Solar Panels in Derryharrow, Co. Longford
Derryharrow is a small town in Co. Longford with a population of around 500. Located 3.6 km from Longford, the area has a solar yield of 755 kWh/kWp. A 4kWp solar system generates approximately 3,020 kWh annually, saving an estimated €906+ per year. The SEAI grant of up to €1,800 and 0% VAT bring the net cost to €3,200–€6,200.
How much solar energy can you generate in Derryharrow?
| Solar Metric | Value |
|---|---|
| Solar Yield | 755 kWh/kWp |
| 4kWp System Output | 3,020 kWh/yr |
| Sunshine Hours | 1,285 hrs/yr |
| Est. Annual Savings | €906+ |
| Household Coverage | 72% of avg use |
Solar yield calculated for Derryharrow (53.76°N, 7.77°W) using PVGIS satellite data. Actual output varies by roof orientation, shading, and system specification.
Monthly Solar Output in Derryharrow
kWh per month (4kWp system)
Derryharrow at a Glance
| Area Data | Value |
|---|---|
| Population | 500 (Census 2022) |
| Elevation | 51 metres |
| Eircode Area | N39 |
| Dist. to Longford | 3.6 km |
| Location | Inland |
| Coordinates | 53.7575°N, 7.7721°W |
Population and housing data: CSO Census 2022. Weather data: Met Eireann (Mt Dillon, 14.1 km).
Weather & Climate in Derryharrow
Weather data from Met Eireann (Mt Dillon station, 14.1 km from Derryharrow). 5-year average (2019–2023).
Derryharrow and Renewable Energy
Derryharrow is a small town in Co. Longford with a population of 500 (CSO Census 2022). It is conveniently close to Longford (3.6 km), where most SEAI-registered installers in the county are based. The Eircode routing key for Derryharrow is N39. 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 3,020 kWh per year (755 kWh/kWp). The area has moderate rainfall (1171 mm/yr), with a mean temperature of 9.9°C.
What Derryharrow homeowners gain from solar
Save on Electricity Bills
Homeowners in Derryharrow can save an estimated €906+ per year on electricity with a 4kWp solar system generating 3,416 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.
Increase Property Value
Solar panels improve your BER rating and can add up to 4% to your property value.
25+ Year Lifespan
A system installed in Derryharrow today will generate clean electricity for 25-30 years with minimal maintenance.
How to claim the SEAI grant in Derryharrow
Homeowners in Derryharrow, Co. Longford 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 Longford
SEAI registered solar panel installers covering Longford.
Top Rated Solar Installers Near Derryharrow
Read verified reviews from solar panel installers serving Derryharrow, Co. Longford.
Towns near Derryharrow for solar installation
Also serving nearby areas in Longford:
Find Solar Installers in Longford
Browse SEAI-registered installers covering Derryharrow and all of Longford.
Frequently Asked Questions About Solar Panels in Derryharrow
How much do solar panels cost in Derryharrow?
A 4kWp system in Derryharrow 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 3,416 kWh/year, paying for itself in 4-6 years.
Do solar panels work in winter in Longford?
Yes, solar panels generate electricity all year round. While output is lower in winter, Longford still receives usable daylight hours even in December. Annual generation figures (3,416 kWh for a 4kWp system) already account for seasonal variation.
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).
Can I sell excess solar electricity?
Yes. Under Ireland's Microgeneration Support Scheme, you sell surplus electricity at 15-25c/kWh. You need a smart meter (ESB Networks installs free). The first €400/year of export income is tax-free.
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 get solar panels on an east or west facing roof in Derryharrow?
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 is the payback period for solar panels in Derryharrow?
With a net cost of €3,200-€6,200 after the SEAI grant and savings of €906+ per year plus export income, a typical solar system in Derryharrow pays for itself in 4-6 years. After payback, you get 20+ years of near-free electricity.
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 Derryharrow
Connect with SEAI-registered installers covering Derryharrow, Co. Longford.