Ana Delicado (Coord.)

CEEGS (CO₂ based electrothermal energy and geological storage system) is a cross-sectoral technology for energy transition, with a renewable energy storage system based on the transcritical CO₂ cycle, CO₂ storage in geological formations and geothermal heat extraction. It is a highly efficient, cost-effective, and scalable (small-to large-scale) concept for large-capacity renewable energy storage.

Approach:

1. From theoretical principles to models, simulations and processes in which advanced numerical simulations integrate reservoir behaviour, wellbore design and surface plant design;
2. From models and simulations to systems/experimental verification addressing CEEGS integration and efficiency in energy systems, with digital functional and laboratory models developed and components validated with results from the CO₂ pilot-scale projects and;
3. Social, economic and sustainability assessments where social acceptance studies, Life Cycle Assessment (LCA) and Techno-Economic Analysis (TEA) tools evaluate impacts and concept deployment with renewables, hard-to-decarbonise industries, district heating and cooling, or in grid balance.

A multidisciplinary consortium with expertise in energy (turbomachinery, processes, heat exchange, energy storage, thermal systems, etc.), geology (well designs, CO₂ underground storage, etc.), and social sciences (risk perception, public engagement) with the support of leading European geology associations and industries in the energy sectors.