Abstract: A solar panel tracking system for simultaneously rotating large arrays of solar panels positioned in multiple rows utilizing a single drive system and having a stow strategy with a stow-and-lock system built into the array support piers. A stow-and-lock stopping structure is mechanically and structurally incorporated into the support piers such that the solar panels stop at approximately 45 degrees, and the stow-and-lock assembly ensures that moment forces of the array are transmitted directly to the immediate support members, obviating the need for the driveline, locking dampers, and rotational supports to resist the forces transmitted from an entire wing and row of panels.