Tigo optimizer power needed to operate at night


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    Enzo Francic

    Dear Colin,

    Thank you for contributing to the community!

    The optimizer does not require 22W of power, in fact, it is not possible for the optimizer to draw power from the PV module when is in dark. Typically during night, there is no sunlight hitting the PV modules; therefore there won't be enough voltage on the TS4 optimizer to start up. Specifically, 16V are needed - see datasheet - to turn on the optimizer; I believe this value is not reached during the night. 



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