A height-adjustable shelving system for an appliance includes an appliance having a plurality of walls that define an interior cavity. The appliance has an electrical system that extends into at least one of the walls of the appliance. A shelf is selectively disposed within the cavity and includes a lighting fixture. A shelf support system in communication with the electrical system includes at least one rotatable body operable between a plurality of support positions, the at least one rotatable body removably receiving and supporting the shelf, wherein each of the support positions of the rotatable body corresponds to a different shelf height. The removable engagement between the shelf and the rotatable body in any of the plurality of support positions places the lighting fixture in communication with the electrical system.