What’s Best for Your system? PWM Solar Controller or MPPT Solar Controller? Fist of all, let's talk about what is PWM and MTTP. PWM is short of Pulse Width Modulation (PWM). MPPT is short of Maximum Power Point Tracking. Theoretically, the solar power generation system using MPPT controller will be 50% higher than the traditional efficiency, but according to our actual tests, due to the impact of the surrounding environment and various energy losses, the final efficiency can also be increased by 20% -30% .But MPPT solar controllers are many times more expensive than PWM controllers. However, because the controller is a one-time investment, the efficiency of using the MPPT solar controller is increased by 20% -30%, so using the MPPT solar controller in the same configuration can save a part of the cost of solar panels. So in the long run, MPPT solar controllers are more efficient and more economical. Therefore, the MPPT solar controller is bound to become a trend.
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