Solar Panels in Castledermot, Co. Kildare
Castledermot, Co. Kildare, receives 1,295+ sunshine hours per year — ideal conditions for solar energy. A 4kWp system generates approximately 3,540 kWh annually, covering 84% of average household electricity use and saving an estimated €1062+ 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.
Castledermot solar yield and performance data
Solar Yield
4kWp Output
Sunshine
Est. Savings
Household Coverage
Population
Eircode Area
Dist. to Naas
Location
Based on county-level solar data for Kildare. Actual output varies by roof orientation, shading, and system specification.
Castledermot and Renewable Energy
Castledermot is a town in Co. Kildare with a population of 1,685 (CSO Census 2022). It is accessible from Naas (35.7 km), where most SEAI-registered installers in the county are based. The Eircode routing key for Castledermot is R14 — you'll need your full Eircode when applying for the SEAI grant.
Why Go Solar in Castledermot?
Save on Electricity Bills
Homeowners in Castledermot can save an estimated €1062+ per year on electricity with a 4kWp solar system generating 3,540 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 Castledermot, 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 Castledermot today will generate clean electricity for 25-30 years with minimal maintenance.
SEAI Solar Grant for Castledermot Residents
Homeowners in Castledermot, Co. Kildare 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 Kildare
SEAI registered solar panel installers covering Kildare.
Nearby Towns Also Served
Also serving nearby areas in Kildare:
Find Solar Installers in Kildare
Browse SEAI-registered installers covering Castledermot and all of Kildare.
Frequently Asked Questions About Solar Panels in Castledermot
How much do solar panels cost in Castledermot?
A 4kWp system in Castledermot 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 3,540 kWh/year, paying for itself in 4-6 years.
How much electricity will solar panels generate in Castledermot?
Based on Kildare county data, a 4kWp system in Castledermot generates approximately 3,540 kWh per year — covering 84% of average household use (4,200 kWh/year). Kildare receives around 1,295 sunshine hours annually.
Are solar panels worth it in Castledermot?
Yes. With estimated savings of €1062+ per year, the €1,800 SEAI grant, 0% VAT, and export income of 15-25c/kWh, a solar system in Castledermot pays for itself in 4-6 years and lasts 25+ years.
What size solar system do I need for my home in Castledermot?
Most homes in Castledermot benefit from a 3-6 kWp system. A 4kWp system (10 panels) covers 84% of average household electricity use. Your installer will assess your roof space, orientation, and energy usage to recommend the optimal size.
How does shading affect solar panels in Castledermot?
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 roof direction is best for solar panels in Castledermot?
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.
Sources
Last updated: February 2026
Reviewed by the Solar Info editorial team. Editorial policy
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