Proterra

Proterra was an American electric vehicle and powertrain manufacturer, founded in 2004 in Golden, Colorado by Dale Hill, who had earlier founded the bus builder TransTeq. It designed and built battery-electric transit buses, battery and drivetrain systems for other heavy-duty vehicle makers, and charging systems for fleets. Its bus line ran from the EcoRide, first shown as a prototype in 2008, through the Catalyst of 2014 to the ZX5 of 2020, all built on a composite body. Production moved from Colorado to Greenville, South Carolina, and the company later headquartered itself in Burlingame, California. Proterra became a public company in 2021 and filed for Chapter 11 bankruptcy in August 2023. Its assets were then split up: the Proterra Powered powertrain business went to the Volvo Group, the transit bus business to Phoenix Motorcars, and the charging business to Cowen Equity. This entry is the Proterra make, the brand under which its buses were sold.