Solar Panels in Castletown, Co. Laois
Castletown is a village in Co. Laois with a population of around 454. Located 7.2 km from Portlaoise, the area has a solar yield of 777 kWh/kWp. A 4kWp solar system generates approximately 3,108 kWh annually, saving an estimated €932+ per year. The SEAI grant of up to €1,800 and 0% VAT bring the net cost to €3,200–€6,200.
What is the solar potential in Castletown?
| Solar Metric | Value |
|---|---|
| Solar Yield | 777 kWh/kWp |
| 4kWp System Output | 3,108 kWh/yr |
| Sunshine Hours | 1,278 hrs/yr |
| Est. Annual Savings | €932+ |
| Household Coverage | 74% of avg use |
Solar yield calculated for Castletown (52.98°N, 7.49°W) using PVGIS satellite data. Actual output varies by roof orientation, shading, and system specification.
Monthly Solar Output in Castletown
kWh per month (4kWp system)
Castletown at a Glance
| Area Data | Value |
|---|---|
| Population | 454 (Census 2022) |
| Households | 155 |
| Houses/Bungalows | 100% of dwellings |
| Owner-Occupied | 69% |
| Built Before 2000 | 63% |
| Avg. Rooms per Home | 5.7 |
| Elevation | 103 metres |
| Eircode Area | R32 |
| Dist. to Portlaoise | 7.2 km |
| Location | Inland |
| Coordinates | 52.9779°N, 7.4943°W |
Population and housing data: CSO Census 2022. Weather data: Met Eireann (Gurteen, 35 km).
Weather & Climate in Castletown
Weather data from Met Eireann (Gurteen station, 35 km from Castletown). 5-year average (2019–2023).
Solar Suitability in Castletown
100% of dwellings in Castletown are houses or bungalows, making the area highly suited for rooftop solar panels. 69% 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).
Solar Power in Castletown, Co. Laois
Castletown is a village in Co. Laois with a population of 454 (CSO Census 2022). It is conveniently close to Portlaoise (7.2 km), where most SEAI-registered installers in the county are based. The Eircode routing key for Castletown is R32. You'll need your full Eircode when applying for the SEAI grant. According to the 2022 Census, Castletown has 155 households, of which 100% are houses or bungalows — well suited for rooftop solar panels. Based on satellite data for this location, a 4kWp solar system generates approximately 3,108 kWh per year (777 kWh/kWp). The area has moderate rainfall (948 mm/yr), with a mean temperature of 10.1°C.
Advantages of Solar Energy for Castletown Homeowners
Save on Electricity Bills
Homeowners in Castletown can save an estimated €932+ per year on electricity with a 4kWp solar system generating 3,552 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. Laois ranks #10 in Ireland for solar yield with 888 kWh/kWp. Homes in Castletown benefit from some of the best solar conditions in the country.
25+ Year Lifespan
A system installed in Castletown today will generate clean electricity for 25-30 years with minimal maintenance.
Solar grants available in Castletown
Homeowners in Castletown, Co. Laois 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 Laois
SEAI registered solar panel installers covering Laois.
Top Rated Solar Installers Near Castletown
Read verified reviews from solar panel installers serving Castletown, Co. Laois.
Areas around Castletown we serve
Also serving nearby areas in Laois:
Find Solar Installers in Laois
Browse SEAI-registered installers covering Castletown and all of Laois.
Your solar questions for Castletown
How much do solar panels cost in Castletown?
A 4kWp system in Castletown 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 3,552 kWh/year, paying for itself in 4-6 years.
What is the difference between solar PV and solar thermal?
Solar PV panels generate electricity from sunlight. Solar thermal panels heat water directly. For most Irish homes, solar PV is the better investment: it's more versatile, qualifies for the SEAI grant, and you can sell excess electricity. Solar thermal only heats water.
Do solar panels increase property value in Castletown?
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 Castletown is a long-term investment in your property.
Can I get solar panels on an east or west facing roof in Castletown?
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.
Is my roof suitable for solar panels in Castletown?
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.
What happens to my solar panels if I move house in Castletown?
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 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
Get a Free Solar Quote in Castletown
Connect with SEAI-registered installers covering Castletown, Co. Laois.