Patent ID: 7218998

Claim:
An autonomous power demand limiting system for a customer premises transformer which intelligently limits power demand comprising: at least one demand controller fed by a common customer premises transformer, each of the at least one demand controller being identified by a unique demand controller identification code, coupled to a main feed electrical line at the customer premises and configured to monitor the conditions under which the common customer premises transformer is operating and further comprising an interface coupled to a communications network in electrical communication with the demand controller; at least one load controller in communication with each of the at least one demand controllers, each of the at least one load controllers being identified by a unique load controller identification code and configured to have a load coupled to a relay, the relay with a unique relay identification code being configured to monitor and communicate the real-time current utilized by the load; wherein the communication network is selected from a group consisting of a public switched telephone network, a digital communications system and a legacy communication system and wherein each of the at least one demand controller determines the state of the local supply transformer from the monitored parameters and calculates a response to an out-of-range line condition that will bring the respective parameter back in range such that a shut off command is formulated for a known operating load and transmitted by the demand controller to the appropriate load controller using the unique load controller identification code, the appropriate load controller using the unique demand controller identification code, the load controller sending a shut off command to the relay with the unique relay identification code to shut off that operating load.