The wind bearing capacity of solar brackets depends on various factors, including bracket design, materials, installation methods, and environmental conditions.

Normally, solar brackets undergo structural calculations and strength analysis to ensure they can withstand normal wind loads. The specific wind bearing capacity may vary depending on the actual situation.
  
Generally speaking, a standard solar bracket should be able to withstand the maximum design wind speed in the local area. The design wind speed is calculated based on local meteorological data and standard specifications. For example, the design wind speed in a certain region may be 25 meters per second or 30 meters per second.

In addition, the design of solar brackets usually takes into account other factors, such as the impact of extreme weather conditions such as earthquakes and ice and snow.
  
If you plan to install a solar bracket system, it is recommended to consult a professional solar system designer or supplier who can provide more detailed information and recommendations based on your specific situation.