Electrical characteristics include nominal power ( P MAX, measured in W ), open circuit voltage ( V OC ), short circuit current ( I SC, measured in amperes ), maximum power voltage ( V MPP ), maximum power current ( I MPP ), peak power, ( watt-peak, W p ), and module efficiency ( % ).
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For example, a 200 Watt Kyocera solar panel specifies that for max power output, the current should be 7.61 amps and the voltage should be 26.3 volts, the product of current times voltage equalling 200.61 Watts, which implies a total external circuit resistance including the load of 3.46 Ohms . but says the short circuit current is 8.21 amps and the open circuit voltage is 32.9 volts.
