A solar panel assembly attachment apparatus is provided. In another aspect, a single piece and entirely metallic grounding clip is employed. A further aspect includes a clip or fastener which provides both frame grounding and a frame-to-strut attachment. In still another aspect, a grounding clip having barbs is linearly slid onto a solar panel frame and the clip additionally includes one or more flexible wings which are removably snap-fit into a slot of an elongated and rigid strut.