OIES – Underground Storage for Decarbonisation: Trade-offs Between Hydrogen, Natural Gas, and Carbon Dioxide

The main topic of the document is the study of the role of large-scale underground storage for decarbonisation, including the storage of natural gas, hydrogen, and carbon dioxide.

The document examines the technical, economic, and strategic issues associated with the simultaneous management of these gases in underground geological formations such as salt and rock caverns, deep aquifers, and depleted hydrocarbon reservoirs. Key findings include the importance of underground storage in the context of accelerating global decarbonisation efforts, the growing demand for natural gas as a transitional fuel, the increasing role of clean hydrogen, and the need for permanent CO2 sequestration to reduce its atmospheric concentration.