We present a visualization tool for the analysis of the transport energy budget of a city, including the life-cycle energy embedded in the built infrastructure and the energy consumption by transportation. In our application, cumulative total energy is displayed as stacked, color-coded cylinders on a land use map. Transport energy consumption from traffic between inner-city travel zones is visualized as directed 3D Bezier curves. Our tool will support urban planners in assessing how urban form and infrastructure impact energy consumption and related greenhouse gas (GHG) emissions.