In order to achieve a better understanding of this spatial variability of the stress field, the project SpannEnD (2018-2022) created the first geomechanical-numerical 3D stress models for Germany. These models were calibrated on point-measured stress data and allow predictions for areas without stress data and the derivation of all six independent components of the stress tensor based on continuum mechanical approaches. Since no database for stress magnitudes existed so far, one was created for Germany and neighbouring regions as part of the project. The stress tensor of the German model was used to determine the slip tendency for several compilations of fault geometries. This parameter is used to estimate the reactivation potential of faults. In addition, first approaches of stress transfer between models of different sizes were tested, as well as methods of scaling rock paroperties.