At Droneview.be, we regularly inspect older solar panel installations to detect defects and efficiency losses. However, we recently encountered an unexpected issue at a client’s site: a brand-new installation from November 2024 had three panels with faulty cells. This proves that testing is not only essential for older systems but also for new installations.

Defects in new panels: how is this possible?

Although you’d expect new solar panels to work flawlessly, defects can occur during manufacturing, transport, or installation. The three defective panels in this installation had damaged cells, which can lead to:

Reduced energy output: A single defective panel can negatively impact the entire string’s performance.
Higher internal resistance and heat buildup: This can shorten the panel’s lifespan and pose safety risks.
Potential warranty issues: If defects are not detected in time, claiming warranty replacements can become more complicated.

Continue reading “Why new solar panel installations should also be tested”

Solar panels have a long lifespan, but after around 15 years, defects may start to occur that reduce the efficiency of your installation. Especially if your solar panels are receiving green certificates, it is essential to monitor the output and detect defects in a timely manner. This is particularly important for systems that will still be eligible for certificates in the next five years, as the output of defective panels affects the number of certificates you can claim.

The Impact of Defects on Output

Solar panels that are 15 years old often show defects such as damaged cells or faulty diodes. These defects can cause one or more panels to no longer function optimally, which lowers the output of the entire string. This loss can be significant, especially in older installations, which means that fewer green certificates will be received, resulting in lower income from these certificates.

Why an Inspection is Essential

A regular inspection can detect these defects and help maximize the output of the installation. By identifying the losses, necessary repairs or replacements can be made. This prevents further reduction in output and ensures that you can still benefit from the full value of your green certificates.

Continue reading “Green Certificates for Solar Panels: The Importance of Regular Inspections for Older Installations”