Despite the intolerable costs of greenhouse emissions and the dwindling of natural oil, gas and uranium reserves, the vast majority of cities and urban communities are managed, administered and planned as if this crisis does not exist. Hence the transition from fossil fuel dominated cities to an urban future marked by a radically new, renewable energy infrastructure requires entirely new tools and frames of decision-making. This is an original guide to an entirely unprecedented urban transition, squarely focused on action. It supports design, planning and management decisions and serves as a practical guide to practitioners, academics and political leaders in communities and cities worldwide, as a useful and well-structured reference text. It is built on the most successful of past and present urban sustainability trends, emerging infrastructure directions, renewable energy applications and major new approaches to urban infrastructure planning and the design of cities.