Solar Panels in Knockvicar, Co. Roscommon
Knockvicar is a village in Co. Roscommon with a population of around 400. Located 41.4 km from Roscommon, the area has a solar yield of 747 kWh/kWp. A 4kWp solar system generates approximately 2,988 kWh annually, saving an estimated €896+ per year. The SEAI grant of up to €1,800 and 0% VAT bring the net cost to €3,200–€6,200.
Solar energy output for Knockvicar, Co. Roscommon
| Solar Metric | Value |
|---|---|
| Solar Yield | 747 kWh/kWp |
| 4kWp System Output | 2,988 kWh/yr |
| Sunshine Hours | 1,200 hrs/yr |
| Est. Annual Savings | €896+ |
| Household Coverage | 71% of avg use |
Solar yield calculated for Knockvicar (54.00°N, 8.19°W) using PVGIS satellite data. Actual output varies by roof orientation, shading, and system specification.
Monthly Solar Output in Knockvicar
kWh per month (4kWp system)
Knockvicar at a Glance
| Area Data | Value |
|---|---|
| Population | 400 (Census 2022) |
| Elevation | 44 metres |
| Eircode Area | F52 |
| Dist. to Roscommon | 41.4 km |
| Location | Inland |
| Coordinates | 53.9992°N, 8.1945°W |
Population and housing data: CSO Census 2022. Weather data: Met Eireann (Markree, 25.9 km).
Weather & Climate in Knockvicar
Weather data from Met Eireann (Markree station, 25.9 km from Knockvicar). 5-year average (2019–2023).
Knockvicar: Local Solar Energy Profile
Knockvicar is a village in Co. Roscommon with a population of 400 (CSO Census 2022). It is accessible from Roscommon (41.4 km), where most SEAI-registered installers in the county are based. The Eircode routing key for Knockvicar is F52. You'll need your full Eircode when applying for the SEAI grant. Based on satellite data for this location, a 4kWp solar system generates approximately 2,988 kWh per year (747 kWh/kWp). The area has higher rainfall (1332 mm/yr), with a mean temperature of 9.8°C.
How solar panels pay off in Knockvicar
Save on Electricity Bills
Homeowners in Knockvicar can save an estimated €896+ per year on electricity with a 4kWp solar system generating 3,468 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.
Energy Independence
For homes in rural Knockvicar, solar panels provide energy security and reduced reliance on the grid. Combined with a battery, you can store power for evening use.
25+ Year Lifespan
A system installed in Knockvicar today will generate clean electricity for 25-30 years with minimal maintenance.
What SEAI grants can Knockvicar homeowners claim?
Homeowners in Knockvicar, Co. Roscommon 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 Roscommon
SEAI registered solar panel installers covering Roscommon.
Top Rated Solar Installers Near Knockvicar
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Solar Panels in Areas Near Knockvicar
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Common Questions About Going Solar in Knockvicar
How much do solar panels cost in Knockvicar?
A 4kWp system in Knockvicar 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 3,468 kWh/year, paying for itself in 4-6 years.
Is my roof suitable for solar panels in Knockvicar?
Most roofs are suitable. You need at least 15-20 m² of unshaded roof space for a typical 4kWp system (10 panels). South, east, or west-facing roofs work well. Your installer will assess your roof's orientation, angle, and structural suitability during a site survey.
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 roof direction is best for solar panels in Knockvicar?
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.
What size solar system do I need for my home in Knockvicar?
Most homes in Knockvicar benefit from a 3-6 kWp system. A 4kWp system (10 panels) covers 71% of average household electricity use. Your installer will assess your roof space, orientation, and energy usage to recommend the optimal size.
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.
How long do solar panels last?
Modern solar panels are warrantied for 25-30 years and typically last even longer. Panel efficiency degrades by about 0.5% per year, so after 25 years, your panels will still produce around 87% of their original output. Inverters typically last 10-15 years and may need one replacement.
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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