The 300MW advanced compressed air energy storage project in Xinyang, Henan has entered a critical phase of implementation
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The 300MW advanced compressed air energy storage project in Xinyang, Henan Province, has a capacity of 300MW/1200MWh. It has been included in the list of **pilot projects for new types of energy storage, the list of demonstration projects for green and low-carbon advanced technologies (second batch), as well as among the first batch of key construction projects in Henan Province. As the lead party of the consortium, the Shanghai Institute is responsible for carrying out the EPC work for the ground portion of this project. This project adopts the world’s first \"fully artificial cavern gas storage\" technology, offering advantages such as a long system lifespan, low unit cost, high energy storage density, wide applicability, and being clean and pollution-free. Upon completion of the project, the annual power output will amount to 420 million kWh, sufficient to meet the electricity needs of 350,000 ordinary households for one year. This will help improve the efficiency, economic viability, and reliability of the local power system, with its performance metrics setting new records for compressed air energy storage systems worldwide. At the same time, by participating in joint operation models such as grid peak shaving, market-based trading, and shared energy storage, it injects new vitality into the local electricity market, providing strong support for the healthy development of regional new energy sources and the safe operation of the power grid. The project is in a critical phase of accelerated construction, and the company will increase investment in technology and on-site construction management to ensure its swift progress. The Xinyang compressed air energy storage project represents a new breakthrough for Shanghai Institute’s compressed air energy storage business. The experience gained from this project provides a replicable and scalable \"Xinyang model\" that can be used to advance the development of new energy storage solutions by the company. The Shanghai Institute is committed to turning the Xinyang project into a new benchmark and model for innovation in new energy storage technologies and low-carbon practices. By implementing key projects, it aims to accelerate technological advancements and industrial development in the field of compressed air energy storage, thereby providing new momentum for Xinyang’s green transformation and the implementation of its \"dual carbon\" strategy. This effort also helps to strengthen China’s leading position in the field of new energy storage technologies.
Underground gas storage facilities are the core infrastructure of compressed air energy storage systems; they determine key factors such as gas storage capacity, system efficiency, as well as safety and stability. They represent one of the critical technologies for the development of long-duration, large-scale compressed air energy storage. The capacity of the gas storage facility being built this time is 300,000 cubic meters, which is equivalent to the volume of water in 130 Olympic-standard swimming pools filled to capacity; this represents a 300% increase compared to the largest capacity previously designed. For the first time in China, this project features a super-large tunnel diameter of 15 meters – a 50% increase in diameter that alone reduces costs by 200 million yuan, thereby significantly improving energy storage density and the economic viability of the project. Water accumulation in underground gas storage facilities due to geological reasons is one of the key technical challenges that have long plagued their safety and construction efficiency. This time, by properly designing the longitudinal slope of the gas storage facility and establishing an efficient gravity-fed drainage system, technicians were able to reduce the water level inside the facility, thereby providing a new solution for constructing drainage systems in gas storage facilities under complex geological conditions. Once the 300-megawatt advanced compressed air energy storage **pilot power plant in Xinyang, Henan is completed, it is expected to generate 420 million kWh of electricity per year.
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