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Theft of electricity is the criminal practice of stealing electrical power. It is a crime and is punishable by fines and/or incarceration. It belongs to the non- technical losses. Electrical power theft detection and control system are used to detect the consumer when they try to use the power illegally. Electricity theft happens when the customer uses energy meter tampering such as placing a magnet near to energy meter, disconnecting the neutral line and shorting the phase coil of the current transformer. To identify and control power theft here an intelligent system is introduced. It consists of current sensors that are used to measure the actual load current and the other is to measure the turning back or neutral current. The microcontroller Arduino will be used to send the power signal to Wi-Fi. If the meter box is open the online message will display that meter tampering occurred. Hence the power vendor can easily identify the customer who is illegally consuming the power for that energy meters. Moreover, when there is an occurrence of theft the relay will disconnect the load from the supply.