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LG Solar Blogs


How Long Do Solar Panels Last?


Solar panels are designed to withstand heat, rain, sleet or snow. In fact, high-quality solar panels can last up to 50 years or longer in all-weather conditions. You may want to replace them before then, as all solar panels naturally diminish in performance over time, but rest assured this process happens very slowly. Let's take a look at the top reasons why solar panels stop working.

Natural Degradation

High-quality solar panels are built to last through freezing and thawing, scorching heat and windy debris. They will even stand up to neighborhood critters, such as lizards, squirrels or birds, walking across them or nesting underneath them. As the decades pass, normal wear and tear, including abrasion, corrosion and overheating, can add up and cause cracks to form and the panel to no longer work. Luckily, in most cases, if a panel stops working, the remaining panels in your array will not be affected.

Installation Quality

Occasionally, solar panel installers cut corners and don't closely follow the manufacturer's instructions for installation. They may damage the operation of the panels with faulty wiring and activation set-up, poor mounting on the roof rack or careless delivery and unpacking. Some installers are not experts in the product you have chosen. Remember to contact the manufacturer first before deciding on a local installer. The manufacturer can recommend professional and reliable installers in your local area. 

Quality of Panels

Some inexpensive panels may not produce as much energy as their high-quality counterparts, and they may not last as long. High-quality solar panels are built to last over decades and are backed by a trusted manufacturer's warranty that will protect your long-term investment. 

High quality panels that are properly installed, can last decades with minimal maintenance. Once your panels are installed your job is to relax, and let the sun love your home!