Abstract: An apparatus especially adapted for use in AC power systems of the type having a device for reducing power consumption by reducing load voltage, the apparatus having a sensor for detecting an increase in load current and for controlling a responsive increase in load voltage to compensate for the added load causing the increase in current. The apparatus can be used in three-phase AC systems for controlling each phase independently and can be made sufficiently sensitive to operate in a 28,000 Watt fluorescent light load while responding to as little as 400 Watt load additions to assure quick and efficient ignition of newly turned-on lights. A digital memory device, in the form of a state machine in the preferred embodiment, is used to control operation and timing for one to three phases while permitting low line voltage override and periodic timing override operation.