The document outlines a study conducted by GDFSUEZ to develop 4 scenarios for what cities may look like in 2030. A methodology was used to create contrasting scenarios based on two factors: the level of political autonomy a city has and its focus on either the environment or the economy. The 4 scenarios developed were: Self City (participatory with environmental focus), Planet City (regulated by supranational governance on environment), Castle City (autonomous seeking economic appeal), and Patchwork City (free market with privatized neighborhoods). Each scenario describes the urban form, governance structure, energy/utility systems, and implications for different sectors.