Calculate maximum expected amps on a solar panel. How many amps the panel will produce will depend on the power rating of the solar panel, the amount of sun hitting the panel, temperature of the solar panel, and the characteristics of the circuit to which the panel is connected.

Watts and Volts to Amps Formula: Amps = Watts / Volts I = P / E

P Power measured in watts, I is current measured in amps, and E is voltage measured in volts.