Solar Panels in Mountcharles, Co. Donegal
Mountcharles is a small town in Co. Donegal with a population of around 652. Located 45.4 km from Letterkenny, the area has a solar yield of 720 kWh/kWp. A 4kWp solar system generates approximately 2,880 kWh annually, saving an estimated €864+ 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 Mountcharles?
| Solar Metric | Value |
|---|---|
| Solar Yield | 720 kWh/kWp |
| 4kWp System Output | 2,880 kWh/yr |
| Sunshine Hours | 1,175 hrs/yr |
| Est. Annual Savings | €864+ |
| Household Coverage | 69% of avg use |
Solar yield calculated for Mountcharles (54.65°N, 8.20°W) using PVGIS satellite data. Actual output varies by roof orientation, shading, and system specification.
Monthly Solar Output in Mountcharles
kWh per month (4kWp system)
Mountcharles at a Glance
| Area Data | Value |
|---|---|
| Population | 652 (Census 2022) |
| Households | 248 |
| Houses/Bungalows | 97% of dwellings |
| Owner-Occupied | 74% |
| Built Before 2000 | 63% |
| Avg. Rooms per Home | 5.9 |
| Elevation | 77 metres |
| Eircode Area | F94 |
| Dist. to Letterkenny | 45.4 km |
| Location | Inland |
| Coordinates | 54.6464°N, 8.1956°W |
Population and housing data: CSO Census 2022. Weather data: Met Eireann (Finner, 17.2 km).
Weather & Climate in Mountcharles
Weather data from Met Eireann (Finner station, 17.2 km from Mountcharles). 5-year average (2019–2023).
Solar Suitability in Mountcharles
97% of dwellings in Mountcharles are houses or bungalows, making the area highly suited for rooftop solar panels. 74% of homes are owner-occupied — homeowners can apply directly for the SEAI grant. 63% of homes were built before 2000, qualifying for the SEAI solar grant (homes built and occupied before 2021 are eligible).
About Solar Energy in Mountcharles
Mountcharles is a small town in Co. Donegal with a population of 652 (CSO Census 2022). It is accessible from Letterkenny (45.4 km), where most SEAI-registered installers in the county are based. The Eircode routing key for Mountcharles is F94. You'll need your full Eircode when applying for the SEAI grant. According to the 2022 Census, Mountcharles has 248 households, of which 97% are houses or bungalows — well suited for rooftop solar panels. Based on satellite data for this location, a 4kWp solar system generates approximately 2,880 kWh per year (720 kWh/kWp). The area has higher rainfall (1246 mm/yr), with a mean temperature of 10.4°C.
Benefits of Solar Panels in Mountcharles
Save on Electricity Bills
Homeowners in Mountcharles can save an estimated €864+ 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 Mountcharles, 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 Mountcharles today will generate clean electricity for 25-30 years with minimal maintenance.
Government Support for Solar in Mountcharles
Homeowners in Mountcharles, 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.
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Solar coverage near Mountcharles
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What Mountcharles homeowners ask about solar
How much do solar panels cost in Mountcharles?
A 4kWp system in Mountcharles 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 roof direction is best for solar panels in Mountcharles?
South-facing roofs produce the most electricity (100% of potential). South-east and south-west roofs produce around 95%. East or west-facing roofs still produce 80-85%. North-facing roofs are generally not recommended for solar panels in Ireland.
What is the payback period for solar panels in Mountcharles?
With a net cost of €3,200-€6,200 after the SEAI grant and savings of €864+ per year plus export income, a typical solar system in Mountcharles 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).
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.
How does shading affect solar panels in Mountcharles?
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.
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.
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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