The reporter recently learned from the Institute of Electrical Engineering of the Chinese Academy of Sciences that after five years of technical research and engineering construction, the first supercritical carbon dioxide photothermal generator set was successfully developed. The third-party test results show that the power generation and thermal power conversion efficiency of the generator set fully meet the requirements of the project task book. It is reported that the generator set is developed with the support of the "Key Basic Issues Research on Supercritical Carbon Dioxide Solar Thermal Power Generation" project. The project has recently passed the performance evaluation organized by the National Natural Science Foundation of China. After 5 hours of defense and expert questioning, the expert group highly praised the project and recommended its promotion and implementation. In recent years, China's solar thermal power generation industry has shown a vigorous development trend, but the cost reduction of solar thermal power generation is not as expected. Supercritical carbon dioxide solar thermal power generation technology, as the most promising low-cost, high-efficiency, and highly flexible technology, has received widespread attention from global research institutions and industries. However, the core equipment used in supercritical carbon dioxide solar thermal power generation technology, such as high-temperature particle heat absorbers and supercritical carbon dioxide generator sets, are still in the research and exploration stage worldwide Wang Zhifeng, project leader and researcher of Institute of Electrical Engineering, Chinese Academy of Sciences, said. Over the past five years, the project team has focused on engineering design, organically integrating basic theoretical research, technical equipment development, and system integration, actively promoting scientific research and empirical engineering construction. We have overcome the design and manufacturing challenges of core equipment such as solar high-temperature particle heat absorption, fluidized bed particle/carbon dioxide heat exchange, and 200 kilowatt level supercritical carbon dioxide power generation units. We have taken the lead in achieving the operation of supercritical carbon dioxide solar thermal power generation systems worldwide, including high coke concentration fields, particle heat absorbers, particle/supercritical carbon dioxide heat exchangers, supercritical carbon dioxide compressor turbine units, and high-speed motors Wang Zhifeng said that the project will effectively promote the development of "low-cost high efficiency high flexibility" solar thermal technology in China, and provide technical support for the construction of new energy bases in China. (New Society)