Career
He is currently playing with Düsseldorfer EG of the Deutsche Eishockey Liga (DEL). Rönnberg made his Swedish Hockey League debut playing with Leksands IF during the 2013-2014 SHL season. After four seasons with Leksands, Ronnberg left as a free agent to sign a one-year contract in Germany with Düsseldorfer EG of the DEL on May 26, 2015.