This post was originally published in 2017. The tips and techniques explained may be outdated.
People who have installed a PV system on the roof naturally want to collect as much sunshine as possible. However, what if a tree, chimney or even a neighboring house casts its shadow on the modules? It’s not a problem because SMA has the right solution, no matter the size of the shadow on the PV system.
We will present our solutions to you and explain when which option makes sense.
1. OptiTrac Global Peak: shade management is part of the SMA inverter
The inverter’s MPP-tracker has a decisive influence on the energy yield of a partially shaded system. It continuously operates the PV modules assigned to it at their optimum power, also known as the maximum power point (MPP).
We have optimized the MPP tracking with the specially developed shade management function OptiTrac Global Peak for manageable PV system shading of 15 to 20 percent. It has been integrated into all SMA string inverters. In shading situations, OptiTrac Global Peak always automatically recognizes the global maximum performance of the affected module and can therefore almost completely use the available energy of a partially shaded string.
OptiTrac Global Peak benefits
Free, integrated shade management
No auxiliary devices necessary
Five percent more energy yield, without additional costs
In this video you can see how OptiTrac Global Peak works:
2. Intelligent SMA module optimizers TS4-R-O
If more than 20 percent of the PV modules are shaded over the course of the day, it makes sense to fit the PV system with the SMA TS4-R-O module optimizer. The optimizer enables individual MPP tracking at the module level and therefore still produces the highest possible energy yields from the modules, even in shade.
SMA module optimizer benefits
Individual shade management at the module Level
Only affected modules have to be equipped with an optimizer
Quick and easy to install
Up to 10 percent more energy yield
This video shows you how the SMA optimizer works:
With the SMA Power+ Solution, you put the shade in its place and can enjoy your PV system at any time.