Trackers are top-of-pole mounts that use electronic sensors and motors to automatically follow the sun's path. During cloudy weather they face the brightest part of the sky to maximize the array's output. Trackers can increase an array's power production by 10-50%, and are particularly effective in array direct water pumping situations.

Our trackers come in single and dual-axis models.

Single-axis trackers follow the sun's path from east to west, but they don't track the sun's seasonal changes, as the sun's angle gradually rises in the sky from winter to summer and falls again from summer to winter. With single-axis trackers, seasonal changes must be made manually, in the same way as one would with a fixed top-of-pole rack. Single-axis "tilt and roll" and "azimuth" type trackers are available.

Dual-axis trackers follow the sun's seasonal changes, as well as the daily rising and setting of the sun.

The added cost vs. performance boost of using a tracker usually adds up only with larger arrays. With smaller arrays, it is usually more cost effective to simply buy an additional panel or two.