Solar Panel Grant in Mayo
The SEAI grant for homes in Co. Mayo, with the county's own housing, BER and output figures.
Free, no obligation. One local SEAI-registered installer prices it, not five.
- €1,400SEAI grant for 2kWp of panels
- €2,400most you can get, with a battery
- 0% VATon solar panels for homes
Homes in Co. Mayo get the same SEAI solar grant as the rest of the country: €1,400 for 2kWp of panels, up to €2,400 with a battery. It's for owners of homes built and occupied before 2025: almost every home in Mayo on Census 2022.
Co. Mayo in numbers
| Co. Mayo | |
|---|---|
| Households | 52,114 |
| Built before 2011 | 93% |
| Owned by the people living there | 76% |
| Flats and apartments | 5% |
| Existing homes rated C or better | 47% |
| Rated E, F or G | 29% |
| Post-works BERs for SEAI grants, 2025 | 2,034 |
| A south roof in Castlebar, per kWp a year | 860 kWh |
Housing from Census 2022, as shares of households that answered. Ratings from 21,451 BER certificates for existing Mayo homes built before 2011, leaving out the BERs done for grant claims. Output from the EU's PVGIS satellite record, panels at 35°.
BER ratings in Mayo
A post-works BER is needed to claim the grant, with no set rating to reach. On SEAI's register, 47% of Mayo's existing homes are C or better already, 25th of the 26 counties, and 29% are E, F or G. Panels improve a BER. There's no set rating to reach for the grant, and insulation lifts it further, with its own SEAI grants.
Who can apply in Mayo
76% of households in Co. Mayo own their home, 3rd of the 26 counties. The grant goes to the owner, so if you rent, it's the landlord who would apply. 5% live in a flat or apartment, where panels on a shared roof need the management company's agreement.
Owners of homes built and occupied before 2025, with an MPRN. SEAI can't have supported solar PV at that address before, a BER assessor rates the home after the panels go in, and you must use an SEAI-registered solar company and have the grant offer before work starts.
What panels make in Mayo
A south roof in Castlebar makes about 860 kWh a year for each kWp of panels, 23rd of the 26 county towns we checked. So the 2kWp the base grant covers makes about 1,721 kWh a year there: 219 kWh in June and 44 in December.
Grant uptake in Mayo
SEAI's register lists 2,034 BERs done in Co. Mayo in 2025 for grant claims, across all SEAI home grants, not just solar. It's a rough measure of how busy the grant schemes are locally, not a count of solar installs.
The grant, by system size
| System | Panels, about | Grant, no battery | Panel grant with a battery | Total with a battery |
|---|---|---|---|---|
| 2kWp | 6 or 7 (SEAI) | €1,400 | €1,400 | €2,000 |
| 3kWp | 9 or 10 | €1,600 | €1,600 | €2,200 |
| 4kWp | 12 or 13 | €1,800 | €1,800 | €2,400 |
| 5kWp | 15 or 16 | €1,800 | €1,800 | €2,400 |
SEAI's grant rules and its own 2kWp, 3kWp and 4kWp examples. Panel counts above 2kWp scale SEAI's "6/7 panels" for 2kWp; panel sizes vary.
No. Works must not start before you get SEAI's grant offer. Sign with an installer, apply, wait for the offer, then the panels go up. Start first and you lose the grant.
Questions people ask
How much is the solar panel grant in Mayo?
The same as everywhere: €1,400 for 2kWp, up to €1,800 for the panels plus €600 for a battery.
Do homes in Mayo qualify on age?
Almost all do: SEAI's grant is for homes built and occupied before 2025, and Census 2022 counts Mayo's homes up to 2022.
Does my Mayo home need a good BER?
No set rating is needed; a post-works BER records the result. 47% of Mayo's existing homes already rate C or better.
Is this site SEAI?
No. solarpanelgrant.ie is not SEAI or a government body and does not award grants. We pass your request to one SEAI-registered solar installer who covers your area. You apply to SEAI yourself, or the installer helps you; SEAI decides and pays the grant.
Your solar grant in 3 taps
Tap your home, the size of system and whether you want a battery. Your SEAI grant and a cost after the grant show as you go. Then, if you want a price, leave your number and one SEAI-registered solar installer who covers your area rings you.