While every other team muses the KERS dilemma, it is clear that McLaren-Mercedes is the 2009 champion in the new energy re-use technology.

While every other team muses the KERS dilemma, it is clear that McLaren-Mercedes is the 2009 champion in the new energy re-use technology.

Toyota, the Red Bull teams, Williams, Force India and Brawn have not fitted the technology to their cars at all this season, while Ferrari, BMW and Renault's experimentations have shown an unclear benefit from their respective systems.

The works cars of Lewis Hamilton and Heikki Kovalainen, however, have consistently used the Mercedes-developed KERS system at all four grands prix so far.

Norbert Haug revealed to the German press on Tuesday that the marque's success with KERS in F1 has made its system popular.

"We have had several inquiries (about KERS)," said the Mercedes competition boss, "both from teams that want to enter in 2010 and teams that are already established."

Mercedes has also expressed interest in being the sole KERS supplier, should the FOTA team alliance agree to adopt a standard unit solution for 2010 and beyond.