Community energy projects give their own answers to the challenges of energy system change: They are social innovations. By building new relations between local economies, communities and technical infrastructures, these projects not only change the energy system but also respective power structures. Drawing on case studies from Germany, Denmark and Scotland, this book shows the importance of community ties, and shared symbols for successful processes of transformation and develops recommendations for policy decision-makers. About the author Arwen Colell is an energy policy specialist with industry experience in renewable electricity generation and electric driving. Her current work focuses on the science-policy interface of climate politics for the energy and mobility transformation. Her research on social innovations in community energy received the Bavarian Energy Award in 2020.