The blades of wind turbines have twist angles and the surface is a three-dimensional curved surface. It is difficult to install battery panels and is dangerous during high-speed installation. And installing things on it will affect the balance of rotation.
Furthermore, the efficiency of wind power generation is much higher than that of solar power, so why do we need to install solar power?
However, solar power plants can be installed on the ground of wind farms to increase the land utilization area