Top 10 Compressed Air Energy Storage startups

Jul 20, 2025 | By Alexander Gillet

CAES startups create energy storages using compressed air.
1
Hydrostor
Country: Canada | Funding: $2.3B
Hydrostor is a developer of Advanced Compressed Air Energy Storage (A-CAES), a long-duration, emission-free, cost-effective energy storage.
2
Highview Power
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
3
LightSail Energy
Country: USA | Funding: $52.4M
LightSail Energy develops breakthrough, high efficiency energy storage systems using compressed air.
4
Corre Energy
Country: Netherlands | Funding: €23.3M
Corre Energy develops, builds and operates grid-scale underground energy storage.
5
Cheesecake Energy
Country: UK | Funding: £14M
Cheesecake Energy is developing advanced thermal and compressed air energy systems to store energy.
6
Storelectric
Country: UK | Funding: £1M
Storelectric is a developer of projects using two highly efficient forms of Compressed Air Energy Storage
7
BaroMar
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.
8
APEX CAES
Country: USA
Apex is a Texas-based company created to develop, construct, own and operate compressed air energy storage (CAES) plants.
9
TerraStor
Country: USA
Advanced compressed air energy storage for a carbon-free electrical grid
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  See also:
Top 148 Solar Energy startups
Market Landscape for Energy Startups
Top 10 Countries by number of Energy Startups
Editor: Alexander Gillet
Alexander Gillet is a senior editor for EnergyStartups. He has a deep background in energy sector and startups. Alexander graduated from Emlyon Business School, a leading French business school specialized in entrepreneurship. He has helped several non-profit organizations dedicated to promoting environmental education and sustainability and has written over 250 articles on energy technology for various websites. In his free time, Alexander enjoys yoga, camping and exploring the Blue Ridge Mountains. You can contact Alexander at alexgillet(at)energystartups(dot)com