Over the last few years, Smart Prepaid Energy Meter has been proposed as an innovative solution aimed at facilitating affordability and reducing the cost of utilities. If the number is valid then receive the recharged amount from the service provider.
The GSM uses its own network for the transfer of information. In thisproject he used ZigBee module on both sides. Smart energy meters will bring a solution of creating awareness on unnecessary wastage of power and will tend to reduce wastage of power. The present system of energy billing in India is error prone and also time and labour consuming.
In this system GSM digital power meter installed in every consumer unite and electricity ebillingsystem at the energy provider side. The Power to Communication P2C is used to interface the impulse and synchronisation count from the power meter optocoupler circuit and to store the power meter reading into the internal non EEPROM memory at single impulse count interval.
This system also can be used to disconnect the power supply to the house in case of non-payment of electricity bills. The printed billing also has the tendency of getting lost. MejbauiHaque  develop a microcontroller based single phase digitalprepaid energy meter for improved meter and billing system.
Enter the card number. The microcontroller pulls the SMS received by phone, decodes it, recognizes the Mobile no. The coding emphasis the fact that it reduces human labour but increases the efficiency in calculation of bills for used electricity.
It is used to create the hyper terminal window in Windows 7 OS. Hung Cheng Chen  proposed a wireless automatic meter reading system in Amit Jain , proposed a prepaid meter using mobilecommunication in When the electricity is consumed, then the recharged amount will get decremented.
This reduces human labour and at the same time increases the efficiency in calculation of bills for used electricity. The use of Prepaid Energy meter is still controversial.
It is hoped that this work helps the consumers for better energy management and its utility in the distribution system for economic liability of the Electrical Boards.
The recorded data need to be processed by a meter reading company. The meters currently in use are only capable of recording kWh units. For processing the meter reading, company needs to firstly link each recorded power usage datum to an account holder and then determine the amount owed by means of the specific tariff in use.
Readings made by human operators are prone to errors. Thissystem is divided into two part such as client and server.
If the number is invalid then enter the correct number. This mechanism, essentially, requires the users to pay for the electricity before its consumption. This module will reduce the burden of energy providing bye stablishing the connection easily and no theft of power will takes place.
When the recharged money gets over, the relay cut-off the household power supply. In this project he used GSMmodem for transmitting and receiving information, both sides means user side and energy provider side.
Manual billing is sometimes restricted and delayed by bad weather conditions. Rs 50, RsRs etc. The complete demonstration of GPMDC from meter reading, notification, payment, distribution control of power cut-off and power restoration are being done. During the time of power restoration the microcontroller circuitry used here retrieves back last meter reading and to continuous synchronous with the digital power meter.
Some tags can be read from several meters away and beyond the line of sight of the reader. This paper work exposes the purpose of energy monitoring and controlling by implementing prepaid system.
The LCD is interfaced to microcontroller using parallel port connection.
Radio-frequency identification RFID is an automatic identification method, relying on storing and remotely retrieving data using devices called RFID tags or transponders. Rodney Tan  develop an automatic power meter reading system using GSMnetwork. Also they can monitor the meter readings regularly without the person visiting each house.
Configure the GSM and send number to the service provider. An RFID tag is an object that can be applied to or incorporated into a product, animal, or person for the purpose of identification and tracking using radio waves. We can easily implement many add-ons such as energy demand prediction, real time dynamic tariff as a function of demand and supply and so on.I am doing project on prepaid energy mint-body.com, I want to know which microcontroller will be most feasible for mint-body.com we have to use smart card card and if possible gsm also.
Reply Tarun Agarwal says. RFID BASED PREPAID ENERGY METERBASIC IDEA: A scheme of Electricity billing system called "PREPAID ENERGY METER WITH TARIFF INDICATOR" can facilitate in improved cash flow management in energy utilities and can reduces problem associated with billing consumer living in isolated area and reduces deployment of manpower for.
PREPAID ENERGY METER 1 N.H. COLLEGE OF ENGG. DEVELOPMENT OF GSM BASED EMBEDDED SYSTEM FOR PREPAID ENERGY METER. Introduction: The concept of this project is similar as any mobile communication & this project is. The project is designed for reading electrical energy consumed in units and in rupees to display on an LCD screen to the user.
This data is also provided to the electrical department using GSM technology for billing purposes. Smart Card Based Prepaid Energy Meters In this type of prepaid energy meter, there are two main components; one is smart card and another one is smart card. “GSM Based Prepaid Energy Meter” system consists of Energy Meter and the GSM Network.
The system provides efficient power meter reading, usage notification and consumers maximum demand using GSM network. GSM modem utilizes the GSM network to send equivalent unit for the recharge amount to the Microcontroller and .Download