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Thermal Energy Storage Market

ID: MRFR/EnP/1772-HCR
132 Pages
Chitranshi Jaiswal
October 2025

Thermal Energy Storage Market Research Report By Technology (Molten Salt Storage, Water Thermal Storage, Phase Change Materials, Ice Storage), By Storage Capacity (Less than 100 MWh, 100-500 MWh, 500-1000 MWh, More than 1000 MWh), By Application (District Heating, Industrial Processes, Concentrated Solar Power, Building Heating and Cooling), By Material Used (Concrete, Steel, Natural Materials, Composite Materials) and By Regional (North America, Europe, South America, Asia Pacific, Middle East and Africa) - Forecast to 2035

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Thermal Energy Storage Market Summary

As per MRFR analysis, the Thermal Energy Storage Market Size was estimated at 267.39 USD Billion in 2024. The Thermal Energy Storage industry is projected to grow from 308.04 USD Billion in 2025 to 1268.25 USD Billion by 2035, exhibiting a compound annual growth rate (CAGR) of 15.2 during the forecast period 2025 - 2035.

Key Market Trends & Highlights

The Thermal Energy Storage Market is poised for substantial growth driven by technological advancements and increasing integration with renewable energy sources.

  • North America remains the largest market for thermal energy storage, driven by significant investments in energy infrastructure.
  • Asia-Pacific is emerging as the fastest-growing region, reflecting a rising demand for sustainable energy solutions.
  • Molten salt storage continues to dominate the market, while water thermal storage is rapidly gaining traction as a preferred option.
  • The market is propelled by the rising demand for energy efficiency and a growing focus on sustainability.

Market Size & Forecast

2024 Market Size 267.39 (USD Billion)
2035 Market Size 1268.25 (USD Billion)
CAGR (2025 - 2035) 15.2%

Major Players

Abengoa (ES), Siemens (DE), EnergyNest (NO), Danfoss (DK), Baltimore Air Coil (US), Ice Energy (US), SolarReserve (US), Azelio (SE), BrightSource Energy (US)

Thermal Energy Storage Market Trends

The Thermal Energy Storage Market is currently experiencing a notable evolution, driven by the increasing demand for energy efficiency and sustainability. This market encompasses various technologies that store thermal energy for later use, thereby optimizing energy consumption and reducing peak load demands. As industries and municipalities seek to integrate renewable energy sources, the relevance of thermal energy storage systems becomes more pronounced. These systems not only facilitate the use of solar and wind energy but also contribute to grid stability and reliability. Furthermore, advancements in materials and technology are enhancing the performance and cost-effectiveness of these storage solutions, making them more accessible to a broader range of applications. In addition to technological advancements, regulatory frameworks and government incentives are playing a crucial role in shaping the Thermal Energy Storage Market. Policymakers are increasingly recognizing the importance of energy storage in achieving climate goals and enhancing energy security. This has led to the implementation of supportive policies that encourage investment in thermal storage solutions. As a result, the market is poised for growth, with a diverse array of stakeholders, including utilities, commercial enterprises, and residential users, exploring the potential benefits of thermal energy storage. The future landscape appears promising, with ongoing innovations and a growing emphasis on sustainable energy practices likely to drive further expansion in this sector.

Integration with Renewable Energy Sources

The Thermal Energy Storage Market is increasingly aligning with renewable energy initiatives. As solar and wind energy generation becomes more prevalent, the need for effective storage solutions to manage intermittent supply is paramount. Thermal energy storage systems can capture excess energy produced during peak generation times and release it when demand is high, thus enhancing the overall efficiency of renewable energy systems.

Technological Advancements

Recent innovations in materials and system designs are transforming the Thermal Energy Storage Market. Enhanced thermal storage materials, such as phase change materials and advanced insulation technologies, are improving energy retention and reducing losses. These advancements not only increase the efficiency of storage systems but also lower operational costs, making thermal energy storage more appealing to a wider audience.

Regulatory Support and Incentives

Government policies and incentives are significantly influencing the Thermal Energy Storage Market. Many countries are implementing regulations that promote energy storage solutions as part of their broader energy transition strategies. This regulatory support is likely to encourage investments in thermal energy storage technologies, fostering market growth and facilitating the adoption of sustainable energy practices.

Thermal Energy Storage Market Drivers

Growing Focus on Sustainability

Sustainability has emerged as a central theme in the Thermal Energy Storage Market. With increasing awareness of climate change and environmental degradation, there is a pressing need for sustainable energy solutions. Thermal energy storage systems contribute to this goal by enabling the integration of renewable energy sources, such as solar and wind, into the energy mix. By storing energy generated from these sources, thermal energy storage helps to reduce reliance on fossil fuels and lower greenhouse gas emissions. The market for sustainable energy solutions is expanding, and thermal energy storage is positioned as a key player in this evolution, potentially leading to a more sustainable energy future.

Advancements in Material Technology

The Thermal Energy Storage Market is benefiting from advancements in material technology, which are enhancing the efficiency and effectiveness of thermal storage systems. Innovations in phase change materials and other storage mediums are enabling higher energy densities and improved thermal conductivity. These advancements not only increase the performance of thermal energy storage systems but also reduce costs associated with installation and maintenance. As a result, the market is witnessing a shift towards more efficient and cost-effective solutions. The ongoing research and development in material science are likely to drive further growth in the thermal energy storage sector, making it a more viable option for various applications.

Rising Demand for Energy Efficiency

The Thermal Energy Storage Market is experiencing a notable increase in demand for energy efficiency solutions. As energy costs continue to rise, industries and consumers alike are seeking ways to optimize energy consumption. Thermal energy storage systems allow for the storage of excess energy during off-peak hours, which can then be utilized during peak demand periods. This not only reduces energy costs but also alleviates stress on the grid. According to recent data, the energy efficiency market is projected to grow significantly, with thermal energy storage playing a crucial role in this transition. The ability to shift energy usage patterns is becoming increasingly vital, making thermal energy storage an attractive option for both commercial and residential applications.

Enhanced Grid Stability and Reliability

The Thermal Energy Storage Market plays a crucial role in enhancing grid stability and reliability. As energy demand fluctuates throughout the day, thermal energy storage systems provide a buffer that helps to balance supply and demand. By storing excess energy during low-demand periods and releasing it during peak times, these systems contribute to a more stable energy grid. This capability is particularly important as more intermittent renewable energy sources are integrated into the grid. The ability to maintain grid stability is becoming increasingly vital, and thermal energy storage is emerging as a key solution to address these challenges, potentially leading to a more reliable energy future.

Increased Investment in Energy Infrastructure

Investment in energy infrastructure is a significant driver for the Thermal Energy Storage Market. Governments and private entities are recognizing the need for modernized energy systems that can accommodate fluctuating energy demands and integrate renewable sources. This has led to increased funding for energy storage projects, including thermal energy storage systems. According to recent reports, investments in energy storage technologies are expected to reach unprecedented levels in the coming years. This influx of capital is likely to accelerate the deployment of thermal energy storage solutions, enhancing grid reliability and supporting the transition to a more resilient energy landscape.

Market Segment Insights

By Technology: Molten Salt Storage (Largest) vs. Water Thermal Storage (Fastest-Growing)

In the Thermal Energy Storage Market, the primary segment values include Molten Salt Storage, Water Thermal Storage, Phase Change Materials, and Ice Storage. Molten Salt Storage continues to dominate the market due to its widespread adoption in concentrating solar power plants, offering efficient heat retention and transfer capabilities. Water Thermal Storage follows closely, presenting significant potential, particularly in hydronic heating systems, which are increasingly favored in urban and industrial applications.

Technology: Molten Salt Storage (Dominant) vs. Water Thermal Storage (Emerging)

Molten Salt Storage stands out as the dominant technology in thermal energy storage, characterized by its ability to store heat at high temperatures, making it suitable for large-scale applications. It plays a pivotal role in enhancing the efficiency of renewable energy systems by storing excess thermal energy generated during peak production periods. On the other hand, Water Thermal Storage is emerging rapidly, favored for its simplicity and effectiveness in smaller systems. As municipalities focus on energy efficiency and sustainability, Water Thermal Storage solutions are being integrated into district heating schemes and residential buildings, driving growth and innovation in this segment.

By Storage Capacity: 100-500 MWh (Largest) vs. Less than 100 MWh (Fastest-Growing)

The Thermal Energy Storage Market exhibits a diverse distribution across its storage capacity segments. The 100-500 MWh capacity segment currently holds the largest market share, reflecting the increasing demand for large-scale energy solutions. In contrast, the segment of less than 100 MWh is emerging rapidly, driven by innovations in smaller storage solutions that cater to specific residential and small commercial applications. This shift indicates a broadening of market preferences as technology evolves and consumer needs diversify. Growth trends in the Thermal Energy Storage Market indicate a significant upward trajectory for both segments. The 100-500 MWh range benefits from large investments in utility-scale projects focused on optimization and reliability, while the less than 100 MWh segment is gaining momentum through advancements in modular and flexible storage technologies. Increasing reliance on renewable energy sources is further propelling these trends, as stakeholders seek to enhance energy efficiency and grid resilience through tailored thermal energy solutions.

100-500 MWh (Dominant) vs. Less than 100 MWh (Emerging)

The 100-500 MWh storage capacity segment is characterized by its robust presence in the thermal energy storage landscape, serving large grid operators and commercial enterprises that need efficient and reliable energy solutions. This segment supports applications that require significant thermal energy, often incorporating advanced technology to maximize performance and minimize losses. Conversely, the less than 100 MWh segment is emerging as a vital player, appealing particularly to residential and small business markets looking for smaller, more affordable thermal storage options. This shift towards lower capacity is mirrored by innovations that allow for localized energy management, enhancing energy independence and sustainability.

By Application: District Heating (Largest) vs. Building Heating and Cooling (Fastest-Growing)

In the Thermal Energy Storage market, the application segment displays a diverse distribution among its core values. District heating currently dominates the landscape, benefiting from its widespread use in urban areas to deliver thermal energy efficiently. Industrial processes also hold a significant share, leveraging thermal storage to optimize energy use and reduce costs. Building heating and cooling, while currently smaller, is witnessing rapid growth due to increasing demand for energy-efficient solutions and climate control in residential and commercial spaces. Concentrated solar power is recognized for its role in energy transition, capturing a notable portion but growing at a steadier pace.

District Heating (Dominant) vs. Industrial Processes (Emerging)

District heating remains the cornerstone of the Thermal Energy Storage market, characterized by its ability to deliver centralized thermal energy to multiple facilities through an extensive network. It provides a cost-effective and reliable energy solution for heating large urban areas, contributing to its dominance. In contrast, industrial processes are emerging as a key player, with businesses increasingly adopting thermal energy storage systems to enhance operational efficiency and reduce reliance on fossil fuels. This segment is bolstered by government incentives for sustainable practices and advancements in storage technologies, positioning it for substantial growth in the upcoming years.

By Material Used: Concrete (Largest) vs. Composite Materials (Fastest-Growing)

In the Thermal Energy Storage Market, the 'Material Used' segment is characterized by a diverse distribution where Concrete occupies the largest share due to its thermal stability and cost-effectiveness. Steel follows closely behind, known for its durability and strength, while Natural Materials and Composite Materials represent smaller but significant portions of the market. Composite Materials, with their unique properties, are rapidly gaining traction, appealing to sectors seeking innovation and efficiency.

Concrete (Dominant) vs. Composite Materials (Emerging)

Concrete remains the dominant material in thermal energy storage due to its unparalleled thermal mass and durability, making it ideal for large-scale storage applications. Its extensive availability and cost advantages further solidify its leading position. In contrast, Composite Materials are emerging as a notable alternative, especially in the pursuit of lighter and more efficient storage solutions. Their ability to combine various properties such as increased strength-to-weight ratios and improved thermal performance aligns with the growing demand for advanced materials in energy storage applications. This shift highlights a trend towards innovation, with Composite Materials expected to capture more attention in future projects.

Get more detailed insights about Thermal Energy Storage Market

Regional Insights

North America : Innovation and Investment Hub

North America is the largest market for thermal energy storage, holding approximately 45% of the global share. The region's growth is driven by increasing demand for renewable energy integration, energy efficiency initiatives, and supportive government policies. Regulatory frameworks, such as the Investment Tax Credit (ITC), further catalyze investments in thermal storage technologies, enhancing market dynamics. The United States is the leading country in this sector, with significant contributions from states like California and Texas. Key players such as Ice Energy and SolarReserve are actively involved in developing innovative solutions. The competitive landscape is characterized by collaborations between technology providers and utilities, aiming to optimize energy storage solutions and enhance grid reliability.

Europe : Sustainability and Innovation Leader

Europe is the second-largest market for thermal energy storage, accounting for around 30% of the global market share. The region's growth is propelled by stringent climate policies, ambitious renewable energy targets, and increasing investments in sustainable technologies. The European Union's Green Deal and various national incentives are pivotal in promoting thermal storage solutions, driving demand across member states. Leading countries include Germany, the UK, and France, where companies like Siemens and Danfoss are at the forefront of innovation. The competitive landscape is marked by a mix of established firms and startups, focusing on advanced thermal storage technologies. Collaborative projects and research initiatives are common, aiming to enhance efficiency and reduce costs in energy storage systems.

Asia-Pacific : Emerging Market with Potential

Asia-Pacific is witnessing rapid growth in the thermal energy storage market, holding approximately 20% of the global share. The region's expansion is driven by increasing energy demands, urbanization, and government initiatives promoting renewable energy. Countries like China and India are investing heavily in energy storage technologies to support their renewable energy goals and enhance grid stability, creating a favorable regulatory environment for market growth. China is the leading country in this region, with significant contributions from companies like EnergyNest and Abengoa. The competitive landscape is evolving, with both domestic and international players vying for market share. Collaborative efforts between governments and private sectors are fostering innovation and driving advancements in thermal energy storage technologies, positioning the region for future growth.

Middle East and Africa : Resource-Rich and Developing Market

The Middle East and Africa region is gradually emerging in the thermal energy storage market, currently holding about 5% of the global share. The growth is primarily driven by the need for energy diversification, increasing investments in renewable energy projects, and government initiatives aimed at enhancing energy security. Countries like the UAE and South Africa are leading the charge, with policies that encourage the adoption of energy storage technologies. The competitive landscape is still developing, with key players like BrightSource Energy and Azelio making strides in the market. The region's unique challenges, such as infrastructure development and regulatory frameworks, are being addressed through international partnerships and investments. As the market matures, opportunities for innovation and growth in thermal energy storage are expected to expand significantly.

Thermal Energy Storage Market Regional Image

Key Players and Competitive Insights

The competitive landscape of the Thermal Energy Storage Market is characterized by a diverse range of players, each contributing to the evolution of thermal energy storage technologies. This market includes various methodologies for storing heat energy, including sensible heat storage, latent heat storage, and thermochemical storage, primarily driven by the needs for renewable energy integration and grid stability. Factors such as technological advancements, governmental policies promoting sustainable energy solutions, and an increasing demand for energy efficiency are propelling participants to innovate and expand their offerings.

As competition intensifies, companies are focused on strategic partnerships, acquisitions, and the development of next-generation storage solutions to enhance their market presence and strengthen their positioning in this rapidly growing field.

SolarReserve stands out within the Thermal Energy Storage Market due to its specialized focus on concentrating solar power (CSP) systems that incorporate thermal storage capabilities. The company takes advantage of advanced technology that allows for energy to be stored as heat, which can be used when solar power is not available. This ability to deliver energy on demand, regardless of sunlight conditions, enhances SolarReserve's appeal. The integration of robust thermal energy storage solutions in CSP projects positions the company as a reliable contributor to the global shift towards renewable energy.

The strategic approach towards optimizing storage capacity and increasing energy efficiency boosts SolarReserve's strengths in sustainable energy generation, aiming to provide a consistent and reliable energy supply while minimizing carbon footprints.

General Electric brings a wealth of experience and a broad portfolio of solutions to the Thermal Energy Storage Market, particularly focusing on advanced energy generation and storage technologies. The company's key offerings include integrated thermal storage systems that are designed to enhance energy generation efficiency while reducing operational costs. General Electric's strength lies in its ability to leverage its vast engineering capabilities and global footprint to deliver innovative thermal storage solutions that meet diverse energy needs across different regions. The company's commitment to research and development, along with strategic alliances and mergers, allows it to enhance its service offerings continuously.

This positioning not only strengthens General Electric's competitive edge but also enables it to influence market dynamics significantly in favor of advanced energy storage solutions on a global scale.

Key Companies in the Thermal Energy Storage Market market include

Industry Developments

  • Q1 2025: Brenmiller Energy: Chairman and CEO Reflects on 2024 Milestones, Sets Sights on Capturing Sizeable Share of $63 Billion Thermal Energy Storage Market in 2025 Brenmiller Energy announced the operation of its TES gigafactory with a production capacity of up to 4 GWh of bGen™ systems, valued at up to $200 million, and is developing 7 projects globally while advancing a $440 million commercial pipeline for 2025.

Future Outlook

Thermal Energy Storage Market Future Outlook

The Thermal Energy Storage Market is projected to grow at a 15.2% CAGR from 2024 to 2035, driven by increasing demand for renewable energy integration and energy efficiency.

New opportunities lie in:

  • Development of advanced phase change materials for enhanced storage efficiency.
  • Integration of AI-driven analytics for optimized energy management solutions.
  • Expansion into emerging markets with tailored thermal storage systems.

By 2035, the market is expected to solidify its position as a cornerstone of sustainable energy solutions.

Market Segmentation

Thermal Energy Storage Market Technology Outlook

  • Molten Salt Storage
  • Water Thermal Storage
  • Phase Change Materials
  • Ice Storage

Thermal Energy Storage Market Application Outlook

  • District Heating
  • Industrial Processes
  • Concentrated Solar Power
  • Building Heating and Cooling

Thermal Energy Storage Market Material Used Outlook

  • Concrete
  • Steel
  • Natural Materials
  • Composite Materials

Thermal Energy Storage Market Storage Capacity Outlook

  • Less than 100 MWh
  • 100-500 MWh
  • 500-1000 MWh
  • More than 1000 MWh

Report Scope

MARKET SIZE 2024 267.39(USD Billion)
MARKET SIZE 2025 308.04(USD Billion)
MARKET SIZE 2035 1268.25(USD Billion)
COMPOUND ANNUAL GROWTH RATE (CAGR) 15.2% (2024 - 2035)
REPORT COVERAGE Revenue Forecast, Competitive Landscape, Growth Factors, and Trends
BASE YEAR 2024
Market Forecast Period 2025 - 2035
Historical Data 2019 - 2024
Market Forecast Units USD Billion
Key Companies Profiled Market analysis in progress
Segments Covered Market segmentation analysis in progress
Key Market Opportunities Integration of advanced materials enhances efficiency in the Thermal Energy Storage Market.
Key Market Dynamics Rising demand for renewable energy integration drives innovation and competition in the Thermal Energy Storage Market.
Countries Covered North America, Europe, APAC, South America, MEA

Market Highlights

Author
Chitranshi Jaiswal
Research Analyst Level I

In her 3 years of experience in the market research field, she has handled critical cross-domain projects. She has an in-depth knowledge of market estimation & analysis, problem-solving, primary as well as secondary research, and team management.She holds an engineering degree and is an MBA professional from a well-known university, capable of evaluating the market and competitive conditions. An exceptional strategist with excellent communication skills and a passion for delivering cutting-edge & practical insights for the market. Proficient in multi-tasking, and can successfully deal with competing demands, while maintaining complete confidentiality. Generated business through active client and project development, networking, and high-quality responses. Her knowledge and skills have helped in making solid business decisions, securing funding from investors, and avoiding business failures.

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FAQs

What is the current valuation of the Thermal Energy Storage Market?

The market valuation reached 267.39 USD Billion in 2024.

What is the projected market size for the Thermal Energy Storage Market by 2035?

The market is expected to grow to 1268.25 USD Billion by 2035.

What is the expected CAGR for the Thermal Energy Storage Market during the forecast period?

The market is projected to experience a CAGR of 15.2% from 2025 to 2035.

Which technology segment holds the highest market value in Thermal Energy Storage?

Ice Storage technology is valued at 117.39 USD Billion, indicating its significant market presence.

How does the market for Water Thermal Storage compare to other technologies?

Water Thermal Storage is valued at 60.0 USD Billion, showcasing its competitive position in the market.

What are the key applications driving the Thermal Energy Storage Market?

Building Heating and Cooling applications are projected to reach 87.39 USD Billion, highlighting their importance.

Which materials are predominantly used in Thermal Energy Storage systems?

Composite Materials dominate the market with a valuation of 147.39 USD Billion.

What is the market size for storage capacities of less than 100 MWh?

The market for storage capacities of less than 100 MWh is valued at 40.0 USD Billion.

Who are the leading players in the Thermal Energy Storage Market?

Key players include Abengoa, Siemens, EnergyNest, and Danfoss, among others.

What is the market valuation for Concentrated Solar Power applications?

The Concentrated Solar Power application segment is valued at 80.0 USD Billion.

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