While KERS may be available for Brawn GP to use, team boss Ross Brawn admits installing it is proving to be a difficult task.
Brawn GP could have an additional power boost within the next few races as their engine supplier Mercedes have made KERS available to the Championship leaders.
However, team boss Brawn fears using the device could cause problems that far outweigh the advantages of the power boost.
"Mercedes have made it available to us. We've just got to find a way of fitting it to the car and not compromising the handling, because the car wasn't designed for their system," he recently said.
"The biggest issue that we have is overall weight, because in fitting the Mercedes engine we added a reasonable amount of weight to the car with all the modifications we had to make.
"Although theirs is a very light system, we've lost the capacity that we need to install their system and add the ballast that we need to get the right weight distribution."