抽蓄电站 “扎堆” 投产！1000 兆帕高强钢打破进口依赖

Core Viewpoint - The recent advancements in pumped storage hydropower stations in China signify a transition to a new phase characterized by high quality, technology, and efficiency, driven by the urgent need for flexible regulation in the energy structure transformation [1][2]. Group 1: Industry Records and Technological Advancements - The Zhejiang Tiantai pumped storage station has set multiple industry records, including the highest single-unit capacity in China at 425,000 kilowatts and the highest rated head in the world at 724 meters, marking a significant leap in China's pumped storage technology from "catching up" to "leading" [2][3]. - The successful domestic production of 1000 MPa high-strength steel and welding materials at the Tiantai station eliminates reliance on imports and enhances the domestic supply chain for critical materials [3][4]. - The innovative design of the turbine blades at the Tiantai station, which includes a unique configuration of 12 blades, optimizes water flow and significantly improves the stability and efficiency of the unit under high head conditions [4]. Group 2: Industry Growth and Capacity Expansion - As of September 2025, China's total installed capacity of pumped storage stations reached 62.365 million kilowatts, surpassing the 62 million kilowatt target set for the 14th Five-Year Plan, maintaining the world's leading position for nine consecutive years [6]. - The construction of pumped storage stations is expanding from the eastern coastal regions to the central and western areas, creating a balanced development pattern across the country [6][7]. Group 3: Future Directions and Challenges - The industry is evolving from a focus on single engineering projects to a more integrated approach that includes technological innovation, industrial integration, and digital transformation, aiming to create new competitive advantages [9]. - The development of variable-speed pumped storage units is anticipated to become a trend, offering broader adjustment ranges and faster response times to accommodate the fluctuations of renewable energy sources [9]. - Challenges such as lengthy project development cycles, the need for improved reliability of core components, and the necessity for enhanced cross-regional coordination mechanisms are identified as areas requiring attention [10].