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MPPT

The second and most common type of controller has maximum power point tracking (MPPT) technology. These units are often found in larger systems and offer higher performance through their ability to extract all available power from the panels. MPPT charge controllers increase a solar array’s effectiveness 30%, making it the preferred technology in all but the most basic systems. The MPPT controllers also connect strings of panels in a series for higher voltages, keeping amperage low and wire size smaller, especially for long wire runs to the PV array.