Abstract— This paper shows an approach to analyze the
behavior of the electrical low-voltage grid. Here, the focus lies on
home energy systems acting as heat supplier for buildings and
photovoltaic systems as domestic electrical energy sources.
Electrical quantities of the grid like voltage, load flow through
the distribution transformer, grid losses and the utilization of the
cables are analyzed in a case study. This case study includes two
scenarios. The first one is built up with an actual penetration of
distributed systems and the second (generic) one includes higher
shares of these systems. As a result so far, we cannot find any
violation of critical values in the considered test cases.