NOVELTY - The method involves transmitting continuous scaled standard modulated signal for communication purposes by creating impedance modulation, where the modulation has a Powerline Communication (PLC) line coupler comprising a transistor i.e. MOSFET (42), connected to an electrical network and an impedance unit connected to the transistor in series to provide feedback information for transistor voltage regulation. A minimum voltage sufficient for power consumption and polarization of the transistor is applied through a linear amplifier.    USE - Method for leveraging standard modulated signals such as amplitude shift keyed (ASK) signal, frequency-shift keying (FSK) signal and Spread FSK (S-FSK) signals, in a smart grid system i.e. smart meter, and low frequency band (LFB) such as European Committee for Electrotechnical Standardization (CENELEC) band, over an electrical network i.e. direct current electrical network (claimed). Can also be used for Home Energy Management network, Plug-In Electric Vehicle (PEV), Photovoltaic (PV) solar power market, PV optimizer, Home Automation i.e. heating, ventilating and air-conditioning (HVAC) control system, and alternating current/direct current or direct current/direct current Power supply market.    ADVANTAGE - The method enables providing low cost line coupler to the smart grid system due to reduced number of components, ultra low power energy due to absence of powerline drivers in a communication interface, improve performances of the overall system due to need of less power supply for the overall system, and providing security and remote management to the system.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for an apparatus for impedance modulation transmitting continuous modulated signal for communication purposes in an electrical network.    DESCRIPTION OF DRAWING(S) - The drawing shows a circuit diagram of a line coupler in an alternating current power distribution environment.    Transmit block (19)    Input signal (23)    Error signal (33)    Command signal (37)    MOSFET (42)