Core Viewpoint - The Yalong River Lianghekou Pumped Storage Power Station, the largest mixed pumped storage project globally, has achieved significant construction milestones, paving the way for the establishment of a clean energy demonstration zone by 2028 and a water-wind-solar integrated base by 2035 [1][3][9]. Group 1: Project Milestones - The underground powerhouse excavation has been successfully completed, marking the end of the civil engineering phase and transitioning to the installation of electromechanical equipment [9]. - The first concrete pour for the dam of the Yagen No. 1 Hydropower Station has commenced, representing a critical step in the construction of this significant project [13][15]. Group 2: Technological Innovations - The project employs advanced construction techniques, including a smart construction management platform and innovative blasting methods, which have improved construction efficiency by over 30% and reduced labor intensity [5][7]. - The Yagen No. 1 Hydropower Station features a super-wide single-unit dam design that enhances seismic resistance, overcoming significant challenges in concrete pouring under harsh high-altitude conditions [11][13]. Group 3: Energy Production and Environmental Impact - Upon completion, the Lianghekou Pumped Storage Power Station is expected to generate approximately 1.4 billion kilowatt-hours of clean electricity annually, sufficient to power 600,000 households [9]. - The Yagen No. 1 Hydropower Station will produce around 1.15 billion kilowatt-hours of clean energy each year, contributing to significant reductions in coal consumption and CO2 emissions [15]. Group 4: Future Development Plans - The Yalong River basin aims to establish a water-wind-solar integrated base with a planned installed capacity of 78 million kilowatts, contributing to national carbon neutrality goals and energy structure optimization [16][20]. - The project is part of a broader initiative to enhance the region's energy capabilities, with expectations to exceed 40 million kilowatts of operational capacity by 2030 and complete the full 78 million kilowatt capacity by 2035 [20][21].

Core Insights - The Yalong River Two Rivers Mouth Pumped Storage Power Station in Sichuan Province has achieved two critical engineering milestones: the successful completion of underground excavation and the first concrete pouring of the dam at the Yagen Level I Hydropower Station [1][3] Group 1: Project Milestones - The underground powerhouse, which is the core hub of the hydropower station, has been excavated to a depth of approximately 500 meters, with a total length of nearly 200 meters and a maximum depth of 650 meters [3] - The completion of the underground powerhouse marks the end of the civil engineering excavation phase, transitioning the project into the electromechanical equipment installation phase [3] Group 2: Energy Production and Efficiency - The Two Rivers Mouth Pumped Storage Power Station, utilizing the largest reservoir in Sichuan Province, is expected to provide 1.4 billion kilowatt-hours of clean electricity annually [1] - The Yagen Level I Hydropower Station, with a total installed capacity of 300,000 kilowatts, will work in conjunction with the upper reservoir to optimize energy conversion and enhance the efficiency of energy utilization in the Yalong River basin [3] Group 3: Strategic Importance - The Two Rivers Mouth "Water-Wind-Solar-Hydrogen-Calculation" clean energy demonstration zone is a key component of the Yalong River basin's integrated water and wind-solar energy base, playing a significant role in optimizing the power structure of the grid and ensuring national energy security [5]