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Core Viewpoint - The article highlights the launch of China's first large-scale lithium-sodium hybrid energy storage station, the Baochi Energy Storage Station, which aims to enhance the stability and efficiency of renewable energy integration into the grid [1][3]. Group 1: Project Overview - The Baochi Energy Storage Station, located in Yunnan, covers an area equivalent to five football fields and has a capacity of 400 megawatt-hours, capable of adjusting 580 million kilowatt-hours of electricity annually, sufficient for 270,000 households, with a green energy ratio of 98% [3]. - Yunnan is a typical region with a high proportion of renewable energy, having surpassed 60 million kilowatts of installed capacity, with a penetration rate close to 70% in the power system [5]. Group 2: Technology and Benefits - The hybrid lithium-sodium technology at the Baochi station supports over 30 wind and solar power plants in Yunnan, facilitating stable integration of large amounts of renewable energy into the grid and promoting efficient utilization of renewable resources [7][9]. - The integration of lithium and sodium battery storage advantages expands the application scenarios for sodium-ion battery storage in China, accelerating the development of the new energy storage industry chain [9]. - Sodium resources are abundant and can be extracted from salt mines, seawater, and salt lakes, with one salt lake containing sodium resources equivalent to 500 times the global lithium resources [11]. Group 3: Performance and Future Applications - The newly developed large-capacity sodium-ion battery at the Baochi station has a response speed six times faster than existing sodium-ion batteries, enhancing the station's regulation capabilities [13]. - The flexible charging and discharging modes of the sodium battery system can balance the volatility of renewable energy, with potential applications in regions with high renewable energy proportions such as Tibet, Xinjiang, Gansu, and Ningxia [15].