Abstract: A utility panel system is provided for open office spaces, and the like. Each utility panel has a relatively thick, skeleton-like frame, with a foot and opposite sides shaped for interconnection with like panel frames to create a substantially freestanding utility panel system. Cover panels are detachably connected to the opposite faces of each panel frame to enclose the same, and provide ready access to the panel interior. Horizontal utility troughs extend continuously between the opposite sides of each panel frame in a vertically stacked relationship. The utility troughs have open ends located at the opposite panel sides, and are positioned such that when adjacent utility panels are interconnected in a side-by-side relationship, the utility troughs are aligned to form multiple raceways. Panel connectors are provided to connect the utility panels with one or more of a variety of existing partition panels, such that the utility panels act as a spine which supplies utilities to the existing partition panels.