Top 10 Companies Driving the Calcium Chloride (CaCl?) Dihydrate Phase Change Material (PCM) for Thermal Storage Market (2026): Market Leaders Powering Global Adoption

MARKET INSIGHTS

Global Calcium Chloride (CaCl₂) Dihydrate Phase Change Material (PCM) for Thermal Storage Market size was valued at USD 285.4 million in 2025. The market is projected to grow from USD 308.6 million in 2026 to USD 621.3 million by 2034, exhibiting a CAGR of 8.1% during the forecast period.

Calcium Chloride Dihydrate (CaCl₂·2H₂O) is an inorganic salt hydrate widely recognized as one of the most effective phase change materials for low‑temperature thermal energy storage applications. With a melting point of approximately 29 °C and a latent heat capacity of around 190 kJ kg⁻¹, it absorbs and releases substantial amounts of thermal energy during phase transitions, making it particularly well‑suited for building climate control, cold chain logistics, solar energy storage, and HVAC systems. Its relatively low cost, natural abundance, and high energy storage density position it as a commercially attractive PCM compared to organic alternatives.

The market is witnessing accelerating momentum driven by global decarbonization targets, rising energy costs, and expanding renewable energy integration, all of which require efficient thermal buffering solutions. Furthermore, growing construction activity focused on net‑zero buildings and green infrastructure is creating consistent upstream demand. Primary growth enablers include Entropy Solutions, Rubitherm Technologies GmbH, Phase Change Energy Solutions, and Croda International Plc, among others contributing to product innovation and expanded commercial deployment.

Calcium Chloride (CaCl?) Dihydrate Phase Change Material (PCM) for Thermal Storage Market – View in Detailed Research Report

Top 10 Companies Driving the Calcium Chloride PCM Market

1. BASF SE

   Headquarters: Ludwigshafen, Germany
   Key Offering: High‑purity CaCl₂·2H₂O for bulk and encapsulated PCM solutions

   BASF leverages its extensive chloride chemistry expertise to supply PCM at scale, supporting integration into building panels and industrial heat exchangers. The company’s long‑standing commitment to sustainable manufacturing and circular material flows enhances its reputation among energy‑conscious buyers.

   Sustainability & Growth Initiatives

   • Investing in low‑energy crystallisation processes
   • Partnerships with European green building certification bodies
   • Development of corrosion‑resistant containment materials

2. Rubitherm Technologies GmbH

   Headquarters: Leinfelden‑Echterdingen, Germany
   Key Offering: Proprietary PCM blends and encapsulated modules for HVAC and solar thermal applications

   Rubitherm focuses on high‑performance PCM formulations that minimise supercooling and phase segregation. Its modular product line enables rapid deployment in retrofit projects and new construction.

   Sustainability & Growth Initiatives

   • Zero‑emission production facilities
   • Integration of PCM into district heating networks
   • Collaboration with German energy agencies on demand‑side management

3. Axiotherm GmbH

   Headquarters: Stuttgart, Germany
   Key Offering: Nucleating agent‑enhanced PCM for precision thermal management

   Axiotherm’s research‑driven approach delivers PCM that stabilises crystallisation, reducing energy losses in high‑precision cooling systems.

   Sustainability & Growth Initiatives

   • Research partnerships with Fraunhofer institutes
   • Certification of PCM modules for LEED‑qualified projects
   • Development of bio‑based additives to lower environmental impact

4. Phase Change Energy Solutions

   Headquarters: San Diego, United States
   Key Offering: Customised PCM formulations for industrial and data‑centre thermal storage

   The company specialises in scalable PCM solutions that can be integrated into heat‑pipe networks, providing reliable load‑shifting for high‑density computing environments.

   Sustainability & Growth Initiatives

   • Carbon‑neutral manufacturing plants
   • Active participation in U.S. energy‑efficiency standards
   • Collaboration with cloud‑service providers on thermal optimisation

5. Entropy Solutions

   Headquarters: Seattle, United States
   Key Offering: Encapsulated PCM panels for building envelopes

   Entropy’s encapsulation technology prevents phase segregation, extending the operational life of PCM modules in commercial buildings.

   Sustainability & Growth Initiatives

   • Partnerships with green‑building certification organisations
   • Investment in smart‑building integration platforms
   • Support for low‑carbon retrofit programmes in North America

6. Microtek Laboratories

   Headquarters: Houston, United States
   Key Offering: Micro‑encapsulated PCM slurry for HVAC heat‑transfer systems

   Microtek’s micro‑encapsulation delivers high surface area and rapid thermal response, ideal for precision cooling in data‑centre and industrial settings.

   Sustainability & Growth Initiatives

   • Use of recycled polymers in encapsulation shells
   • Collaboration with HVAC equipment manufacturers on energy‑efficiency upgrades
   • Research into biodegradable PCM additives

7. Croda International Plc

   Headquarters: London, United Kingdom
   Key Offering: Bulk CaCl₂·2H₂O for commercial and industrial PCM applications

   Croda supplies high‑purity PCM to large‑scale projects, ensuring consistent thermal performance across diverse environments.

   Sustainability & Growth Initiatives

   • ISO 14001 certification across production sites
   • Support for European green‑building incentives
   • Investment in low‑emission logistics

8. Climator Sweden AB

   Headquarters: Stockholm, Sweden
   Key Offering: Integrated PCM‑board solutions for building walls and ceilings

   Climator’s boards embed PCM directly into construction materials, enabling passive temperature regulation without separate modules.

   Sustainability & Growth Initiatives

   • Use of renewable‑energy‑powered manufacturing
   • Certification for Nordic green‑building standards
   • Collaboration with Swedish municipalities on energy‑efficient housing

9. Calcium Cloride Solutions Ltd.

   Headquarters: Singapore
   Key Offering: Customised PCM blends for cold‑chain packaging and solar thermal storage

   Calcium Cloride Solutions provides tailored PCM formulations that balance cost and performance for logistics and renewable‑energy markets.

   Sustainability & Growth Initiatives

   • Partnerships with ASEAN logistics firms on temperature‑controlled transport
   • Development of recyclable PCM containers
   • Active engagement with Singapore’s Green Building Index

10. BioPCM Technologies

    Headquarters: Toronto, Canada
    Key Offering: Bio‑based PCM additives for enhanced thermal stability

    BioPCM focuses on bio‑derived nucleating agents that reduce supercooling while maintaining high latent heat, appealing to environmentally conscious markets.

    Sustainability & Growth Initiatives

    • Research collaborations with Canadian universities
    • Support for Canada’s net‑zero building targets
    • Use of sustainably sourced feedstock for PCM additives

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Outlook

From 2026 to 2034, the Calcium Chloride PCM market is expected to maintain a steady trajectory, driven by the need for low‑temperature thermal storage in building and logistics sectors. The forecast suggests that adoption will be reinforced by policy incentives, especially in regions pursuing net‑zero targets, and by the maturation of encapsulation technologies that reduce phase‑segregation risk.

Future Trends

• Increased integration of PCM modules into smart‑building platforms that manage HVAC loads in real time.
• Expansion of micro‑encapsulated PCM solutions for data‑centre cooling and advanced electronics.
• Growth in solar‑thermal systems that pair PCM storage with photovoltaic or concentrated‑solar collectors.
• Development of recyclable and bio‑based PCM additives to address environmental concerns.
• Adoption of standardized testing protocols to accelerate commercial deployment across regulated sectors.