Solar Panels in Castleisland, Co. Kerry
Castleisland, Co. Kerry, receives 1,246+ sunshine hours per year — among the highest in Ireland. A 4kWp system generates approximately 3,584 kWh annually, covering 85% of average household electricity use and saving an estimated €1075+ 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.
What is the solar potential in Castleisland?
Solar Yield
4kWp Output
Sunshine
Est. Savings
Household Coverage
Population
Eircode Area
Dist. to Killarney
Location
Based on county-level solar data for Kerry. Actual output varies by roof orientation, shading, and system specification.
About Solar Energy in Castleisland
Castleisland is a town in Co. Kerry with a population of 2,536 (CSO Census 2022). It is a short drive from Killarney (16.5 km), where most SEAI-registered installers in the county are based. The Eircode routing key for Castleisland is V31 — you'll need your full Eircode when applying for the SEAI grant. Co. Kerry ranks #8 in Ireland for solar yield, making Castleisland an excellent location for solar panels.
Benefits of Solar Panels in Castleisland
Save on Electricity Bills
Homeowners in Castleisland can save an estimated €1075+ per year on electricity with a 4kWp solar system generating 3,584 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. Kerry ranks #8 in Ireland for solar yield with 896 kWh/kWp. Homes in Castleisland benefit from some of the best solar conditions in the country.
25+ Year Lifespan
A system installed in Castleisland today will generate clean electricity for 25-30 years with minimal maintenance.
Government Support for Solar in Castleisland
Homeowners in Castleisland, Co. Kerry 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 Kerry
SEAI registered solar panel installers covering Kerry.
Where can you find solar installers near Castleisland?
Also serving nearby areas in Kerry:
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Browse SEAI-registered installers covering Castleisland and all of Kerry.
Solar Panel FAQs for Castleisland
How much do solar panels cost in Castleisland?
A 4kWp system in Castleisland 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 3,584 kWh/year, paying for itself in 4-6 years.
How much electricity will solar panels generate in Castleisland?
Based on Kerry county data, a 4kWp system in Castleisland generates approximately 3,584 kWh per year — covering 85% of average household use (4,200 kWh/year). Kerry receives around 1,246 sunshine hours annually.
Are solar panels worth it in Castleisland?
Yes. With estimated savings of €1075+ per year, the €1,800 SEAI grant, 0% VAT, and export income of 15-25c/kWh, a solar system in Castleisland pays for itself in 4-6 years and lasts 25+ years.
Is my roof suitable for solar panels in Castleisland?
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.
Can I get solar panels on an east or west facing roof in Castleisland?
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.
Do I need a smart meter for solar panels?
You need a smart meter to sell surplus electricity back to the grid. ESB Networks installs smart meters for free. Your installer submits the NC6 form to ESB Networks after installation, which triggers the meter upgrade if needed.
Sources
Last updated: February 2026
Reviewed by the Solar Info editorial team. Editorial policy
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