Frequently Asked Questions

1. How does solar energy work in Ireland’s climate?

Solar panels generate electricity from daylight, not just direct sunlight. Even on cloudy days, Ireland gets enough daylight to make solar a worthwhile investment.

2. Do solar panels work on cloudy or rainy days?

Yes. While output is lower on cloudy days compared to sunny ones, solar panels still produce energy as long as there is daylight.

3. What’s the difference between solar PV and solar thermal?

Solar PV (photovoltaic) panels generate electricity, while solar thermal panels heat water. PV is more versatile, powering everything from lights to appliances.

4. How long do solar panels last?

Most panels last 25–30 years or more. They come with performance warranties, typically guaranteeing at least 80% efficiency after 25 years.

5. How much maintenance do solar panels require?

Very little. Solar panels are durable and self-cleaning in Ireland’s climate. An occasional visual check or professional inspection keeps them in top shape.

6. How much does a typical solar panel installation cost in Ireland? 

Costs vary based on system size, but an average home installation ranges from €6,000 to €12,000 before grants.

7. What grants or incentives are available for solar in Ireland?

The SEAI (Sustainable Energy Authority of Ireland) offers grants for solar PV installations — up to €1800 as of 2025. 

7a) Am I eligible? 

In Ireland, homeowners and private landlords of dwellings built and occupied before 31st December 2020 are eligible for the Solar PV Grant. The grant is available for homes that have not previously received funding for Solar PV under the same Meter Point Reference Number (MPRN). To be eligible, the installation must be carried out by a SEAI-registered contractor.  

7b) How do I apply for a grant? 

To apply for a solar panel grant in Ireland, you'll need to first find a registered SEAI Solar PV company to install your panels and then apply for the grant online through the Sustainable Energy Authority of Ireland (SEAI) website. Approval is needed before installation begins, and you have eight months to complete the works after approval.  

8. How much can I save on my electricity bill with solar panels?

Savings depend on your usage and system size, but most homes save 30–50% on electricity bills annually. 

9. How long does it take to see a return on investment? 

Typically, between 7–10 years, depending on your energy usage and available grants. 
 

10. How long does it take to install solar panels?

Most home installations take just 1–2 days, depending on system size and roof access.

11. Will solar panels damage my roof?

No. When installed by professionals, solar panels can even protect your roof from weather damage.

12. What is the best orientation for solar panels in Ireland?

South-facing roofs are ideal, but east- or west-facing roofs also work well for spreading energy generation throughout the day.

13. Do I need planning permission for solar panels in Ireland?

Generally, no — domestic solar installations are exempt, provided they meet certain size and placement criteria.

14. Can I add more panels or batteries later on?

Yes! Systems are scalable, so you can expand your solar setup as your needs grow.
 

15. Do I need a battery storage system with my solar panels?

Not necessarily, but batteries help you store excess energy for use at night or during power cuts, increasing your independence from the grid.

16. How much battery storage do I need?

It depends on your energy use. Most homes benefit from a 5-10kW battery, but we’ll help you size it properly.

17. Can I sell excess electricity back to the grid in Ireland?

Yes. Under the Clean Export Guarantee (CEG), you can receive payment for surplus energy you export to the grid.

17a) What is Microgeneration?

In Ireland, microgeneration is the small-scale generation of electricity from renewable sources by individuals, small businesses, and communities.  Microgeneration allows users to produce their own electricity, potentially reducing their reliance on the national grid and contributing to a cleaner energy system.

17 b) How can I avail of Microgeneration?

To avail of microgeneration in Ireland, you need to install a renewable energy system like solar PV and then inform ESB Networks by completing an NC6 or NC7 form. You'll also need to ensure you have a smart meter installed and connect with your electricity supplier to arrange for payments for the excess energy you export to the grid. 

17c) What rate will I get paid?

In Ireland, the Clean Export Guarantee (CEG) scheme pays microgenerators a rate of 19.5 cents per kWh for excess electricity exported to the grid, as of 2025. Electric Ireland, SSE Airtricity, and other suppliers offer this rate, with payments made on a regular basis (e.g., quarterly). 

17d) How does the microgeneration payment work?

Your energy supplier will pay you for each kWh of electricity you export to the grid. The payment rate depends on your supplier. 

You'll typically receive credit on your electricity bill for the exported electricity, either on your regular bill or a separate statement. 

Individuals who sell electricity back to the grid may be eligible for a yearly tax exemption of €400 on the income earned. 

18. What happens if the battery runs out?

If your battery is empty, your home will automatically draw power from the grid to keep everything running.

19. How much will solar panels reduce my carbon footprint?

A typical home solar system can cut your carbon emissions by 1–2 tonnes per year.

20. Are solar panels recyclable?

Yes! Solar panels are made of recyclable materials like glass, aluminium, and silicon.

21. Is solar energy really a sustainable choice for Ireland?

Absolutely. Solar complements Ireland’s growing renewable energy mix and helps reducereliance on fossil fuels.

22. What warranties come with solar panels and batteries?

BYD Energy panels come with a 25-30 year performance warranty, and our batteries have a warranty of 8 years.

23. What happens if something goes wrong with my system?

Your installer provides ongoing support, and warranty protections cover defects or faults.

24. Will my system work during a power outage?

If you have a battery and backup setup, yes. Without a battery, your system will shut off for safety during outages.

25. Can I monitor my solar energy production?

Yes! Most systems come with apps that let you track energy generation, usage, and battery storage in real-time.

26. What happens on days when I generate more electricity than I use?

Excess energy is stored in your battery or exported to the grid, earning you credit under the Clean Export Guarantee.

27. Can solar panels increase my home’s value?

Yes. Energy-efficient homes are attractive to buyers, and solar can boost your property’s value and market appeal.

28. Do I need planning permission to install solar panels?

In most cases, installing solar panels on a home in Ireland does not require planning permission. However, there are exceptions, particularly for listed buildings or properties within Architectural Conservation Areas (ACAs). 

29. Will there be any disruption during the installation of my solar battery?

Yes, there will likely be some disruption during the installation of your solar battery in Ireland, though it's typically minimal. The main disruption will be associated with the electrical work and the placement of the battery itself, often near the main electrical distribution board. 

30. Is good quality broadband required?

Yes, a good quality broadband connection is beneficial for solar panels in Ireland, especially if you want to monitor your system's performance remotely.