The global long duration energy storage market size was valued at USD 279.44 billion in 2024 and is expected to be worth around USD 605.10 billion by 2033, growing at a compound annual growth rate (CAGR) of 8.96% from 2024 to 2033.
The long duration energy storage (LDES) market has been witnessing rapid growth in recent years, driven by the global push for clean energy and carbon reduction. As governments and corporations strive to meet decarbonization goals, LDES solutions are becoming critical for stabilizing renewable power grids. With energy storage technology advancing, the LDES market is expected to expand significantly. Innovations in battery chemistry, thermal storage systems, and new technologies are driving efficiency and reducing costs, making these solutions more attractive to investors and energy providers alike. This market is set to grow further due to the increased adoption of renewable energy sources, particularly solar and wind. In October 2024, Form Energy, a company specializing in iron-air batteries capable of storing energy for up to 100 hours, raised USD 405 million to accelerate manufacturing at its West Virginia facility and advance research. This funding round, led by T. Rowe Price with participation from GE Vernova and various venture capital firms, aims to support the deployment of these batteries to stabilize energy grids and reduce carbon emissions.
Long duration energy storage (LDES) is a systems that store energy for extended periods, ranging from several hours to even days or weeks, to provide a steady and reliable power supply when renewable energy sources like solar or wind are not generating electricity. These systems are crucial for integrating renewable energy into the grid by bridging gaps between energy generation and consumption. Unlike short-duration storage systems like batteries, which provide power for a few minutes to a few hours, LDES technologies can store and release energy over much longer periods. Common LDES technologies include pumped hydro storage, large-scale batteries, compressed air energy storage, and thermal storage.
Report Scope
Area of Focus | Details |
Market Size in 2025 | USD 304.49 Billion |
Estimated Market Size in 2033 | USD 605.10 Billion |
Growth Rate 2024 to 2033 | 8.96% |
Key Segments | Type, Technology, Application, Region |
Key Companies | Ambri, Cellcube, CMBlu Energy AGs, Energy Vault, Inc., ESS, Inc., e-Zinc Inc, Fluence, Form Energy, Highview Power, Hydrostor, Invinity Energy Systems, Lockheed Martin Corporation, Malta Inc., NestEra Energy, Sonnen |
Increased Adoption of Renewable Energy Integration
Advancements in Flow Battery Technologies
High Initial Capital Costs
Competition from Short-Duration Storage Technologies
Integration with Renewable Energy Projects
Rise of Battery Energy Storage Systems (BESS)
Lack of standardization in storage systems
Challenges of Grid Integration
The long duration energy storage market is segmented into type, technology, application, and region. Based on type, the market is classified into thermal, electrochemical, mechanical, and chemical. Based on technology, the market is classified into Compressed Air Energy Storage (CAES), Liquid-Air Energy Storage (LAES), Liquid/Cryogenic Carbon Dioxide Energy Storage (APHS), Gravitational Energy Storage Systems (GESS), and others. Based on application, the market is classified into utility-scale energy storage, renewable energy integration, grid resilience and stability, industrial backup, and others.
Based on type, the market is segmented into thermal, electrochemical, mechanical, chemical and others.
Thermal: Thermal energy storage includes the heating and cooling medium to use the energy when required. This type of storage can be used to balance the consumption between day and night. Thermal energy storage solutions include water or storage tanks of ice-slush, earth or bedrock accessed via boreholes and large bodies of underground water.
Electrochemical: Electrochemical energy storage (EES) is a process that converts chemical energy into electrical energy, and vice versa, using electron and ion transfer in electrodes. EES systems include batteries, supercapacitors, and fuel cells. This type energy storage have lower environmental impact as compared to other energy storage technologies.
Mechanical: Mechanical energy storage (MES) is a technology that stores energy in the form of kinetic energy, potential energy, or compression. It can be used to store energy when it's available in excess and release it when there's an energy shortfall. MES is a cost-effective alternative to battery storage that can store clean power for long durations.
Chemical: Chemical energy storage is a technology that uses reversible chemical reactions to store energy in chemical form. It's a key technology for renewable and hybrid energy systems, and can be used to add power to the grid, store excess power from the grid for later use , support grid power, transportation, and other large-scale energy needs, and enhance the flexibility of power generation systems.
Based on technology, the market is segmented into compressed air energy storage (CAES), liquid-air energy storage (LAES), liquid/cryogenic carbon dioxide energy storage (APHS), gravitational energy storage systems (GESS), others.
Compressed Air Energy Storage (CAES): CAES systems store energy by compressing air in underground reservoirs, such as salt caverns or depleted gas fields, and releasing it to generate electricity when needed. This technology provides large-scale, long-duration energy storage, with high capacity and durability. CAES is particularly useful for balancing intermittent renewable energy sources like wind and solar.
Liquid-Air Energy Storage (LAES): LAES systems store energy by cooling air to a liquid state at very low temperatures and then releasing it by expanding the air to drive turbines and generate electricity. LAES offers high energy density and long-duration storage capabilities without the need for specific geographical conditions, making it more flexible than CAES. It is suitable for grid-scale applications, particularly in regions with high renewable energy penetration.
Liquid/Cryogenic Carbon Dioxide Energy Storage (APHS): Advanced Pumped Heat Storage (APHS) with cryogenic carbon dioxide (COâ) uses low-temperature COâ as a working fluid to store energy in liquid form, which is then converted back to electricity when needed. This emerging technology offers long-duration storage with a high energy density and is versatile across various scales.
Gravitational Energy Storage Systems (GESS): GESS stores energy by raising a mass (such as large weights or water) to a higher altitude, converting potential energy into electricity when the mass is released. This technology is well-suited for long-duration storage and offers a simple, mechanical solution for energy storage without relying on chemical processes.
Others: Other emerging long-duration energy storage technologies include hydrogen storage, supercapacitors, and innovative battery technologies beyond traditional electrochemical storage. Hydrogen energy storage, in particular, is gaining significant traction due to its potential for storing renewable energy over long periods and across different sectors, such as transportation and industry.
Based on application, the market is segmented into Utility-scale energy storage, renewable energy integration, grid resilience and stability, industrial backup, others.
Utility-Scale Energy Storage: Utility-scale energy storage provides large-scale energy management solutions, ensuring efficient energy use and maintaining power supply balance across the grid. It plays a key role in addressing the intermittency of renewable energy sources by storing surplus power during off-peak hours and releasing it when demand spikes.
Renewable Energy Integration: The integration of renewable energy sources, such as solar and wind, is a primary application for long-duration energy storage. LDES systems store excess energy generated during periods of high renewable output and dispatch it when generation is low or demand is high. This enhances the reliability and availability of renewable power, promoting a smoother energy transition.
Grid Resilience and Stability: Long-duration energy storage contributes to grid resilience by providing backup power during outages or disruptions. This ensures a stable and reliable electricity supply. Long duration energy storage systems balance supply and demand over extended periods, helping prevent blackouts and manage peak loads.
Industrial Backup: In industrial settings, long-duration energy storage provides critical backup power to maintain operations during grid failures or energy shortages. Industries with continuous processes, such as manufacturing, mining, and oil and gas, require reliable power to avoid costly downtimes. LDES solutions offer long-term energy security and efficiency, making them essential for sectors dependent on uninterrupted energy supply.
Others: Other applications of long-duration energy storage include microgrids, commercial and residential energy storage, and transportation. Microgrids benefit from LDES by providing localized energy storage, enabling energy independence in remote areas. The commercial and residential sectors utilize LDES to manage energy costs and reduce dependence on grid power.
The long duration energy storage market is segmented into various regions, including North America, Europe, Asia-Pacific, and LAMEA. Here is a brief overview of each region:
The Asia-Pacific region is experiencing rapid industrialization and urbanization, leading to increased energy demand and growing interest in long-duration energy storage. Countries like China, India, and Japan are aggressively expanding their renewable energy capacity, particularly solar and wind, driving the need for storage solutions like GESS, LAES, and CAES. China, in particular, is investing heavily in pumped hydro storage and exploring gravitational and hydrogen-based storage systems to address grid stability challenges.
In North America, the focus on the generation of clean energy storage is gaining popularity. The region is focusing on the diversion towards renewable energy sources for generation of electricity. Renewable such as solar panels, wind turbines and hydroelectric dams offers a better alternative to the non-renewable sources. This shifting preference along with the growing focus on the renewable energy generation is the key factor driving the growth of the long duration energy storage market across the region.
Europe is at the forefront of renewable energy adoption, particularly in countries like Germany, the UK, and Spain, which have ambitious energy transition targets. This has fueled the demand for long-duration energy storage solutions such as Liquid/Cryogenic Carbon Dioxide Energy Storage (APHS) and LAES. Europe’s dense grid infrastructure and renewable energy reliance are driving the development of flexible, long-duration storage to manage intermittent renewable power.
The LAMEA region is gradually adopting long-duration energy storage technologies as renewable energy projects, especially solar and wind, gain momentum. In Latin America, countries like Brazil and Chile are investing in CAES and thermal storage technologies to support their renewable energy grids. The Middle East, with its vast solar energy potential, is exploring thermal storage and hydrogen energy storage solutions as part of its long-term energy diversification plans.
New players such as Hydrostor and Peak Power Inc are leveraging advancements in technologies such as compressed air energy storage. This type of storage technology can storage energy in smaller spaces for longer periods. While dominating players such as Energy Vault, Inc. and ESS, Inc. stand out due to their extensive global energy storage systems infrastructure. Energy Vault's systems are cost-effective, with a lower cost per kilowatt-hour than other options. The company also encourage strategic partnerships in order to accelerate adoption of global energy storage providers of the company’s transformative technology.
CEO Statements
Malta Inc., Ramya Swaminathan, CEO
CellCube, Alexander Schoenfeldt, CEO
ESS, Inc., Eric Dresselhuys, CEO
Hydrostor, Curtis VanWalleghem, CEO
Strategic partnerships and acquisitions highlight the rapid advancements and collaborative efforts in the long duration energy storage industry. industry players are involved in various aspects of long duration energy storage, including production, storage technologies, and fuel cells, and play a significant role in advancing the market. some notable examples of key developments in the long duration energy storage industry include:
These developments underscore significant strides in advancing hydrogen infrastructure and technology, reflecting growing collaborations and strategic investments aimed at expanding the global hydrogen economy.
Market Segmentation
By Type
By Technology
By Application
By Region