Thermal energy storage market seen nearly doubling by 2033

Global demand for thermal energy storage is rising as utilities, industrial facilities and building operators look for ways to store renewable power and cut energy costs. Allied Market Research says the market could grow from $25.6 billion in 2023 to $56.4 billion by 2033 as governments push decarbonization and grid modernization.

Why it matters: - Thermal energy storage can shift heat or cold for later use, helping balance electricity demand and reduce waste from intermittent solar and wind power. - The technology is becoming more important as countries, utilities and industries push toward lower-carbon energy systems and more resilient grids. - The market’s projected growth signals broader demand for long-duration storage beyond batteries.

What happened: - Allied Market Research says the global thermal energy storage market was valued at about $25.6 billion in 2023 and is projected to reach nearly $56.4 billion by 2033. - The forecast reflects steady growth through the period as renewable energy deployment and energy efficiency investments expand worldwide. - The report includes a downloadable PDF brochure and a purchase option for the full report.

The details: - Thermal energy storage systems store energy as sensible heat, latent heat or thermochemical energy. - Stored thermal energy can be used later for heating, cooling, industrial processes or electricity generation. - Utilities, industrial manufacturers, district heating operators and renewable energy developers are increasing investment in thermal storage. - Solar and wind growth is creating more periods of surplus power that can be shifted into thermal systems for later use. - Commercial buildings, manufacturing facilities and utility-scale power plants are adopting these systems to lower costs and improve efficiency. - Government incentives, subsidies, renewable energy targets and decarbonization programs are supporting adoption in developed and emerging markets. - The report says concentrated solar power projects benefit from molten salt storage, which can extend electricity generation after sunset. - The market is segmented by technology, storage material, application and end user. - Sensible heat storage remains the most widely used approach because it is mature and cost-effective. - Latent heat storage is gaining attention because of higher energy density and stronger performance characteristics. - Molten salt remains dominant in utility-scale applications, especially concentrated solar power. - Phase change materials are growing in popularity because they can store and release energy within specific temperature ranges. - Power generation is a major application, while heating and cooling uses are expanding quickly. - Residential, commercial, industrial and utility customers all contribute to demand. - Related demand for heat meters is rising as thermal energy storage grows, especially in district heating networks, commercial buildings and industrial facilities. - Smart heat meters can support real-time monitoring and help operators improve energy use.

Between the lines: - Thermal storage is competing with fast-improving battery systems, especially for short-duration applications. - The report suggests thermal systems still hold an edge in long-duration storage, industrial heat and large-scale energy management. - The strongest near-term opportunity appears to be in sectors where heat is a core input, not just electricity storage. - The market narrative is shifting from niche renewable support to broader energy infrastructure, including district heating, building efficiency and industrial decarbonization.

What’s next: - Growth is expected to accelerate in regions adding more renewables, modernizing grids and tightening carbon rules. - The report highlights the United States, China, India, Germany, France, the UK, Italy, GCC countries, Vietnam and South Africa as key opportunity markets. - High-temperature storage and cold thermal storage are likely to be important subsegments as industrial and cooling demand rises. - Future opportunities include building-integrated storage, smart city systems, renewable-powered district heating and hybrid thermal-battery solutions.

The bottom line: - Thermal energy storage is moving from a supporting role to a core piece of cleaner, more flexible energy systems as renewable power and industrial decarbonization scale up.