Clemson secures Proterra electric buses, plans full-electric fleet, US September 8, 2017 | North America Company News Proterra has supplied 40 Catalyst E2 buses to Clemson Area Transit (CATbus) in South Carolina. The procurement cost of USD3.9 million is being funded by grant from the federal Low- or No-Emissions (Lo... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password