Solar Panels in Firhouse, Co. Dublin
Firhouse is a small town in Co. Dublin with a population of around 500. Located 9.3 km from Dublin, the area has a solar yield of 752 kWh/kWp. A 4kWp solar system generates approximately 3,008 kWh annually, saving an estimated €902+ per year. The SEAI grant of up to €1,800 and 0% VAT bring the net cost to €3,200–€6,200.
How productive are solar panels in Firhouse?
| Solar Metric | Value |
|---|---|
| Solar Yield | 752 kWh/kWp |
| 4kWp System Output | 3,008 kWh/yr |
| Sunshine Hours | 1,514 hrs/yr |
| Est. Annual Savings | €902+ |
| Household Coverage | 72% of avg use |
Solar yield calculated for Firhouse (53.28°N, 6.34°W) using PVGIS satellite data. Actual output varies by roof orientation, shading, and system specification.
Monthly Solar Output in Firhouse
kWh per month (4kWp system)
Firhouse at a Glance
| Area Data | Value |
|---|---|
| Population | 500 (Census 2022) |
| Houses/Bungalows (Co. Dublin avg.) | 71% of dwellings |
| Owner-Occupied (Co. Dublin avg.) | 57% |
| Built Before 2000 (Co. Dublin avg.) | 73% |
| Avg. Rooms per Home (Co. Dublin avg.) | 4.8 |
| Elevation | 87 metres |
| Eircode Area | D24 |
| Dist. to Dublin | 9.3 km |
| Location | Inland |
| Coordinates | 53.2808°N, 6.3402°W |
Population and housing data: CSO Census 2022. Weather data: Met Eireann (Casement Aerodrome, 7.1 km).
Weather & Climate in Firhouse
Weather data from Met Eireann (Casement Aerodrome station, 7.1 km from Firhouse). 5-year average (2019–2023).
Solar Suitability in Firhouse
Across Co. Dublin, 71% of dwellings are houses or bungalows, with good potential for rooftop solar installations. 57% 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).
About Solar Energy in Firhouse
Firhouse is a small town in Co. Dublin with a population of 500 (CSO Census 2022). It is conveniently close to Dublin (9.3 km), where most SEAI-registered installers in the county are based. The Eircode routing key for Firhouse is D24. You'll need your full Eircode when applying for the SEAI grant. Across the wider Dublin area, 71% of dwellings are houses or bungalows and 57% are owner-occupied (Census 2022). Homeowners in Firhouse 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 3,008 kWh per year (752 kWh/kWp). The area has relatively low rainfall (804 mm/yr), with a mean temperature of 10.2°C.
Benefits of Solar Panels in Firhouse
Save on Electricity Bills
Homeowners in Firhouse can save an estimated €902+ per year on electricity with a 4kWp solar system generating 3,660 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.
Top Solar County in Ireland
Co. Dublin ranks #4 in Ireland for solar yield with 915 kWh/kWp. Homes in Firhouse benefit from some of the best solar conditions in the country.
25+ Year Lifespan
A system installed in Firhouse today will generate clean electricity for 25-30 years with minimal maintenance.
Government Support for Solar in Firhouse
Homeowners in Firhouse, Co. Dublin 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 Dublin
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What Firhouse homeowners ask about solar
How much do solar panels cost in Firhouse?
A 4kWp system in Firhouse 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 3,660 kWh/year, paying for itself in 4-6 years.
How does shading affect solar panels in Firhouse?
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.
Is my roof suitable for solar panels in Firhouse?
Most roofs are suitable. You need at least 15-20 m² of unshaded roof space for a typical 4kWp system (10 panels). South, east, or west-facing roofs work well. Your installer will assess your roof's orientation, angle, and structural suitability during a site survey.
Do I need planning permission for solar panels?
Most residential solar installations are exempt from planning permission, provided panels don't project more than 15cm from the roof and don't cover more than 50% of total roof area.
Are solar panels worth it in Firhouse?
Yes. With estimated savings of €902+ per year, the €1,800 SEAI grant, 0% VAT, and export income of 15-25c/kWh, a solar system in Firhouse pays for itself in 4-6 years and lasts 25+ years.
What is the payback period for solar panels in Firhouse?
With a net cost of €3,200-€6,200 after the SEAI grant and savings of €902+ per year plus export income, a typical solar system in Firhouse pays for itself in 4-6 years. After payback, you get 20+ years of near-free electricity.
Do solar panels work in winter in Dublin?
Yes, solar panels generate electricity all year round. While output is lower in winter, Dublin still receives usable daylight hours even in December. Annual generation figures (3,660 kWh for a 4kWp system) already account for seasonal variation.
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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