Are PV trackers worth the extra expense? Once thought not, but times are changing.

To determine whether it is more beneficial to consumers to install regular modules in order to boost site production or to install a tracker it is important to look at the geography of the project at hand. Depending on how much solar radiation an area receives or how much space you have to install the modules will make or break your decision to go with trackers. If you are located in an area with lower levels of solar radiation installing a tracker may not be as beneficial compared to areas that receive more sunlight. However, if you are limited on space for a project, a tracker would be a more efficient way of receiving solar energy. Trackers are also beneficial when working with problematic terrain.


According to Frank A. Middleton, vice president of marketing and chief operating officer at OPEL Solar Inc. based in Shelton, CT choosing to install trackers is typically expected to increase the costs of a project by 4-5%. Middleton believes that the yield increases, which usually reach up to 15-20%, justify the use of trackers for nearly all PV projects. 20 years ago due to the lack of technology that we now have trackers were known to be unreliable, but now with GPS chips trackers require so much less maintenance. The belief that trackers have higher costs than fixed systems is now virtually gone, and in the end you are producing more energy which would make up for any of the equipment that is slightly more expensive.

Today’s trackers follow the sun by using one of two technologies, according to Middleton. The first uses astronomic tracking algorithms, which is tracking the sun by using mathematical equations to determine exactly where it is at all times, while the second is searching for the brightest spot in the sky and adjusting for clouds, reflections from objects, and is more difficult. The first seems to be the preferred technology among many. With new technologies we are now able to track and control our trackers wirelessly! Maintenance, problem solving, and monitoring can all be performed remotely with this new network.

Of course every project is different and it depends on many factors what the best option is for your installation. Taking all these factors into account can help to determine whether it is beneficial to choose trackers versus fixed modules. Trackers, once thought to be too expensive and a hassle, is finally gaining acceptance in the industry as technologies are improving and being perfected.