A system comprising: an energy management system, called EMS hereinafter, configured to provide a demand response program signal, called DR program signal hereinafter, to a distribution grid, said DR program signal specifying a target load adjustment; a plurality of Demand Response Remote Communication Equipment, called DR RCE hereinafter, connected to phases of the distribution grid, each DR RCE configured to control an operation of one or more endpoint devices associated with each DR RCE wherein each endpoint device is connected to its DR RCE and is connected to the distribution grid so that each DR RCE is connected between the EMS and its associated endpoint device; and a plurality of Field Area Network Gateway devices, called FANG devices hereinafter, wherein each FANG device is connected to phases of the distribution grid, each FANG device is configured to receive the DR program signal, each FANG device is adapted to send a RCE program signal to its DR RCE for selectively controlling power to its endpoint devices in response to a received DR program signal, and each FANG device is configured to selectively reduce the total power applied to one or more of the plurality of its associated endpoint devices, and characterized in that each FANG device is connected between its corresponding substation transformer and a plurality of the DR RCE, wherein the FANG device comprises: a load analyzer configured to receive and analyze voltage and current waveforms which are indicative of voltage and current of the FANG device's corresponding DR RCE; a DR program controller responsive to the DR program signal and responsive to the load analyzer for generating DR program signals to be transmitted to each DR RCE; and a powerline communication system responsive to the DR program controller for transmitting the RCE program signals to each DR RCE, wherein the powerline communication system is adapted to use the voltage and current waveforms to communicate with the DR RCEs, wherein analyzing the voltage and current waveforms at the load analyzer comprises determining the voltage, current, and power of the FANG device's corresponding DR RCE and comparing the determined voltage, current and power to the DR program signal. an energy management system, called EMS hereinafter, configured to provide a demand response program signal, called DR program signal hereinafter, to a distribution grid, said DR program signal specifying a target load adjustment; a plurality of Demand Response Remote Communication Equipment, called DR RCE hereinafter, connected to phases of the distribution grid, each DR RCE configured to control an operation of one or more endpoint devices associated with each DR RCE wherein each endpoint device is connected to its DR RCE and is connected to the distribution grid so that each DR RCE is connected between the EMS and its associated endpoint device; and a plurality of Field Area Network Gateway devices, called FANG devices hereinafter, wherein each FANG device is connected to phases of the distribution grid, each FANG device is configured to receive the DR program signal, each FANG device is adapted to send a RCE program signal to its DR RCE for selectively controlling power to its endpoint devices in response to a received DR program signal, and each FANG device is configured to selectively reduce the total power applied to one or more of the plurality of its associated endpoint devices, and each FANG device is connected to phases of the distribution grid, each FANG device is configured to receive the DR program signal, each FANG device is adapted to send a RCE program signal to its DR RCE for selectively controlling power to its endpoint devices in response to a received DR program signal, and each FANG device is configured to selectively reduce the total power applied to one or more of the plurality of its associated endpoint devices, and characterized in that each FANG device is connected between its corresponding substation transformer and a plurality of the DR RCE, wherein the FANG device comprises: a load analyzer configured to receive and analyze voltage and current waveforms which are indicative of voltage and current of the FANG device's corresponding DR RCE; a DR program controller responsive to the DR program signal and responsive to the load analyzer for generating DR program signals to be transmitted to each DR RCE; and a powerline communication system responsive to the DR program controller for transmitting the RCE program signals to each DR RCE, wherein the powerline communication system is adapted to use the voltage and current waveforms to communicate with the DR RCEs, a load analyzer configured to receive and analyze voltage and current waveforms which are indicative of voltage and current of the FANG device's corresponding DR RCE; a DR program controller responsive to the DR program signal and responsive to the load analyzer for generating DR program signals to be transmitted to each DR RCE; and a powerline communication system responsive to the DR program controller for transmitting the RCE program signals to each DR RCE, wherein the powerline communication system is adapted to use the voltage and current waveforms to communicate with the DR RCEs, wherein analyzing the voltage and current waveforms at the load analyzer comprises determining the voltage, current, and power of the FANG device's corresponding DR RCE and comparing the determined voltage, current and power to the DR program signal.