Solar Panel Open Circuit Voltage

Open circuit voltage voc open circuit voltage is how many volts the solar panel outputs with no load on it.

Solar panel open circuit voltage. Temperature coefficient of voltage. Some exceptions may apply based on panel type. If two or more panels are wired in series it will be voc of panel 1 voc of panel 2 etc. Silicon solar cells on high quality single crystalline material have open circuit voltages of up to 764 mv under one sun and am1 5 conditions1 while commercial devices on multicrystalline silicon typically have open circuit voltages around 600 mv.

Measured with a multimeter across the open ends of the wires attached to the panel. Voltage at open circuit voc voltage at maximum power vmp or vpm nominal voltage. Open circuit voltage is then a measure of the amount of recombination in the device. If you just measure with a voltmeter across the plus and minus leads you will read voc.

Consult your solar panel s documentation for information or contact our technical support desk. Since the solar panel isn t connected to anything there is no load on it and it is producing no current. Voltage at open circuit voc this is the voltage that is read with a voltmeter or multimeter when the module is not connected to any load.