Fraunhofer ISE develops lightweight agriPV modules to mount on crops

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Lightweight solar agriPV modules with weather protection covering cherry trees in Germany
A first pilot system above cherry trees at a fruit farm in southern Germany, pictured above, was implemented earlier in April 2025. Image: Fraunhofer ISE.

Scientists at the Fraunhofer Institute for Solar Energy Systems (ISE) and weather protection provider VOEN have developed lightweight modules for applications in the agrivoltaics (agriPV) sector.

The modules are light enough to be mounted on conventional weather protection systems for certain crops, such as fruit trees. The companies are also testing various solutions for attaching the lightweight modules to existing substructures and for new weather protection systems.

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A first pilot system above cherry trees at a fruit farm in southern Germany was implemented last week. The system installed covers two rows of cherry trees with a length of nearly 40 metres.

“The setup is incredibly simple, whether as a new build or retrofit solution,” said Leo Vöhringer, project manager at VOEN. “It was important to us to tailor an agriPV concept to fruit-growing practices, and not the other way around. Our concept maintains the established crop protection against weather and other damaging influences.”

During the times of the year that the weather protection is not required, it can be packed away and stored under the solar modules, according to Fraunhofer ISE. The project team will monitor the system’s electricity output and the cherry trees’ harvest throughout the year and will evaluate the data collected at the end of the year.

Within the project, the research team used specially developed software to simulate the optimal module size while still ensuring that the cherry trees’ yield is not affected by shading.

“The new concept addresses two factors that make agriPV systems more expensive than ground-mounted photovoltaics: the higher costs for constructing the mounting system and for installing the PV modules,” added Felix Basler, project manager at Fraunhofer ISE.

“In addition to developing the affordable lightweight modules, we designed and tested various solutions for their uncomplicated installation on traditional weather protection systems used in speciality crop cultivation.”

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