Solar Panels in Rathnew, Co. Wicklow
Located just 3 km from Wicklow Town, Rathnew has a solar yield of 834 kWh/kWp (among the highest in Ireland). A 4kWp system generates approximately 3,336 kWh annually, covering 79% of average household electricity use and saving an estimated €1001+ 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.
How productive are solar panels in Rathnew?
| Solar Metric | Value |
|---|---|
| Solar Yield | 834 kWh/kWp |
| 4kWp System Output | 3,336 kWh/yr |
| Sunshine Hours | 1,514 hrs/yr |
| Est. Annual Savings | €1001+ |
| Household Coverage | 79% of avg use |
Solar yield calculated for Rathnew (52.99°N, 6.08°W) using PVGIS satellite data. Actual output varies by roof orientation, shading, and system specification.
Monthly Solar Output in Rathnew
kWh per month (4kWp system)
Rathnew at a Glance
| Area Data | Value |
|---|---|
| Population | 3,482 (Census 2022) |
| Households | 1,144 |
| Houses/Bungalows | 91% of dwellings |
| Owner-Occupied | 52% |
| Built Before 2000 | 37% |
| Avg. Rooms per Home | 4.9 |
| Elevation | 13 metres |
| Eircode Area | A67 |
| Dist. to Wicklow Town | 3 km |
| Location | Inland |
| Coordinates | 52.9949°N, 6.0821°W |
Population and housing data: CSO Census 2022. Weather data: Met Eireann (Casement Aerodrome, 42 km).
Weather & Climate in Rathnew
Weather data from Met Eireann (Casement Aerodrome station, 42 km from Rathnew). 5-year average (2019–2023).
Solar Suitability in Rathnew
91% of dwellings in Rathnew are houses or bungalows, making the area highly suited for rooftop solar panels. 52% of homes are owner-occupied — homeowners can apply directly for the SEAI grant.
About Solar Energy in Rathnew
Rathnew is a town in Co. Wicklow with a population of 3,482 (CSO Census 2022). It is conveniently close to Wicklow Town (3 km), where most SEAI-registered installers in the county are based. The Eircode routing key for Rathnew is A67. You'll need your full Eircode when applying for the SEAI grant. According to the 2022 Census, Rathnew has 1,144 households, of which 91% are houses or bungalows — well suited for rooftop solar panels. Based on satellite data for this location, a 4kWp solar system generates approximately 3,336 kWh per year (834 kWh/kWp). The area has relatively low rainfall (804 mm/yr), with a mean temperature of 10.2°C.
Benefits of Solar Panels in Rathnew
Save on Electricity Bills
Homeowners in Rathnew can save an estimated €1001+ per year on electricity with a 4kWp solar system generating 3,788 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. Wicklow ranks #3 in Ireland for solar yield with 947 kWh/kWp. Homes in Rathnew benefit from some of the best solar conditions in the country.
25+ Year Lifespan
A system installed in Rathnew today will generate clean electricity for 25-30 years with minimal maintenance.
Government Support for Solar in Rathnew
Homeowners in Rathnew, Co. Wicklow 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 Wicklow
SEAI registered solar panel installers covering Wicklow.
Top Rated Solar Installers Near Rathnew
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Solar coverage near Rathnew
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What Rathnew homeowners ask about solar
How much do solar panels cost in Rathnew?
A 4kWp system in Rathnew 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 3,788 kWh/year, paying for itself in 4-6 years.
What size solar system do I need for my home in Rathnew?
Most homes in Rathnew benefit from a 3-6 kWp system. A 4kWp system (10 panels) covers 79% of average household electricity use. Your installer will assess your roof space, orientation, and energy usage to recommend the optimal size.
Do solar panels work in winter in Wicklow?
Yes, solar panels generate electricity all year round. While output is lower in winter, Wicklow still receives usable daylight hours even in December. Annual generation figures (3,788 kWh for a 4kWp system) already account for seasonal variation.
What happens during a power cut?
Standard grid-tied solar systems shut down during a power cut for safety reasons (to protect ESB workers). If you need backup power, you can install a hybrid inverter with battery storage that provides power during outages.
Can I sell excess solar electricity?
Yes. Under Ireland's Microgeneration Support Scheme, you sell surplus electricity at 15-25c/kWh. You need a smart meter (ESB Networks installs free). The first €400/year of export income is tax-free.
How long does solar panel installation take?
A typical residential installation takes 1-2 days. This includes scaffolding, mounting the panels, wiring, inverter installation, and connecting to the grid. Your installer handles the ESB Networks notification (NC6 form).
What happens to my solar panels if I move house in Rathnew?
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.
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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