Disclosed example welding power systems and methods monitor supply power inputs from a primary power source (108). The supply power is compared to current and/or power threshold values corresponding to limits associated with the primary power source. If the supply power exceeds a threshold value associated with the limits, the welding power system controls welding parameters or devices to adjust a supply power demand, thereby ensuring the draw on supply power does not exceed the capabilities of the power source. In some examples, the disclosed welding power system (102) presents a subset of welding parameters identified as available for operation based on the capabilities of the power source. The user interface (114) displays only the subset of available welding parameters to an operator for selection, thereby ensuring the draw on supply power does not exceed the capabilities of the power source.