A voltage regulation process, as well as a voltage regulation system, are discussed. A first voltage present at an input of the voltage regulation system is converted into a second, essentially constant voltage, which can be tapped at an output of the voltage regulation system. The voltage regulation system is provided with an additional device for assessing the efficiency of components connected to the second voltage. If it is determined that the efficiency of the components connected to the second voltage falls below a critical limit indicating the assessed efficiency, the second voltage can be increased.