Solar Panels in Knockboy, Co. Waterford
Knockboy is a village in Co. Waterford with a population of around 400. Located 51.6 km from Waterford, the area has a solar yield of 806 kWh/kWp. A 4kWp solar system generates approximately 3,224 kWh annually, saving an estimated €967+ per year. The SEAI grant of up to €1,800 and 0% VAT bring the net cost to €3,200–€6,200.
Knockboy solar irradiance and generation figures
| Solar Metric | Value |
|---|---|
| Solar Yield | 806 kWh/kWp |
| 4kWp System Output | 3,224 kWh/yr |
| Sunshine Hours | 1,465 hrs/yr |
| Est. Annual Savings | €967+ |
| Household Coverage | 77% of avg use |
Solar yield calculated for Knockboy (52.20°N, 7.86°W) using PVGIS satellite data. Actual output varies by roof orientation, shading, and system specification.
Monthly Solar Output in Knockboy
kWh per month (4kWp system)
Knockboy at a Glance
| Area Data | Value |
|---|---|
| Population | 400 (Census 2022) |
| Houses/Bungalows (Co. Waterford avg.) | 86% of dwellings |
| Owner-Occupied (Co. Waterford avg.) | 52% |
| Built Before 2000 (Co. Waterford avg.) | 68% |
| Avg. Rooms per Home (Co. Waterford avg.) | 5 |
| Elevation | 330 metres |
| Eircode Area | E21 |
| Dist. to Waterford | 51.6 km |
| Location | Inland |
| Coordinates | 52.1986°N, 7.8606°W |
Population and housing data: CSO Census 2022. Weather data: Met Eireann (Moore Park, 27.8 km).
Weather & Climate in Knockboy
Weather data from Met Eireann (Moore Park station, 27.8 km from Knockboy). 5-year average (2019–2023).
Solar Suitability in Knockboy
Across Co. Waterford, 86% of dwellings are houses or bungalows, making the area highly suited for rooftop solar panels. 52% of homes are owner-occupied — homeowners can apply directly for the SEAI grant. 68% of homes were built before 2000, qualifying for the SEAI solar grant (homes built and occupied before 2021 are eligible).
Renewable Energy Potential in Knockboy
Knockboy is a village in Co. Waterford with a population of 400 (CSO Census 2022). It is located away from Waterford (51.6 km), where most SEAI-registered installers in the county are based. At an elevation of 330 metres, installations in Knockboy should consider potential wind exposure when planning panel mounting. The Eircode routing key for Knockboy is E21. You'll need your full Eircode when applying for the SEAI grant. Across the wider Waterford area, 86% of dwellings are houses or bungalows and 52% are owner-occupied (Census 2022). Homeowners in Knockboy 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 3,224 kWh per year (806 kWh/kWp). The area has moderate rainfall (1104 mm/yr), with a mean temperature of 10.6°C.
Why Go Solar in Knockboy?
Save on Electricity Bills
Homeowners in Knockboy can save an estimated €967+ per year on electricity with a 4kWp solar system generating 3,796 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. Waterford ranks #2 in Ireland for solar yield with 949 kWh/kWp. Homes in Knockboy benefit from some of the best solar conditions in the country.
25+ Year Lifespan
A system installed in Knockboy today will generate clean electricity for 25-30 years with minimal maintenance.
SEAI Solar Grant for Knockboy Residents
Homeowners in Knockboy, Co. Waterford 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 Waterford
SEAI registered solar panel installers covering Waterford.
Top Rated Solar Installers Near Knockboy
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Knockboy solar panel questions answered
How much do solar panels cost in Knockboy?
A 4kWp system in Knockboy 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 3,796 kWh/year, paying for itself in 4-6 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.
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.
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.
What happens to my solar panels if I move house in Knockboy?
Solar panels stay with the property as a permanent fixture. They add value to your home for the next buyer. The SEAI grant does not need to be repaid if you sell. Your installer can transfer monitoring accounts to the new owner.
How much electricity will solar panels generate in Knockboy?
Based on Waterford county data, a 4kWp system in Knockboy generates approximately 3,796 kWh per year, covering 77% of average household use (4,200 kWh/year). Waterford receives around 1,465 sunshine hours annually.
Are solar panels worth it in Knockboy?
Yes. With estimated savings of €967+ per year, the €1,800 SEAI grant, 0% VAT, and export income of 15-25c/kWh, a solar system in Knockboy 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
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