Decreasing live stock connected with increasing lactating capacity leads to an excess of grassland area. Additionally the area which can be cultivated with energy plants is limited. Therefore, the use of grassland yield for bioenergy in areas which are not needed for feeding any more is getting more important. Hence, the usage for bioenergy can help to preserve the grassland area and to save the farmers' income.
However, the biomass yield model, developed at the University of Applied Sciences Eberswalde, applicated for arable land can be completed by a module for grassland. Thus, regionally differentiated assessments of potentials of bioenergy for different grassland usages will be done. Therefore, criteria of sustainability have to be implemented in order to avoid negative effects on the actual extensively used grasslands in Brandenburg.