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Pouring of compressor foundation for world’s largest compressed air energy storage power plant completed Date: 2025-04-08 Recently, the foundation for the compressor of Unit 2 in the second phase of the Huaneng Jintan Salt Cavern Compressed Air Energy Storage Power Generation project, constructed by Shandong Electric Power Construction Company No.1, was fully poured, laying a solid foundation for the construction of the main building structure at ground level and its upper sections. The compression system of Unit 2 in this project uses a parallel configuration of double-row compressors; a total of 8 large-scale air compressors are required. Each row is equipped with 4 compressor foundations, all of which are of massive concrete structure. The distance between these foundations is small, making the construction process challenging. The project team carefully planned this initiative, optimized the construction sequence in a scientific and rational manner, and adopted a segmented pouring approach to ensure sufficient space for the setup and reinforcement of formwork. Strengthen training on professional work standards and safety technical instructions for personnel; for each foundation, methods such as layered continuous pouring, temperature monitoring systems, and automated curing are employed. Throughout the process, special efforts are made to ensure technical compliance and to address common quality issues, thereby guaranteeing the quality of the foundation’s formation. The second phase of the Huaneng Jintan salt cavern compressed air energy storage power generation project involves the construction of two 350-megawatt non-reburning compressed air energy storage units. The total volume of the salt cavern used for storing air is 1.2 million cubic meters. This project overcomes various technical barriers; it will see the development and installation of the world’s most advanced air turbines and compression units, with 100% localization of the key equipment. During charging at the power plant, the motor drives the compressor to compress air, which is then stored in salt caverns. The heat generated during compression is stored using the heat exchange system on the compression side. When generating electricity, the heat exchanger on the expansion side is used to heat the compressed air released from the salt caverns, allowing it to enter an air turbine generator to produce electricity. It is reported that this project is currently the compressed air energy storage power station with the highest single-unit power, the largest total capacity, and the best overall efficiency in the world. It can store 2.8 million kWh of electricity after a single charge, and it is expected to undergo 330 charging and discharging cycles per year, which is equivalent to saving 270,000 tons of standard coal and reducing carbon dioxide emissions by 520,000 tons.