Proterra is a world leader in the design and manufacture of zero-emission vehicles that enable bus fleet operators to reduce operating costs and deliver clean, quiet transportation to the community. The Proterra Catalystâ„¢ electric transit vehicle was designed to be the most flexible platform for the electrification of transit systems around the world, offering customizable options that provide a wide range of configurations based on individual routes. With unmatched durability and energy efficiency based on rigorous testing at Altoona, the Proterra product is proudly made in America.