Photovoltaic efficiency of solar panels

The efficiency of solar panels in South Africa, as in any location, can vary based on several factors. These factors might include the type of solar panels, their quality, the amount of sunlight received, and the technology used. On average, standard photovoltaic (PV) solar panels typically have an efficiency ranging from 15% to 22%. This means they can convert 15% to 22% of the sunlight that hits them into electricity. The efficiency of our solar panels peak at 20,5%, which is indeed quite decent. We would like to give you an insight into the efficiency of solar panels.

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The efficiency of solar panels

How do we measure solar panel efficiency?
To give you a better insight into the efficiency of solar panels, we are happy to take you back to the place where the solar process starts: the factories. Here, engineers are working every day to design, manufacture and optimise solar panels. After production, the solar panels are tested in laboratories for, among other things, efficiency. Based on historical data and by following strict guidelines, the efficiency of solar panels is guaranteed.

It’s important to note that the efficiency of solar panels tends to decrease with time, and it can be affected by factors such as dust, dirt, shading, and temperature. Regular maintenance and cleaning can help mitigate some of these efficiency losses.


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    Efficiency of solar panels in South Africa

    In South Africa, which receives a substantial amount of sunlight, solar panels have the potential to perform very well. However, the actual efficiency you can achieve for your solar panel system depends on various factors:

    ✓ Location: The amount of sunlight and solar radiation your location receives is a key determinant of solar panel efficiency. South Africa generally has a favorable climate for solar energy.

    ✓ Quality of Panels: High-quality solar panels tend to have higher efficiency ratings. Investing in better panels can lead to improved performance.

    ✓ Orientation and Tilt: The angle and orientation of your solar panels also impact their efficiency. Ensuring that they are properly oriented toward the sun can maximize energy production.

    ✓ Shading: Shading from nearby structures, trees, or other obstructions can significantly reduce efficiency. Minimizing shading is crucial for optimal performance.

    ✓ Technology Advances: Technological advancements and improvements in solar panel design can result in more efficient panels. Newer, more advanced panels may offer higher efficiency levels.

    At Soly, we would be happy to tell you more about the importance of getting the right return from solar panels. Because no matter how you look at it, the return ultimately determines how much money you will make with solar panels.

    Want to know your solar panel efficiency?

    It’s advisable to consult with a solar installation expert in South Africa to assess your specific location, energy needs, and the most suitable solar panel options for your situation. Now you are here! We can help you choose a system that offers the best balance of efficiency and cost-effectiveness. At Soly, this is all integrated into our Solarcheck. This is a free online configurator, in which you can calculate the savings and benefits from solar panels. And because we base our data specifically on your location, we are also able to make an accurate prediction on the efficiency of solar panels in your location.


    Knowledge base

    While you're here, you might want to delve further into the solar market. And we have good news! Our knowledge base is packed with exciting information on all things solar. We have already selected three articles for you.
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    A Complete Guide to Registration, Financing, and Tax Benefits for Your Solar System
    Let's explore these key aspects, especially relevant for residents of Cape Town.
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    South African Region’s Year-Round Sunshine
    According to the South African Department of Energy, the majority of areas in South Africa enjoy over 2,500 hours of annual sunshine.
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    How many solar panels do I need?
    Ideally, you want to install just enough solar panels to "cover" your annual power consumption. So, let's have a look.
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    Step-by-step guide on how to sell excess energy back to the City of Cape Town
    Are you a Cape Town resident with a grid-tied solar PV system, and wondering what to do with the surplus electricity it generates?