Molten Salt Thermal Energy Storage Market Size, Share, and Trends 2025 to 2034

Molten Salt Thermal Energy Storage Market Size and Forecast 2025 to 2034

The global molten salt thermal energy storage market size was estimated for USD 4.17 billion in 2024 and is anticipated to reach around USD 10.20 billion by 2034, growing at a CAGR of 9.35% from 2025 to 2034. The increasing adoption of renewable energy sources, the surge in electricity consumption, the rise in cost savings from energy storage systems, and rising government efforts to promote cleaner fuel are anticipated to propel the growth of the molten salt thermal energy storage market during the forecast period.

Molten Salt Thermal Energy Storage Market Key Takeaways

• Europe dominated the global molten salt thermal energy storage market with largest market share of 43% in 2024.
• North America is expected to expand at a solid CAGR during the forecast period.

How does Artificial Intelligence Impacts on Thermal Energy Storage?

The integration of artificial intelligence (AI) in molten salt thermal energy storage market holds great potential in ushering in a groundbreaking era of innovation and efficiency in the power sector. AI is widely used in thermal energy storage systems to improve their efficiency, sustainability, and reliability. AI's integration has unlocked unprecedented capabilities, allowing for predicting energy demand, real-time monitoring, optimizing charging and discharging, reducing operational costs, and maximizing renewable energy use. 

Several artificial intelligence (AI) techniques, such as artificial neural networks, particle swarm optimization, adaptive neuro-fuzzy inference systems, and support vector machines, have been widely explored in the field of energy storage. Therefore, AI integration has shown notable success as a crucial tool for governing, predicting, and optimizing thermal energy storage (TES) systems.

Europe Molten Salt Thermal Energy Storage Market Size and Growth 2025 to 2034

The Europe molten salt thermal energy storage market size was estimated at USD 1.79 billion in 2024 and is anticipated to be surpass around USD 4.39 billion by 2034, rising at a CAGR of 9.36% from 2025 to 2034. 

Europe dominated the global molten salt thermal energy storage market with largest market share of 43% in 2024, and is anticipated to do so again in the years to come. Large nations can effectively utilize solar energy projects in the region because it is located below the Tropic of Capricorn. With a 9-hour capacity for molten salt, Gujarat Solar One is the biggest parabolic trough in all of India. A two-tank indirect thermal storage method is employed. During the predicted period, molten salt storage is anticipated to be extended and constructed. One of the biggest users of the molten salt energy storage method worldwide is China. China had a share of more than half of the brand-new CSP projects around the globe in 2019 and increased its domestic capacity for power production by 200 MW. Therefore, due to a rise in power consumption and investments from both government and private players, molten salt thermal energy storage is anticipated to develop at the quickest rate in the Asia region throughout the projection period.

Europe accounted for a sizable portion. Due to strict government rules governing emission standards and the utilization of renewable energy sources, the molten salt thermal energy storage business in the area was launched early. The market for molten salt thermal energy storage at the time was dominated by North America, with the other regions scarcely having a presence. The majority of European nations view the storage of thermal energy in molten salt as an efficient way to increase power production and delivery. The area has an advantage in terms of the most recent innovations and important player representation due to the great significance given to technology by the region. Molten salt thermal energy storage is anticipated to be used in large-capacity energy storage facilities for thermonuclear and latent heat in Europe in the near future.

Market Overview

It is promoted as a trustworthy option that may be included in a variety of applications, such as maintaining a secure power supply in various end-use sectors. Companies in the molten salt thermal energy storage business are seizing this chance to diversify their offerings since the energy sector is always working to lower its high CO2 emissions. Molten salt thermal energy storage is being used to stabilize the grid since renewable energies, such as wind and solar power, are associated with volatility in the supply of electricity.

Molten Salt Thermal Energy Storage Market Growth Factors

Companies in the worldwide molten salt thermal energy storage market are analyzing micro- and macroeconomic factors to maintain company continuity in the face of the current coronavirus outbreak. Molten salts has a significant part in the optimization of energy in industrial operations.

Despite growing in popularity as a useful thermal energy storage alternative, molten salts tend to harden in pipes in the non-presence of heat due to their relatively high melting point. Because of this, market players s in the worldwide molten salt thermal energy storage market are starting to realize how crucial it is to implement an anti-freeze system. Molten salt nano-composites which are based on nanodiamonds offer fascinating potentials as fluids for heat transfer and thermal energy storage medium. They are innovative and economically advantageous. The development of the worldwide molten salt thermal energy storage market depends on the solar energy sector's growth. As the energy segment welcomes a variety of usage, new prospects for the generation of renewable energy have developed. The energy industry wants to provide more infrastructure for the production of renewable energy. The energy produced by these subsidiary platforms may be used by offshore wind farms, big solar facilities, and biofuel production facilities.

• Since the energy industry is always working to reduce its huge CO2 emissions, companies in the molten salt thermal energy storage market are utilizing this chance to grow their services. Since renewable energies including wind and solar power are linked to changes in the electricity supply, the grid is stabilized using molten salt thermal energy storage.
• Molten salts have the capacity to create dependable power generation or energy storage solutions, enabling customers to reduce energy costs and carbon emissions also enhancing the security of their energy supply.
• Trends in decarbonized power generation and long-term storage of renewable energy are driving the growth of the market for molten salt thermal energy storage. 
• Government financing and research and development projects on high priority, notably for molten salt thermal energy storage, are boosting the need for variable renewable energy. Molten salts help in the storage of thermal energy for usage during times with little or no sunshine. 
• Thermal energy storage in molten salt has a unique benefit for the power industry. It can be utilized to strengthen or supplement existing energy transmission and distribution systems. Since there is a critical need for stronger electrical transmission and distribution infrastructure, this component is sought in many regions.

Market Scope

Market Dynamics

Key Market Drivers

Increasing demand for new sources of renewable energy

• As fossil fuel sources continue to disappear, a serious energy crisis is affecting the whole planet. Environmentalists and energy experts have created reliable techniques for the production of renewable energy as a result of this aspect. As a result, it is anticipated that the worldwide MSTES market would grow at a healthy rate in the near future. The switch from non-renewable to renewable sources of energy may be credited to the MSTES market's remarkable yearly growth rate.
• Molten salt thermal power stations have come under the limelight due to the necessity to supplement massive solar power facilities. It is anticipated that regional and international organizations would make large investments in the energy industry. Additionally, it is predicted that the MSTES market would be driven in the near future by an increase in the need for power throughout the industrial sector.

Service providers reducing carbon emissions to transform the energy sector

• The deployment of effective storage systems by service providers helps to stabilize grids in varied places, improve base-load capacities, and supply dependable power in response to demand. To assist clients lower their energy expenditures and carbon emissions along with enhancing the security of their energy supply, molten salts have the potential to offer reliable power generating and energy storage technologies. Companies in the molten salt thermal energy storage sector are seeing revenue potential as a result of next-generation molten salt reactor technologies. By offering complete engineering, procurement, and construction services to clients, consumers, and partners, market participants have the potential to alter the energy industry.

Key Market Challenges

High cost

• The cost of thermal energy storage solutions varies on the technology used for thermal insulation, the application, and the size. In general, the price of the storage capacity provided by molten salt thermal energy storage systems based on phase transition materials and thermochemical storage is greater. Approximately 30–40% of the system's overall cost goes toward the storage system. Molten salt thermal energy storage systems are anticipated to become more competitive in the near future as a result of further research on energy storage technologies to lower initial capital needs.

Key Market Opportunities

Development of power transmission systems

• Progress in the area of power supply is a crucial factor in the expansion of the global MSTES market. The development of the worldwide MSTES market may be aided by the presence of a reliable energy transmission infrastructure. Additionally, reliable transmission and distribution networks inspire investors to place money in the renewable energy industry. Another important factor driving the growth of the global MSTES market is the speed of industrialization.

Anti-freeze system installation may be able to prevent the solidification of molten salts.

• The most popular material for huge temperature applications, like storing thermal energy for electricity production in concentrating solar power facilities, is molten salt. The comparatively high melting point of these salts, despite their large volumetric capacity of heat, causes them to harden in pipes without a heat source. As a result, market participants are spreading more information on the fixing of anti-freeze systems.
• Increases in the stable limit of nitrates' higher temperatures have not received much attention. Additionally, results obtained with cations other than those found in alkali metals result in a reduction in thermal stability. Researchers suggested a solution to this issue is to contain the molten salt in a regulated environment that permits a rise in the partial pressure of oxygen.

Technology Insights

The parabolic trough, which competes with solar power tower technology, is one of the most effective methods for molten salt storage. 2019 has already seen the installation of several different parabolic trough molten solar energy storage systems throughout the world. Solar concentrating structures that use the shape of parabolic collectors are constructed of reflective materials. The salt melts as a result of the collectors' reflection of the solar energy that strikes it. The market is predicted to grow as a result of the push needed to lower the price of the energy produced from molten salt, which may be provided by various types of reflecting material and molten salt. In China's Gansu Province, a parabolic trough molten salt solar project is being built with an expected 100 megawatts of electricity production (MW). It can sustain electricity for seven hours without a source because to its molten salt storage system. With several concentrated solar power plants spread out across the nation and major solar industry players like Abengoa SA, Acciona, and, SA, Spain led the molten salt trough parabolic trough market in 2019. Therefore, it is anticipated that molten salt thermal energy storage with parabolic troughs would expand throughout the projected period due to the rise in power demand and the rising efficacy of molten salts and reflecting materials.

Molten Salt Thermal Energy Storage Market Companies

• Yara International ASA
• Acciona S.A.
• Abengoa SA
• BrightSource Energy Inc.
• SENER Grupo de Ingenieria S.A.
• SolarReserve LLC
• Engie SA
• ACWA Power
• KVK Energy Ventures Ltd.

Recent Developments

• In January 2025, Hyme Energy, a leader in thermal energy storage technology, collaborated with Arla, one of the world’s leading dairy producers, to develop the largest industrial thermal storage system globally. The project, being matured for Arla’s milk powder facility in Holstebro, Denmark, aims to deliver cost-effective CO2 reductions in industrial heat production and marks a significant step in Hyme’s commercialization journey.
• In May 2024, Saudi Arabian oil firm Aramco entered into a memorandum of understanding (MOU) with Rondo Energy, a thermal energy storage company, following an equity investment. The two companies have started engineering studies for an ‘industrial scale’ deployment of Rondo’s Heat Battery technology to reduce emissions at Aramco facilities, with a ‘subsequent scale up to 1GWh’.

Segment Covered in the Report

By Technology

• Parabolic Troughs
• Fresnel Reflector
• Power Tower

By Geography

• North America
• Europe
• Asia-Pacific
• Latin America
• Middle East & Africa (MEA