Abstract: Power consumption is an important area which has various applications. However, in most cases, the amount of electricity consumed by an applicance is not readily apparent. Many devices are equipped with an information tag with states the power consumption ,but this is typically an average or maximum, and does not allow straightforward monitoring of such devices such as solid state TVs which often draw power even when "off”. The idea behind this is to measure & to monitor power consumption in household, an industry, particular locality at any certain time constant. The total power is obtained by multiplying by instantaneous voltage of the load from voltage sensor by instantaneous current of load from hall sensor and summing the results of multiple phases. The total power is calibrated to the full scale of power meter for display to the operator.