The appointment is the prelude to an autumn campaign that will be heavily weighted towards TV.
The Scholz pitch was led by Stefanie Wurst, its managing director, Constantin Dudzik, the strategy director, and Constantin Kaloff, the creative director. Dudzik said the agency's work would involve "a wealth of unexpected ideas".
Saturn claims to be the country's fastest-growing electrical retailer, with a turnover of EUR2.6 billion last year. It has 123 outlets in Germany and a further 180 in eight other European countries.