Solar Power

Obtain the best results with high stability Caltherm heat transfer fluids

Thermodynamic solar energy is set to play a significant role in the electricity market: it will account for 11% of world production by 2050. The transformation of solar energy into "transportable" electric energy requires installations able to tolerate very high temperatures.


In solar power plants with cylindrical parabolic mirrors, the solar radiation is concentrated on pipes filled with a heat transfer fluid warmed up to extremely high temperatures above 350°C. This liquid carries the thermal energy to a steam generator. The steam activates turbines that drive alternators to produce electricity.


The Caltherm range precisely meets technical concerns of the solar energy sector by offering heat transfer fluids resistant to temperatures of up to 400°C with maximum pressures of less than 15 bars. Today, Caltherm C66 and Caltherm BO 400 are the most widely used products. To increase the durability and the operating temperature range of the heat transfer fluids, Caltherm R&D teams are currently working on the development of a high-end silicone technology.

Product Portfolio

Explore our specialized selection of thermal fluids, designed to deliver efficient performance and reliability for your industry's specific needs.

Caltherm 380                                                       

• Good thermal transfer
• Excellent thermal stability
• Very high resistance to oxidation
• Slightly clogged

Learn more
Caltherm BO 400                                                       

• Very good resistance to oxidation
• Excellent pumpability
• Low viscosity
• Low circuit fouling

Learn more
Caltherm C66

• Very good resistance to oxidation
• Excellent pumpability
• Slightly clogged
• No damage to the seals

Learn more

Services we provide

Caltherm offers a wide range of comprehensive services to ensure the successful implementation and maintenance of heat transfer fluids.

These services include a diagnostic analysis kit to collect fluid samples, engineering solutions tailored to specific project requirements, on-site assistance during installation, research and development for innovative non-toxic thermal fluids, and cleaning solutions to maintain optimal fluid quality.

With nearly 20 countries of presence, Caldic can offer speed and reliability in the supply chain, while their local representatives work with customers to optimize costs and develop customized packaging.

Connect With Us

Discover the Future of Heat Transfer Solutions with Caldic

At Caldic, we understand that every operation is unique, and finding the perfect heat transfer fluid is crucial for efficiency and longevity. Our experts are dedicated to helping you navigate our extensive range of high-quality heat transfer fluids to find the one that fits your specific needs. Whether you're looking to optimize your current system or explore solutions for a new project, let us assist you in making an informed decision.


By filling out the contact form on our website, you will receive a personalized guide that will help you enhance your systems and processes.


Reach out to us today, our team is ready to provide you with the insights and support you need.