Fixed solar panel installations receive maximum solar incidence only for a fraction of the day ranging from 2-4 hours, when the yield is the highest. For the remaining part of the day, the angular or partial solar incidence on the panels naturally results in lesser yield.
Trackers are simple devices that continuously adjust the position of the solar panels in accordance with the movement of the sun as it traverses its path from east to west during the day. Thus maximizing yield for most part of the daylight hours.
In a typical fixed installation yield curve for a day, notice the sharply tapered curves both for early day light and late afternoon hours. This is on account of partial solar incidence on the fixed panels during those hours.
Whereas an installation using solar tracker would produce a yield pattern that is fairly consistent and evenly distributed for the daylight hours. Acheived by constantly changing the position of the panel in accordance with the path of the sun.
Looking at the area difference between the two charts it is apparent the difference in yield could be anywhere upto 30%.
TODAY, THERE ARE SUFFICIENT INSTALLATIONS ACROSS THE WORLD AND DATA AVAILABLE TO PROVE AN INCREASE IN YIELD USING TRACKERS.
OUR SINGLE HORIZONTAL AXIS TRACKERS HAVE A PERFORMANCE INCREASE OF BETWEEN 12% AND 32% DEPENDING ON THE PLACE ON EARTH AND CLIMATE.