Because of the German Renewable Energies Act, open area systems have recently become very interesting for investors. In contrast to roof systems, a significantly higher total system performance can be achieved. Here, the effectiveness, i.e., the efficiency of the solar energy system, is impressive. A solar energy system covering a hectare can replace the energy production from approximately 100 hectares of rapeseed cultivation. Precisely because of the low construction height, in some cases less than 2 meters, and the assembly form (piles) preserving absolute space, the systems are integrated excellently into the existing landscape and the local ecosystem.