Solar Panels in Killala, Co. Mayo
Killala is a small town in Co. Mayo with a population of around 587. Located 50.5 km from Castlebar, the area has a solar yield of 742 kWh/kWp. A 4kWp solar system generates approximately 2,968 kWh annually, saving an estimated €890+ per year. The SEAI grant of up to €1,800 and 0% VAT bring the net cost to €3,200–€6,200.
Killala solar irradiance and generation figures
| Solar Metric | Value |
|---|---|
| Solar Yield | 742 kWh/kWp |
| 4kWp System Output | 2,968 kWh/yr |
| Sunshine Hours | 1,105 hrs/yr |
| Est. Annual Savings | €890+ |
| Household Coverage | 71% of avg use |
Solar yield calculated for Killala (54.21°N, 9.22°W) using PVGIS satellite data. Actual output varies by roof orientation, shading, and system specification.
Monthly Solar Output in Killala
kWh per month (4kWp system)
Killala at a Glance
| Area Data | Value |
|---|---|
| Population | 587 (Census 2022) |
| Households | 247 |
| Houses/Bungalows | 98% of dwellings |
| Owner-Occupied | 65% |
| Built Before 2000 | 73% |
| Avg. Rooms per Home | 5.3 |
| Elevation | 9 metres |
| Eircode Area | F26 |
| Dist. to Castlebar | 50.5 km |
| Location | Inland |
| Coordinates | 54.2139°N, 9.2209°W |
Population and housing data: CSO Census 2022. Weather data: Met Eireann (Newport, 39.6 km).
Weather & Climate in Killala
Weather data from Met Eireann (Newport station, 39.6 km from Killala). 5-year average (2019–2023).
Solar Suitability in Killala
98% of dwellings in Killala are houses or bungalows, making the area highly suited for rooftop solar panels. 65% of homes are owner-occupied — homeowners can apply directly for the SEAI grant. 73% of homes were built before 2000, qualifying for the SEAI solar grant (homes built and occupied before 2021 are eligible).
Renewable Energy Potential in Killala
Killala is a small town in Co. Mayo with a population of 587 (CSO Census 2022). It is located away from Castlebar (50.5 km), where most SEAI-registered installers in the county are based. The Eircode routing key for Killala is F26. You'll need your full Eircode when applying for the SEAI grant. According to the 2022 Census, Killala has 247 households, of which 98% are houses or bungalows — well suited for rooftop solar panels. Based on satellite data for this location, a 4kWp solar system generates approximately 2,968 kWh per year (742 kWh/kWp). The area has higher rainfall (1785 mm/yr), with a mean temperature of 10.9°C.
Why Go Solar in Killala?
Save on Electricity Bills
Homeowners in Killala can save an estimated €890+ per year on electricity with a 4kWp solar system generating 3,364 kWh annually.
SEAI Grant: Up to €1,800
Get up to €1,800 back from SEAI. The grant is available for homes built before 2021. No means testing. Apply online at seai.ie.
0% VAT on Installation
Residential solar installations are zero-rated for VAT since May 2023, saving approximately €1,000 on a typical system.
Earn from Excess Energy
Sell surplus electricity at 15-25c/kWh through the Microgeneration Support Scheme. The first €400/year is tax-free.
Energy Independence
For homes in rural Killala, solar panels provide energy security and reduced reliance on the grid. Combined with a battery, you can store power for evening use.
25+ Year Lifespan
A system installed in Killala today will generate clean electricity for 25-30 years with minimal maintenance.
SEAI Solar Grant for Killala Residents
Homeowners in Killala, Co. Mayo can apply for the SEAI solar PV grant. The maximum grant of €1,800 is confirmed for 2026.
| System Size | Grant Amount | Typical Net Cost |
|---|---|---|
| 2 kWp | €1,400 | €2,000 - €3,000 |
| 3 kWp | €1,600 | €2,500 - €4,000 |
| 4 kWp+ | €1,800 (max) | €3,200 - €6,200 |
Solar Installers in Mayo
SEAI registered solar panel installers covering Mayo.
Top Rated Solar Installers Near Killala
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Killala solar panel questions answered
How much do solar panels cost in Killala?
A 4kWp system in Killala typically costs €5,000-€8,000 before grants. After the €1,800 SEAI grant and 0% VAT, the net cost is €3,200-€6,200. The system generates approximately 3,364 kWh/year, paying for itself in 4-6 years.
What is the Microgeneration Support Scheme?
The Microgeneration Support Scheme allows homeowners to sell surplus solar electricity back to the grid at 15-25c/kWh. You need a smart meter (free from ESB Networks) and a grid-connected system. The first €400/year of export income is tax-free.
How does shading affect solar panels in Killala?
Shading from trees, chimneys, or nearby buildings can reduce output significantly. Modern systems use optimisers or microinverters so that shading on one panel doesn't drag down the whole system. Your installer will assess shading during the site survey.
Do solar panels increase property value in Killala?
Yes. Solar panels improve your BER rating and can increase property value by up to 4%. Buyers increasingly look for energy-efficient homes with lower running costs. A solar system in Killala is a long-term investment in your property.
What happens to my solar panels if I move house in Killala?
Solar panels stay with the property as a permanent fixture. They add value to your home for the next buyer. The SEAI grant does not need to be repaid if you sell. Your installer can transfer monitoring accounts to the new owner.
What happens during a power cut?
Standard grid-tied solar systems shut down during a power cut for safety reasons (to protect ESB workers). If you need backup power, you can install a hybrid inverter with battery storage that provides power during outages.
Do I need to clean my solar panels?
In most cases, rain keeps solar panels clean enough in Ireland. If your panels are near trees or at a low angle, an annual clean may improve output by 2-5%. Never use abrasive materials. A soft brush and water is sufficient.
Sources
- SEAI — Solar Electricity Grant
- SEAI — Find a Registered Professional
- Revenue — 0% VAT on Solar Panels
- PVGIS — EU Joint Research Centre (solar irradiance data)
- CSO — Census of Population 2022
- Met Eireann — Climate Data
Last updated: March 2026
Fact-checked by John Rooney, Solar Energy Editor. Editorial policy
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