Solar Panels in Castlegar, Co. Galway
This coastal community in Co. Galway benefits from 1,182+ sunshine hours per year — ideal conditions for solar energy. A 4kWp system generates approximately 3,544 kWh annually, covering 84% of average household electricity use and saving an estimated €1063+ 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 Castlegar?
Solar Yield
4kWp Output
Sunshine
Est. Savings
Household Coverage
Eircode Area
Dist. to Galway
Location
Based on county-level solar data for Galway. Actual output varies by roof orientation, shading, and system specification.
Solar Power in Castlegar, Co. Galway
Castlegar is a coastal community in Co. Galway. It is conveniently close to Galway (3.8 km), where most SEAI-registered installers in the county are based. Castlegar's coastal position means good exposure to sunlight, though installations should account for higher wind loads and salt air. The Eircode routing key for Castlegar is H91 — you'll need your full Eircode when applying for the SEAI grant.
Advantages of Solar Energy for Castlegar Homeowners
Save on Electricity Bills
Homeowners in Castlegar can save an estimated €1063+ per year on electricity with a 4kWp solar system generating 3,544 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.
Coastal Location Advantage
Castlegar's coastal position often means fewer obstructions and clearer horizons for solar exposure. Modern panels are designed to withstand coastal conditions including salt air.
25+ Year Lifespan
A system installed in Castlegar today will generate clean electricity for 25-30 years with minimal maintenance.
What SEAI grants can Castlegar homeowners claim?
Homeowners in Castlegar, Co. Galway 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 Galway
SEAI registered solar panel installers covering Galway.
Solar Panels in Areas Near Castlegar
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Common Questions About Going Solar in Castlegar
How much do solar panels cost in Castlegar?
A 4kWp system in Castlegar 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 3,544 kWh/year, paying for itself in 4-6 years.
How much electricity will solar panels generate in Castlegar?
Based on Galway county data, a 4kWp system in Castlegar generates approximately 3,544 kWh per year — covering 84% of average household use (4,200 kWh/year). Galway receives around 1,182 sunshine hours annually.
Are solar panels worth it in Castlegar?
Yes. With estimated savings of €1063+ per year, the €1,800 SEAI grant, 0% VAT, and export income of 15-25c/kWh, a solar system in Castlegar pays for itself in 4-6 years and lasts 25+ years.
What is the payback period for solar panels in Castlegar?
With a net cost of €3,200-€6,200 after the SEAI grant and savings of €1063+ per year plus export income, a typical solar system in Castlegar pays for itself in 4-6 years. After payback, you get 20+ years of near-free electricity.
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).
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.
Sources
Last updated: February 2026
Reviewed by the Solar Info editorial team. Editorial policy
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