Most commonly, the air is stored in man-made salt caverns of several 100,000 m3, built into subsurface salt formations. . This technology strategy assessment on compressed air energy storage (CAES), released as part of the Long-Duration Storage Shot, contains the findings from the Storage Innovations (SI) 2030 strategic initiative. The objective of SI 2030 is to develop specific and quantifiable research, development. . A pressurized air tank used to start a diesel generator set in Paris Metro Compressed-air-energy storage (CAES) is a way to store energy for later use using compressed air. At a utility scale, energy generated during periods of low demand can be released during peak load periods. CAES is an energy storage system that compresses air. . CAES offers a powerful means to store excess electricity by using it to compress air, which can be released and expanded through a turbine to generate electricity when the grid requires additional power. Some operating restrictions/special hardware and package modifications may apply.
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