The number of solar panels needed in Ireland depends on your household's energy usage, roof space, and local weather. On average, a three-bedroom home may need 10–14 solar panels. A standard 4kW solar PV system typically contains 13–18 panels.
Irish homes use around 4,200 kWh per year. Sunlight hours range from 1,100-1,600 per year across the country.
A professional survey is strongly advised. It allows for accurate solar system sizing based on roof orientation, dimensions, and available light. These steps help you generate enough electricity and reduce your energy bills effectively.
If you're wondering how many solar panels do I need in Ireland, this guide will help you calculate a tailored answer.
Use our solar panel calculator to estimate your system size. It considers daily energy consumption, roof orientation, and sunlight hours.
Once submitted, our team will contact you with guidance and a personalised recommendation.
Ireland's solar market is growing. Over 60,000 homes now have rooftop PV systems. This trend aligns with the Climate Action Plan, which targets 70% renewable electricity by 2030.
Check your utility bills to determine annual kWh usage. Most Irish homes consume about 4,200 kWh/year.
A 4kW system requires roughly 20–28 square metres. Consider shading, chimneys, or skylights that reduce usable area.
South-facing roofs receive the most direct sunlight. East and west-facing roofs still work but may yield slightly lower output.
Ireland gets between 1,100 and 1,600 sunlight hours annually. Homes in the west generally receive less than homes in the southeast.
Higher wattage panels generate more electricity per panel. This can reduce how many solar panels you need if your roof space is limited.
To calculate how many solar panels you need:
Result: Approx. 10–14 panels
Each system varies based on household energy usage and roof space.
Grants from the Sustainable Energy Authority of Ireland (SEAI) reduce upfront costs.
Homeowners can apply for a grant of up to €2,400.
Other schemes like the Renewable Electricity Feed-In Tariff (REFIT) help offset energy costs.
A solar battery stores excess electricity for use during the night or outages. While optional, it boosts your energy independence and reduces grid reliance.
Grants may cover part of battery storage costs.
Using an SEAI-registered installer ensures:
With tech advancements and falling panel prices, solar PV adoption is rising. Expect:
Ireland’s goal for 70% renewable electricity by 2030 depends on wide solar uptake.
Solar PV panels offer a clean, cost-effective, and reliable way to produce electricity in Ireland. Whether you’re curious about how many panels you’ll need or ready to install a solar panel system, use tools like a panel calculator and get expert advice.
For tailored recommendations and grant support, speak to a qualified installer at Solar Path today.