Subsurface fluid storage in future energy systems

Storage of energy and carbon dioxide in subsurface geological formations has been identified as key for future systems relying on renewable, zero carbon power and heat generation. All subsurface storage systems rely on the properties and integrity of the reservoir and its confining units under thermal, mechanical, hydraulic and chemical stress. These similarities enable the transfer of know-how from one type of fluid storage to another, highlighting the need for research knowledge exchange. Besides the geological challenges accompanying subsurface fluid storage, the role in future energy systems as well as public perception are decisive for the success of storage technology. This session addresses storage of fluids in geological systems at all scales, from laboratory experiments to full-scale storage projects. Individual studies, initiatives and active projects integrating elements of the storage chain are invited as well as field projects focused on geological storage. Relevant topics include but are not limited to: Regional and local characterization of storage formations and their behaviour during injection and storage, including long-term response Identification and determination of key site parameters for energy storage, mechanisms for trapping and recovery efficiency Energy and carbon storage scenarios as pathways for a low carbon future Public perception of energy and carbon storage Characterization of reservoir and cap-rocks and their fluid-flow properties with respect to hydrogen and carbon dioxide Evaluation of available infrastructure and injection strategies Geophysical and geochemical monitoring for safe and cost-efficient storage Coupling of different types of energy storage in a carbon neutral energy system