The distance of the solar panel bracket depends on a number of factors, including the size and weight of the solar panel used and the design of the bracket system. In general, the distance between the brackets should be reasonably arranged according to the size and weight of the solar panel to ensure that the brackets can provide adequate support and stability.

Normally, the distance between solar panel brackets can be determined based on the physical size of the solar panels. It is generally recommended to leave appropriate spacing in the horizontal direction so that each solar panel can be easily accessed during installation and maintenance.

In addition, local climatic conditions and wind load requirements should also be considered. If an area often has harsh weather conditions such as strong winds or storms, then the distance between adjacent solar panel brackets may need to be more compact to increase the stability and wind resistance of the entire system.

The optimal bracket spacing usually requires engineering evaluation and design on a case-by-case basis. If you are planning to install a solar panel system, it is recommended to consult a professional solar installation company or engineer who can provide you with accurate advice based on your specific needs and local conditions.