This is a fair question because many solar systems you see are installed on roofs and high structures. The truth is that height has little to do with the efficiency of your solar panels. Installing solar systems on roofs just often gives them the best exposure to direct sunlight. The roof of your home or commercial building is also a prime spot for solar panel installation because that is space that is going unused. Panels on ground mounts and panels on a roof can have the same level of efficiency so long as they are exposed to the same levels of direct sunlight.
Direct sunlight is important because that is what allows solar energy to work at its best. Your system can still generate electricity on cloudy days or when the sun is at a lower point in the sky, but it won’t be quite as much. You can talk to PCS Energy about your geographical location and the optimal time of day the sun will hit your solar panels.