Solar Panels in Charlestown, Co. Mayo
Charlestown is a small town in Co. Mayo with a population of around 1,172. Located 40 km from Castlebar, the area has a solar yield of 841 kWh/kWp. A 4kWp solar system generates approximately 3,364 kWh annually, saving an estimated €1009+ per year. The SEAI grant of up to €1,800 and 0% VAT bring the net cost to €6,500–€7,200.
Charlestown solar yield and performance data
| Solar Metric | Value |
|---|---|
| Solar Yield | 841 kWh/kWp |
| 4kWp System Output | 3,364 kWh/yr |
| Sunshine Hours | 1,105 hrs/yr |
| Est. Annual Savings | €1009+ |
| Household Coverage | 80% of avg use |
Based on county-level solar data for Mayo. Actual output varies by roof orientation, shading, and system specification.
Charlestown at a Glance
| Area Data | Value |
|---|---|
| Population | 1,172 (Census 2022) |
| Households | 478 |
| Houses/Bungalows | 91% of dwellings |
| Owner-Occupied | 57% |
| Built Before 2000 | 51% |
| Avg. Rooms per Home | 5.2 |
| Elevation | 65 metres |
| Eircode Area | F35 |
| Dist. to Castlebar | 40 km |
| Location | Inland |
| Coordinates | 53.9642°N, 8.7942°W |
Population and housing data: CSO Census 2022. Weather data: Met Eireann (Knock Airport, 6.6 km).
Weather & Climate in Charlestown
Weather data from Met Eireann (Knock Airport station, 6.6 km from Charlestown). 5-year average (2019–2023).
Solar Suitability in Charlestown
91% of dwellings in Charlestown are houses or bungalows, making the area highly suited for rooftop solar panels. 57% of homes are owner-occupied — homeowners can apply directly for the SEAI grant. 51% of homes were built before 2000, qualifying for the SEAI solar grant (homes built and occupied before 2021 are eligible).
Going Solar in Charlestown
Charlestown is a small town in Co. Mayo with a population of 1,172 (CSO Census 2022). It is accessible from Castlebar (40 km), where most SEAI-registered installers in the county are based. The Eircode routing key for Charlestown is F35. You'll need your full Eircode when applying for the SEAI grant. According to the 2022 Census, Charlestown has 478 households, of which 91% are houses or bungalows — well suited for rooftop solar panels. The area receives around 1,105 sunshine hours annually, allowing a 4kWp solar system to generate approximately 3,364 kWh per year. The area has higher rainfall (1447 mm/yr), with a mean temperature of 9.3°C.
Solar panel benefits in Charlestown, Mayo
Save on Electricity Bills
Homeowners in Charlestown can save an estimated €1009+ per year on electricity with a 4kWp solar system generating 3,364 kWh annually.
Energy Independence
For homes in rural Charlestown, 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 Charlestown today will generate clean electricity for 25-30 years with minimal maintenance.
Charlestown SEAI solar PV grant details
Homeowners in Charlestown, Co. Mayo can claim up to €1,800 from the SEAI solar PV grant (2026). Combined with 0% VAT, the net cost of a 4kWp system is typically€6,500–€7,200.
304 SEAI-registered solar installers serve Charlestown, Co. Mayo. Compare installers in Mayo or read verified reviews.
Solar Installers Serving Charlestown
SEAI registered solar panel installers covering Charlestown, Co. Mayo.
Bespoke Solar PV Installations Ltd
carlow, cavan, clare +23 more
Lumen Engineering Limited T/A Lumen Solar
carlow, cavan, clare +23 more
Top Rated Solar Installers Near Charlestown
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Solar Panel FAQs for Charlestown
How much do solar panels cost in Charlestown?
A 4.4 kWp system in Charlestown typically costs €8,300–€9,000 before grants. After the €1,800 SEAI grant and 0% VAT, the net cost is €6,500–€7,200. The system generates approximately 3,364 kWh/year, paying for itself in 4-6 years.
What is the payback period for solar panels in Charlestown?
With a net cost of €6,500–€7,200 after the SEAI grant and savings of €1009+ per year plus export income, a typical solar system in Charlestown pays for itself in 4-6 years. After payback, you get 20+ years of near-free electricity.
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.
Do solar panels work in winter in Mayo?
Yes, solar panels generate electricity all year round. While output is lower in winter, Mayo still receives usable daylight hours even in December. Annual generation figures (3,364 kWh for a 4kWp system) already account for seasonal variation.
Do solar panels increase property value in Charlestown?
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 Charlestown is a long-term investment in your property.
What size solar system do I need for my home in Charlestown?
Most homes in Charlestown benefit from a 3-6 kWp system. A 4kWp system (10 panels) covers 80% of average household electricity use. Your installer will assess your roof space, orientation, and energy usage to recommend the optimal size.
Can I get solar panels on an east or west facing roof in Charlestown?
Yes. East or west-facing roofs still produce 80-85% of the output of a south-facing roof. Many installers recommend splitting panels across east and west to spread generation throughout the day, which can actually improve self-consumption.
Can you go off-grid with solar in Charlestown?
Fully off-grid setups are rare in Charlestown. Most homes stay grid-connected and sell surplus back through the Microgeneration Support Scheme. A hybrid inverter with 10-20 kWh of battery storage covers evenings and power cuts, which is what most people searching "off-grid" actually want. A true off-grid system needs a much larger array and battery bank, and you lose the grant-supported export income.
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: September 2026
Fact-checked by John Rooney, Solar Energy Editor. Editorial policy
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