To tackle climate change, pollution and dwindling resources, we need to rethink our urban environment by identifying the most suitable morphological structures, with an optimized local (cradle-to-cradle) approach to energy and resources; towards economic feasibility and improved environmental quality.In this paper we propose integrating the Transect concept with the energy issues, to provide a flexible system for allocating building types, landscaping, energy systems, etc. so that they contribute to a symbiotic ecosystem. This Transect framework can include a juxtaposed toolbox that can be used collectively at the region, city, sector, neighborhood, and block/building scale. Keywords: urban planning, morphology, transect, energy, existing buildings, land use, typology.
Energy issues in urban areasLarge parts of the world population (50-60%) are presently living in urban areas, which represent the most energy consuming systems (The World Bank, 2009). Of the many studies conducted, the one carried out by the International Energy Agency IEA [1] showed that cities have an average energy consumption of 69% of the total energy needed for human activities; by 2030 this level will increase to 75%. Moreover, the built environment is responsible of one fifth of the all greenhouse gases emissions IPCC [2], explained by the fact that most humanrelated activities are located in buildings.The existing building stock is responsible for 40% of the used global primary energy. Although the contribution of existing technologies for energy saving and production are widely recognized, the potential energy savings due to retrofitted Eco-Architecture IV 183