The ECCE Feicheng 2*300 MW (Phase I) salt cavern compressed air energy storage power plant project has officially entered the stage of main structure construction

Thread Content

On February 25, the CECE Feicheng 2*300 MW (Phase I) salt cavern compressed air energy storage power plant project, invested and constructed by China Power Construction New Energy Company, reached a milestone moment: the first batch of concrete was successfully poured into the main building, marking the official start of the construction phase for this project. The FEICHENG 2*300 MW (Phase I) Salt Cavern Compressed Air Energy Storage Power Station, developed by China Power Construction, is the first energy storage facility in China to employ advanced adiabatic compressed air energy storage technology of the 300 MW class, featuring a full-water medium and high capacity at high temperature and pressure without the need for supplementary combustion. Since obtaining the approval document for construction projects in Shandong Province in November 2023, the project has been included in Shandong Province’s list of key implementation projects for two consecutive years, in 2024 and 2025. It was also designated as a project that requires priority attention in the Shandong Provincial Energy Bureau’s “Key Points for Energy Transition Work in 2024”, underscoring its central role in the region’s energy transition process. The project is located in the Energy Storage Industrial Park of Feicheng Economic Development Zone in Shandong, covering an area of approximately 221 mu. Two 300 MW/1800 MWh compressed air energy storage units are planned to be installed, with a heat storage temperature of up to 224°C. The charging time is 8 hours, the power generation time is 6 hours, and the designed charge-discharge efficiency exceeds 70%. The medium temperature, main gas parameters, and unit scale all reach the highest levels in China and are at the international forefront; it features a simple system design, high efficiency, low investment costs, and reduced operational and maintenance expenses. The power plant adopts the concept of a digital and intelligent power plant, relying on digital technology as the foundation and intelligence as the core, to achieve intelligent management throughout the entire life cycle, from design and construction to operation and maintenance. At the same time, it developed over a dozen key technologies, including those for the renovation and evaluation of complex old salt cavern storage facilities capable of withstanding high pressures, high-temperature and high-pressure cyclic heat storage systems and their control technologies, constant-temperature control technologies for expansion power generation, long-distance transmission of high-pressure saline air, and advanced technologies for the efficient utilization of waste heat. Guided by six types of demonstrations—process systems, high-quality projects, core equipment, full-process digitalization, green and low-carbon technologies, and comprehensive utilization of salt caverns—it has reached a leading level in China in terms of three key indicators: installed capacity, conversion efficiency, and investment levels. Upon completion, the project is expected to generate an average annual electricity output of 1.188 billion kWh. As an important infrastructure supporting the new type of power system, it will effectively meet the new demands for system balance arising from the large-scale integration of new energy sources and the upgrading of users’ energy consumption patterns, providing the power grid with flexible and efficient peak shaving, frequency regulation, and backup capacity services. It will not only significantly enhance the regulation capacity of regional power grids but also promote the large-scale application of new energy storage technologies in China, providing strong support for building a clean, low-carbon, safe, and efficient modern energy system and achieving the \"dual carbon\" goals.