Solar Panels in Castletown Geoghegan, Co. Westmeath
Castletown Geoghegan is a village in Co. Westmeath with a population of around 297. Located 13.4 km from Mullingar, the area has a solar yield of 771 kWh/kWp. A 4kWp solar system generates approximately 3,084 kWh annually, saving an estimated €925+ per year. The SEAI grant of up to €1,800 and 0% VAT bring the net cost to €3,200–€6,200.
Castletown Geoghegan solar yield and performance data
| Solar Metric | Value |
|---|---|
| Solar Yield | 771 kWh/kWp |
| 4kWp System Output | 3,084 kWh/yr |
| Sunshine Hours | 1,240 hrs/yr |
| Est. Annual Savings | €925+ |
| Household Coverage | 73% of avg use |
Solar yield calculated for Castletown Geoghegan (53.44°N, 7.49°W) using PVGIS satellite data. Actual output varies by roof orientation, shading, and system specification.
Monthly Solar Output in Castletown Geoghegan
kWh per month (4kWp system)
Castletown Geoghegan at a Glance
| Area Data | Value |
|---|---|
| Population | 297 (Census 2022) |
| Households | 105 |
| Houses/Bungalows | 99% of dwellings |
| Owner-Occupied | 73% |
| Built Before 2000 | 74% |
| Avg. Rooms per Home | 5.5 |
| Elevation | 100 metres |
| Eircode Area | N91 |
| Dist. to Mullingar | 13.4 km |
| Location | Inland |
| Coordinates | 53.4447°N, 7.4858°W |
Population and housing data: CSO Census 2022. Weather data: Met Eireann (Mullingar, 13.1 km).
Weather & Climate in Castletown Geoghegan
Weather data from Met Eireann (Mullingar station, 13.1 km from Castletown Geoghegan). 5-year average (2019–2023).
Solar Suitability in Castletown Geoghegan
99% of dwellings in Castletown Geoghegan are houses or bungalows, making the area highly suited for rooftop solar panels. 73% of homes are owner-occupied — homeowners can apply directly for the SEAI grant. 74% of homes were built before 2000, qualifying for the SEAI solar grant (homes built and occupied before 2021 are eligible).
Going Solar in Castletown Geoghegan
Castletown Geoghegan is a village in Co. Westmeath with a population of 297 (CSO Census 2022). It is a short drive from Mullingar (13.4 km), where most SEAI-registered installers in the county are based. The Eircode routing key for Castletown Geoghegan is N91. You'll need your full Eircode when applying for the SEAI grant. According to the 2022 Census, Castletown Geoghegan has 105 households, of which 99% are houses or bungalows — well suited for rooftop solar panels. Based on satellite data for this location, a 4kWp solar system generates approximately 3,084 kWh per year (771 kWh/kWp). The area has moderate rainfall (1062 mm/yr), with a mean temperature of 9.8°C.
Solar panel benefits in Castletown Geoghegan, Westmeath
Save on Electricity Bills
Homeowners in Castletown Geoghegan can save an estimated €925+ per year on electricity with a 4kWp solar system generating 3,484 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.
Increase Property Value
Solar panels improve your BER rating and can add up to 4% to your property value.
25+ Year Lifespan
A system installed in Castletown Geoghegan today will generate clean electricity for 25-30 years with minimal maintenance.
Castletown Geoghegan SEAI solar PV grant details
Homeowners in Castletown Geoghegan, Co. Westmeath 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 Westmeath
SEAI registered solar panel installers covering Westmeath.
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Solar Panel FAQs for Castletown Geoghegan
How much do solar panels cost in Castletown Geoghegan?
A 4kWp system in Castletown Geoghegan 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 3,484 kWh/year, paying for itself in 4-6 years.
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.
How long do solar panels last?
Modern solar panels are warrantied for 25-30 years and typically last even longer. Panel efficiency degrades by about 0.5% per year, so after 25 years, your panels will still produce around 87% of their original output. Inverters typically last 10-15 years and may need one replacement.
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.
What happens to my solar panels if I move house in Castletown Geoghegan?
Solar panels stay with the property as a permanent fixture. They add value to your home for the next buyer. The SEAI grant does not need to be repaid if you sell. Your installer can transfer monitoring accounts to the new owner.
What maintenance do solar panels need?
Solar panels need very little maintenance. Rain keeps them clean in most cases. There are no moving parts. Your inverter may need replacing once in 25 years (10-15 year lifespan). Annual visual checks and occasional cleaning if near trees is all that's needed.
Are solar panels worth it in Castletown Geoghegan?
Yes. With estimated savings of €925+ per year, the €1,800 SEAI grant, 0% VAT, and export income of 15-25c/kWh, a solar system in Castletown Geoghegan pays for itself in 4-6 years and lasts 25+ years.
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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