Typically, 100 to 375-watt panels are used, depending on the pump's specifications and whether it's single-phase or three-phase. Proper sizing ensures efficient operation and longevity of the pump.
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You need around 200-300 watts of solar panels to charge most of the 12V lead-acid batteries from 50% depth of discharge in 6 peak sun hours with an MPPT charge controller.
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Use this free interactive solar panel calculator to find out how many solar panels fit on your roof.
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Specifically, traditional silicon solar panels typically convert about 15-20% of sunlight into electricity, meaning a considerable percentage is inherently lost. Moreover, environmental elements such as dust or snow accumulation can reduce efficiency, leading to additional losses.
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