A solar generator apparatus includes a generator module having first to fourth corner portions; a middle column; first and second winding devices attached to the middle column; first and second cables and first to fourth elastic anchors. The middle column has first and second ends, mounted on a fixed structure and pivotally connected to the generator module, respectively. The first cable, having two ends respectively connected to the first and third corner portions, is wound around the first winding device. The second cable, having two ends respectively connected to two ends of the second and fourth corner portions, is wound around the second winding device. The first to fourth elastic anchors are elastically mounted on the fixed structure. The first cable passes through the first and third elastic anchors to form a W-shaped structure. The second cable passes through the second and fourth elastic anchors to form another W-shaped structure.