Comparison of Life Cycle energy consumption and GHG emissions of natural gas, biodiesel and diesel buses of the Madrid transportation system

▸ We examine the environmental impact caused by the Life Cycle of each technology, fossil fuel, biofuel and vehicle. ▸ Biodiesel environmental impact depends largely on land transformed for grow crops. ▸ Using SCR + Urea technology and gasoil as a fuel in the bus further reduces the environmental impact.