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What are the benefits and drawbacks of having solar panels?

Solar panels have become increasingly popular in recent years as a cheap way to generate energy. More and more people are opting for them as a way to reduce their energy bills while also increasing the value of their homes. It's good for the environment, too. But there are also some downsides. Below is an overview of the main benefits and drawbacks of solar panels to help you make an informed decision.

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Benefits of having solar panels

You save on your energy bills

Solar panels enable you to generate your own electricity. This means you will need to buy less energy from the grid, which in turn will significantly lower your energy bill. For many households, this translates into savings of hundreds of euros a year. From the moment your solar panels are installed, you immediately start saving on your energy costs.

According to the Flemish energy regulator, on average you consume 36% of the electricity you generate straight away. Unconsumed energy is fed into the grid in exchange for payment from your energy supplier. This is known as the injection tariff or feed-in tariff. It should be mentioned that this tariff is usually not very high, so it’s more beneficial to use the energy you generate right away.

For many people, reducing their energy costs is the biggest reason for having solar panels installed.

The value of your home increases

Solar panels are a renewable source of energy. They improve the EPC rating of your home, which in turn boosts the value of your property. Potential buyers are more interested in houses with solar panels, due to the fact that they have low energy costs and require less (or no) renovation to meet government EPC standards. This makes homes with solar panels very attractive on the property market.

You have more independence from energy suppliers

This benefit is partly linked to the savings on your energy costs. Having solar panels not only reduces your energy bills, but also gives you some protection from sudden price increases in the energy market.

We have seen in the recent past that energy prices can skyrocket due to external factors such as wars and inflation. If you generate your own energy, you are less affected by such events.

If you also have electric heating in your home, or you have an electric car or are planning to buy one, this could be a major reason to go for solar panels.

Purchase and installation is becoming cheaper

Technological advances and economies of scale mean that the cost of buying and installing solar panels is falling, making the initial investment less of an obstacle. This makes it financially feasible for more and more people to install solar panels.

It’s good for the environment

Solar energy is a renewable resource, meaning it doesn’t become depleted like fossil fuels. Having solar panels reduces your emissions of CO2 and greenhouse gases, enabling you to contribute to a better environment.

Solar panels also typically lead to an improvement in your home’s EPC rating. So if you’re planning to make energy-efficient renovations to your home, installing solar panels or a home battery (or both) is a smart investment.

Drawbacks of solar panels

The initial investment

Although solar panels have become cheaper in recent years, making them more financially accessible to more people, their purchase and installation is still a major expense. Depending on your energy consumption and the cost of your solar panels, it can take several years to recoup your investment.

KBC Mobile offers a simple way to work out how much you could save with solar panels and how much your installation will cost. That enables you to see what the payback period is.

You are dependent on sunlight

Having solar panels might make you less dependent on energy suppliers, but the downside is that you are dependent on sunlight. The amount of energy you produce will be lower on cloudy days and in the winter months. In addition, the location of your property also matters. Buildings, trees or other obstacles can cast shadows on your panels and reduce their efficiency.

You can maximise you savings by using electricity when your solar panels are producing energy. You can adapt your use of your electrical appliances accordingly, but this is obviously not feasible for everyone.

You can also install more solar panels to capture more sunlight. Installing a home battery as well allows your generated energy to be stored for use at a later time. A home battery allows you to store electricity for several hours or even days.

You need to have enough space on your roof

Another drawback of solar panels is that they have certain technical requirements. For example, you must have enough space on your roof to install a solar panel system that generates enough electricity for your energy needs.

Good to know: you need around 2 sq.m. for each panel. You need at least four solar panels for your installation to be profitable.

Maintenance and repairs

Although solar panels are relatively low-maintenance, they do need occasional cleaning to maintain their maximum efficiency. If they get damaged or become defective, repairs may be needed, which may entail additional costs.

Less suited to certain house styles

Some people feel that solar panels do not match the style of their house. While this is a matter of personal preference, it may be a consideration.

As you can see, solar panels have both benefits and drawbacks. Consider these pros and cons in relation to your own specific situation to help you make an informed choice.

The additional ‘Solar panels and battery’ service in KBC Mobile lets you work out the estimated yield and cost of your solar panels. If you are interested, you can obtain a no-obligation quote from a reliable contractor from the network of our partner ‘Impact us today’. They will contact you within five business days to set up an appointment.

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FAQs

A complete solar panel installation typically costs an average of 3 500 to 5 700 euros, including installation costs and excluding VAT. The exact cost of your solar panels depends on factors such as the type of installation and the number of panels, while the number of panels you install depends on your energy consumption.

Read more about the price of solar panels

A typical household consumes about 3 500 kWh of energy per year. If you install panels with a maximum power output (watt peak, Wp) of 400 Wp and want to allow for future changes such as an electric car or a heat pump, you should ideally install between 10 and 12 solar panels.

Read more about the number of solar panels

To calculate the yield of solar panels, you need to consider factors such as the power of the panels, the location of your home and the orientation of your roof.

According to official figures from the Flemish energy regulator, an average household with solar panels installed takes 36% less energy from the grid. This means that, on average, you immediately consume 36% of the electricity your solar panels produce. This can save you hundreds of euros on your annual energy bill.

Of course, you have to weigh that 36% against the amount of energy your solar panels will generate.

Read more about the yield of solar panels

Solar panels generally last 25 to 30 years. Several factors can affect their lifespan:

  • The quality of the panels
  • Correct and professional installation
  • Regular maintenance
  • Environmental factors, such as areas with a lot of snow or very warm temperatures

The price of solar panels may have come down, but they are still a major expense. At KBC, you can apply for an energy loan and pay a lower rate than you would for our other loans. Find out more. Remember, borrowing money also costs money.

The KBC Energy Loan is an instalment loan. Lender: KBC Bank NV, Havenlaan 2, 1080 Brussels, VAT BE 0462.920.226, RLP Brussels, FSMA 026256 A. Subject to your loan application being approved by KBC Bank NV.