Adiabatic CAES: The ADELE-ING project

Adiabatic compressed air energy storage is a promising concept for large-scale electricity storage and a key element for the flexibilisation of tomorrow’s energy system. In the course of the German projects ADELE and ADELE-ING numerous open questions of the technology have been addressed and resolved. The technical feasibility of components and system has been confirmed and a large number of potential sites in Europe has been identified. From a number of system configurations a ranking of the most favored options has been elaborated. Also, a substantial cost reduction potential has been tapped: The specific investment costs of the ADELE-technology could be reduced to the level of pumped hydro plants. The presentation reports on the status of the project work and outlines ongoing activities. A focus is on the heat storage development.