Hi,
I would like to get the free source code of gsm based energy meter using 8051.

Every product or quantity we consume in our day-to-day life is measured using some measuring devices called as meters like tachometer used for measuring speed of electric motors or generators, voltmeters used for measuring voltage, ammeters used for measuring current and so on. Similarly, electric power we consume in our daily life is measured using electricity consumption meters for calculating the electricity charges. These electricity consumption meters are generally called as energy meters. There are different types of energy meters such as prepaid energy meters, induction type energy meters, analog or digital electric energy meters, three phase or single phase energy meters, electromechanical energy meters, microcontroller based wireless energy meters, smart energy meters and so on.