How Many Solar Panels Do I Need Ireland

Concept of How Many Solar Panels Do I Need Ireland

Figuring out the number of solar panels you need in Ireland isn’t a one-size-fits-all answer – it’s like a tailored suit; it needs to fit your specific needs!

A research paper revealed that the Irish Government’s target is to finish 250,000 rooftop installations by 2030, which translates to approximately 1,800 installations per month.

However, one of the most common questions is, “How many solar panels do I need to power my property?” The answer to this question depends on several factors, including your energy consumption, the efficiency and output of the solar panels, the design and configuration of your solar panel system, and financial considerations.

Accurate calculations of these parameters can help determine the ideal number of panels for your needs, ensuring optimal energy production and the cost-effectiveness of your solar investment.

How Much Energy Are You Currently Using?

Electricity meter with euro cash

A typical Irish household’s average electricity consumption is around 4,200 kilowatt-hours (kWh) per year. To offset this amount, you would need a solar panel system with approximately 4 kilowatts (kW) capacity.

A solar power system array of 10 panels, each with an average size of 400 watts, would meet the electricity demands of a family living in a three-bedroom house. The total system size required would be 4 kW.

Furthermore, A 4 kW solar panel system typically consists of 12-16 panels and covers an area of approximately 28-40 square meters. However, the number of panels and the area required may vary depending on the installed solar energy system efficiency, the angle of the roof, and the amount of sunlight the roof receives.

We recommend you use a smart meter to ascertain the electricity your appliances consume, hourly or daily.

How Much Roof Space Do You Have?

The size of your roof plays a significant role in determining the number of solar panels you need in Ireland, regardless of your budget. If you have an average-sized house that requires a 4 kW solar panel system, you would need a minimum of 28 square meters of roof space.

Even if your roof appears spacious enough, you must consider potential obstacles, such as skylights and vents, that may limit your solar system placement options.

However, don’t be discouraged if you have a smaller roof, as smaller solar panel systems can still be a good option. Smaller systems tend to have less waste than larger ones, resulting in a lossless or waste-free system that allows for the full self-consumption of energy generated.

This not only feels good but also presents a great investment opportunity. So, it is crucial to assess how much roof space you have before deciding on the number of solar panels you require for your property.

Solar Panel Types and Panel Wattage

Types of solar panels

Solar panels come in different types and wattages. The most common types of solar PV panels are monocrystalline, polycrystalline, and thin film. Monocrystalline panels are the most efficient and expensive, followed by polycrystalline panels, while thin-film panels are the least efficient and cheapest.

The wattage of a solar panel refers to the amount of power it can generate. Generally, solar panels have a wattage ranging from 100 to 400 watts per panel, with the average size being 300 to 350 watts. The higher the wattage, the more power a panel can produce.

When choosing the type and wattage of solar panels, you must consider your specific needs, the size of your property, and your budget to ensure the solar panels work effectively. Monocrystalline panels are best for small rooftops with limited space, while polycrystalline and thin-film panels are suitable for larger rooftops.

Higher-wattage panels may be more expensive, but they can generate more power, benefiting homes with higher energy demands.

What About Solar Batteries?

When determining the number of solar panels needed in Ireland, it may be worth considering the additional cost of installing a solar battery system. While solar batteries can provide many benefits, they can also be expensive.

Although solar battery systems in Ireland can be expensive, costing between €1,500 to €4,000, it’s important to consider the potential long-term savings in energy costs they can provide.

The initial cost of installing a solar battery system may be offset by the money saved on energy bills over time, making it a worthwhile investment for many homeowners and businesses.

Furthermore, we recommend you check the size and capacity of the solar battery system. This will depend on the energy needs of the household or business and the amount of excess energy generated by the solar panels.

A professional installer can help determine the appropriate size and capacity of the solar battery system to meet energy needs and reduce electricity bills.

It’s also worth noting that the amount of sunlight in Ireland can vary significantly depending on the location, time of year, and weather conditions.

As a result, it’s important to consider the average sunlight hours in the area when calculating the energy generation of the solar panels and determining the number of panels needed.

How Many Solar Panels Do You Actually Need in Ireland

Concept of calculating number of solar panels

One approach to calculating the number of solar panels needed is to determine the amount of energy consumed by the household or business daily. This information can be obtained by reviewing past energy bills or using an online energy consumption calculator.

Next, it’s essential to consider the amount of sunlight available in the area. While Ireland may not have the ideal weather conditions for solar energy production, a significant amount of sunlight is available throughout the year. Ireland’s average annual sunlight hours can range from around 1,000 to 1,500, depending on the location.

For example, Let’s say a household in Dublin has an average daily energy consumption of 20 kilowatt-hours (kWh). The home also has a roof area of 50 square meters available for solar panel installation.

Based on the average annual sunlight hours in Dublin of around 1,300 hours per year, a professional solar installer may estimate that a single 300-watt solar panel can generate around 1.3 kWh of solar electricity per day.

To determine the number of solar panels needed, the installer can divide the daily energy consumption of 20 kWh by the estimated energy generation per panel of 1.3 kWh, resulting in approximately 15.4 panels.

However, since solar panels are typically sold in whole units, the installer may recommend installing either 15 or 16 panels, depending on the system’s budget and energy needs.

It’s important to note that this is just an example, and the actual number of solar panels needed will vary depending on the household or business’s specific energy needs and available roof area, as well as other factors such as solar panel efficiency and local regulations.

Energy Consumption Assessment

In Ireland, the average electricity usage for a household can vary depending on several factors, such as the number of occupants, the size of the property, and the type of appliances used.

According to the Commission for Regulation of Utilities, the average electricity usage for a household in Ireland is around 4,200 kWh per year.

For commercial properties, energy consumption can vary significantly depending on the size and type of business. For example, a small retail shop may consume less energy than a large office building or a manufacturing facility.

In these cases, a detailed energy audit may be necessary to determine the business’s energy needs accurately. It’s also important to consider seasonal variations in energy usage. In Ireland, energy usage tends to be higher during the winter months due to increased heating needs.

This can be especially true for commercial properties with higher heating requirements than residential ones. Understanding seasonal variations in energy usage can help with budgeting and planning for energy needs throughout the year.

System Design and Configuration

Architectural drawing of a house with solar panels

Once the energy needs of property in Ireland have been determined, the next step is designing a solar panel system to meet those needs. This involves considering factors such as available space, orientation and tilt angle of solar panels, and battery storage options.

The size and orientation of the roof space available for solar panel installation is an essential factor in determining the size and configuration of the solar panel system.

In Ireland, the optimal direction for solar panels is south-facing, as this direction receives the most sunlight throughout the day. However, solar panels can still be effective if installed facing east or west, as long as they receive sufficient sunlight.

The tilt angle of solar panels is also important to consider, as it affects the amount of sunlight the panels can capture. In Ireland, a tilt angle of around 30 degrees is recommended for solar panel installation. However, if the roof angle differs, a solar installer can adjust the panel mounting to optimize sunlight exposure.

Battery storage is another essential consideration in solar panel system design. While connecting a solar panel system directly to the grid is possible, adding battery storage can provide several benefits, such as energy independence for off-grid living and backup power during power outages.

When designing a solar panel system, working with a professional solar installer or energy consultant must ensure that the system is configured correctly and meets the property’s energy needs. The installer can also help obtain necessary permits and confirm that the system complies with local regulations.

Financial Considerations

Solar panels cost of installation in Ireland can vary depending on several factors, such as the size and complexity of the system, the type of panels used, and the labor cost. On average, the cost of installing a solar panel system in Ireland ranges from €5,000 to €10,000. However, the cost may be offset by the potential savings in energy costs over time.

The Irish government offers several incentives and grants for solar panel installations, such as the Better Energy Homes scheme and the SEAI Solar PV grant. This solar electricity grant will provide financial support for homeowners and businesses that install solar panels and can significantly reduce the upfront installation cost.

In addition to incentives and grants, solar panel installations can provide long-term savings on electricity bills. By generating their electricity from the sun, homeowners and businesses can reduce their dependence on grid-supplied electricity and save thousands of euros over the system’s lifespan.

It’s also worth noting that solar panel systems can increase the value of a property. According to a study by the Lawrence Berkeley National Laboratory, homes with solar panel systems sold for an average of 4.1% more than similar homes without solar panels.

Frequently Asked Questions

How Many Solar Panels Do I Need for a Family of 4?

The number of solar panels required for a family of 4 depends on several factors, including their energy consumption and the efficiency of the solar panels. However, on average, a typical home may need between 17 and 21 solar panels to generate enough electricity to meet its energy needs completely.

Is Solar Power Worth It in Ireland?

Yes, solar is worth it in Ireland and can provide several benefits including energy independence and potential savings on electricity bills.

How Much Does a 5KW Solar System Cost in Ireland?

On average, a 5kW solar system in Ireland can cost between €5,000 to €10,000

Is 5kW enough to run a house?

This depends on the house’s energy needs, but a 5kW solar system can provide a significant portion of a household’s electricity needs.

How Many Solar Panels Do I Need to Power a Refrigerator?

Powering an average refrigerator typically requires the energy generated by around three or four solar panels. In Ireland, an average refrigerator consumes about 57 kWh per month, and an average freezer uses 58 kWh.


As we wrap up this article, let’s take a moment to appreciate the sun’s power. By installing solar panels, you can save money on electricity bills, reduce your carbon footprint, and help create a cleaner, more sustainable future.

So, why not harness the sun’s energy and join the solar revolution? With the right number of solar panels and a little Irish luck, you’ll power your home with renewable energy in no time!

What Direction Should Solar Panels Face in Ireland

Concept of solar panel direction in Ireland

What direction solar panels should face in Ireland plays a crucial role in optimizing their energy production. Generally, panels should face toward the direction that gets the most sunlight throughout the day, typically south in the northern hemisphere.

However, the orientation can vary based on location factors, including roof angle, local climate, and potential shading.

Carefully considering these factors can ensure you maximize your solar installation’s efficiency and energy output.

What Direction Should Solar Panels Face in Ireland?

To achieve optimal solar energy production in Ireland, we recommend installing solar PV panels on a south-facing roof to ensure they receive maximum direct sunlight exposure.

Fortunately, recent changes in planning regulations have loosened the requirement for panel installation solely on the rear of a house.

As long as planning guidelines are followed and no more than 50% of the roof is covered with panels, they may be installed on any suitable location.

Understanding Solar Panel Direction In Ireland

Illustration of solar panel direction

The direction solar panels face plays a significant role in their ability to generate electricity. Solar panels facing the south generally produce the most energy in Ireland, receiving the most sunlight throughout the day.

Several factors affect the optimal direction for a solar power system in Ireland, including the location’s latitude, the climate, and shading from trees or other buildings.

For example, in areas closer to the equator, solar PV systems may perform better when facing toward the north. However, in Ireland, south-facing panels are generally the most effective due to the climate and latitude.

To calculate the ideal solar panel direction for your specific location in Ireland, you will need to consider these factors and the orientation of your roof.

Online solar calculators or consulting with a professional solar installer can also help determine the best direction for your solar panels.

South-Facing and East/West-Facing Panels – What You Need to Know

South-facing panels are typically the most efficient as they receive the most sunlight throughout the day. This is because Ireland is located in the Northern Hemisphere, and the sun’s position is generally in the Southern sky.

South-facing panels can produce and record up to 20% more electricity generated than east/west-facing panels. However, installing solar panels on a south-facing roof may not always be feasible due to the property’s orientation or shading from nearby trees or buildings.

On the other hand, East/west-facing PV solar panels may produce more energy during the morning (east-facing) or afternoon and evening (west-facing) when the sun is lower in the sky.

This can be beneficial for those who use more electricity during these times. East/west-facing panels may also be a good option for properties with limited space or where south-facing roof space is unavailable.

Both south-facing and east/west-facing solar panels have advantages and disadvantages in Ireland. Deciding which direction to install a solar PV system will depend on a range of factors unique to your property, such as available roof space and electricity usage patterns.

Tilt Angles for Solar Panels

Tilt Angles for Solar Panels

The tilt angle of solar panels plays an essential role in their ability to capture sunlight and produce electricity efficiently. This section will discuss the importance of tilt angle, determining the optimal angle for your solar panels, and the impact of seasonal changes on tilt angle.

The optimal tilt angle for solar panels varies depending on the location’s latitude, time of year, and the panel’s orientation. Generally, solar panels in Ireland are tilted at an angle between 30 and 40 degrees to maximize energy production throughout the year.

This angle ensures that the panels are exposed to the most sunlight possible while minimizing the impact of seasonal changes on energy production.

Seasonal changes can impact the optimal tilt angle for solar panels, as the sun’s position in the sky varies throughout the year. In Ireland, the sun is higher in the sky during the summer months, so a lower tilt angle may be more effective.

During winter, the sun is lower, so a higher tilt angle may be more effective. Adjusting the tilt angle of your solar panels seasonally can maximize energy production throughout the year.

Tracking Solar Panels

Solar panels with tracking system in the yard

This entails solar panels installed on a tracking system and following the sun’s movement throughout the day. This section will discuss the benefits and drawbacks of tracking solar panels, the types of tracking systems available, and whether tracking is worth the investment.

Tracking solar panels produces more electricity than fixed solar panels because they always point directly at the sun. This is the primary benefit of using tracking solar panels.

This means they can generate more energy throughout the day, especially in the morning and afternoon when the sun is not directly overhead. However, tracking systems are more complex and expensive than fixed solar panels, which can offset the increased energy production.

There are two main types of tracking systems available: single-axis and dual-axis. Single-axis tracking systems follow the sun’s movement from east to west, while dual-axis tracking systems also adjust the tilt of the panels to follow the sun’s elevation angle.

Dual-axis tracking systems can generate up to 45% more electricity than fixed solar panels, while single-axis tracking systems can generate up to 25% more electricity.

Whether tracking solar panels is worth the investment depends on your circumstances. If you have limited roof space and want to maximize energy production, tracking solar panels may be a good option.

However, tracking systems are more expensive and require more maintenance than fixed solar panels, which may make them less attractive for some homeowners or businesses.

Frequently Asked Questions

Why Face Solar Panels East-West?

East-west facing solar panels can produce a more consistent level of energy throughout the day, benefiting areas with a less sunny climate. However, they may produce less energy than south-facing panels in sunnier regions.

How Does a Solar Hot Water Heating System Work?

Solar hot water heating systems use solar panels to absorb sunlight and heat water, which is then stored in a tank for later use. This can be a cost-effective and environmentally friendly way to heat water in your home.

Do Solar Panels Work on Cloudy and Rainy Days?

Solar panels still produce some energy on cloudy and rainy days, but they reduce their output compared to sunny days. However, manufacturers design modern solar panels to be more efficient in low-light conditions.

What Makes My House Suitable for Solar Panels?

A suitable house for solar panels will have a south-facing or east-west-facing roof free from shading, with enough roof space to accommodate the panels needed to meet your energy needs and potentially increase your home value.

What are the Different Types of Solar Panel Technologies?

The main types of solar panel technologies include monocrystalline, polycrystalline, and thin-film. Each type has different efficiencies, costs, and appearances, so choosing the right technology for your needs is important.

Are Flogas Solar Systems Safe?

Flogas solar systems are safe and meet all necessary safety standards. Manufacturers design them to be durable, reliable, and efficient, and they also equip them with advanced monitoring systems to ensure optimal performance.


The direction solar PV panels face can significantly impact their energy production in Ireland. While people generally consider south-facing panels the best option, east/west-facing panels may also be viable in some cases.

Based on statistics provided by the ISEA, the deployment of 2GW of solar power in the country could generate more than 7,000 employment opportunities and meet 7% of the national electricity demand.

Additionally, the tilt angle of solar panels can also affect their performance. It is important to consider all these factors when deciding on the best solar panel direction for your home or business.

You can maximize energy production and reduce carbon footprint by choosing the optimal solar panel direction and tilt angle.

Do Solar Panels Increase Home Value? (2023 Guide)

Do Solar Panels Increase Home Value

The installation of solar panels can enhance the value of your home, factoring in elements such as the system’s size, the energy costs in your area, and the potential buyer’s perception of solar energy.

Understanding the dynamics of the real estate market and energy economics is essential when considering this form of renewable energy as an investment in your property’s worth.

Do Solar Panels Increase Home Value in Ireland?

In Ireland, a solar energy system in a home can generally increase its appeal and value. So basically, the answer to the question is “YES.”

The reason is that homeowners with solar panels can save money in the long run on their energy bills, making their homes more cost-effective and sustainable.

Therefore, solar panels can be a valuable investment for homeowners in Ireland looking to improve their property’s value while contributing to a greener environment.

How Solar Panels Can Increase Home Value in Ireland

Houses with solar panels

The National Renewable Energy Laboratory (NREL) has reported that for every dollar saved on electricity bills through solar panels, a home’s value can increase by $20. Additionally, Zillow has found that homes with solar panels sell for 4% higher prices than those without.

With Ireland’s increasing energy costs, homeowners constantly search for ways to reduce their energy expenses. Solar panels harness energy from the sun, which means homeowners with solar power can generate their electricity, reducing their reliance on grid power.

It can translate to significant savings on energy bills, which can be a lovely selling point for potential buyers.

Another reason is that solar panels can increase a home’s appeal. In today’s world, more and more people are looking for eco-friendly and sustainable options.

Homes with installed solar panels can appeal to potential buyers as they commit to environmental sustainability. A house with solar panels can also provide an aesthetic appeal, enhancing the home’s overall value.

Lastly, the increase in a home’s energy efficiency from installing solar panels can add value. Energy efficiency is crucial to a home’s value and can significantly impact energy bills.

A home with installed solar panels is deemed more energy-efficient and is, therefore, more valuable than a similar home without them.

Can Solar Panels Ever Decrease Home Value in Ireland?

While solar panels can increase the value of a home in Ireland, there are some scenarios where they can decrease home value.

One possible scenario is if the solar panel installation needs to be better designed or installed. A poorly installed or designed solar panel system can be unattractive and may not function effectively, leading to potential safety hazards. Such issues can affect the overall value of the home.

Another scenario is if the homeowner purchased or leased the solar panels and kept the terms private from potential buyers. Buyers may want to avoid taking on a solar panel contract or lease agreement, which decreases the home’s value.

Furthermore, if the solar panel system is outdated or no longer functional, it may negatively impact the home’s value. This is because potential buyers will consider the cost and hassle of removing and replacing the system, which could deter them from making an offer or lowering the price.

Finally, in some cases, solar panels may not fit the home’s design or location. For instance, if the house is in a heavily shaded area or the roof is not suitable for solar panel installation, solar panels may not be as effective, impacting their value.

7 Factors that Influence the Added Value of Solar Panels in Ireland

7 Factors that Influence the Added Value of Solar Panels in Ireland

The value added by solar panels to a home in Ireland can vary based on several factors. Here are some of the critical factors that can influence the added value of solar panels:

1. Energy Production

The amount of energy produced by the solar panel system can significantly influence the added value of a home. The more power the system can have, the higher the value it can add to a home.

2. Age of the System

The age of the solar panel system can also impact the added value. Older systems may not be as efficient as newer ones, leading to lower energy production and, consequently, lower added value.

3. Cost of Energy

The energy cost in Ireland is continually changing, which can affect solar panels’ value. The higher the energy costs, the more valuable the solar panels become, as they can provide significant cost savings over time.

4. Location

The geographical location of a home can have an impact on the value added by solar panels. Homes located in regions with higher levels of sunlight, such as the South-East of Ireland encompassing counties Carlow, Kilkenny, Tipperary, Waterford, and Wexford, are likely to generate more energy and add more value to the property.

5. Design and Aesthetics

The solar panel system’s design and aesthetics can also influence a home’s added value. A well-designed and aesthetically pleasing solar panel system can enhance the home’s value.

6. Maintenance

Regular maintenance and upkeep of the solar panel system can ensure it operates at peak efficiency, leading to higher energy production and added value.

7. Government Incentives

The availability of government incentives and grants for solar panel installations can impact the added value of a home.

Do Bigger Solar Panel Installations Increase Home Value in Ireland?

The size of a solar panel installation can play a vital role in adding to the home value of a home in Ireland. Generally, larger installations produce more energy with a larger solar battery, translating to higher cost savings and potentially more added value to the property.

However, the solar panel installation size should suit the home’s energy needs.

Depending on the type of solar panels installed, a large installation may not be cost-effective and may not add significant value to the property.

Do Homes with Solar Panels Sell Faster in Ireland?

House with solar panels and sold sign

Homes with solar systems in Ireland may sell faster than those without them. According to a National Renewable Energy Laboratory report, homes with solar systems spend less time on the market than those without.

This could be due to the increasing demand for sustainable and energy-efficient homes in Ireland. Additionally, the cost savings associated with owning a home with solar energy may be an attractive selling point for potential buyers.

However, it is essential to note that the market demand for solar installations in a specific area can also affect how quickly a home with solar panels sells. In areas where solar panels are less common or less popular, finding a buyer for a home with a solar panel system may take longer.

How Do Solar Panels Affect Property Taxes?

In Ireland, solar panels do not usually affect property taxes. People do not consider installing solar panels a significant home renovation or improvement that would warrant a reassessment of the property’s value for taxation purposes.

However, it is essential to note that the value added to a property by solar panels may affect the overall value of the property. That, in turn, can impact property taxes indirectly, as the value of a property is a crucial factor in determining property taxes.

In some cases, there may be tax incentives or rebates available for installing solar panels, which can offset the initial cost of the installation.

The Sustainable Energy Authority of Ireland (SEAI) offers grants for solar panels under their Better Energy Communities (BEC) and Better Energy Homes (BEH) schemes. These incentives vary depending on the location and type of solar panel system installed.

It is essential to consult with a tax professional or local government agency to understand the potential tax implications of installing solar panels on a property in Ireland.

Are Buyers Looking for Homes with Solar Panels In Ireland in 2023?

Yes, more and more buyers in Ireland are looking for homes with solar panels in 2023. With the growing concern for the environment and the increasing cost of energy bills, homeowners are looking for ways to reduce their carbon footprint and save money on energy costs.

Final Thoughts

Having solar panels installed on a property can be a significant selling point for potential buyers, as it offers an eco-friendly and cost-effective solution for generating electricity.

Additionally, homes with installed solar panels can offer a competitive edge in the real estate market, as they are in high demand and may sell faster than those without them.

Overall, investing in solar panels can add value to a property in multiple ways, including reducing energy costs, increasing appeal to eco-conscious buyers, and improving a home’s energy efficiency.

As the demand for sustainable and energy-efficient properties grows, homes with solar panels are becoming more attractive to potential buyers in Ireland.