PV solar panels have a characteristic that the higher the temperature, the lower the power generation of the photovoltaic panels. At the same time, if the local temperature of the solar panels is too high, hot spots will occur, which will affect the life of the photovoltaic panels. The inside of the solar panel are all electronic components that generate heat when they work, and the increase in temperature has a great impact on the performance of the main components of the solar panel. Because the solar panel will stop working if the temperature is too high,

    Therefore, photovoltaic panels, like other electronic devices, have higher operating efficiency at lower temperatures. Since photovoltaic power generation uses light rather than heat, photovoltaic panels are more suitable for sunny and cool working environments. For rooftop solar panels, natural ventilation cooling is an economical and practical method. For example, when installing, leave a certain gap between the roof surface and the panel, and avoid sundries such as leaves entering the gap, so as to prevent the temperature from being too high due to poor airflow. This is why many photovoltaic power plants are regularly cleaned to ensure smooth ventilation of the solar panels.

    Sunlight is electromagnetic radiation with a wide range of wavelengths. When irradiated on a photovoltaic panel, the radiation may be reflected, absorbed, or directly passed through, and only the absorbed part of the radiation can be converted into electricity. For silicon semiconductors, unabsorbed radiation is lost as heat. Of course, there are other heat-generating factors that can affect the efficiency of power generation, and the consequence is that these factors work together to heat the photovoltaic panels, making them warmer than the ambient temperature. In either case, we need to pay attention to the effect of high temperature on the efficient conversion of solar panels.