On April 10th, according to the official WeChat account of "China Energy Construction," the world's first (set of) 300 megawatt-class compressed air energy storage power station—Hubei Yingcheng 300 megawatt-class compressed air energy storage power station demonstration project—was successfully connected to the grid for the first time.
This project, jointly developed by China Energy Construction Group and State Grid Hubei Provincial Energy Comprehensive Company, has a total investment of nearly 1.95 billion CNY. With a single unit capacity of 300 megawatts, the energy storage capacity reaches up to 1500 megawatt-hours, achieving a system conversion efficiency of approximately 70%.
This groundbreaking achievement not only refreshes three world records in single-unit capacity, energy storage scale, and conversion efficiency but also sets six industry demonstrations, realizing dozens of international firsts and global breakthroughs for the first time.
Compressed air energy storage technology, as a leader in physical energy storage, along with pumped hydro storage, has become the focus of research and development for large-scale, long-duration energy storage technologies today.
The successful grid connection of the Yingcheng project in Hubei will not only significantly enhance the peak regulation capacity of the regional power grid but also promote the integration of new energy sources such as wind and photovoltaics into the grid, thereby driving the development and application of green energy.
It is worth mentioning that the project can store energy for 8 hours per day and discharge for 5 hours, with an expected annual gas storage volume of 1.9 billion cubic meters and electricity generation of about 500 million kilowatt-hours. This achievement will inject powerful momentum into the industrial upgrading and economic development of the central region, helping to achieve sustainable energy utilization and environmental protection goals.
