MPPT stands for Maximum Power Point Tracking. It’s a technology used in solar charge controllers to optimize the power output from solar panels and maximize the amount of energy collected from the sun.

Here’s how it works:

Solar panels have a “sweet spot”: Each solar panel has a specific voltage and current combination at which it produces the maximum amount of power. This point is called the Maximum Power Point (MPP).
Sunlight conditions change: The amount of sunlight hitting the panels fluctuates throughout the day due to factors like weather and time of day.
MPPT controller tracks the MPP: An MPPT charge controller constantly monitors the voltage and current output of the solar panels and adjusts the load on the panels to keep them operating at the MPP. This ensures that the panels are always producing the maximum possible power under the current sunlight conditions.
Benefits of using MPPT solar controllers:

Increased energy harvest: Compared to non-MPPT controllers, MPPT can increase the energy harvest from solar panels by up to 30% or more.
Improved efficiency: MPPT ensures that the solar panels are always operating at their peak performance, maximizing the efficiency of the entire solar power system.
Adaptability to changing conditions: MPPT automatically adjusts to varying sunlight levels, ensuring optimal performance even in cloudy or partially shaded conditions.
Overall, MPPT solar controllers play a crucial role in maximizing the efficiency and energy output of a solar power system.