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 949 kWh/kWp. A 4kWp solar system generates approximately 3,796 kWh annually, saving an estimated €1139+ per year. The SEAI grant of up to €1,800 and 0% VAT bring the net cost to €6,500–€7,200.
Knockboy solar irradiance and generation figures
| Solar Metric | Value |
|---|---|
| Solar Yield | 949 kWh/kWp |
| 4kWp System Output | 3,796 kWh/yr |
| Sunshine Hours | 1,465 hrs/yr |
| Est. Annual Savings | €1139+ |
| Household Coverage | 90% of avg use |
Based on county-level solar data for Waterford. Actual output varies by roof orientation, shading, and system specification.
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. The area receives around 1,465 sunshine hours annually, allowing a 4kWp solar system to generate approximately 3,796 kWh per year. 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 €1139+ per year on electricity with a 4kWp solar system generating 3,796 kWh annually.
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 claim up to €1,800 from the SEAI solar PV grant (2026). Combined with 0% VAT, the net cost of a 4kWp system is typically€6,500–€7,200.
312 SEAI-registered solar installers serve Knockboy, Co. Waterford. Compare installers in Waterford or read verified reviews.
Solar Installers Serving Knockboy
SEAI registered solar panel installers covering Knockboy, Co. Waterford.
Energysmart Renewables Limited
carlow, cavan, clare +23 more
David O'Mahoney Electrical Services Ltd
carlow, cavan, clare +23 more
Maher Electric Ltd
kilkenny, tipperary, waterford
Top Rated Solar Installers Near Knockboy
Read verified reviews from solar panel installers serving Knockboy, Co. Waterford.
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Knockboy solar panel questions answered
How much do solar panels cost in Knockboy?
A 4.4 kWp system in Knockboy typically costs €8,300–€9,000 before grants. After the €1,800 SEAI grant and 0% VAT, the net cost is €6,500–€7,200. 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 90% 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 €1139+ 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.
Can you go off-grid with solar in Knockboy?
Fully off-grid setups are rare in Knockboy. Most homes stay grid-connected and sell surplus back through the Microgeneration Support Scheme. A hybrid inverter with 10-20 kWh of battery storage covers evenings and power cuts, which is what most people searching "off-grid" actually want. A true off-grid system needs a much larger array and battery bank, and you lose the grant-supported export income.
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: September 2026
Fact-checked by John Rooney, Solar Energy Editor. Editorial policy
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