云南能投350MW盐穴压缩空气储能示范项目开工

Core Insights - Yunnan Energy Investment has officially commenced the construction of a 350MW salt cavern compressed air energy storage demonstration project in Anning City, marking the first high-altitude mountain salt cavern compressed air energy storage project in Southwest China [1][2] - The project aims to support the national "dual carbon" goals and establish a new power system in Yunnan, filling the gap in long-duration physical energy storage technology within the province [1][2] Project Overview - The project will have a single storage capacity of 1.75 million kilowatt-hours, with an energy storage duration of 8 hours, an annual turnover of 300 cycles, and a minimum utilization of 1,500 hours, leading to an annual power generation capacity of 525 million kilowatt-hours [1] - Total investment for the project is 1.872 billion yuan, utilizing retired salt caverns as storage mediums and designed to operate at pressures between 7MPa and 9MPa [1][2] Technical Features - The project includes an air compression system, turbine generator system, heat exchange system, and a 220kV booster station, integrating into the Yunnan power grid with a 42-kilometer connection to the Kunming Pujie substation [2] - It is expected to be completed and operational by the first half of 2027, serving multiple functions such as peak shaving, frequency regulation, and black start capabilities, thus acting as a "stabilizer" for grid safety [2] Strategic Importance - This project is a key component of Yunnan Energy Investment Group's "8+X" large energy industry system, promoting the integration of green electricity and energy storage [2] - The initiative addresses technical challenges in high-altitude environments by collaborating with universities and research institutions to develop a specialized energy storage system, enhancing overall energy utilization efficiency to over 70% [2]