Abstract: A support structure for a fixed-tilt solar collector comprises front and rear concrete ballasts extending in a direction parallel to a row of one or more PV panels and a racking structure configured to support the one or more PV panels such that a normal vector of the one or more PV panels is at a fixed angle. At least one stringer is arranged in a direction parallel to the front and rear concrete ballasts. First and second rails are arranged in a direction perpendicular to the stringers. The first and second rails are fastened to and support the at least one stringer. The first and second rails are fastened to the front concrete ballast. Legs are fastened to and support at least one of i) the at least one stringer or ii) the first and second rails. The legs are fastened to the rear concrete ballast.