Solar Panels in St. Mullins, Co. Carlow
St. Mullins, Co. Carlow, receives 1,490+ sunshine hours per year — among the highest in Ireland. A 4kWp system generates approximately 3,644 kWh annually, covering 87% of average household electricity use and saving an estimated €1093+ 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 much solar energy can you generate in St. Mullins?
Solar Yield
4kWp Output
Sunshine
Est. Savings
Household Coverage
Eircode Area
Dist. to Carlow Town
Location
Based on county-level solar data for Carlow. Actual output varies by roof orientation, shading, and system specification.
Solar Power in St. Mullins, Co. Carlow
St. Mullins is a community in Co. Carlow. It is accessible from Carlow Town (38.5 km), where most SEAI-registered installers in the county are based. The Eircode routing key for St. Mullins is E53 — you'll need your full Eircode when applying for the SEAI grant. Co. Carlow ranks #5 in Ireland for solar yield, making St. Mullins an excellent location for solar panels.
Advantages of Solar Energy for St. Mullins Homeowners
Save on Electricity Bills
Homeowners in St. Mullins can save an estimated €1093+ 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 St. Mullins benefit from some of the best solar conditions in the country.
25+ Year Lifespan
A system installed in St. Mullins today will generate clean electricity for 25-30 years with minimal maintenance.
What SEAI grants can St. Mullins homeowners claim?
Homeowners in St. Mullins, 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.
Solar Panels in Areas Near St. Mullins
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Common Questions About Going Solar in St. Mullins
How much do solar panels cost in St. Mullins?
A 4kWp system in St. Mullins 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.
How much electricity will solar panels generate in St. Mullins?
Based on Carlow county data, a 4kWp system in St. Mullins generates approximately 3,644 kWh per year — covering 87% of average household use (4,200 kWh/year). Carlow receives around 1,490 sunshine hours annually.
Are solar panels worth it in St. Mullins?
Yes. With estimated savings of €1093+ per year, the €1,800 SEAI grant, 0% VAT, and export income of 15-25c/kWh, a solar system in St. Mullins pays for itself in 4-6 years and lasts 25+ 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 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.
Do I need planning permission for solar panels?
Most residential solar installations are exempt from planning permission, provided panels don't project more than 15cm from the roof and don't cover more than 50% of total roof area.
Sources
Last updated: February 2026
Reviewed by the Solar Info editorial team. Editorial policy
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