阐述了光伏发电的意义,论述了光伏发电国内外发展的现状,重点讨论了现有光伏发电关键技术的优点和缺陷,分析了中国发展光伏发电的4个理由及其应用前景。-Expounds the significance of photovoltaic power generation, this paper discusses the current development of photovoltaic power generation at home and abroad, discusses the advantages and defects of existing photovoltaic key technology, analyzed the four reasons for the development of photovoltaic power generation in China and its application prospect.