The figure compares the electrical yield of measured data to the simulation data on the days 05.11.2019 and 06.04.2020. Simulation mode 3 (RT) follows the measured data closely over the course of the day. Small deviations can be found, which may be attributed to the lack of consideration of mismatching losses. The overall relative deviation is −6.5%. The VF based simulation Mode 1 and 2 show a different trend, with a peak in midday hours and negative deviations in morning and evening hours. This development resembles the course of GHI over the day. The purely VF based simulation mode 2 produces consistently higher energy yields than the VF/RT combination mode 1.