Compressed Air Energy Storage in Aquifer and Depleted Gas Storage Reservoirs

Chapter 19 Compressed Air Energy Storage in Aquifer and Depleted Gas Storage Reservoirs Michael J. King, Michael J. KingSearch for more papers by this author and George Moridis, George MoridisSearch for more papers by this author Michael J. King, Michael J. KingSearch for more papers by this author and George Moridis, George MoridisSearch for more papers by this author Book Editor(s):Andreas Hauer, Andreas Hauer ZAE-Bayern, Garching, GermanySearch for more papers by this author First published: 25 April 2022 https://doi.org/10.1002/9781119239390.ch19 AboutPDFPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShareShare a linkShare onFacebookTwitterLinked InRedditWechat Abstract Compressed Air Energy Storage (CAES) is a process for storing and delivering electricity. A CAES facility consists of an electric generation and an energy storage system. Off-peak electricity is stored as air pressure in a geological storage vessel. During peak demand periods, the compressed air is released from the pressurized energy-storage system and used to drive turbines to produce electricity. CAES technology requires the matching of operating pressure and flow rate of a geological storage vessel to that required by the turbo-generator equipment. Because of the high pressure and large air mass required to operate the turbo-machinery, earth-based storage vessels are the only viable air storage option. Earth-based air storage structures suitable for CAES service include 1) aquifer geologic structures, and 2) depleted natural gas reservoirs, 3) solution mined salt caverns, and 4) abandoned mines. The focus of this article is the design analysis of aquifer geological structures and depleted gas reservoirs to match the turbo-machinery operating mass flow rate and pressure requirements. The article evaluates the storage design criteria of the CAES geological storage structure. It also evaluates the hydraulic properties of the air storage rock medium necessary to support the required air mass flow rates and pressures. Advances in Energy Storage: Latest Developments from R&D to the Market RelatedInformation