There are various methods to extend the lifespan of solar panels, and the following are some effective suggestions:

Regular cleaning: The surface of solar panels should be kept clean to ensure optimal light absorption. Bird droppings, fallen leaves, dust, and other substances may block sunlight and reduce the efficiency of solar panels. Generally speaking, cleaning a few times a year is sufficient, but in areas with high levels of dust or frequent bird activity, more frequent cleaning may be necessary.

Avoid shadows: Try to ensure that the installation location of the solar panel receives sufficient sunlight for most of the day. If there are shadows on the solar panel, it can cause reverse current flow, which may cause the panel to overheat and shorten its service life.  

Appropriate tilt angle: Ensure that the solar panel receives sunlight at the optimal angle. The selection of angle should consider the latitude of the installation location and the solar angle in different seasons of the year.

Regular maintenance and inspection: Regularly inspect the solar panels and other components of the system (such as inverters, batteries, and wires) for damage or wear. If any problems are found, they should be repaired in a timely manner.

Install protective facilities: Avoid solar panels being blown by the wind or hit by hail, tree branches, and other objects. Consider installing protective facilities such as fences or obstructions.  

High quality installation: Ensure the use of qualified professionals for installation to avoid damage caused by improper installation.

Reasonable use: Do not overload solar panels, as this may cause them to overheat and shorten their lifespan.

The above steps can help extend the service life of solar panels and improve the overall efficiency of solar energy systems.