Solar Panel Open Circuit Voltage

Since the solar panel isn t connected to anything there is no load on it and it is producing no current.

Solar panel open circuit voltage.

Voltage at open circuit voc voltage at maximum power vmp or vpm nominal voltage. Open circuit voltage voc the open circuit voltage is the maximum voltage that the solar panel can produce with no load on it i e. Open circuit voltage is then a measure of the amount of recombination in the device. 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. Some exceptions may apply based on panel type. Measuring voltage and solar panel testing. Temperature coefficient of 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. Consult your solar panel s documentation for information or contact our technical support desk. If you just measure with a voltmeter across the plus and minus leads you will read voc.