[en] The growing demand for clean renewable energy deployment, driven by the European Green Deal, presents challenges, particularly due to land pressure in the rural regions. Agri-PV sys-tems offer a potential dual land use to meet renewable objectives while reducing impact on agriculture. This study proposes a GIS-based methodology to evaluate the agronomic impact of Agri-PV on grassland, applying a high-resolution spatial analysis across 139 pedo-climatic regions in Wallonia, Belgium. The simulations use the Gras-Sim crop model embedded in the open-source tool PASE to estimate biomass production under four agrivoltaic configurations (canopy, vertical, and two south-oriented systems at different heights) and the control. For each design, multiple ground cover ratios (0.2 to 0.5) are tested over a 10-year period. Results indicate that vertical and canopy systems, especially in low-root-depth soils, can maintain grass yield compared to the yield in a control region without panels thanks to reduced evapo-transpiration, sustaining the crop during drought periods. Conversely, low height configurations with high GCR showed a reduced biomass. The approach, combining different designs and territorial soil and climate conditions, provides first insights into grassland performance and the critical parameters affecting the crop dynamics.
