PESA is the preferred bidder for supplying 20 trams for Sofia tram March 26, 2013 | Europe Company News Sofia tram operator Stolichen Elektrotransport has named Poland-based Pojazdy Szynowe Pesa Bydgoszcz (PESA) as the preferred bidder to supply 20 low-floor trams. The contract is worth EUR50 million, i... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password