Calculated ground irradiance using the direct or diffuse fraction for the south-facing solar park in the Netherlands. The solid red area represents the simulation with only the direct “beam” and circumsolar contributions; the simulation with only the indirect “diffuse” fraction of the GHI is given by the striped, green area, stacked above each other. The left hand figure shows the simulation for the white bifacial module, the right hand for the transparent bifacial module. The position of the PV tables is given by the cross-sections above the graphs.