Ramming post foundations have the issue of settling differently throughout the field of the Solar Project. This is especially problematic for single-axis trackers on ramming post foundations that support a central axis or torque tube for 10 feet or more. This can results in foundations settling differently over the span of the long central axis or torque tube. The resulting movement will either can cause structural damage to the tracker, or prevent the tracker from operating properly. In either case, the foundations of these trackers have to be repaired before they can function properly.
Trabant Solar's tracker is not affected by this problem. The Ballast Foundation sits on top of the soil, which allows the tracker to move up and down in unisom with the movement of the soil. Trabant Solar's tracker has been tested in Canada, where the project site is affected by frost heave, which can result in soil movement between 10 and 14 inches over a given year. These Trabant Solar trackers have run continuously for several years without being impacted by the frost heave or snow load.