1
Country: USA | Funding: $31.2M
Noon Energy is creating multi-day energy storage systems based on reversible solid oxide fuel cells. The system consists of power unit, charging tank (which converts electricity into a carbon-based storage medium, releasing oxygen into the air) and discharging tank (which extracts oxygen from the air to convert the stored energy back into electricity). The company has already demonstrated its battery operating for thousands of hours and claims that the system can operate in discharge mode for up to 200 hours at maximum power. The battery's compact design, according to the company, is 20-200 times smaller in area than other LDES technologies, citing flow batteries and pumped hydroelectric power plants as examples. Noon Energy also claims it uses only about 1% of the critical materials compared to lithium-ion batteries.
Noon Energy is creating multi-day energy storage systems based on reversible solid oxide fuel cells. The system consists of power unit, charging tank (which converts electricity into a carbon-based storage medium, releasing oxygen into the air) and discharging tank (which extracts oxygen from the air to convert the stored energy back into electricity). The company has already demonstrated its battery operating for thousands of hours and claims that the system can operate in discharge mode for up to 200 hours at maximum power. The battery's compact design, according to the company, is 20-200 times smaller in area than other LDES technologies, citing flow batteries and pumped hydroelectric power plants as examples. Noon Energy also claims it uses only about 1% of the critical materials compared to lithium-ion batteries.
2
Country: USA | Funding: $2.9B
Eos produces zinc-based battery energy storage systems. The company's technology overcomes the limitations of traditional lithium-ion batteries paovides discharge time from 3 to 12 hours. The Eos Z3 zinc-based wet battery module includes zinc cathode, aqueous electrolyte, bipolar electrodes and polymer housing. The electrodes offer high mechanical strength, corrosion resistance and chemical stability, ensuring years of operation with virtually no degradation. Furthermore, the bipolar structure simplifies the battery's internal connections, reducing internal resistance and increasing energy conversion efficiency. The company is also developing a software platform for managing the energy storage system, which implements real-time intelligence, advanced control capabilities and AI-based analytics.
Eos produces zinc-based battery energy storage systems. The company's technology overcomes the limitations of traditional lithium-ion batteries paovides discharge time from 3 to 12 hours. The Eos Z3 zinc-based wet battery module includes zinc cathode, aqueous electrolyte, bipolar electrodes and polymer housing. The electrodes offer high mechanical strength, corrosion resistance and chemical stability, ensuring years of operation with virtually no degradation. Furthermore, the bipolar structure simplifies the battery's internal connections, reducing internal resistance and increasing energy conversion efficiency. The company is also developing a software platform for managing the energy storage system, which implements real-time intelligence, advanced control capabilities and AI-based analytics.
3
Country: USA | Funding: $4.9B
Recurrent Energy, a subsidiary of Canadian Solar Inc. (global renewable energy company) that is building one of the world's largest and most geographically diversified platforms for developing, owning and operating solar and energy storage projects. It is a leading global developer, owner and operator of solar and energy storage systems, with over 14 GW of project capacity under long-term operation and maintenance agreements.
Recurrent Energy, a subsidiary of Canadian Solar Inc. (global renewable energy company) that is building one of the world's largest and most geographically diversified platforms for developing, owning and operating solar and energy storage projects. It is a leading global developer, owner and operator of solar and energy storage systems, with over 14 GW of project capacity under long-term operation and maintenance agreements.
4
Country: UK | Funding: $2.9B
Zenobe Energy manufactures battery energy storage systems. It provides comprehensive solutions for the electrification of fleets (buses, trucks and school transportation), including charging infrastructure, battery replacement and fleet management software. End-of-life vehicle batteries are given a second life in static battery systems. The company designs, finances, builds and operates large-scale battery storage systems, including Europe's largest 300 MW battery storage facility in Blackhillock, Scotland. Zenobe also supplies portable industrial BESS solutions powered by reconditioned batteries for construction sites and remote facilities.
Zenobe Energy manufactures battery energy storage systems. It provides comprehensive solutions for the electrification of fleets (buses, trucks and school transportation), including charging infrastructure, battery replacement and fleet management software. End-of-life vehicle batteries are given a second life in static battery systems. The company designs, finances, builds and operates large-scale battery storage systems, including Europe's largest 300 MW battery storage facility in Blackhillock, Scotland. Zenobe also supplies portable industrial BESS solutions powered by reconditioned batteries for construction sites and remote facilities.
5
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.
6
Country: USA | Funding: $1.6B
Form Energy develops and manufactures multi-day energy storage systems based on iron-air batteries. These batteries are capable cost-effectively store energy for 100 consecutive hours (unlike lithium-ion batteries, which can only provide energy for a few hours). The batteries are made from safe, inexpensive and abundant materials: iron, water and air. Form Energy operates its own large-scale battery manufacturing facility in West Virginia. The company also develops software for modeling renewable energy systems that take into account modern energy market.
Form Energy develops and manufactures multi-day energy storage systems based on iron-air batteries. These batteries are capable cost-effectively store energy for 100 consecutive hours (unlike lithium-ion batteries, which can only provide energy for a few hours). The batteries are made from safe, inexpensive and abundant materials: iron, water and air. Form Energy operates its own large-scale battery manufacturing facility in West Virginia. The company also develops software for modeling renewable energy systems that take into account modern energy market.
7
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.
8
Country: USA | Funding: $737.6M
Stem develops PowerTrack - the system for managing energy storage systems and solar power plants. It continuously collects and analyzes millions of data points throughout the project lifecycle, providing comprehensive digital monitoring of operations at the asset and portfolio levels. It also leverages artificial intelligence to forecast demand and repairs, providing deep and simple analytics to help organizations automate energy cost savings and protect against tariff fluctuations. Stem also provides power plant management services - a solution for clients seeking to outsource design, procurement, commission, operation and optimize their energy storage and hybrid systems. The company manages solar assets across 200,000+ sites worldwide.
Stem develops PowerTrack - the system for managing energy storage systems and solar power plants. It continuously collects and analyzes millions of data points throughout the project lifecycle, providing comprehensive digital monitoring of operations at the asset and portfolio levels. It also leverages artificial intelligence to forecast demand and repairs, providing deep and simple analytics to help organizations automate energy cost savings and protect against tariff fluctuations. Stem also provides power plant management services - a solution for clients seeking to outsource design, procurement, commission, operation and optimize their energy storage and hybrid systems. The company manages solar assets across 200,000+ sites worldwide.
9
Country: USA | Funding: $654.2M
NineDot Energy creates innovative energy solutions that make the urban grid cleaner, more resilient and less costly. It wants to turn underused properties into community battery-farm projects.NineDot Energy is building and operating community-scale battery energy storage systems (BESS) in the New York City metropolitan area. With sites in the Bronx, Brooklyn, Queens, and Staten Island, as well as Westchester County and Long Island, NineDot Energy is helping make our local grid cleaner, more resilient, equitable and affordable. The company plans to develop and build more than 400 megawatts (MW) of clean energy systems by the end of 2026, strengthening local grid infrastructure and providing clean, reliable, and resilient power to tens of thousands of New York City homes and businesses, supporting New York State's mission to achieve 100% clean energy by 2040.
NineDot Energy creates innovative energy solutions that make the urban grid cleaner, more resilient and less costly. It wants to turn underused properties into community battery-farm projects.NineDot Energy is building and operating community-scale battery energy storage systems (BESS) in the New York City metropolitan area. With sites in the Bronx, Brooklyn, Queens, and Staten Island, as well as Westchester County and Long Island, NineDot Energy is helping make our local grid cleaner, more resilient, equitable and affordable. The company plans to develop and build more than 400 megawatts (MW) of clean energy systems by the end of 2026, strengthening local grid infrastructure and providing clean, reliable, and resilient power to tens of thousands of New York City homes and businesses, supporting New York State's mission to achieve 100% clean energy by 2040.
10
Country: USA | Funding: $525M
Fluence makes energy storage technology solutions and services.
Fluence makes energy storage technology solutions and services.
11
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
12
Country: USA | Funding: $431.2M
ESS creates long-duration energy storage (LDES) systems ideal for AI data centers, commercial and industrial facilities, utilities, microgrids and off-grid applications. They utilize an innovative iron-flow flow battery system, that uses natural elements such as iron, salt and water as electrolytes. Iron Flow technology provides unlimited cycles with zero capacity degradation over a 25-year design life. This means the batteries can be charged and discharged several times a day. ESS's gigawatt energy storage system can be deployed in months, not years. With energy storage for up to 22 hours, ESS solutions enable intermittent energy to provide baseload power. Honeywell is a major investor.
ESS creates long-duration energy storage (LDES) systems ideal for AI data centers, commercial and industrial facilities, utilities, microgrids and off-grid applications. They utilize an innovative iron-flow flow battery system, that uses natural elements such as iron, salt and water as electrolytes. Iron Flow technology provides unlimited cycles with zero capacity degradation over a 25-year design life. This means the batteries can be charged and discharged several times a day. ESS's gigawatt energy storage system can be deployed in months, not years. With energy storage for up to 22 hours, ESS solutions enable intermittent energy to provide baseload power. Honeywell is a major investor.
13
Country: USA | Funding: $420.1M
EnerVenue provides metal-hydrogen batteries for large-scale renewable and storage applications.
EnerVenue provides metal-hydrogen batteries for large-scale renewable and storage applications.
14
Country: USA | Funding: $390M
Our Next Energy is a developer of innovative energy storage solutions to expand access to sustainable power.
Our Next Energy is a developer of innovative energy storage solutions to expand access to sustainable power.
15
Country: USA | Funding: $360M
Powin Energy is a market leader in the manufacturing and development of energy storage technology used in stationary. Powin buys battery cells and hooks them up with proprietary software controls and ancillary equipment to produce full-fledged power plants. It competes in the upper echelons of the energy storage integration market with the likes of Tesla, Fluence and Wärtsilä.
Powin Energy is a market leader in the manufacturing and development of energy storage technology used in stationary. Powin buys battery cells and hooks them up with proprietary software controls and ancillary equipment to produce full-fledged power plants. It competes in the upper echelons of the energy storage integration market with the likes of Tesla, Fluence and Wärtsilä.
16
Country: USA | Funding: $357.5M
FlexGen designs and integrates storage solutions and the software platform that is enabling today’s energy transition.
FlexGen designs and integrates storage solutions and the software platform that is enabling today’s energy transition.
17
Country: Israel | Funding: $347.7M
Nostromo Energy designed a water-based energy storage system that is challenging the current BTM energy storage landscape.
Nostromo Energy designed a water-based energy storage system that is challenging the current BTM energy storage landscape.
18
Country: Estonia | Funding: €313.3M
Skeleton Technologies is a manufacturer and developer of high energy and power density ultracapacitors.
Skeleton Technologies is a manufacturer and developer of high energy and power density ultracapacitors.
19
Country: UK | Funding: $292M
Pulse Clean Energy builds and operates power stations. We deliver power into the UK’s network when it is most needed.
Pulse Clean Energy builds and operates power stations. We deliver power into the UK’s network when it is most needed.
20
Country: USA | Funding: $262.6M
On.Energy is an energy storage developer that offers AI-powered energy management software and in-house analytics for grid-scale projects.
On.Energy is an energy storage developer that offers AI-powered energy management software and in-house analytics for grid-scale projects.
21
Country: USA | Funding: $222.6M
Ambri develops a liquid battery that will change the world of grid-scale storage systems for solar and wind energy
Ambri develops a liquid battery that will change the world of grid-scale storage systems for solar and wind energy
22
Country: USA | Funding: $220M
Antora Energy is electrifying heavy industry with thermal energy storage for zero-carbon heat and power.
Antora Energy is electrifying heavy industry with thermal energy storage for zero-carbon heat and power.
23
Country: Italy | Funding: $166.9M
Energy Dome develops a low-cost and efficient system for long-duration electricity storage using liquid CO2.
Energy Dome develops a low-cost and efficient system for long-duration electricity storage using liquid CO2.
24
Country: Australia | Funding: A$226.1M
RayGen is proposing to build a fully dispatchable renewable energy facility that will use their innovative concentrated solar PV technology known as PV Ultra and combine it with their Thermal Hydro technology to generate renewable energy and provide large scale energy storage.
RayGen is proposing to build a fully dispatchable renewable energy facility that will use their innovative concentrated solar PV technology known as PV Ultra and combine it with their Thermal Hydro technology to generate renewable energy and provide large scale energy storage.
25
Country: USA | Funding: $130.1M
Nanoramic Laboratories is an industry-leading energy storage technology company & materials solutions innovator for Neocarbonix™ electrodes
Nanoramic Laboratories is an industry-leading energy storage technology company & materials solutions innovator for Neocarbonix™ electrodes
26
Country: USA | Funding: $108.5M
Alphabet Spin-Off Malta uses a heat pump to store electricity in hot molten salts and cold antifreeze liquid, then uses a heat engine to convert the energy back to electricity for the grid; electricity goes in and electricity goes out.
Alphabet Spin-Off Malta uses a heat pump to store electricity in hot molten salts and cold antifreeze liquid, then uses a heat engine to convert the energy back to electricity for the grid; electricity goes in and electricity goes out.
27
Country: Belgium | Funding: €100M
247 builds containerized LNG/H2 power plants to supply electricity, heat and/or cooling used as redundant off-grid solution, low carbon footprint & low running cost. 247 can be used as permanent power source for industrial sites, residential buildings, small remote villages, airports, sea-ports, hospitals, or as solar/ wind farm backup.
247 builds containerized LNG/H2 power plants to supply electricity, heat and/or cooling used as redundant off-grid solution, low carbon footprint & low running cost. 247 can be used as permanent power source for industrial sites, residential buildings, small remote villages, airports, sea-ports, hospitals, or as solar/ wind farm backup.
28
Country: USA | Funding: $85.2M
Ion Storage Systems is focused on developing the most energy dense, safest batteries that can be deployed in any environment. Breakthroughs in solid state battery technology have led to a battery that meets the mission critical needs for the defense and aerospace industries; and safer more efficient for consumer electronics and electric vehicles.
Ion Storage Systems is focused on developing the most energy dense, safest batteries that can be deployed in any environment. Breakthroughs in solid state battery technology have led to a battery that meets the mission critical needs for the defense and aerospace industries; and safer more efficient for consumer electronics and electric vehicles.
29
Country: Germany | Funding: €74M
Reverion produces highly efficient, reversible, carbon-negative power plants. In their process, excess generation from wind turbines and photovoltaics is converted into synthetic methane by electrolysis and can be stored. If needed, the same system can use the stored methane to generate an energy supply.
Reverion produces highly efficient, reversible, carbon-negative power plants. In their process, excess generation from wind turbines and photovoltaics is converted into synthetic methane by electrolysis and can be stored. If needed, the same system can use the stored methane to generate an energy supply.
30
Country: Germany | Funding: $74.4M
Twaice is the new analytics platform for Battery Data. The company build virtual battery models and constantly collect data with smart control units. This platform provides all battery data in one place, offer on-demand reports, and predictive diagnostics. This indeed simplifies battery testing, improve lifetime and prevent downtimes.
Twaice is the new analytics platform for Battery Data. The company build virtual battery models and constantly collect data with smart control units. This platform provides all battery data in one place, offer on-demand reports, and predictive diagnostics. This indeed simplifies battery testing, improve lifetime and prevent downtimes.
31
Country: Germany | Funding: €68.8M
VoltStorage is an electric storage device that can store clean solar power during the day to power your home at night. It will save you a lot of money, protect the environment and help to stabilize the grid.
VoltStorage is an electric storage device that can store clean solar power during the day to power your home at night. It will save you a lot of money, protect the environment and help to stabilize the grid.
32
Country: Canada | Funding: $73.2M
e-Zinc is an electrochemical technology developer of energy storage solutions.
e-Zinc is an electrochemical technology developer of energy storage solutions.
33
Country: Norway | Funding: $71.4M
Corvus designs, engineers and manufactures a proprietary advanced lithium energy-storage technology that can provide sustained power to hybrid and full-electric heavy-industrial equipment.
Corvus designs, engineers and manufactures a proprietary advanced lithium energy-storage technology that can provide sustained power to hybrid and full-electric heavy-industrial equipment.
34
Country: USA | Funding: $65M
Peak Energy is a pioneering firm that is industrializing sodium-ion to expedite the shift to renewable energy.
Peak Energy is a pioneering firm that is industrializing sodium-ion to expedite the shift to renewable energy.
35
Country: Israel | Funding: $65.1M
Brenmiller Energy, based on its unique storage technology, provides sustainable energy solutions to the Distributed Generation market.
Brenmiller Energy, based on its unique storage technology, provides sustainable energy solutions to the Distributed Generation market.
36
Country: Canada | Funding: $61.5M
Moment Energy develops clean, affordable, and reliable energy storage by repurposing retired electric vehicle batteries.
Moment Energy develops clean, affordable, and reliable energy storage by repurposing retired electric vehicle batteries.
37
Country: Netherlands | Funding: €45M
Greener Power Solutions supplies temporary on-and off-grid electrical energy by means of mobile batteries in an independent network or combination with other energy sources.
Greener Power Solutions supplies temporary on-and off-grid electrical energy by means of mobile batteries in an independent network or combination with other energy sources.
38
Country: UK | Funding: $46.1M
Moixa is the UK’s leading smart battery company. We develop our Smart Battery hardware and GridShare software to facilitate smart energy storage and sharing.
Moixa is the UK’s leading smart battery company. We develop our Smart Battery hardware and GridShare software to facilitate smart energy storage and sharing.
39
Country: UK | Funding: £35M
Exagen Group is building the next generation of utility scale solar farms co-located with grid-balancing battery storage facilities.
Exagen Group is building the next generation of utility scale solar farms co-located with grid-balancing battery storage facilities.
40
Country: China | Funding: $43.3M
Ampd Energy designs, engineers and manufactures state-of-the-art, grid-connected energy storage systems.
Ampd Energy designs, engineers and manufactures state-of-the-art, grid-connected energy storage systems.
41
Country: Finland | Funding: €35.5M
Cactos develops distributed energy storage systems based on recycled EV batteries. The energy storage units are made from re-used Tesla EV batteries, making them one of the market’s most environmentally friendly energy storage units.
Cactos develops distributed energy storage systems based on recycled EV batteries. The energy storage units are made from re-used Tesla EV batteries, making them one of the market’s most environmentally friendly energy storage units.
42
Country: USA | Funding: $35.8M
Yotta is developing modular energy storage device designed to reduce cost & expand development of energy storage & solar micro-grids.
Yotta is developing modular energy storage device designed to reduce cost & expand development of energy storage & solar micro-grids.
43
Country: India | Funding: $34.9M
Matter is pushing the boundaries of performance, safety and reliability in energy storage and management
Matter is pushing the boundaries of performance, safety and reliability in energy storage and management
44
Country: Singapore | Funding: $33.5M
VFlow uses its unique IP to build safe, long-lasting, high performing low-cost flow batteries for large scale energy storage application.
VFlow uses its unique IP to build safe, long-lasting, high performing low-cost flow batteries for large scale energy storage application.
45
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.
46
Country: USA | Funding: $29.3M
GoodPeak is a utility-scale battery energy storage platform that offers energy storage development pipeline.
GoodPeak is a utility-scale battery energy storage platform that offers energy storage development pipeline.
47
Country: Germany | Funding: €25.5M
Kraftblock is the energy storage, based on a bottom-up materials-development, which enables the energy transition to 100% renewables in an ecological and economical sensfull way.
Kraftblock is the energy storage, based on a bottom-up materials-development, which enables the energy transition to 100% renewables in an ecological and economical sensfull way.
48
Country: USA | Funding: $24.3M
Quino Energy manufactures batteries that uses specially designed reactants called quinones that are dissolved in water.
Quino Energy manufactures batteries that uses specially designed reactants called quinones that are dissolved in water.
49
Country: Germany | Funding: €20M
Pacifico Energy develops photovoltaic plants and battery energy storage systems
Pacifico Energy develops photovoltaic plants and battery energy storage systems
50
Country: Switzerland | Funding: $20.4M
Unbound Potential is a startup that develops unique solutions for long-term energy storage.
Unbound Potential is a startup that develops unique solutions for long-term energy storage.
