Authors:
Ankit Gupta, Vinayak Shukla
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Thermal Energy Storage Systems Market Size & Share 2026 – 2034
Report ID: GMI2589
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Published Date: February 2025
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Thermal Energy Storage Systems Market Size
The thermal energy storage systems market was valued at USD 62.6 billion in 2025 and is estimated to grow at a CAGR of 5.3% from 2026 to 2034. The market is witnessing strong growth as rising electricity consumption, renewable energy integration, and grid modernization increase the need for reliable energy storage solutions.
Thermal Energy Storage Systems Market Key Takeaways
Growing power demand across industrial, commercial, and utility sectors is encouraging investments in advanced thermal storage technologies that improve energy efficiency and optimize electricity usage. In 2024, the U.S. had an electricity generation capacity of approximately 1.3 million MW (around 1,250 GW), highlighting the increasing requirement for efficient energy management systems. These factors continue to strengthen the thermal energy storage market size across developed and emerging economies.
Industries such as power generation, chemicals, food & beverages, manufacturing, and HVAC are increasingly adopting thermal energy storage systems to reduce operating costs, improve process efficiency, and manage peak electricity demand. Thermal energy storage enables surplus energy generated during off-peak periods or from renewable sources to be stored and utilized when demand is high or renewable generation declines. This capability enhances grid reliability while supporting the transition toward cleaner energy systems. The rapid expansion of solar and wind power, including the addition of approximately 17,000 MW of solar capacity in the U.S. during 2023, is further driving market demand.
Concentrated Solar Power (CSP) facilities remain among the largest adopters of thermal energy storage, particularly across the Middle East, North Africa, and the southwestern United States, where high solar irradiance supports continuous renewable power generation. Molten salt technology continues to dominate these applications, while innovations in phase change materials (PCMs), thermochemical storage, and other high temperature energy storage market solutions are significantly improving storage duration, efficiency, and operational flexibility for large-scale renewable energy projects.
Supportive government policies and clean energy investments are further accelerating market expansion. Regulations promoting energy efficiency, alongside initiatives such as the EU Energy Efficiency Directive and U.S. energy storage programs, are encouraging widespread deployment of advanced thermal storage technologies. In 2023, Europe invested more than EUR 105 billion in renewable energy, reinforcing long-term demand for thermal energy storage systems and creating significant growth opportunities for technology providers and infrastructure developers worldwide.
Market Dynamics
Drivers
The growing share of renewable energy in the global energy mix is accelerating demand across clean energy value chains as governments and businesses prioritize decarbonization, energy security, and long-term sustainability. Rising investments in solar, wind, hydropower, and energy storage projects, supported by favorable policies and net-zero commitments, are reshaping electricity generation worldwide. As renewable energy capacity expands, utilities and industrial operators are increasingly adopting advanced technologies to improve grid reliability, operational efficiency, and power management. Continuous innovation, declining technology costs, and large-scale renewable integration are further strengthening market growth, making renewable energy adoption a key driver of future investments while supporting the global transition toward a low-carbon energy ecosystem.
Reliable and efficient energy consumption is becoming a key priority across industrial, commercial, and utility sectors as organizations focus on lowering operating costs, improving energy efficiency, and meeting sustainability targets. The growing adoption of smart energy management systems, advanced power electronics, and renewable energy integration enables businesses to optimize electricity usage while ensuring a stable and uninterrupted power supply. Increasing investments in energy-efficient infrastructure, grid modernization, and digital monitoring technologies are further supporting this transition. As industries seek reliable energy solutions to reduce carbon emissions and enhance operational performance, demand for intelligent energy consumption technologies continues to rise, creating significant growth opportunities across global energy and power markets while supporting long-term energy security and cost optimization.
Opportunities
Technological advancements in materials are accelerating the growth of the market by improving product efficiency, durability, and overall performance across industrial applications. Continuous innovation in advanced materials, including high-strength composites, lightweight alloys, and next-generation engineered materials, enables manufacturers to develop more reliable, energy-efficient, and cost-effective solutions. These developments also support longer product lifecycles, reduced maintenance requirements, and enhanced operational safety, making them attractive for industries seeking improved productivity and sustainability. As companies continue investing in material science research and advanced manufacturing technologies, the adoption of innovative materials is expected to increase, strengthening market expansion while meeting evolving performance, environmental, and regulatory requirements across global industries.
Challenges
The high cost of transformers remains a significant challenge for utilities, industrial facilities, and power infrastructure developers, particularly in large-scale transmission and distribution projects. Rising prices of core materials such as copper and electrical steel, combined with increasing manufacturing, transportation, and installation expenses, continue to elevate the overall transformer cost and project investment. Advanced power transformers designed for grid modernization, renewable energy integration, and high-voltage applications also require sophisticated insulation and monitoring technologies, further increasing procurement costs. These financial barriers can delay infrastructure upgrades and limit adoption, especially in cost-sensitive regions. However, growing investments in efficient grid networks and expanding electricity demand are expected to support long-term market growth despite the higher upfront expenditure.
Thermal Energy Storage Systems Market Trends
The thermal energy storage systems industry is witnessing steady growth as governments and industries accelerate renewable energy adoption and invest in long-duration energy storage solutions. Rising deployment of concentrated solar power (CSP) plants and increasing demand for grid flexibility are strengthening the adoption of high temperature energy storage systems, particularly molten salt technologies. These systems can efficiently store heat for extended periods and supply energy when renewable generation declines, making them a key component of future low-carbon power infrastructure. As countries work toward ambitious clean energy targets, the high temperature energy storage market is expected to gain significant momentum across utility and industrial applications.
Cost-effective and energy-efficient storage materials are also driving market expansion. Phase Change Materials (PCMs) are widely used across the thermal energy storage systems market due to their ability to improve heating and cooling efficiency while reducing peak energy demand. PCMs are increasingly integrated into commercial and residential buildings, HVAC systems, and industrial processes, supporting energy conservation and operational efficiency. Their compact design, affordability, and high thermal performance continue to strengthen demand across both the high temperature energy storage system market and cold thermal energy storage market, where efficient temperature management is becoming increasingly important.
Leading companies are further advancing the market through continuous innovation and pilot-scale deployments. For example, Toshiba, Marubeni, and Chubu Electric Power introduced a rock-based thermal energy storage pilot facility in Yokohama with approximately 100 kWh of storage capacity, demonstrating the industry's focus on scalable and sustainable storage technologies. Such developments are enhancing commercial viability and encouraging broader adoption of next-generation thermal storage solutions.
Emerging economies including India, China, and Brazil are significantly increasing renewable energy capacity, creating substantial opportunities for thermal storage technologies. India's renewable energy roadmap targets 275 GW of wind and solar capacity alongside hydro and nuclear expansion, while China aims to achieve approximately 30 GW of installed energy storage by 2025 and 100 GW by 2030. These large-scale clean energy investments are expected to accelerate demand across the thermal energy storage systems market, including both high temperature energy storage systems and cold thermal energy storage market applications, supporting long-term market growth and energy transition objectives.
Thermal Energy Storage Systems Market Analysis
By Storage Material
The thermal energy storage systems industry was valued at USD 47.5 billion, USD 54.4 billion and USD 62.6 billion in 2023, 2024 and 2025 respectively. The industrial sector’s expansion, coupled with urbanization and rising electricity consumption, will be fueling the market growth in coming decades.
The molten segment is anticipated to reach more than USD 94 billion by 2034 and will significantly grow in coming years mainly due to the rising preference for renewable energy across the world. Renewable sources of energy are around 43% of total energy production in Europe in 2022, leading the continent in energy production.
The water (as a storage material) segment also holds around 2% market share due to growing utility across the sector. There are renewable energy projects, that are under construction, will be creating a strong need for energy storage systems. For instance, The EU is experiencing record-breaking solar capacity additions, with forecasts indicating over 60 GW of new solar PV installations in 2024 alone, surpassing previous years' records.
Similarly, PCM segment also carries high importance because of its multiple features in various end use industries. The rising number of projects are tremendously propelling the need for energy storage systems. In 2024, an energy supplier in Finland has announced the upcoming construction of an underground seasonal thermal energy storage facility, with a planned storage capacity of 90 GWh.
The other segments have considerable influence in the energy storage systems market in areas of efficiency, performance, and application versatility. The performance of material, which provides maximum efficiency, are best suited for super in industrial and utility applications.
By Technology
In the thermal energy storage systems market, the sensible heat segment has the majority of market share of over 98.8% in 2025 and will be further projected to grow in the coming years. It is mainly due to the significantly rising demand for energy across the world as well as growing industrialization and urbanization, helping market grow across the world.
The global market for thermal energy storage systems continues to be strong owing to the simultaneous efforts towards upgrading electrical grids, modernizing utilities and replacing inadequate infrastructure. In 2021, EU announced that it would invest 5.84 billion from CEF for the energy infrastructure projects for 2021-2027, which mainly has its focus on grid improvements.
The thermochemical segment carries significance with the increase in energy consumption all over the world. There is a rapid growth of innovation in the advanced technology. This facilitates the need for power distribution systems, in which energy storage systems plays a crucial role.
Countries in North America including U.S and Canada are also stepping ahead in this industry. There are multiple projects of cooling systems, that are under construction, driving the need for thermal energy storage systems. For instance, Toronto's Downtown Deep Lake Water Cooling System uses the water from Lake Ontario to cool over 100 downtown buildings. The system saves 90,000 megawatt hours of electricity use annually, roughly enough to power a town of 25,000.
By Regional Insights
The Asia Pacific thermal energy storage systems market in 2023, 2024 and 2025 was valued at USD 18.7 billion, USD 25.1 billion and USD 30.9 billion respectively. The developing countries in APAC including China, India, and Japan, witness massive electricity demand owing to the rising urbanization and industrialization. Therefore, the demand for the energy storage will be increasing its market across the Asia Pacific.
Supportive government policies and financial incentives are driving the growth of TES technology in the Asia Pacific region. Many governments are promoting TES as part of their energy efficiency and carbon reduction strategies. The International Energy Agency projects that over 6,000 GW of new renewable electricity generation will be required by 2040 to address increasing global net zero commitments and the retirement of fossil fuel-based energy generation.
Variable renewable energy (VRE) such as solar PV and wind are expected to form the majority of this growth, with an increasing focus on the need to firm supply to ensure stability of physical grid and market pricing. In the 2022 Integrated System Plan, AEMO forecasts that 2 GW of medium-depth (4-12 hour) storage is required by 2029 to address reliability needs of the NEM. These figures indicate that there will be huge demand for the thermal energy storage systems in coming years.
In China, TES is widely adopted in industrial manufacturing, district cooling, and cold storage applications. These industries require cost-effective thermal management solutions to enhance energy efficiency and reduce operational costs. China’s strong government support, increasing renewable energy integration, and growing industrial applications position it as a key market for Thermal Energy Storage Systems.
Thermal Energy Storage Systems Market Share
Top 4 companies including Siemens Gamesa, Baltimore Aircoil Company, CALMAC and Burns & McDonnell hold more than 40% market around the world.
Leading companies in the thermal energy storage systems market are strengthening their competitive position through continuous investments in research and development, advanced energy storage technologies, and strategic business expansion initiatives. Their focus on improving system efficiency, scalability, and cost-effectiveness is accelerating innovation across residential, commercial, industrial, and utility-scale applications. Market participants are also expanding their regional footprint to capture emerging opportunities in the US thermal energy storage market, Europe thermal energy storage market, APAC thermal energy storage market, and the India thermal energy storage market.
In addition, growing investments across the Germany thermal energy storage market, UK thermal energy storage market, France thermal energy storage market, Italy thermal energy storage market, China thermal energy storage market, Vietnam thermal energy storage market, GCC thermal energy storage market, and South Africa thermal energy storage market reflect the increasing adoption of thermal energy storage solutions driven by renewable energy integration, grid modernization, and decarbonization goals. Through strategic partnerships, product innovation, mergers and acquisitions, and geographic expansion, these companies continue to enhance their market presence, strengthen customer reach, and secure a larger share of the global thermal energy storage systems industry.
Thermal Energy Storage Systems Market Companies
Major players operating in the wire and cable industry are:
Thermal Energy Storage Systems Industry News
This thermal energy storage systems market research report includes in-depth coverage of the industry with estimates & forecast in terms of “USD Million and MW” from 2021 to 2034, for the following segments:
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Market, By Storage Material
Market, By Technology
Market, By Application
Market, By End Use
The above information has been provided for the following Regions and countries:
Table of Contents
Chapter 1 Methodology & Scope
Chapter 2 Executive Summary
Chapter 3 Industry Insights
Chapter 4 Competitive landscape, 2025
Chapter 5 Market Size and Forecast, By Storage Material, 2021 – 2034 (USD Million, MW)
Chapter 6 Market Size and Forecast, By Technology, 2021 – 2034 (USD Million, MW)
Chapter 7 Market Size and Forecast, By Application, 2021 – 2034 (USD Million, MW)
Chapter 8 Market Size and Forecast, By End Use, 2021 – 2034 (USD Million, MW)
Chapter 9 Market Size and Forecast, By Region, 2021 – 2034 (USD Million, MW)
Chapter 10 Company Profiles
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Research methodology, data sources & validation process
This report draws on a structured research process built around direct industry conversations, proprietary modelling, and rigorous cross-validation and not just desk research.
Our 6-step research process
1. Research design & analyst oversight
At GMI, our research methodology is built on a foundation of human expertise, rigorous validation, and complete transparency. Every insight, trend analysis, and forecast in our reports is developed by experienced analysts who understand the nuances of your market.
Our approach integrates extensive primary research through direct engagement with industry participants and experts, complemented by comprehensive secondary research from verified global sources. We apply quantified impact analysis to deliver dependable forecasts, while maintaining complete traceability from original data sources to final insights.
2. Primary research
Primary research forms the backbone of our methodology, contributing nearly 80% to overall insights. It involves direct engagement with industry participants to ensure accuracy and depth in analysis. Our structured interview program covers regional and global markets, with inputs from C-suite executives, directors, and subject matter experts. These interactions provide strategic, operational, and technical perspectives, enabling well-rounded insights and reliable market forecasts.
3. Data mining & market analysis
Data mining is a key part of our research process, contributing nearly 20% to the overall methodology. It involves analysing market structure, identifying industry trends, and assessing macroeconomic factors through revenue share analysis of major players. Relevant data is collected from both paid and unpaid sources to build a reliable database. This information is then integrated to support primary research and market sizing, with validation from key stakeholders such as distributors, manufacturers, and associations.
4. Market sizing
Our market sizing is built on a bottom-up approach, starting with company revenue data gathered directly through primary interviews, alongside production volume figures from manufacturers and installation or deployment statistics. These inputs are then pieced together across regional markets to arrive at a global estimate that stays grounded in actual industry activity.
5. Forecast model & key assumptions
Every forecast includes explicit documentation of:
✓ Key growth drivers and their assumed impact
✓ Restraining factors and mitigation scenarios
✓ Regulatory assumptions and policy change risk
✓ Technology adoption curve parameter
✓ Macroeconomic assumptions (GDP growth, inflation, currency)
✓ Competitive dynamics and market entry/exit expectations
6. Validation & quality assurance
The final stages involve human validation, where domain experts manually review filtered data to identify nuances and contextual errors that automated systems might miss. This expert review adds a critical layer of quality assurance, ensuring data aligns with research objectives and domain-specific standards.
Our triple-layer validation process ensures maximum data reliability:
✓ Statistical Validation
✓ Expert Validation
✓ Market Reality Check
Trust & credibility
Verified data sources
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GMI archive
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Parameters studied & evaluated
Every data point in this report is validated through primary interviews, true bottom-up modelling, and rigorous cross-checks. Read about our research process →