Two Years of Operation of Solar Brise-soleils at Germinare Institure in Brazil: Performance Monitoring and BIMsolar Simulations

This paper evaluates two years of operation of the photovoltaic brise-soleil system installed on all four façades of the Germinare Institute in São Paulo, Brazil. The 70.5 kWp BIPV installation uses 564 CIGS modules integrated into vertical shading elements. Daily inverter-level generation data (June 2023–October 2025) and irradiance measurements were analyzed to assess seasonal and annual performance. Updated BIMsolar simulations using detailed 3D geometry and PVGIS irradiation were compared with monitored results and with initial preinstallation estimatatives. The façades showed strong seasonal complementarity, with north-facing modules performing best in winter and south-facing modules in summer. BIMsolar provided improved accuracy over simplified models, though still overestimating outputs due to higher satellite-based irradiance in some months. The study reinforces the potential of façade-integrated photovoltaics in Brazil