Transit-oriented development (TOD) and green urbanism have gained attention as development models for charting a more sustainable urban future. These two built forms, however, are often dealt with separately, as distinct topics. This paper explores synergies that are created when neighbourhoods are designed as both green and transit-oriented and how ‘Green TOD’ can reduce a project's environmental footprint more than each strategy can achieve individually. Experiences with Green TODs are reviewed for urban regeneration projects in Sweden, Germany and Australia. These projects optimally combine sustainable building, energy and waste practices with high-quality transit access. ‘Green’ transit-based urbanism can substantially shrink the environmental footprint associated with car-oriented suburban development. We estimate that carbon emissions and energy consumption of Green TOD can be nearly 30% less than that of conventional development. Synergies that are created by combining TOD and green urbanism include increased densities, which promote transit usage, conserve heating/cooling expense and enable waste reuse techniques contingent on high volumes; mixed land uses, which promote non-motorised transportation and match the differing heat and energy needs of commercial and residential uses to enable maximum reuse of waste heat; reduced impervious parking surfaces replaced by increased open space and community gardens; opportunities for generating solar power for use in buildings from photovoltaics (PVs) atop rail-stop canopies and remote parking structures; and using renewable energy/fuels produced from the built environment to power transit vehicles.
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