Despite the intolerable costs of climate change and inevitably declining oil, natural gas and uranium reserves, the vast majority of cities and urban communities are planned and managed as if such existential crises did 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 transformation, to cities and towns powered by renewable energy. 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 and emerging infrastructure directions, presenting renewable energy applications as offering new and inevitable approaches to urban infrastructure planning and the design of cities.