Industry Overview - As of the end of February, the total installed power generation capacity in the country reached 3.95 billion kilowatts, representing a year-on-year increase of 15.9%. Solar power capacity reached 1.23 billion kilowatts, up 33.2%, while wind power capacity reached 650 million kilowatts, increasing by 22.8% [2] Domestic News - The National Mine Safety Supervision Bureau announced a list of 19 coal mines that have achieved the first-level standard of safety production standardization management system, which will be publicly disclosed for social supervision [3] Technological Advancements - A significant breakthrough in the field of new thin-film photovoltaics has been achieved, with the photoelectric conversion efficiency of copper-zinc-tin-sulfur-selenium batteries certified at 16.6%, marking the 10th world record in this field [5] - The first dual-power intelligent tamping machine for railway tunnels in the country has been launched, featuring a dual-power system that allows seamless switching based on operational scenarios [6] - The first "all-round" flash welding rail machine in the country has been officially put into use, integrating new energy power and all-scenario operations [6] Corporate News - Huaneng International Power Co., Ltd. reported a net profit of 14.41 billion yuan for 2025, a year-on-year increase of 42.17%. The company's revenue was 229.288 billion yuan, a decrease of 6.62% [8] - The first successful ignition of the 630℃ national power demonstration project boiler at Datang Yuncheng marks the start of the dynamic trial operation phase [8]

Core Viewpoint - The research team led by researcher You Jingbi from the Chinese Academy of Sciences has developed a perovskite solar cell prototype with a photoelectric conversion efficiency of 27.2% [1] Group 1: Efficiency and Performance - The solar cell maintains 86.3% of its initial efficiency after running for 1529 hours under standard sunlight and maximum power output conditions [1] - Under accelerated aging conditions with standard sunlight and 85°C thermal coupling, the device retains 82.8% of its initial efficiency after 1000 hours of operation [1] Group 2: Publication and Recognition - The research findings have been published in the international academic journal "Science" [1]