How does science and research support sustainable and affordable energy for local communities? Innovation-driven energy transition of municipalities. Modern technologies allow municipalities and local communities to cover their energy needs on their own, using local renewable sources and without dependence on big networks and their business conditions. How can you achieve this using photovoltaics and wastewater? How can smart monitoring and steering optimize your energy management? What technologies are complementary and what may cannibalize each other? Why is energy sharing so crucial to support self-supply and local consumption? In order to fully benefit from invested money and effort, technical transformation needs to be supported by social innovation and smart governance. What is the economic rationale of community energy? How can local communities benefit from energy innovations in other areas such as water management? What are the models of citizen engagement and participation? How to build reliable partnerships? What is the role of strategic planning while transforming visions into successful projects?