Connection Diagram for Solar Panels with Optimizers: How It Works

Solar panels with optimizers can be configured in two different ways. For example, optimizers from brands such as Tigo or SolarEdge can be integrated into the system. The Tigo optimizer is specifically designed for use in series systems. At OptimaSolar, we utilize Solis inverters for this purpose. It is not always necessary to install an optimizer under every panel. Typically, optimizers are deployed for panels that experience shading, ensuring that the other panels continue to operate at optimal efficiency. 

If your roof is not optimally positioned in relation to the sun, using an optimizer is a wise choice. This is particularly relevant when some of your solar panels are shaded or facing different directions. Naturally, you want to avoid any reduction in the performance of your solar panels. However, does using optimizers always provide better results? The answer is not always straightforward. If your roof is well-suited for solar panel installation and maximizes sun exposure, the additional cost of optimizers may not justify the extra yield, thus prolonging the payback period of your solar panels. 

Tigo optimizers come with four MC4 connectors: two short and two longer ones. The short plugs are connected to the corresponding solar panels, while the longer plugs are used to connect to the string of other panels. Similarly, SolarEdge power optimizers are also equipped with four plugs. The short cables are connected to the panel, and the longer cables are used to connect the string of panels. If any of the plugs are misplaced, the solar system will not function correctly. Finally, the cables from the panels are connected using connectors to the DC cabling, which then connects to the inverter.