BAVP (Building Attached PV), is a technology that installs a solar photovoltaic power generation system on the roof of an existing building. It not only has a photovoltaic power generation project but can also preserve the original building structure to the greatest extent. Advantages of BAPV Roof: There is no need to change the original roof structure. It is convenient to install and has a strong load-bearing capacity. The investment cost of some photovoltaic components is low. It has stronger heat preservation and insulation capabilities.