1
Country: Switzerland | Funding: $1.1B
Energy Vault SA implements large-scale projects building energy storage systems including gravity-based, battery-based and green hydrogen-based, managed by its proprietary energy management system and integration platform. It designs, builds and operates both short-term and long-term energy storages for utilities, independent power producers and large industrial enterprises. Its proprietary X-VAULT platform ensures cost-effectiveness by optimizing site layout, energy density and other factors, while the Circuit VaultOS system monitors and manages the ESS.
Energy Vault SA implements large-scale projects building energy storage systems including gravity-based, battery-based and green hydrogen-based, managed by its proprietary energy management system and integration platform. It designs, builds and operates both short-term and long-term energy storages for utilities, independent power producers and large industrial enterprises. Its proprietary X-VAULT platform ensures cost-effectiveness by optimizing site layout, energy density and other factors, while the Circuit VaultOS system monitors and manages the ESS.
2
Country: USA | Funding: $31.3M
Quidnet Energy develops long-duration geomechanical energy storage systems. This new form of underground pumped-storage hydroelectric power generation utilizes existing natural resources. Each module is manufactured using traditional drilling processes and standardized hydromechanical energy conversion components. The modules operate within a closed-loop water system designed to prevent energy loss through evaporation. When excess power is available, it is used to pump water from a pond into a borehole, maintaining it under pressure. The borehole is then closed, maintaining the stored energy under pressure for as long as needed. When power is needed, the borehole is opened, allowing the pressurized water to pass through a turbine to generate electricity and return to the pond for the next cycle.
Quidnet Energy develops long-duration geomechanical energy storage systems. This new form of underground pumped-storage hydroelectric power generation utilizes existing natural resources. Each module is manufactured using traditional drilling processes and standardized hydromechanical energy conversion components. The modules operate within a closed-loop water system designed to prevent energy loss through evaporation. When excess power is available, it is used to pump water from a pond into a borehole, maintaining it under pressure. The borehole is then closed, maintaining the stored energy under pressure for as long as needed. When power is needed, the borehole is opened, allowing the pressurized water to pass through a turbine to generate electricity and return to the pond for the next cycle.
3
Country: USA
Advanced Rail Energy Storage (ARES) provides a deployable solution for grid-scale energy storage. ARES mission is to enable the electric grid to integrate unprecedented amounts of clean, environmentally responsible, renewable energy while maintaining the reliable electric service necessary to power growth and prosperity.
Advanced Rail Energy Storage (ARES) provides a deployable solution for grid-scale energy storage. ARES mission is to enable the electric grid to integrate unprecedented amounts of clean, environmentally responsible, renewable energy while maintaining the reliable electric service necessary to power growth and prosperity.
4
Country: Italy | Funding: $8M
Sizable Energy creates offshore pumped-storage hydroelectric power plants. Their modular, scalable ocean-based system enables low-cost long-term energy storage on a gigawatt scale by pumping saturated seawater brine (which is heavier than seawater) from the seafloor to a surface reservoir, harnessing the ocean's depth. In recovery mode, the brine flows downward under the influence of gravity, turning a power turbine. The design is simple and includes reservoir on the ocean floor, another floating on the surface, connecting pipe and reversible pumping turbines to pump the saturated seawater brine between the two reservoirs. The system is made from readily available materials that can be manufactured, assembled and installed at depths of 500 meters or more using existing offshore infrastructure. It can be linked to floating wind and solar power plants. Since only ocean water is used, the solution is environmentally sustainable.
Sizable Energy creates offshore pumped-storage hydroelectric power plants. Their modular, scalable ocean-based system enables low-cost long-term energy storage on a gigawatt scale by pumping saturated seawater brine (which is heavier than seawater) from the seafloor to a surface reservoir, harnessing the ocean's depth. In recovery mode, the brine flows downward under the influence of gravity, turning a power turbine. The design is simple and includes reservoir on the ocean floor, another floating on the surface, connecting pipe and reversible pumping turbines to pump the saturated seawater brine between the two reservoirs. The system is made from readily available materials that can be manufactured, assembled and installed at depths of 500 meters or more using existing offshore infrastructure. It can be linked to floating wind and solar power plants. Since only ocean water is used, the solution is environmentally sustainable.
5
Country: Australia | Funding: A$9M
Green Gravity uses disused mines to store energy. This allows renewable energy to be used when it is needed.
Green Gravity uses disused mines to store energy. This allows renewable energy to be used when it is needed.
6
Country: UK | Funding: £4.1M
Gravitricity is developing a novel storage technology which offers some of the best characteristics of lithium batteries and pumped storage. Its patented technology is based on a simple principle: raising and lowering a heavy weight to store energy.
Gravitricity is developing a novel storage technology which offers some of the best characteristics of lithium batteries and pumped storage. Its patented technology is based on a simple principle: raising and lowering a heavy weight to store energy.
7
Country: USA
Gravity Power developed a novel grid-scale energy storage system for Gravity Power Plants
Gravity Power developed a novel grid-scale energy storage system for Gravity Power Plants
8
Country: Germany
Simple, clever and durable: The technical concept of Gravity Storage uses the gravitational power of a huge mass of rock.
Simple, clever and durable: The technical concept of Gravity Storage uses the gravitational power of a huge mass of rock.
