Funding entity Endesa
The integration of large amounts of wind and solar energy requires the use of energy storage systems. The energy storage systems with greater capacity traditionally used are based on reversible hydro (pump/turbine facilities). However, the best sites have already been exploited and the prospects of bringing new sites are limited.
Among the most promising alternatives for energy storage is the geological storage of high pressure air. This energy storage use compressive energy contained in a mass of pressurized air stored in geological cavities. Energy storage is done compressing air during valley hours. During peak hours, the compressed air is used to produce energy, expanding through Bryton cycle gas turbines with relatively high efficiency.
This project addresses a technical and economic study of grid integration of energy storage plants compressed air.