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Risks and opportunities related to underground energy storage in France

Abstract : Due to the intermittent nature of certain renewable energies, it is necessary to store unconsumed energy for later distribution. Among the various available options, underground storage allows good insulation relative to the surface and the storage of large volumes. It is already known to store natural gas and hydrocarbons in the subsoil. In the near future, it is being considered to store other products in the form of chemical energy (hydrogen), potential energy (compressed air, water in pumped hydroelectric energy storage) or thermal energy (hot/cold water). This will require producing caves (or reusing old ones) or the use of deep aquifers, depending on the geological characteristics. Hydrogen has a high energy capacity, and its massive underground storage could be of national interest but it will be necessary to overcome challenges related to the risks and impacts of this specific gas. Other abovementionned energy storage solutions are rather of régional interest, for example in a smart grid context. The cost of producing and exploiting an underground energy storage site is also an important element due to the surface and underground equipment required. These costs should, however, gradually decrease as demand develops.
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Submitted on : Tuesday, August 3, 2021 - 3:04:09 PM
Last modification on : Tuesday, August 3, 2021 - 3:09:31 PM
Long-term archiving on: : Thursday, November 4, 2021 - 7:00:01 PM


2018-029 post-print.pdf
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  • HAL Id : ineris-01853332, version 1



Philippe Gombert, Mehdi Ghoreychi, Franz Lahaie, Romuald Salmon, Alain Thoraval. Risks and opportunities related to underground energy storage in France. Tunnels et Espace Souterrain, 2017, pp.47-62. ⟨ineris-01853332⟩



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