Solar Panels in Knocknaheeny, Co. Cork
Knocknaheeny is a small town in Co. Cork with a population of around 500. Located 2.1 km from Cork City, the area has a solar yield of 818 kWh/kWp. A 4kWp solar system generates approximately 3,272 kWh annually, saving an estimated €982+ per year. The SEAI grant of up to €1,800 and 0% VAT bring the net cost to €3,200–€6,200.
Knocknaheeny solar yield and performance data
| Solar Metric | Value |
|---|---|
| Solar Yield | 818 kWh/kWp |
| 4kWp System Output | 3,272 kWh/yr |
| Sunshine Hours | 1,503 hrs/yr |
| Est. Annual Savings | €982+ |
| Household Coverage | 78% of avg use |
Solar yield calculated for Knocknaheeny (51.91°N, 8.50°W) using PVGIS satellite data. Actual output varies by roof orientation, shading, and system specification.
Monthly Solar Output in Knocknaheeny
kWh per month (4kWp system)
Knocknaheeny at a Glance
| Area Data | Value |
|---|---|
| Population | 500 (Census 2022) |
| Houses/Bungalows (Co. Cork avg.) | 83% of dwellings |
| Owner-Occupied (Co. Cork avg.) | 56% |
| Built Before 2000 (Co. Cork avg.) | 73% |
| Avg. Rooms per Home (Co. Cork avg.) | 5.3 |
| Elevation | 138 metres |
| Eircode Area | T12 |
| Dist. to Cork City | 2.1 km |
| Location | Inland |
| Coordinates | 51.9085°N, 8.5024°W |
Population and housing data: CSO Census 2022. Weather data: Met Eireann (Cork Airport, 6.9 km).
Weather & Climate in Knocknaheeny
Weather data from Met Eireann (Cork Airport station, 6.9 km from Knocknaheeny). 5-year average (2019–2023).
Solar Suitability in Knocknaheeny
Across Co. Cork, 83% of dwellings are houses or bungalows, making the area highly suited for rooftop solar panels. 56% of homes are owner-occupied — homeowners can apply directly for the SEAI grant. 73% of homes were built before 2000, qualifying for the SEAI solar grant (homes built and occupied before 2021 are eligible).
Going Solar in Knocknaheeny
Knocknaheeny is a small town in Co. Cork with a population of 500 (CSO Census 2022). It is conveniently close to Cork City (2.1 km), where most SEAI-registered installers in the county are based. The Eircode routing key for Knocknaheeny is T12. You'll need your full Eircode when applying for the SEAI grant. Across the wider Cork area, 83% of dwellings are houses or bungalows and 56% are owner-occupied (Census 2022). Homeowners in Knocknaheeny with a south, east, or west-facing roof are well positioned for solar panels. Based on satellite data for this location, a 4kWp solar system generates approximately 3,272 kWh per year (818 kWh/kWp). The area has higher rainfall (1319 mm/yr), with a mean temperature of 10.4°C.
Solar panel benefits in Knocknaheeny, Cork
Save on Electricity Bills
Homeowners in Knocknaheeny can save an estimated €982+ per year on electricity with a 4kWp solar system generating 3,628 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. Cork ranks #6 in Ireland for solar yield with 907 kWh/kWp. Homes in Knocknaheeny benefit from some of the best solar conditions in the country.
25+ Year Lifespan
A system installed in Knocknaheeny today will generate clean electricity for 25-30 years with minimal maintenance.
Knocknaheeny SEAI solar PV grant details
Homeowners in Knocknaheeny, Co. Cork 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 Cork
SEAI registered solar panel installers covering Cork.
Top Rated Solar Installers Near Knocknaheeny
Read verified reviews from solar panel installers serving Knocknaheeny, Co. Cork.
Where can you find solar installers near Knocknaheeny?
Also serving nearby areas in Cork:
Find Solar Installers in Cork
Browse SEAI-registered installers covering Knocknaheeny and all of Cork.
Solar Panel FAQs for Knocknaheeny
How much do solar panels cost in Knocknaheeny?
A 4kWp system in Knocknaheeny 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 3,628 kWh/year, paying for itself in 4-6 years.
Do I need a smart meter for solar panels?
You need a smart meter to sell surplus electricity back to the grid. ESB Networks installs smart meters for free. Your installer submits the NC6 form to ESB Networks after installation, which triggers the meter upgrade if needed.
Do solar panels work in winter in Cork?
Yes, solar panels generate electricity all year round. While output is lower in winter, Cork still receives usable daylight hours even in December. Annual generation figures (3,628 kWh for a 4kWp system) already account for seasonal variation.
Do I need to clean my solar panels?
In most cases, rain keeps solar panels clean enough in Ireland. If your panels are near trees or at a low angle, an annual clean may improve output by 2-5%. Never use abrasive materials. A soft brush and water is sufficient.
What maintenance do solar panels need?
Solar panels need very little maintenance. Rain keeps them clean in most cases. There are no moving parts. Your inverter may need replacing once in 25 years (10-15 year lifespan). Annual visual checks and occasional cleaning if near trees is all that's needed.
What is a BER assessment and do I need one?
A Building Energy Rating (BER) assessment is required after installing solar panels to claim the SEAI grant. A BER assessor visits your home and rates its energy efficiency from A1 to G. Solar panels typically improve your BER by 1-2 grades. The assessment costs around €150-€200.
Are solar panels worth it in Knocknaheeny?
Yes. With estimated savings of €982+ per year, the €1,800 SEAI grant, 0% VAT, and export income of 15-25c/kWh, a solar system in Knocknaheeny pays for itself in 4-6 years and lasts 25+ years.
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
Get a Free Solar Quote in Knocknaheeny
Connect with SEAI-registered installers covering Knocknaheeny, Co. Cork.