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, as reported in the latest study by Global Market Insights, Inc.
Thermal Energy Storage Systems (TESS) are innovative technologies designed to store thermal energy for use later, enabling more efficient management of heating and cooling demands. By storing excess heat or cold during periods of low energy demand and releasing it during peak consumption, these systems improve energy efficiency, reduce operational costs, and enhance grid stability. Common technologies include sensible heat, latent heat, and thermochemical storage, each suited to different industrial and commercial applications. Thermal energy storage systems are increasingly deployed in renewable energy projects, district heating and cooling networks, industrial facilities, and power generation plants, supporting decarbonization efforts, optimizing energy utilization, and contributing to a more reliable and sustainable energy ecosystem.
Growing electricity demand is a primary factor fueling market growth, with industries increasingly turning to thermal energy storage to optimize energy use and reduce costs. The rising adoption of energy management solutions across power generation, chemical processing, food and beverages, and HVAC industries is driving market expansion. These industries are integrating thermal storage to enhance efficiency and lower operational expenses, leading to a surge in global electricity consumption. The technology enables surplus energy storage during peak production periods, ensuring a stable supply when renewable sources are unavailable. With increasing energy production from wind and solar power, the need for reliable storage solutions continues to rise.
Top 10 Growth Drivers of the Thermal Energy Storage Systems Market
-
Increasing integration of renewable energy (solar and wind)
-
Rising demand for grid flexibility and energy reliability
-
Growing focus on industrial decarbonization
-
Expansion of district heating and cooling networks
-
Stringent government energy efficiency and carbon reduction regulations
-
Increasing adoption of concentrated solar power (CSP) projects
-
Growing deployment of HVAC thermal storage solutions in commercial buildings
-
Advancements in phase change materials (PCM) and molten salt technologies
-
Rising electricity demand and peak load management requirements
-
Increasing investments in long-duration energy storage infrastructure
Thermal energy storage is a key enabler of grid stability, particularly as renewable energy adoption accelerates. Molten salt-based systems are becoming the preferred choice in energy storage due to their ability to provide consistent electricity output. Advancements in phase change materials, thermochemical storage, and molten salt solutions are further improving efficiency and storage capacity. Governments worldwide are implementing stringent energy efficiency regulations, directing significant investments into the sector. In 2023, Europe allocated over USD 105 billion toward renewable energy projects, reinforcing the demand for thermal storage solutions.
The molten salt segment is expected to surpass USD 94 billion by 2034, driven by the growing emphasis on renewable energy integration. Sensible heat storage accounted for over 98% of the market share in 2024 and is projected to expand further, supported by increasing global energy consumption, industrialization, and urbanization. These factors continue to drive the need for efficient storage technologies worldwide.
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.
Source: https://www.gminsights.com/industry-analysis/thermal-energy-storage-market
