Cities and municipalities play a key role in finding solutions for climate change issues on the local level. A number of research projects already provides best-practice examples and strategies for their implementation. An effective exchange of municipalities facilitates the spread of available knowledge much faster. Within this article Ecologic Institute's Doris Knoblauch, Arne Riedel, and Monica Ridgway discuss the central challenges of both groups and elaborate on the themes and methods used for networking. The article is available for download.