1
Country: Canada | Funding: $2.3B
Hydrostor is a creator of Advanced Compressed Air Energy Storage (A-CAES) - long-duration, emission-free, economical energy storage. Its method is as simple as it is effective: When surplus power is available on the grid, Hydrostor directs it through turbines, transforms it to compressed air and pump it into massive underground caverns. Once in the cavern, it is retained as potential energy. When the grid requires that power back, the storage straightforwardly inverts the process. Adiabatic compression reuses heat for efficiency, while hydrostatic control guarantees stable pressure, decreasing footprint and enabling flexible siting. The company declares delivery of up to 500MW for 8 hours and project lifetime up to 50+ years.
Hydrostor is a creator of Advanced Compressed Air Energy Storage (A-CAES) - long-duration, emission-free, economical energy storage. Its method is as simple as it is effective: When surplus power is available on the grid, Hydrostor directs it through turbines, transforms it to compressed air and pump it into massive underground caverns. Once in the cavern, it is retained as potential energy. When the grid requires that power back, the storage straightforwardly inverts the process. Adiabatic compression reuses heat for efficiency, while hydrostatic control guarantees stable pressure, decreasing footprint and enabling flexible siting. The company declares delivery of up to 500MW for 8 hours and project lifetime up to 50+ years.
2
Country: UK | Funding: $445.5M
Highview Power’s CRYOBattery delivers, clean, reliable, and cost-efficient long-duration energy storage to enable a 100% renewable energy future. It is storing energy in “liquid air”—when you compress a gas enough, it turns liquid
Highview Power’s CRYOBattery delivers, clean, reliable, and cost-efficient long-duration energy storage to enable a 100% renewable energy future. It is storing energy in “liquid air”—when you compress a gas enough, it turns liquid
3
Country: Netherlands | Funding: €23.3M
Corre Energy develops, builds and operates grid-scale underground energy storage.
Corre Energy develops, builds and operates grid-scale underground energy storage.
4
Country: UK | Funding: £14M
Cheesecake Energy is developing advanced thermal and compressed air energy systems to store energy.
Cheesecake Energy is developing advanced thermal and compressed air energy systems to store energy.
5
Country: UK | Funding: £1M
Storelectric creates large-scale, long-term energy storage systems. Its technology combines compressed air storage (CAES) and hydrogen storage. Its projects utilize underground salt caverns (either newly built or repurposed from oil and gas storage) for large-scale, long-term storage of hydrogen and electricity. The company integrates these systems with renewable energy sources, compressed air energy storage, electrolysis and fuel synthesis, supporting both electricity and gas grids and grid interconnections. A pressure-control system allows hydrogen to be stored at the same pressure as its production (30–300 bar), minimizing energy consumption during storage.
Storelectric creates large-scale, long-term energy storage systems. Its technology combines compressed air storage (CAES) and hydrogen storage. Its projects utilize underground salt caverns (either newly built or repurposed from oil and gas storage) for large-scale, long-term storage of hydrogen and electricity. The company integrates these systems with renewable energy sources, compressed air energy storage, electrolysis and fuel synthesis, supporting both electricity and gas grids and grid interconnections. A pressure-control system allows hydrogen to be stored at the same pressure as its production (30–300 bar), minimizing energy consumption during storage.
6
Country: Israel
BaroMar's under-sea energy storage technology enables the utilization of wind and solar power for a consistent and reliable supply of electricity.
BaroMar's under-sea energy storage technology enables the utilization of wind and solar power for a consistent and reliable supply of electricity.
7
Country: USA
Apex is a Texas-based company created to develop, construct, own and operate compressed air energy storage (CAES) plants.
Apex is a Texas-based company created to develop, construct, own and operate compressed air energy storage (CAES) plants.
