Solar Panel Open Circuit Voltage

Temperature coefficient of voltage.

Solar panel open circuit 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. If you just measure with a voltmeter across the plus and minus leads you will read voc. 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. 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. 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.

Voltage at open circuit voc voltage at maximum power vmp or vpm nominal voltage. If two or more panels are wired in series it will be voc of panel 1 voc of panel 2 etc. Open circuit voltage voc open circuit voltage is how many volts the solar panel outputs with no load on it.