Can Rain Damage Solar Panels?

Solar panels are bound to experience rain, but how well will they hold up against the water? Here is a helpful guide for you to learn more.

A solar panel requires unobstructed sunlight to capture the most energy, but its position also exposes them to rain. If you live in Hawaii—which often experiences heavy rainfall in the winter—and want to install this device, you may wonder how it will react to water. Here is a helpful guide to resolve any concerns preventing you from switching to an alternative energy system.

Solar Panel Properties

Solar panels contain chemical compounds and materials that convert light into storable energy. They rely on silicon photovoltaic cells. These react with sunlight and release electrons, generating electricity. This energy can then be stored in solar backup batteries and used in your home. Cells are sandwiched between two clean encapsulant sheets for protection. On top of the encapsulant is a glass sheet and durable aluminum frame to hold everything together. A junction box and backsheet are below the panel so the device can attach to your roofing.

Thanks to their innovative design, solar panels are essentially waterproof. Many can endure heavy rain exposure for 30 years before repairs are needed. The thick glass sheet defends against flying debris and impacts during a storm, and the metal frame keeps this protective layer in place. All seams get sealed with a powerful waterproof adhesive, and the inner encapsulants provide added defense in case rainwater passes through.

How to Protect Panels From Rain

Although a panel is designed to withstand rain, there are a few preventative measures you can take to protect it from the elements. The sealing in the device can deteriorate over time, so regularly check it to verify whether it’s in top condition. Yearly solar panel inspections will also ensure the weatherproofing components aren’t eroded or damaged. If the professionals find any minor issues that need addressing, they will provide repairs to keep the device functional.

Another essential maintenance step is trimming back tree branches. Broken limbs and twigs can fall and rake against the panels, leaving behind scratches and dents. These damages impair the device’s ability to capture sunlight and reduce its effectiveness.

If you’re interested in adding solar panels to your home, contact Holu Hou Energy in Honolulu, HI. Providing panels and solar battery backup systems to residents throughout the state since 2019, they are committed to sustainable energy. They’re also proud to offer no-money-down, flexible solar financing solutions, so call (808) 371-7514 to speak with a staff member.