A configurable rack for supporting components of an uninterruptible power supply includes a frame assembly having a front and a rear. At least one of the front and the rear is configured to receive electronic modules in stacked relation along a height of the frame assembly. The configurable rack further includes a busbar backplane disposed between the front and the rear. The busbar backplane extends vertically within the frame assembly and is configured to be electrically coupled to the at least one electronic module received within the front and/or the rear of the frame assembly.
