Devices, systems and methods are provided that introduce electrical components to alter the electrical characteristics of power delivery systems in residential and commercial power circuits to: prevent the disaggregation of electrical utility consumption data by alteration of the composite load profiles. The device and method prevent accurate identification of powered devices, their presence, their operating characteristics, their consumption data, and any inferences of power device user's behaviors and activities by the analysis of disaggregated data. The operation of the device may include any of a range of steps, actions and instructions to introduce altering impedance elements and filtration circuits in coordinated fashion with the operation of the targeted devices to be masked.