Here are the top issues with solar panels according to experts

Solar panel manufacturers promise industry-leading quality standards for their manufacturing processes. However, it is not uncommon for some solar panels to run into problems. Learn here about the 5 common issues with solar panels.

Internal Corrosion Due To Moisture

  • The solar panels consist of several components such as glass, EVA, solar cells, and the backsheet. If these components are not assembled to be air and water-tight, some moisture might penetrate through. Another reason for moisture getting inside the panels is faulty lamination.

Internal corrosion degrades the electrical components inside the solar panel. This degradation will result in a decrease in efficiency as well as a short-circuit. If this issue is not identified and fixed soon, the entire solar panel will become unusable.

Solar Inverter Issues

  • issues with solar panelsThe electricity generated by the solar panels is direct current (DC) whereas the electricity supplied by the utility grid is alternating current (AC). The majority of our electrical appliances are only compatible with AC. To fix this compatibility issue, a solar inverter is used that converts DC into AC.

Solar inverters are not cheap, and they don’t have a long life either. While solar panels can work at the same efficiency for 30 years, solar inverters start degrading anytime between 5 – 15 years. This degradation is visible as poor output current and voltage. Solar inverters cannot be repaired. It is advisable to get them recycled and replaced.


  • Micro-cracks can appear in the solar panels for a variety of reasons, and may not be noticeable until a thorough visual and performance inspection is carried out. These reasons include solar module production issues, poor handling of solar panels, improper packing and loading of solar panels, and installation by an uncertified professional.

Solar cells are installed in a series circuit inside the solar panel, so a micro-crack in one cell will affect the entire module. This results in about 2-3% lower performance than expected. Micro-cracks can’t be repaired and the solar panel will have to be replaced. It is advisable to check with your manufacturer for their warranty policy.


  • An improper welding connection between the solar cell and the bus bar causes problems for the solar panel. This bad connection at first causes high resistance, which leads to a short circuit. The area where the bad connection is present is known as a hot spot.

Hot spots not only damage the solar panel’s components such as EVA and backsheet, but they also decrease its output performance. The high resistance, as mentioned above, might cause a fire and permanently damage the solar panels. Hot spots cannot be fixed and the solar panel has to be replaced.

Snail-Trail Contamination

Snail trails are brown lines that might show up on a solar panel. One of the major reasons for a snail trail to form is a defective silver paste. Silver paste is used in the assembly and manufacture of solar panels. This defect causes moisture to seep through inside and results in oxidation. Micro-cracks may also result in snail trails in the solar panel.

Snail trails don’t usually form until a few years have passed since the panel has been installed. Snail trails cause performance issues and result in permanent damage. As snail trails can’t be repaired, the solar panel has to be replaced.

Each year millions of solar panels and components end up in landfills causing pollution and irreversible damage to the environment. If you are looking for an environmentally sustainable way to get rid of your solar panels, then get in touch with PV2 Recycle today. We are one of the best solar panel recycling service providers. Contact us today at for more information.

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