Many cities are currently exploring the possibilities to make better use of the current urban fabric and its infra- structure, with the aim of enhancing local quality of life and improving urban sustainability. The wealth of urban data, the increased connectivity of urban objects through the Internet-of-Things and advanced energy and mobility technologies have opened up new avenues for the application of smart solutions and the transition to clean energy and mobility in cities. Numerous cities across the world are now looking into the potential of smart solutions, experimenting in living labs and applying smart technologies in ambitious integrated projects, such as the Hori- zon2020 lighthouse projects.