The Schalke coach believes Saturday's clash remains the most eagerly anticipated match of the Bundesliga calendar.
The bitter rivals go head-to-head at Veltins Arena on Saturday with eight points separating the sides after just nine rounds of fixtures in the Bundesliga, although Schalke won both games last season 2-1.
Despite trailing Jurgen Klopp's charges, Keller is relishing the prospect of facing BVB once more in what he believes to be the most eagerly anticipated game on the German calendar.
"There is no other game in Germany which electrifies the masses as much as this derby," the 42-year-old said during a press conference. "Every player knows what is at stake. A derby win means as much to the players as it does to the fans."
Schalke enters the match coming off impressive Bundesliga wins over Augsburg and Eintracht Braunschweig, but was humbled midweek by Chelsea during a 3-0 loss in Gelsenkirchen.