Soltec and Fraunhofer Collaborate on Solar Concentrator PV System

The Fraunhofer Institute for Solar Energy Systems (ISE) and Soltec have joined forces to develop a cutting-edge prototype of a two-axis sun tracker for a revolutionary generation of concentrator photovoltaic systems.

The innovative tracker, designed for the solar concentrator, is set to seamlessly integrate with Fraunhofer ISE’s latest micro-CPV technology, which efficiently concentrates sunlight onto high-performance cells.

Headquartered in Murcia, Spain, Soltec is a vertically integrated company renowned for manufacturing solar trackers for large-scale projects. On the other hand, Fraunhofer ISE boasts a rich research history in III-V and concentrator photovoltaics, with its latest micro-CPV technology achieving an impressive 36 percent conversion efficiency, resulting in a 30 percent increase in energy yield compared to traditional PV solutions.

The collaboration between Soltec and Fraunhofer ISE aims to leverage Soltec's solar tracker technology and tailor it to meet the specific demands of Fraunhofer ISE’s new micro-CPV modules, which operate at a concentration level of nearly 1000 suns. The micro-CPV modules necessitate precise tracking accuracy along two axes to ensure they continuously face the sun throughout the day for optimal electricity generation.

Dr. Frank Dimroth, the department head of III-V and Concentrator Photovoltaics at Fraunhofer ISE, expressed optimism about the collaboration, stating, “We are paving the way for the resurgence of high-concentration photovoltaics in the market by offering a competitive product that will impress investors with its high energy yield, durability, and sustainability.”

Highlighting the importance of resource efficiency in photovoltaics, Dr. Dimroth added, “Compared to current standards, our micro-CPV technology reduces module areas by 30 percent and semiconductor materials by 1300 times while maintaining comparable power output. This not only conserves valuable materials and energy during production but also enhances sustainability.”

Eduardo de San Nicolás, Chief Strategy and Innovation Officer at Soltec, emphasized the shared vision of both institutions, stating, “This collaboration between Soltec and Fraunhofer ISE reinforces our commitment to advancing solar energy utilization. We eagerly anticipate further collaboration to enhance the adoption of solar energy, opening up new possibilities across diverse sectors.”

The initial prototype will undergo rigorous testing to evaluate tracking accuracy throughout the day. In subsequent phases, the system can be outfitted with 15.7 kWp of micro-CPV panels.

The solar tracker plays a crucial role in power generation for concentrating PV modules, with the new development focusing on a blend of structural robustness, scalability, cost-effectiveness, and precise coordination of movements across a broad rotation range.

Moreover, the advanced concentrating photovoltaic system holds promise for emerging sector trends such as solar hydrogen generation and AgriPV, which integrates solar energy generation with agriculture. The tracker’s adaptability to various orientations and topographic conditions makes it well-suited for these applications. CPV modules not only capture diffuse sunlight but also provide plants with adequate light for growth while shielding them from excessive high-intensity radiation.

For more information, visit Soltec and Fraunhofer ISE.