Solar thermal energy is a technology that uses solar energy to generate heat. This heat can be used directly for hot water preparation, heating support, or even process heat in industry. It represents an environmentally friendly alternative to fossil fuels and helps to reduce energy costs.
How does solar thermal energy work?
Solar thermal energy is based on solar collectors that capture solar radiation and convert it into heat. The process works as follows:
- Capturing solar radiation: The collectors absorb the incoming solar radiation and convert it into heat.
- Heat transfer: A heat transfer medium (usually a special liquid) absorbs the heat and transfers it to a storage facility or directly to the consumer.
- Heat storage and use: The generated heat is stored and can be used for hot water or heating systems.
Advantages of solar thermal energy
- Cost savings: Heating costs are significantly reduced by using solar energy.
- Sustainability: Solar thermal energy is an emission-free technology that contributes to reducing CO₂ emissions.
- Efficiency: Modern solar thermal systems have high efficiencies and can operate efficiently in many climate zones.
- Flexibility: Solar thermal energy can be used in single-family homes as well as in larger buildings or industrial plants.
- Independence: It reduces dependence on fossil fuels and rising energy prices.
Installation challenges
Installing solar thermal systems on roofs requires careful planning and high-quality components to ensure efficiency and safety. The following points are essential:
- Roof statics: Solar thermal systems can be heavier than photovoltaic systems and must be supported accordingly.
- Thermal insulation: The collectors and pipes must be well insulated to minimize heat loss.
- Roof sealing: As with photovoltaic systems, a secure seal is crucial to avoid water damage.
Solar thermal energy and the future of energy
The demand for solar thermal energy will continue to rise in the coming years because:
- Energy prices are rising: More and more households and businesses are looking for alternatives to fossil fuels.
- Sustainability is gaining in importance: Solar thermal energy is one of the cleanest technologies for generating heat.
- Technological advances: Improved storage technologies and higher efficiencies make solar thermal energy even more attractive.
- Climate goals: Countries worldwide are relying on renewable energies to improve their CO₂ balances.
CLEVER-TILE ® – Your solution for safe solar thermal installations
With CLEVER-TILE ®, we offer you a well-designed solution for the safe and efficient installation of solar thermal systems on roofs. Our products guarantee:
- Stable base: The load of the collectors is transferred directly into the roof structure without putting any strain on the roof tiles.
- Weather protection: Flexible EPDM molded parts ensure a reliable seal against rain, snow and wind.
- Easy installation: CLEVER-TILE ® is compatible with most common roof types and allows for quick installation.
Trust in quality and precision when installing your solar thermal system. Visit our CLEVER-TILE ® product page to learn more about our solutions! Together, we're shaping a sustainable energy future.
Referenced terms and sources
This existing glossary article was reviewed and approved on 14 October 2026. Time-sensitive information still refers to its original publication context unless the article states otherwise. It does not replace installation instructions or confirm compatibility with a particular roof tile model.
Machine-assisted translation. The German version remains available.
Data sheet and installation guideOriginal source