OUR TECHNOLOGY
OUR TECHNOLOGY
Enabling high storage density at ambient temperature
CO2 is the perfect fluid to store energy cost effectively in a closed thermodynamic process as it is one of the few gases that can be condensed and stored as a liquid under pressure at ambient temperature. This allows for high density energy storage without the need to go at extreme cryogenic temperatures.
Enabling high storage density at ambient temperature
CO2 is one of the few gasses that can be condensed and stored as a liquid under pressure at ambient temperature. This allows for high-density energy storage without requiring extreme cryogenic temperatures.
Our proprietary technology is based on a closed thermodynamic transformation. We manipulate the CO2 between its gaseous and liquid phase. Whenever energy is needed, the CO2 warms up, evaporates and expands, turning a turbine and generating electricity. No CO2 emissions into the atmosphere.
By storing the CO2 in the liquid phase at ambient temperature, we are able to reduce the typical storage costs associated with Compressed Air Energy Storage without having to deal with cryogenic temperatures associated with Liquid Air Energy Storage.
Our proprietary technology is based on a closed thermodynamic transformation. We manipulate the CO2 between its gaseous and liquid phase. Whenever energy is needed, the CO2 warms up, evaporates and expands, turning a turbine and generating electricity. No CO2 emissions into the atmosphere.
By storing the CO2 in the liquid phase at ambient temperature, we are able to reduce the typical storage costs associated with Compressed Air Energy Storage without having to deal with cryogenic temperatures associated with Liquid Air Energy Storage.
The principle
Starting
Volume at ambient conditions
Pressure in Storage conditions
Temperature in Storage conditions
Volume in Storage conditions
Energy Storage density
CO2
1 kg of CO2
0.55 m3
High Pressure (70 bar)
Ambient temperature
1.3 liters
66.7 kWh/m3
CAES (Compressed Air Energy Storage) technology is a way of storing energy by compressing air and storing it under pressure. Air is not the perfect fluid to store energy because its energy density under pressure is very low. This means that to store energy cost effectively the only way is to use underground caverns which make this system site dependent and limits its competitiveness.
LAES (Liquid Air Energy Storage) solves this issue by liquifying air and hence reaching very high energy densities. However, the high energy density of liquid air has the drawbacks associated with cryogenic temperatures, which makes the system complex and uncompetitive. By using CO2 instead of air, Energy Dome has the same benefits of LAES and CAES (high energy density and storing energy at ambient temperature respectively) but without their associated drawbacks relating to efficiency, cost and site dependency.
The principle
CO2
Starting
1 kg of CO2
Volume at ambient conditions
0.55 m3
Pressure in Storage conditions
High Pressure (70 bar)
Temp. in Storage conditions
Ambient temperature
Volume in Storage conditions
1.3 liters
Energy Storage density
66.7 kWh/m3
Starting
1 kg of CO2
Volume at ambient conditions
0.55 m3
Pressure in Storage conditions
High Pressure (70 bar)
Temp. in Storage conditions
Ambient temperature
Volume in Storage conditions
1.3 liters
Energy Storage density
66.7 kWh/m3
Starting
1kg of Air
Volume at ambient conditions
0.82 m3
Pressure in Storage conditions
High Pressure (70 bar)
Temp. in Storage conditions
Ambient temperature
Volume in Storage conditions
12 liters liters
Energy Storage density
2-6 kWh/m3
Starting
1kg of Air
Volume at ambient conditions
0.82 m3
Pressure in Storage conditions
15 bar
Temp. in Storage conditions
-190°C
Volume in Storage conditions
1.1 liters
Energy Storage density
107 kWh/m3
CAES (Compressed Air Energy Storage) technology is a way of storing energy by compressing air and storing it under pressure. Air is not the perfect fluid to store energy because its energy density under pressure is very low. This means that to store energy cost effectively the only way is to use underground caverns which make this system site dependent and limits its competitiveness.
LAES (Liquid Air Energy Storage) solves this issue by liquifying air and hence reaching very high energy densities. However, the high energy density of liquid air has the drawbacks associated with cryogenic temperatures, which makes the system complex and uncompetitive. By using CO2 instead of air, Energy Dome has the same benefits of LAES and CAES (high energy density and storing energy at ambient temperature respectively) but without their associated drawbacks relating to efficiency, cost and site dependency.