How Much Does a 11kw Solar System Cost In Ireland?

by Liz Martin | Jul 23, 2025

Thinking about installing a 11kW solar system but unsure what it might cost? Many homeowners and business owners in Ireland are exploring solar to save on energy bills and reduce their carbon footprint. 

The 11kW solar system cost can vary widely depending on several factors, including panel quality, installation complexity, and the inclusion of extras like battery storage. Costs typically range between €10,000 and €25,000 before grants. Thankfully, government support such as SEAI funding can help offset initial expenses. Understanding these factors can help you plan your investment wisely. 

In this blog, we’ll cover what influences pricing, how much energy you can expect to produce, and whether an 11kW system is the right fit for you.

Let’s start!

Is an 11kW Solar System Worth It?

For homes with high energy usage or small business setups, an 11kW solar system can generate enough electricity to cover most annual needs. It offers good long-term savings and energy independence, especially when designed to match your daily usage.

While the initial investment may seem high, the long-term financial and environmental benefits often outweigh the cost. With the right setup, you could see a strong return within just a few years. Additionally, solar panels increase property value and reduce your carbon footprint. Overall, if your energy needs justify the system size and you plan to stay in the property long-term, an 11kW system is typically worth the cost.

How Much Does a 11kW Solar System Cost in Ireland?

If you’re exploring solar options for a medium to large household or a small business, an 11kW system could be a perfect fit. In Ireland, the 11kW solar system cost typically ranges from €10,000 to €25,000

Prices depend on panel brand, installation complexity, and optional features like battery storage. Government grants, such as those from SEAI, can help reduce the upfront cost. Understanding these elements will help you budget wisely and maximise your return on investment.

What Affects the Cost of an 11kW Solar System in Ireland?

Several factors influence how much you’ll pay for an 11kW solar system. Understanding these can help you plan your budget and choose the right setup for your property.

Quality and Brand

The quality and brand of solar panels play a big part in pricing. Well-known brands offer better durability and efficiency but usually come at a premium. Choosing a trusted name may cost more upfront but pays off in long-term performance and reliability.

Installation Complexity

The layout and condition of your roof, its tilt, and shading can impact how difficult the system is to install. More complex installations require more time and labour, increasing the overall cost. Homes with simple roof access usually enjoy lower fees.

Mounting System

mounting-system
How Much Does a 11kw Solar System Cost In Ireland? 4

The type of mounting system whether for roof, ground, or tracking setups also affects the total cost. Ground-mounted systems or those with tracking features tend to be pricier due to additional equipment and labour requirements.

Additional Components

Beyond the panels themselves, costs may rise due to added components like inverters, wiring, and monitoring systems. These parts are essential for a fully functioning solar system and can influence how efficiently your system performs over time.

Government Incentives and Policies

Grants and financial incentives from the Irish government, such as those from SEAI, can reduce your upfront spend. These supports make solar more affordable and lower the 11kW solar system cost overall for eligible homeowners.

Local Market Conditions

The cost of an 11kW system can vary depending on supply and demand in your area. Labour rates, installer availability, and competition among providers all play a role in the final price. Getting quotes from local experts can help you find the best deal.

Conclusion

An 11kW solar system is a solid choice for households with higher energy needs or small commercial setups. In Ireland, the cost typically ranges from €10,000 to €25,000, influenced by factors such as panel quality, installation complexity, and additional components like battery storage. Government grants and market conditions can help reduce the final price, making solar more accessible than ever.

If you’re ready to cut energy bills and invest in a greener future, contact SPV Energy today. Our expert team will guide you through every step from pricing to installation to ensure you get the most value from your solar investment.

Frequently Asked Questions

1. What is the cost of an 11 kW solar system in Ireland?

The cost generally ranges between €10,000 and €25,000, depending on panel quality, installation complexity, and battery storage options. Grant schemes, like those from SEAI, can reduce this upfront investment.

2. What factors influence the cost of an 11 kW solar system?

Costs depend on the brand and efficiency of panels, inverter type, mounting systems, wiring, labour for installation, and any additional components such as monitoring and mounts.

3. How much energy can an 11 kW solar system generate?

An 11 kW system can produce approximately 43–48 kWh daily (about 15,000–17,000 kWh annually), depending on sunlight conditions, panel orientation, and shading.

4. What maintenance does an 11 kW system require?

Maintenance is minimal: occasional panel cleaning, basic system checks, and periodic inverter diagnostics are usually sufficient. Most systems come with warranties of 20–30 years.

5. How quickly will my 11 kW solar investment pay off? 

Payback typically occurs within 5–8 years, depending on energy savings and incentives. SPV Energy provides precise ROI projections based on your electricity usage and grant eligibility.

6. How does SPV Energy simplify the installation process?

SPV Energy handles everything from site surveys and design to permits and full installation. We ensure that your 11 kW solar system is built to spec and performs efficiently from day one.

Contact SPV Energy Now!

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Meet Liz Martin

Meet Liz Martin

Author @ SPV energy

Liz Martin, owner of SPV Energy, is a trusted solar expert dedicated to providing sustainable energy solutions. He ensures top-quality projects that help homes and businesses save energy and reduce their carbon footprint.