国家“十四五”规划重大工程，我国在建海拔最高双曲拱坝电站 叶巴滩水电站首批机组投产发电

Core Insights - The Yebatan Hydropower Station, with a total installed capacity of 2.24 million kilowatts, is the largest hydropower station in the upper reaches of the Jinsha River in the Sichuan-Tibet section [2] - The first batch of units was officially put into operation on December 27, marking a significant milestone in China's "14th Five-Year Plan" major projects [2] - The project is expected to generate an average annual power output of over 10.2 billion kilowatt-hours, contributing to the clean energy supply in Central China [2][4] Project Overview - The construction of the hydropower station took over 20 years, starting from site selection in 2004, with approval for construction in 2016 and the first batch of units being operational in 2023 [3] - The project faced challenges such as complex geological structures and high ground stress, with a maximum of 37.6 MPa, and experienced two natural disasters during construction [3] - Technological breakthroughs were achieved, including the construction of the highest double-arch dam in high-altitude areas and the first full-dam flood discharge layout in a super-high arch dam with a discharge capacity exceeding 10,000 cubic meters per second [3][4] Environmental Impact - Once fully operational, the station is projected to save approximately 3.1 million tons of standard coal annually and reduce carbon dioxide emissions by over 8.3 million tons [4] - The clean energy generated will be transmitted to Central China through the ±800 kV ultra-high voltage direct current transmission project, significantly enhancing regional power supply security [4]