Project Introduction: Solar photovoltaic and thermal integration not only effectively reduces the temperature of photovoltaic modules, improving the efficiency of light-generated electricity, but also produces thermal energy, thereby greatly enhancing the conversion efficiency of solar energy. However, the temperature of the thermal product is limited by the permissible temperature of the photovoltaic cells, generally below 60°C. Additionally, due to the low energy flux density of sunlight and the large area required for photovoltaic cells, the cost of solar energy utilization systems is relatively high. Commonly used concentrating technologies reduce the amount of photovoltaic cells or heat collectors needed, thus lowering costs, but because of the optical characteristics of the concentrating units themselves, there is a significant distance between them and the sunlight receiving units, resulting in larger system volumes. This is not conducive to the wind resistance of solar systems and is also difficult for home users with limited daylight areas to accept. This project aims to develop a compact concentrated photovoltaic and thermal integrated module to reduce the volume of the photovoltaic thermal integrated module. And it can switch between the optical and photothermal units according to the energy needs of different seasons. For example, in summer, it can be switched to a photovoltaic unit, which generates electricity while producing low-temperature heat at 40-50°C for household use; in winter, due to the lower temperature, it can be switched to a thermal unit for extensive photothermal conversion, with the generated thermal energy being used for heating. Current application situation and prospects: This project is suitable for regions with abundant solar resources, and ordinary household users or industrial enterprise users who have both electricity and thermal energy needs can achieve energy saving, cost reduction, and reduced energy consumption through the application of this technology. In addition, the modules developed by this project have high integration performance, making them convenient for production, transportation, installation, and use.