The point on the current‐voltageThe amount of electromotive force, measured in volts, that exists... (I‐V) curve of a moduleSee photovoltaic (PV) module under illumination, where the product of currentSee electric current. and voltageThe amount of electromotive force, measured in volts, that exists... is maximum. For a typical silicon cell, this is at about 0.45 volts.