What are best practices for protecting solar panels during storms?

Mounting and Securing Solar Panels

When installing a marine solar system, it’s essential to use marine-grade hardware and follow the manufacturer’s mounting instructions. For boat applications, consider using stainless steel or corrosion-resistant aluminum components to prevent damage from saltwater exposure. Secure solar panels with adequate fastening systems, such as screws or clips, to prevent panel displacement during storms. A rule of thumb is to use a minimum of four mounting points per panel, spaced evenly to distribute the weight and stress of wind loads.

Storm Protection Screens

Flexible solar panels are more susceptible to damage from wind-borne debris and excessive rain. To mitigate this risk, consider adding storm protection screens around the solar array. These screens can be made from durable materials like stainless steel mesh or marine-grade nylon and should be designed to withstand wind speeds of at least 80 knots (93 mph). When selecting a screen, ensure it is compatible with the solar panel’s frame and can be easily installed and removed for maintenance.

Charge Controller and System Protection

In addition to securing the solar panels, it’s crucial to protect the charge controller and other system components from storm-related damage. Consider installing a surge protector or a lightning arrestor to prevent electrical surges from damaging the system. Also, ensure the charge controller is rated for marine environments and can handle the expected voltage and current fluctuations during storms. When selecting a charge controller, look for models with built-in protection features, such as overcharge and over-discharge protection, to safeguard the system and prevent damage.