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.

Some exceptions may apply based on panel type. Temperature coefficient of voltage. Measuring voltage and solar panel testing. 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.

Open circuit voltage is then a measure of the amount of recombination in the device. 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. 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 voltage at maximum power vmp or vpm nominal voltage. Open circuit voltage can vary depending on your solar panel but the readings we are usually looking for are in the range of 15 to 23v. If you just measure with a voltmeter across the plus and minus leads you will read voc.