In the relentless pursuit of cost-effective renewable energy solutions, researchers are turning their attention to the humble heliostat, a critical component in concentrated solar power (CSP) plants. A recent study presented at the SolarPACES Conference Proceedings, titled “Materials Comparison for Reducing Heliostats Production Costs,” offers a promising avenue for significant cost reduction in CSP technology. The lead author, Javier Martell from Sandia National Laboratories, and his team have been exploring the potential of composite materials to replace the traditional steel used in heliostat construction.
The study, which compares the structural vibration response of various materials, including Steel AISI 1020, Glass Fiber Reinforced Polymer (S-Glass and E-Glass), Basalt Fiber Reinforced Polymer, and Carbon Fiber Reinforced Polymer, presents a compelling case for a material shift. “The cost of installation for a commercial heliostat is substantial, and around 31% of that cost comes from manufactured parts, with steel being a significant contributor,” Martell explains. “By exploring alternative materials, we aim to reduce these costs and improve the overall efficiency of CSP plants.”
The implications of this research are substantial for the energy sector. CSP technology offers a unique advantage in the renewable energy landscape due to its ability to provide controllable, rapid heating and thermal energy storage. However, the high cost of heliostats has been a barrier to its widespread adoption. “If we can reduce the cost of heliostats, we can make CSP a more competitive option in the renewable energy market,” Martell states. This could potentially accelerate the transition to renewable energy sources, contributing to global efforts to mitigate climate change.
The study’s findings suggest that composite materials could offer a viable alternative to steel, with potential benefits including reduced weight, improved durability, and lower maintenance costs. “The use of composite materials could also help mitigate the price volatility associated with steel,” Martell adds. This could lead to more stable production costs and improved project financing for CSP plants.
The research by Martell and his team at Sandia National Laboratories is a significant step forward in the quest for cost-effective renewable energy solutions. As the energy sector continues to evolve, the insights gained from this study could shape the future of CSP technology, making it a more attractive option for investors and energy providers alike. The SolarPACES Conference Proceedings, where this research was presented, serves as a platform for such innovative ideas, fostering collaboration and driving progress in the field of solar energy.