Comparison of future energy supply scenarios with dispersed generation in distribution networks

The massive integration of dispersed generation of combined heat and power units (CHP units) brings up challenges for today´s distribution networks that they not have been planned for. However, it is not yet fully understood in which areas and under which precondition, CHP units shall be installed and could be efficiently operated with minimum environmental impacts. In this paper an analysis of different energy supply scenarios for different distribution networks in Germany in 2030 evaluating the environmental impacts and the effects on grid planning is presented. Based on a comparison of these scenarios recommendations are given in which areas and under which preconditions a local heat and power supply with CHP units is more environmental friendly compared to centralized power generation in large power plants combined with conventional heating systems.