Solar District Heating in East Germany – Transformation in a Cogeneration Dominated City

Realising the aims and visions of energy policy requires special solutions. The contribution presents a solution which respects the conditions of conventional district heating (DH) systems in Germany and a heterogeneous building structure in an urban quarter. The simulation shows that a solar fraction of about 10% can be reached easily from technical and economic points of view. The concept can be transferred to further areas within a town (urban restructuring) and other conventional DH systems in Germany. In Chemnitz, this concept is being implemented step by step from 2013 to 2018.