Proterra’s fifth-generation vehicle, the ZX5 electric bus, incorporates a purpose-built platform proven through more than 35 million miles in service. Designed from the start as an exclusively electric vehicle, everything about a Proterra ZX5 electric bus is built with safety, efficiency and a smooth ride in mind. The ZX5 features faster acceleration, industry-leading gradability and up to 738 kilowatt hours of energy – the most battery storage on any 40-foot electric bus on the road today.