Solar Panels in Rathvilly, Co. Carlow
Rathvilly is a small town in Co. Carlow with a population of around 1,074. Located 16.3 km from Carlow Town, the area has a solar yield of 774 kWh/kWp. A 4kWp solar system generates approximately 3,096 kWh annually, saving an estimated €929+ per year. The SEAI grant of up to €1,800 and 0% VAT bring the net cost to €3,200–€6,200.
Solar energy output for Rathvilly, Co. Carlow
| Solar Metric | Value |
|---|---|
| Solar Yield | 774 kWh/kWp |
| 4kWp System Output | 3,096 kWh/yr |
| Sunshine Hours | 1,490 hrs/yr |
| Est. Annual Savings | €929+ |
| Household Coverage | 74% of avg use |
Solar yield calculated for Rathvilly (52.88°N, 6.69°W) using PVGIS satellite data. Actual output varies by roof orientation, shading, and system specification.
Monthly Solar Output in Rathvilly
kWh per month (4kWp system)
Rathvilly at a Glance
| Area Data | Value |
|---|---|
| Population | 1,074 (Census 2022) |
| Households | 380 |
| Houses/Bungalows | 99% of dwellings |
| Owner-Occupied | 62% |
| Built Before 2000 | 51% |
| Avg. Rooms per Home | 5.5 |
| Elevation | 122 metres |
| Eircode Area | R93 |
| Dist. to Carlow Town | 16.3 km |
| Location | Inland |
| Coordinates | 52.8808°N, 6.6945°W |
Population and housing data: CSO Census 2022. Weather data: Met Eireann (Oak Park, 15 km).
Weather & Climate in Rathvilly
Weather data from Met Eireann (Oak Park station, 15 km from Rathvilly). 5-year average (2019–2023).
Solar Suitability in Rathvilly
99% of dwellings in Rathvilly are houses or bungalows, making the area highly suited for rooftop solar panels. 62% of homes are owner-occupied — homeowners can apply directly for the SEAI grant. 51% of homes were built before 2000, qualifying for the SEAI solar grant (homes built and occupied before 2021 are eligible).
Rathvilly: Local Solar Energy Profile
Rathvilly is a small town in Co. Carlow with a population of 1,074 (CSO Census 2022). It is a short drive from Carlow Town (16.3 km), where most SEAI-registered installers in the county are based. The Eircode routing key for Rathvilly is R93. You'll need your full Eircode when applying for the SEAI grant. According to the 2022 Census, Rathvilly has 380 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 3,096 kWh per year (774 kWh/kWp). The area has relatively low rainfall (867 mm/yr), with a mean temperature of 10.5°C.
How solar panels pay off in Rathvilly
Save on Electricity Bills
Homeowners in Rathvilly can save an estimated €929+ per year on electricity with a 4kWp solar system generating 3,644 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. Carlow ranks #5 in Ireland for solar yield with 911 kWh/kWp. Homes in Rathvilly benefit from some of the best solar conditions in the country.
25+ Year Lifespan
A system installed in Rathvilly today will generate clean electricity for 25-30 years with minimal maintenance.
What SEAI grants can Rathvilly homeowners claim?
Homeowners in Rathvilly, Co. Carlow 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 Carlow
SEAI registered solar panel installers covering Carlow.
Top Rated Solar Installers Near Rathvilly
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Solar Panels in Areas Near Rathvilly
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Common Questions About Going Solar in Rathvilly
How much do solar panels cost in Rathvilly?
A 4kWp system in Rathvilly 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 3,644 kWh/year, paying for itself in 4-6 years.
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.
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 add a battery to my solar system?
Yes. A home battery (typically 5-10 kWh) stores excess solar electricity for evening use. This increases your self-consumption from around 30-40% to 60-80%. Batteries currently cost €3,000-€6,000 and are not yet covered by the SEAI grant.
Are solar panels worth it in Rathvilly?
Yes. With estimated savings of €929+ per year, the €1,800 SEAI grant, 0% VAT, and export income of 15-25c/kWh, a solar system in Rathvilly pays for itself in 4-6 years and lasts 25+ years.
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.
Do solar panels work in winter in Carlow?
Yes, solar panels generate electricity all year round. While output is lower in winter, Carlow still receives usable daylight hours even in December. Annual generation figures (3,644 kWh for a 4kWp system) already account for seasonal variation.
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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