Novel technologies such as electric vehicles will have a fundamental impact on the performance of a network and it is important that planners have a tool to accurately assess policies aimed at reducing vehicle fuel consumption and emissions. This work presents a novel framework to estimate city-wide vehicle environmental effects that integrates a dynamic traffic assignment model with a novel application of a vehicle energy consumption model. All vehicle drive technologies can be incorporated into the energy model framework. Initial results demonstrate how energy consumption differs for internal combustion engine, electric, and hybrid electric vehicles.