The invention relates to an electrodeposition coating installation for painting workpieces, in particular vehicle bodywork, comprising at least one immersion bath, in which at least one electrode is located, a transport device, which introduces the workpieces into the immersion bath and removes them from the latter and a power supply unit, which generates an output voltage, in particular an output d.c. voltage, from an input a.c. voltage, the first output potential of said output voltage being supplied to at least one of the workpieces to be painted and the other output potential being supplied to at least one of the electrodes that is located in the immersion bath. The aim of the invention is to provide an installation, which permits each workpiece to be supplied with an individual output potential. To achieve this, the power supply unit has at least one current control device, which is displaced through at least one section of the electrodeposition coating installation with a workpiece that is assigned to said device and which supplies the output potential for the workpiece that is assigned to the current control device.