Curious about solar energy and thinking, “How much does a 20 kWh solar system cost in Ireland?” You’re not the only one. With energy prices on the rise and sustainability becoming more important, many homeowners are making the switch.
Let’s break down the costs and what you can expect.
What is the Price of a 20 kWh Solar System in Ireland?
If you’re considering a 20 kWh solar system for your home or business in Ireland, you can expect to pay somewhere between €20,000 and €40,000.
That’s quite a range, right? The final price depends on several factors, including the type and quality of the solar panels, whether you choose to add battery storage, the complexity of your roof or installation site, and the experience and reputation of your installer.
While the initial investment is significant, remember that this is an investment that will pay off in several ways.
What is Included in the Price?
When you go solar, it’s not just the panels you’re paying for. A complete solar setup includes several key components:
1. Solar Panels

These are the most important part of the system. For a 20 kWh system, you’ll need around 50–60 panels, depending on their efficiency.
2. Inverters
Inverters convert solar power into electricity your home can use.
- String inverters: Typically cost between €1,000–€2,000.
- Microinverters/Optimisers: These are higher-performing but cost between €1,200–€2,600.
3. Battery Storage
If you want to store energy for later use (for evenings or power cuts), adding battery storage is a good idea. A typical 13.5 kWh home battery system costs around €8,000 to €10,000, fully installed.
4. Mounting & Structural Supports
Depending on your roof type, you’ll pay between €1,000–€3,000 for racking systems to secure the panels.
5. Labour & Installation
Professional installation is crucial for safety and efficiency. Labour costs typically range from €2,000–€5,000. This includes:
- Site assessment
- System design
- Mounting & wiring
- System testing & connection

6. Monitoring Software
Most systems come with apps or software so you can track how much energy you’re generating and using in real-time.
What About Government Grants?
Good news—there are grants to help lower the cost.
SEAI Solar PV Grant
The SEAI Solar PV Grant is available for homeowners, offering up to €1,800 off your solar panel installation.
- €700 per kWp for the first 2 kWp
- €200 per kWp for the next 2 kWp (up to 4 kWp)
Battery Storage Grant
- You can receive €600 for adding battery storage.
VAT & Tax Relief
While not direct grants, VAT reductions and tax relief can also lower your overall costs.
These incentives can reduce the cost of your solar system especially if you’re going for the higher-end options.
How Much Can You Save on Your Energy Bills?
One of the biggest benefits of solar energy is how much you can save on your electricity bills.
Most Irish homeowners with a 20 kWh system see their electricity bills drop by 50% to 70%. Your savings depend on:
- Your household’s energy use
- How much sunlight your roof gets
- Whether you have battery storage
- The efficiency of your system
Over time, these savings really add up, helping you pay off the system within 6 to 10 years. And if energy prices keep rising, it could happen even faster!
Why Solar Energy is More Than Just Saving Money?
Solar energy isn’t just about saving money. Here are some other great reasons to go solar:
1. Energy Independence
Generate your own electricity and reduce your reliance on energy companies.
2. Increased Property Value
Homes with solar panels are more attractive to buyers and can sell faster or at higher prices.
3. Environmental Impact
Solar energy is clean and renewable, helping you lower your carbon footprint perfect for anyone looking to live a more sustainable life.
4. Sell Back to the Grid
Under the Micro-generation Support Scheme, you can sell any extra energy back to the grid, which could even turn your roof into a small income stream.
Total Estimated Cost Before Grants
When you add up all the components, solar panels, inverters, batteries (if included), mounting, labour, and any extra equipment, the total cost of a 20 kWh solar system usually falls between €22,000 and €37,000.
Don’t forget that additional costs like roof upgrades or tree trimming may apply. It’s also a good idea to get quotes from multiple installers to find the best value.
Ready to Take the Next Step?
Get in touch with My Power today for a personalised solar quote and find out how you can start saving on energy costs while contributing to a greener future.
Visit My Power now!
Conclusion
To sum it up, How Much Does a 20 kWh Solar System Cost in Ireland? Typically, it ranges between €20,000 and €40,000, depending on the options you choose and your home’s specific needs. However, thanks to SEAI grants, battery incentives, and potential energy savings, the real cost could be significantly lower over time.
If you’re looking to reduce your electricity bills, achieve greater energy independence, and invest in a more sustainable future, a 20 kWh solar system could be the perfect choice.


