Solar power can melt steel and concrete.

By Oliver Townsend May 19, 2024
New tech melts steel and concrete using only solar energy.jpegOrginal image from:

Revolutionizing the heavy industry sector, a groundbreaking technology has emerged that melts steel and concrete using only solar energy. In a world moving away from fossil fuels, this innovative method harnesses the power of the sun to achieve temperatures over 1,800°F (1,000 degrees Celsius), offering a sustainable alternative for essential high-temperature processes in steel and cement production.

The Power of Solar Energy in Industrial Applications

This cutting-edge technology, developed by researchers in Switzerland, utilizes synthetic quartz to trap solar energy efficiently at extreme temperatures. By combining a semitransparent quartz rod with an opaque silicon disk, the setup can reach and maintain a remarkable temperature of 1,922°F (1,050°C) at the energy absorber plate. This demonstrates the efficiency and potential of the thermal-trap effect in practical applications, showcasing the promise of solar energy in heavy industries.

The Game-Changing Potential of Solar Technology

Lead researcher Emiliano Casati highlights the significance of this technology, emphasizing its ability to achieve high temperatures well above 1,000°C (1,800°F). This surpasses previous research efforts, marking a crucial step towards demonstrating the viability of solar thermal trapping for real-world industrial use. The team’s simulations show that this thermal trapping method can achieve target temperatures more efficiently and with higher thermal efficiency, outperforming conventional receivers in industrial settings.

Sustainability and Future Applications

With foundational research in place, Casati and his team are now focusing on refining this technology and exploring new applications. By experimenting with different materials and demonstrating the ability to reach even higher temperatures, the versatility of semitransparent materials in absorbing solar radiation is becoming increasingly evident. This technology holds immense potential for sustainable energy solutions and has the capacity to revolutionize traditional industrial processes.

Advancing Solar Thermal Energy Adoption

As the potential of solar thermal energy grows, raising awareness and educating stakeholders about its benefits becomes essential for widespread adoption. Educational initiatives, workshops, and community programs play a critical role in promoting sustainable energy solutions and highlighting the environmental advantages of solar technology. By harnessing the power of the sun and minimizing heat loss, this innovative technology is paving the way for a greener, more sustainable future.


The breakthrough in solar technology that can melt steel and concrete using only solar energy represents a significant step towards cleaner, more sustainable industrial processes. By leveraging the power of the sun, researchers are transforming heavy industries and offering a sustainable alternative to carbon-intensive fossil fuels. As efforts continue to optimize this technology for large-scale implementation, the potential for solar energy to replace traditional fuels in challenging industrial applications grows ever closer, promising a cleaner, greener world for generations to come.

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