LONG DURATION ENERGY STORAGE

Efficient, Economical, Anywhere


LONG DURATION ENERGY STORAGE

Efficient, Economical, Anywhere

A simple and reliable process


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. 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When operating in charging mode the CO2 is withdrawn from an atmospheric gasholder, the Dome, and compressed into an inter-refrigerated compressor.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. 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.

A simple and reliable process

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. 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When operating in charging mode the CO2 is withdrawn from an atmospheric gasholder, the Dome, and compressed into an inter-refrigerated compressor.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. 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.

parallax background
parallax background

Simplicity
as the key for cost competitiveness
and high efficiency

AThe process comprises only two thermodynamic transformations: one compression and one expansion. This reduces the overall losses and allows for RTEs of above 75%. Reduced design pressures and temperatures further simplify the system and improve economic viability, enabling the system to operate for decades without any reductions in efficiency or capacity


All the main equipment used in the CO2 battery are “off the shelf” and readily available on the market by multiple Tier 1 suppliers. Each piece of equipment is already tested on the ground in real world applications. This enables a fast commercialization and a safe and reliable operation of the CO2 battery.

Reliable “off the shelf”
equipment

Simplicity
as the key for cost competitiveness
and high efficiency


The process comprises only two thermodynamic transformations: one compression and one expansion. This reduces the overall losses and allows for RTEs of above 75%. Reduced design pressures and temperatures further simplify the system and improve economic viability, enabling the system to operate for decades without any reductions in efficiency or capacity.


Reliable “off the shelf”
equipment


All the main equipment used in the CO2 battery are “off the shelf” and readily available on the market by multiple Tier 1 suppliers. Each piece of equipment is already tested on the ground in real world applications. This enables a fast commercialization and a safe and reliable operation of the CO2 battery.

CO2 Battery Bricks

 
 
 

A market with numerous revenues streams available needs a fully customizable solution without forgetting the reliability of standardization.

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.

Standardized Bricks can be used to build the perfect solution.

 

CO2 Battery Bricks

 
 
 

A market with numerous revenues streams available needs a fully customizable solution without forgetting the reliability of standardization.

EnergyDome 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.

Standarized Bricks can be used to build the perfect solution.

 

Revenue Stacking

 
 
 

With the continuous 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 all the frequency and voltage regulation services needed for the reliable operation of the electrical grid, thereby ensuring multiple revenue streams for developers and operators.

The system 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 dedicate generator. Both compressor and expander will spin synchronous to the grid whilst the compressor discharge feeds the compressed CO2 into the expander.
In case there is a need for instant fast response power augmentation, the compressor’s switch breaker is opened after a signal from the grid and immediately net power augmentation to grid is measured. Vice versa, in case instant power absorption is required, the turbine can be tripped after signal and consequently instant power absorption from the grid can be measured.

 

Revenue Stacking

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