the installer must be SEAI-registered, and a post-works BER assessment is required (there is no minimum grade - it just must be done). Government has signalled the grant will step down by up to EUR 300 a year, with the scheme due to end in 2029 - the direction of travel favours acting sooner.
Separately, VAT on the supply and installation of solar panels for private dwellings has been 0% since 1 May 2023, covering the panels, inverter and a battery when installed as one job.
Building control: usually no paperwork, but the regulations still apply
A panels-only domestic installation that is planning-exempt and needs no fire safety certificate requires no commencement notice - that is how the Building Control Regulations' exclusion operates. The building regulations themselves still apply in substance: the roof must take the load, and the electrical connection is registered work through a Safe Electric electrician, with the installer handling the ESB Networks grid notification.
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Quick answers
Do I need planning permission for solar panels on my house?
Almost never for a roof installation: since 2022 there is no area cap on house roofs anywhere in Ireland, provided the panels sit within 15 cm of a pitched roof plane (50 cm on flat roofs), stay 50 cm from the roof edge, and cause no hazardous glare. Protected structures and wall-mounted panels are the exceptions that need permission.
I live near an airport - are my panels restricted?
No. The 300 m² Solar Safeguarding Zone cap applies to commercial, industrial, apartment and community roofs, not houses. Your obligation is the glint-and-glare condition, which applies everywhere.
How much is the SEAI solar grant in 2026?
Up to EUR 1,800: EUR 700 per kWp for the first 2 kWp, then EUR 200 per kWp to 4 kWp. The home must be pre-2021, approval must come before works, and a BER assessment is required after. Planned reductions of up to EUR 300 a year have been signalled, with the scheme due to end in 2029.
Is there VAT on domestic solar?
No - 0% VAT has applied to the supply and installation of solar panels for private dwellings since 1 May 2023, including the inverter and a battery installed as part of the same job.
Sources
Related
General guidance, not legal or planning advice. The regulations and your local authority's interpretation bind; conditions and local rules (protected structures, architectural conservation areas, flood zones) can change the answer for a specific property. When in doubt, ask your council for a Section 5 declaration or talk to a planning consultant.