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A typical salt cavern can store 3,300 to 11,000 tons of hydrogen

Salt caverns can store between 3,300 and 11,000 tons of hydrogen 1. There is no defined ratio between space within a cavern and how much hydrogen can be stored, and storage capacity is ultimately determined by the permeability, structural integrity, and size of the salt formation. Large-scale energy storage projects often use multiple salt caverns located near each other, allowing for much greater storage capacity than a single cavern could offer 2.

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Footnotes​

  1. Walsh, S. D., Easton, L., Wang, C., & Feitz, A. J. (2023). Evaluating the economic potential for geological hydrogen storage in Australia. Earth Science, Systems and Society, 3. https://doi.org/10.3389/esss.2023.10074 ↩

  2. Tackie-Otoo, B. N., & Haq, M. B. (2024). A comprehensive review on geo-storage of H2 in salt caverns: Prospect and research advances. Fuel, 356, 129609. https://doi.org/10.1016/j.fuel.2023.129609 ↩