A stand-alone DC power network is provided with a DC to DC power converter only, and does not have a converter that will convert AC to DC. In addition, each of the different terminals that provides the DC voltage at different levels will be ranked according to priority as to which ones are the most important to supply the full voltage to, and which ones are of secondary importance in the event there is insufficient power in the system to provide full voltage at the specified current for the different loads. A processor monitors the voltage and current at each of the terminals, and in the event a current is attempted to be drawn from the system which would cause a first priority terminal to be reduced in voltage, the processor will instead reduce the power provided to the second priority terminal and ensure that the first priority terminal does not have a significant reduction in the specified voltage or the amount of current supplied to that terminal at the specified voltage.