The CO2 Battery is a long-duration and large-scale energy storage system based on a thermodynamic process that efficiently stores energy by manipulating CO2 under different state conditions in a closed thermodynamic transformation.
source/image(PrtSc): Energy Dome
The CO2 Battery can operate in charging mode (absorbing power from the grid) and discharging mode (returning power to the grid).When operating in charging mode the CO2 is withdrawn from an atmospheric gasholder, the Dome, and compressed into an inter-refrigerated compressor.
The heat generated from the compression is stored into two Thermal Energy Storage Systems (TES).The CO2 is then condensed and stored under pressure at ambient temperature in the CO2 liquid vessels.
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When the system is operating in discharging mode, the liquid CO2 is evaporated and heated by recovering heat from the TES.The CO2 stream then expands into a reheated turbine returning power to the grid and it is stored into the Dome at ambient temperature and pressure without any leakage to the atmosphere.//Energy Dome
