The inverter is the true "brain" of any solar energy system: it is the device responsible for transforming the direct current from the panels into the alternating current used by our household appliances. No matter how good the panels are, if a poor-quality inverter is used, the overall performance of the roof will suffer.
The String Inverter (or Centralized Inverter)
It is the predominant standard in the global industry due to its great reliability and adjusted cost. In this setup, the panels are connected in series (like beads on a necklace) and the total energy sum travels to a single inverter located in the home. The downside? If the shadow of a tree or a chimney covers one of the panels, the drop in performance will drag down the rest of the "necklace," reducing total production.
The rise of Microinverters
As a Premium alternative, microinverters (systems promoted by brands like Enphase) have emerged. These smaller devices are hidden right beneath each panel. What are their great strengths?
- Absolute independence: If one of the panels suffers from dirt or occasional shadowing, the rest of the panels will continue operating intact without drag losses.
- Electrical safety: By transforming the energy panel by panel on the roof itself, the wiring travelling into the home is already at a safe voltage, minimizing risks thoroughly.
- They allow for starting with small installations and easily expanding year after year in a modular fashion.
We will analyze the shadows on your roof to determine the ideal technical configuration recommended for you to gain efficiency and reliability.