A load control device for use in an electrical power transmission network where the electrical power transmission network comprises: a plurality of subscriber premises for receiving electrical power, each including a plurality of user devices on a power supply circuit, at least some of which cause power factor variations when operated; transmission lines supplying electrical power with each of the subscriber premises having a drop from one of the transmission lines to a power supply inlet; the load control device being arranged for connection to a respective one of the power supply inlets for controlling the power supplied from the respective power supply inlet to the user devices on the respective power supply circuit; the load control device comprising: a sensing system for detecting variations in power factor caused by the user devices; a power correction system for applying reactive compensation components, wherein the reactive compensation components comprise a capacitive load, to the power supplied by the drop to the subscriber premises; and a control system for controlling the power correction system in response to variations detected; characterized in that the sensing system comprises a first meter configured to generate data at the drop and a second meter configured to generate data downstream of the power correction system, where both the first and second meters (22, 23) are configured to generate data on the same parameters obtained from the power supply circuit and where the first and second meters are configured to generate data relating to the standard true Root Mean Square, RMS, values of voltage, current and real power and wherein the control system is arranged to compare the data from the second meter with the data from the first meter to determine a level of improvement in the power factor obtained by the power correction system. a plurality of subscriber premises for receiving electrical power, each including a plurality of user devices on a power supply circuit, at least some of which cause power factor variations when operated; transmission lines supplying electrical power with each of the subscriber premises having a drop from one of the transmission lines to a power supply inlet; the load control device being arranged for connection to a respective one of the power supply inlets for controlling the power supplied from the respective power supply inlet to the user devices on the respective power supply circuit; the load control device comprising: a sensing system for detecting variations in power factor caused by the user devices; a power correction system for applying reactive compensation components, wherein the reactive compensation components comprise a capacitive load, to the power supplied by the drop to the subscriber premises; and a control system for controlling the power correction system in response to variations detected; a sensing system for detecting variations in power factor caused by the user devices; a power correction system for applying reactive compensation components, wherein the reactive compensation components comprise a capacitive load, to the power supplied by the drop to the subscriber premises; and a control system for controlling the power correction system in response to variations detected; characterized in that the sensing system comprises a first meter configured to generate data at the drop and a second meter configured to generate data downstream of the power correction system, where both the first and second meters (22, 23) are configured to generate data on the same parameters obtained from the power supply circuit and where the first and second meters are configured to generate data relating to the standard true Root Mean Square, RMS, values of voltage, current and real power and wherein the control system is arranged to compare the data from the second meter with the data from the first meter to determine a level of improvement in the power factor obtained by the power correction system.