Incompatibilities between power system characteristics and equipment tolerances have caused operating problems and loss of productivity in all kinds of power systems-putting facility engineers and system designers in the spotlight to provide effective and efficient solutions. A key element to formulating any solution is the cooperative effort, among power system designers, equipment manufacturers, and the electric utilities, to provide and maintain an acceptable level of load/source compatibility. IEEE Std 1100-1999, Recommended Practice for Powering and Grounding Electronic Equipment, provides good engineering practice that can be applied in the development of these solutions.