Solar
Solar Array Voltage & Current Calculator
Calculate solar array voltage, current, total panels and approximate DC power from panel specifications and series-parallel configuration.
Panel Specifications
V
V
A
A
Find Vmp, Voc, Imp and Isc on the solar panel datasheet.
Array Configuration
Series panels increase voltage. Parallel strings increase current.
Array Configuration
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Series × parallel configuration of the solar array.
Array Operating Voltage (Vmp)
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Array Open-Circuit Voltage (Voc)
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Array Operating Current (Imp)
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Array Short-Circuit Current (Isc)
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Total Number of Panels
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Approx. Array DC Power
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How it is calculated:
Panels connected in series add voltage while current remains the same.
Array Vmp = panel Vmp × panels in series.
Array Voc = panel Voc × panels in series.
Parallel strings add current while voltage remains unchanged.
Array Imp = panel Imp × parallel strings.
Array Isc = panel Isc × parallel strings.
Total panels = panels in series × parallel strings.
Approximate operating DC power = array Vmp × array Imp.
Final inverter compatibility should also be checked against the manufacturer’s MPPT voltage range, maximum DC voltage and input-current limits.