Solar Panels in Knocknahur, Co. Sligo
Knocknahur is a coastal small town in Co. Sligo with a population of around 500. Located 5.4 km from Sligo, the area has a solar yield of 734 kWh/kWp. A 4kWp solar system generates approximately 2,936 kWh annually, saving an estimated €881+ per year. The SEAI grant of up to €1,800 and 0% VAT bring the net cost to €3,200–€6,200.
What is the solar potential in Knocknahur?
| Solar Metric | Value |
|---|---|
| Solar Yield | 734 kWh/kWp |
| 4kWp System Output | 2,936 kWh/yr |
| Sunshine Hours | 1,150 hrs/yr |
| Est. Annual Savings | €881+ |
| Household Coverage | 70% of avg use |
Solar yield calculated for Knocknahur (54.24°N, 8.54°W) using PVGIS satellite data. Actual output varies by roof orientation, shading, and system specification.
Monthly Solar Output in Knocknahur
kWh per month (4kWp system)
Knocknahur at a Glance
| Area Data | Value |
|---|---|
| Population | 500 (Census 2022) |
| Elevation | 38 metres |
| Eircode Area | F91 |
| Dist. to Sligo | 5.4 km |
| Location | Coastal |
| Coordinates | 54.2450°N, 8.5386°W |
Population and housing data: CSO Census 2022. Weather data: Met Eireann (Markree, 9.5 km).
Weather & Climate in Knocknahur
Weather data from Met Eireann (Markree station, 9.5 km from Knocknahur). 5-year average (2019–2023).
Solar Power in Knocknahur, Co. Sligo
Knocknahur is a small town in Co. Sligo with a population of 500 (CSO Census 2022). It is conveniently close to Sligo (5.4 km), where most SEAI-registered installers in the county are based. Knocknahur's coastal position means good exposure to sunlight, though installations should account for higher wind loads and salt air. The Eircode routing key for Knocknahur is F91. 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 2,936 kWh per year (734 kWh/kWp). The area has higher rainfall (1332 mm/yr), with a mean temperature of 9.8°C.
Advantages of Solar Energy for Knocknahur Homeowners
Save on Electricity Bills
Homeowners in Knocknahur can save an estimated €881+ per year on electricity with a 4kWp solar system generating 3,388 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
Knocknahur'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 Knocknahur today will generate clean electricity for 25-30 years with minimal maintenance.
Solar grants available in Knocknahur
Homeowners in Knocknahur, Co. Sligo 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 Sligo
SEAI registered solar panel installers covering Sligo.
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Your solar questions for Knocknahur
How much do solar panels cost in Knocknahur?
A 4kWp system in Knocknahur 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 3,388 kWh/year, paying for itself in 4-6 years.
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).
How does shading affect solar panels in Knocknahur?
Shading from trees, chimneys, or nearby buildings can reduce output significantly. Modern systems use optimisers or microinverters so that shading on one panel doesn't drag down the whole system. Your installer will assess shading during the site survey.
Can I get solar panels on an east or west facing roof in Knocknahur?
Yes. East or west-facing roofs still produce 80-85% of the output of a south-facing roof. Many installers recommend splitting panels across east and west to spread generation throughout the day, which can actually improve self-consumption.
What size solar system do I need for my home in Knocknahur?
Most homes in Knocknahur benefit from a 3-6 kWp system. A 4kWp system (10 panels) covers 70% of average household electricity use. Your installer will assess your roof space, orientation, and energy usage to recommend the optimal size.
What happens during a power cut?
Standard grid-tied solar systems shut down during a power cut for safety reasons (to protect ESB workers). If you need backup power, you can install a hybrid inverter with battery storage that provides power during outages.
Is my roof suitable for solar panels in Knocknahur?
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.
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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