Model CO2 Battery -Long Duration Energy Storage
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.
The process comprises only two thermodynamic transformations: one compression and one expansion. This allows for RTEs of above 75%. This allows the system to operate efficiently for decades.
Energy Dome has developed standardized equipment «bricks» that can be combined together to build the perfect CO2 Battery for different customer needs and applications. Charging power (Compression), discharging power (Expansion) and storage capacity can be configured independently within a range of standardized solutions in order to optimize the business plan of any specific project.
With the increase of grid instability due to the increasing share of inverter based power or unpredictable inertia, grid balancing services become a key factor for a safe and reliable grid operation.
The CO2 Battery provides the frequency and voltage regulation services needed for the reliable and safe operation of the electrical grid, thereby ensuring multiple revenue streams for developers and operators.
The CO2 Battery can also be adapted to provide Fast Response services with a special configuration of the compressor and expander. In this case the plant uses two separated electrical machines, a dedicated motor drives the compressor and the expander moves a dedicated generator. Both compressor and expander will spin synchronously to the grid whilst the compressor discharge feeds the compressed CO2 into the expander.