Complete Guide to Solar Mounting Structures & Benefits. These mounting systems can be installed on rooftops, the ground, or other tailored structures. The main goal is to position the panels at an optimal angle and orientation to absorb the maximum. Mounting costs represent only 3% of total solar system cost but significantly impact long-term performance, with quality systems providing 25+ year warranties that match solar panel lifespans. A solar farm mounting system plays a crucial role in supporting solar panels, optimizing their orientation, and ensuring. Solar mounting systems are the structural foundation that secures your solar panels to their installation surface.