Solar Panels in Carndonagh, Co. Donegal
Carndonagh, in rural Co. Donegal, has a solar yield of 729 kWh/kWp (ideal conditions for solar energy). A 4kWp system generates approximately 2,916 kWh annually, covering 69% of average household electricity use and saving an estimated €875+ per year. With the SEAI grant of up to €1,800 and 0% VAT, the net cost is €3,200–€6,200 with payback in 4–6 years.
Solar energy output for Carndonagh, Co. Donegal
| Solar Metric | Value |
|---|---|
| Solar Yield | 729 kWh/kWp |
| 4kWp System Output | 2,916 kWh/yr |
| Sunshine Hours | 1,175 hrs/yr |
| Est. Annual Savings | €875+ |
| Household Coverage | 69% of avg use |
Solar yield calculated for Carndonagh (55.25°N, 7.26°W) using PVGIS satellite data. Actual output varies by roof orientation, shading, and system specification.
Monthly Solar Output in Carndonagh
kWh per month (4kWp system)
Carndonagh at a Glance
| Area Data | Value |
|---|---|
| Population | 2,768 (Census 2022) |
| Households | 1,066 |
| Houses/Bungalows | 93% of dwellings |
| Owner-Occupied | 52% |
| Built Before 2000 | 52% |
| Avg. Rooms per Home | 5.5 |
| Elevation | 44 metres |
| Eircode Area | F92 |
| Dist. to Letterkenny | 44.6 km |
| Location | Inland |
| Coordinates | 55.2515°N, 7.2613°W |
Population and housing data: CSO Census 2022. Weather data: Met Eireann (Malin Head, 14.3 km).
Weather & Climate in Carndonagh
Weather data from Met Eireann (Malin Head station, 14.3 km from Carndonagh). 5-year average (2019–2023).
Solar Suitability in Carndonagh
93% of dwellings in Carndonagh are houses or bungalows, making the area highly suited for rooftop solar panels. 52% of homes are owner-occupied — homeowners can apply directly for the SEAI grant. 52% of homes were built before 2000, qualifying for the SEAI solar grant (homes built and occupied before 2021 are eligible).
Carndonagh: Local Solar Energy Profile
Carndonagh is a town in Co. Donegal with a population of 2,768 (CSO Census 2022). It is accessible from Letterkenny (44.6 km), where most SEAI-registered installers in the county are based. The Eircode routing key for Carndonagh is F92. You'll need your full Eircode when applying for the SEAI grant. According to the 2022 Census, Carndonagh has 1,066 households, of which 93% are houses or bungalows — well suited for rooftop solar panels. Based on satellite data for this location, a 4kWp solar system generates approximately 2,916 kWh per year (729 kWh/kWp). The area has moderate rainfall (1191 mm/yr), with a mean temperature of 10.3°C.
How solar panels pay off in Carndonagh
Save on Electricity Bills
Homeowners in Carndonagh can save an estimated €875+ per year on electricity with a 4kWp solar system generating 3,268 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 Carndonagh, 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 Carndonagh today will generate clean electricity for 25-30 years with minimal maintenance.
What SEAI grants can Carndonagh homeowners claim?
Homeowners in Carndonagh, Co. Donegal 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 Donegal
SEAI registered solar panel installers covering Donegal.
Top Rated Solar Installers Near Carndonagh
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Solar Panels in Areas Near Carndonagh
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Common Questions About Going Solar in Carndonagh
How much do solar panels cost in Carndonagh?
A 4kWp system in Carndonagh 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 3,268 kWh/year, paying for itself in 4-6 years.
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.
What is the payback period for solar panels in Carndonagh?
With a net cost of €3,200-€6,200 after the SEAI grant and savings of €875+ per year plus export income, a typical solar system in Carndonagh pays for itself in 4-6 years. After payback, you get 20+ years of near-free electricity.
What is a BER assessment and do I need one?
A Building Energy Rating (BER) assessment is required after installing solar panels to claim the SEAI grant. A BER assessor visits your home and rates its energy efficiency from A1 to G. Solar panels typically improve your BER by 1-2 grades. The assessment costs around €150-€200.
Is my roof suitable for solar panels in Carndonagh?
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 solar panels work in winter in Donegal?
Yes, solar panels generate electricity all year round. While output is lower in winter, Donegal still receives usable daylight hours even in December. Annual generation figures (3,268 kWh for a 4kWp system) already account for seasonal variation.
How much electricity will solar panels generate in Carndonagh?
Based on Donegal county data, a 4kWp system in Carndonagh generates approximately 3,268 kWh per year, covering 69% of average household use (4,200 kWh/year). Donegal receives around 1,175 sunshine hours annually.
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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