Sewer Thermal Energy Network (STEN)Logo Design Contest Logo Design Contest Contests / Sewer Thermal Energy Network (STEN) Sewer Thermal Energy Network (STEN) has selected their winning logo design. For $275 they received 341 designs from 62 different designers from around the world. Find out how LogoTournament works How LogoTournament works Contest Annotation Delete We are sorry, but the time to edit this annotation has expired. Save Cancel Entries by giaphuc Return to Contest Return to Contest Comment Activity Order by Ranking Entry Number Comment Activity To leave a comment please click on the logo. New New New Comment Activity No activity yet.