ALEKO Solar Panel Monocrystalline 125W for Any DC 12V Application (Gate Opener, Portable Charging System, Etc.) 125 watt monocrystalline solar panel - nominal output voltage 120 v Operating voltage (vmp) - 175 v Operating voltage (vmp) - 714 v Open Circuit Voltage (Voc) - 220V Dimension - 49 x 28 x 3 in