Solar Panels in Knocknacarra, Co. Galway
Knocknacarra is a coastal small town in Co. Galway with a population of around 500. Located 3.5 km from Galway, the area has a solar yield of 765 kWh/kWp. A 4kWp solar system generates approximately 3,060 kWh annually, saving an estimated €918+ per year. The SEAI grant of up to €1,800 and 0% VAT bring the net cost to €3,200–€6,200.
Knocknacarra solar irradiance and generation figures
| Solar Metric | Value |
|---|---|
| Solar Yield | 765 kWh/kWp |
| 4kWp System Output | 3,060 kWh/yr |
| Sunshine Hours | 1,182 hrs/yr |
| Est. Annual Savings | €918+ |
| Household Coverage | 73% of avg use |
Solar yield calculated for Knocknacarra (53.27°N, 9.11°W) using PVGIS satellite data. Actual output varies by roof orientation, shading, and system specification.
Monthly Solar Output in Knocknacarra
kWh per month (4kWp system)
Knocknacarra at a Glance
| Area Data | Value |
|---|---|
| Population | 500 (Census 2022) |
| Houses/Bungalows (Co. Galway avg.) | 74% of dwellings |
| Owner-Occupied (Co. Galway avg.) | 47% |
| Built Before 2000 (Co. Galway avg.) | 65% |
| Avg. Rooms per Home (Co. Galway avg.) | 5.1 |
| Elevation | 26 metres |
| Eircode Area | H91 |
| Dist. to Galway | 3.5 km |
| Location | Coastal |
| Coordinates | 53.2687°N, 9.1091°W |
Population and housing data: CSO Census 2022. Weather data: Met Eireann (Athenry, 21.6 km).
Weather & Climate in Knocknacarra
Weather data from Met Eireann (Athenry station, 21.6 km from Knocknacarra). 5-year average (2019–2023).
Solar Suitability in Knocknacarra
Across Co. Galway, 74% of dwellings are houses or bungalows, with good potential for rooftop solar installations. 47% of homes are owner-occupied — homeowners can apply directly for the SEAI grant. 65% of homes were built before 2000, qualifying for the SEAI solar grant (homes built and occupied before 2021 are eligible).
Renewable Energy Potential in Knocknacarra
Knocknacarra is a small town in Co. Galway with a population of 500 (CSO Census 2022). It is conveniently close to Galway (3.5 km), where most SEAI-registered installers in the county are based. Knocknacarra's coastal position means good exposure to sunlight, though installations should account for higher wind loads and salt air. The Eircode routing key for Knocknacarra is H91. You'll need your full Eircode when applying for the SEAI grant. Across the wider Galway area, 74% of dwellings are houses or bungalows and 47% are owner-occupied (Census 2022). Homeowners in Knocknacarra with a south, east, or west-facing roof are well positioned for solar panels. Based on satellite data for this location, a 4kWp solar system generates approximately 3,060 kWh per year (765 kWh/kWp). The area has higher rainfall (1360 mm/yr), with a mean temperature of 10.2°C.
Why Go Solar in Knocknacarra?
Save on Electricity Bills
Homeowners in Knocknacarra can save an estimated €918+ per year on electricity with a 4kWp solar system generating 3,544 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.
Coastal Location Advantage
Knocknacarra's coastal position often means fewer obstructions and clearer horizons for solar exposure. Modern panels are designed to withstand coastal conditions including salt air.
25+ Year Lifespan
A system installed in Knocknacarra today will generate clean electricity for 25-30 years with minimal maintenance.
SEAI Solar Grant for Knocknacarra Residents
Homeowners in Knocknacarra, Co. Galway 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 Galway
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Knocknacarra solar panel questions answered
How much do solar panels cost in Knocknacarra?
A 4kWp system in Knocknacarra 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 3,544 kWh/year, paying for itself in 4-6 years.
How do I get the SEAI grant in Knocknacarra?
Apply online at seai.ie with your MPRN and Eircode. Use an SEAI-registered installer. Do not start work before your Letter of Offer. After installation, complete a BER assessment. The grant is paid to your bank within 4-6 weeks.
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.
What is the payback period for solar panels in Knocknacarra?
With a net cost of €3,200-€6,200 after the SEAI grant and savings of €918+ per year plus export income, a typical solar system in Knocknacarra pays for itself in 4-6 years. After payback, you get 20+ years of near-free electricity.
How long does solar panel installation take?
A typical residential installation takes 1-2 days. This includes scaffolding, mounting the panels, wiring, inverter installation, and connecting to the grid. Your installer handles the ESB Networks notification (NC6 form).
Are solar panels worth it in Knocknacarra?
Yes. With estimated savings of €918+ per year, the €1,800 SEAI grant, 0% VAT, and export income of 15-25c/kWh, a solar system in Knocknacarra pays for itself in 4-6 years and lasts 25+ years.
What is the difference between solar PV and solar thermal?
Solar PV panels generate electricity from sunlight. Solar thermal panels heat water directly. For most Irish homes, solar PV is the better investment: it's more versatile, qualifies for the SEAI grant, and you can sell excess electricity. Solar thermal only heats water.
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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