Agrivoltaik: Solarstrom & Landwirtschaft – Doppelter Ertrag!

This article provides an in-depth overview of agrivoltaics (also written agrivoltaik), the integrated use of agricultural land for both crop production and photovoltaic energy generation, explaining how the dual use of land can increase overall land-use efficiency and contribute to sustainable, local energy supply. It begins by defining agrivoltaics as systems where solar panels are installed above or within working agricultural areas—ranging from elevated, widely spaced arrays that allow machinery and crops to coexist beneath them, to semi-shaded installations adapted for specialty crops, and to flexible, mobile setups that can be adjusted seasonally. The article outlines the principal benefits: co-generation of renewable electricity while maintaining or even improving agricultural yields, diversification and stabilization of farm income through additional revenue streams from electricity production, and potential microclimatic benefits such as reduced evapotranspiration and shading that can mitigate heat stress for plants in hot or drought-prone regions. The piece reviews evidence from pilot projects and scientific studies showing that certain crops—shade-tolerant vegetables, berries, herbs, and some perennial crops—can perform as well under agrivoltaic installations as in full sun, and that microclimate moderation often leads to reduced irrigation needs and improved crop quality in some contexts. It explains design considerations that affect outcomes: panel height and spacing to allow farm machinery access and adequate light for crops, panel orientation and tracking to optimize energy yield while managing light distribution, and crop selection tailored to the shading regime. The article addresses economic and policy dimensions, describing how agrivoltaics can make local energy systems more resilient and profitable for farmers, but noting barriers such as higher upfront costs, regulatory hurdles regarding land-use and grid connection, and the need for supportive policy frameworks and subsidy schemes. Technical challenges are discussed, including structural requirements for elevated arrays, potential impacts on pest and disease dynamics under altered microclimates, and the necessity of monitoring systems to manage both agricultural and energy performance. The article highlights examples and case studies—successful projects in Europe and elsewhere—that demonstrate practical implementation, lessons learned, and best practices, such as the importance of participatory design with farmers, modular systems that can be adapted, and integrated business models combining energy sales with agricultural production. Environmental trade-offs are considered: while agrivoltaics can reduce land-use conflicts and lower greenhouse-gas emissions by substituting fossil electricity, careful site-specific assessment is required to avoid negative effects on biodiversity or soil functions. The article concludes by presenting agrivoltaics as a promising multifunctional land-use strategy that, with appropriate design, research, and policy support, can help reconcile the demands for renewable energy and food production while contributing to climate adaptation and resource efficiency.