Solar Panel Open Circuit Voltage

Temperature coefficient of voltage.

Solar panel open circuit 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 the open circuit voltage is the maximum voltage that the solar panel can produce with no load on it i e. 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 voc open circuit voltage is how many volts the solar panel outputs with no load on it.

Since the solar panel isn t connected to anything there is no load on it and it is producing no current. If you just measure with a voltmeter across the plus and minus leads you will read voc. Voltage at open circuit voc voltage at maximum power vmp or vpm nominal voltage. Measured with a multimeter across the open ends of the wires attached to the panel.

Open circuit voltage is then a measure of the amount of recombination in the device. 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. Some exceptions may apply based on panel type.