Solar Panels in Carnacon, Co. Mayo
Located just 6.1 km from Castlebar, Carnacon receives 1,105+ sunshine hours per year — ideal conditions for solar energy. A 4kWp system generates approximately 3,364 kWh annually, covering 80% of average household electricity use and saving an estimated €1009+ 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.
Carnacon solar yield and performance data
Solar Yield
4kWp Output
Sunshine
Est. Savings
Household Coverage
Eircode Area
Dist. to Castlebar
Location
Based on county-level solar data for Mayo. Actual output varies by roof orientation, shading, and system specification.
Carnacon and Renewable Energy
Carnacon is a area near the county town in Co. Mayo. It is conveniently close to Castlebar (6.1 km), where most SEAI-registered installers in the county are based. The Eircode routing key for Carnacon is F56 — you'll need your full Eircode when applying for the SEAI grant.
Why Go Solar in Carnacon?
Save on Electricity Bills
Homeowners in Carnacon can save an estimated €1009+ per year on electricity with a 4kWp solar system generating 3,364 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.
Increase Property Value
Solar panels improve your BER rating and can add up to 4% to your property value.
25+ Year Lifespan
A system installed in Carnacon today will generate clean electricity for 25-30 years with minimal maintenance.
SEAI Solar Grant for Carnacon Residents
Homeowners in Carnacon, Co. Mayo 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 Mayo
SEAI registered solar panel installers covering Mayo.
Nearby Towns Also Served
Also serving nearby areas in Mayo:
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Browse SEAI-registered installers covering Carnacon and all of Mayo.
Frequently Asked Questions About Solar Panels in Carnacon
How much do solar panels cost in Carnacon?
A 4kWp system in Carnacon 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 3,364 kWh/year, paying for itself in 4-6 years.
How much electricity will solar panels generate in Carnacon?
Based on Mayo county data, a 4kWp system in Carnacon generates approximately 3,364 kWh per year — covering 80% of average household use (4,200 kWh/year). Mayo receives around 1,105 sunshine hours annually.
Are solar panels worth it in Carnacon?
Yes. With estimated savings of €1009+ per year, the €1,800 SEAI grant, 0% VAT, and export income of 15-25c/kWh, a solar system in Carnacon pays for itself in 4-6 years and lasts 25+ years.
What roof direction is best for solar panels in Carnacon?
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.
How do I get the SEAI grant in Carnacon?
Apply online at seai.ie with your MPRN and Eircode. Use an SEAI-registered installer. Do not start work before your Letter of Offer. After installation, complete a BER assessment. The grant is paid to your bank within 4-6 weeks.
What is the payback period for solar panels in Carnacon?
With a net cost of €3,200-€6,200 after the SEAI grant and savings of €1009+ per year plus export income, a typical solar system in Carnacon pays for itself in 4-6 years. After payback, you get 20+ years of near-free electricity.
Sources
Last updated: February 2026
Reviewed by the Solar Info editorial team. Editorial policy
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