Now a day's the gap between energy generation and demand is increasing. To overcome this problem, the use of generation of energy from renewable sources will satisfy the consumers need. This system also helps to reduce monthly energy bill and also generate error free bill. In this paper, we are using energy which is generated by renewable energy sources and whatever surplus energy is export to the grid. This will reduce the monthly energy bill of consumer by crediting the exported energy charges. The proposed bidirectional smart net metering consists of voltage and current measurement circuit. This measures the instantaneous voltage and current respectively. Then aurdino calculates the net energy by using measured values of voltage and current also the net output energy displayed through LCD. This is interfaced with aurdino at regular interval. Experimental result shows the accuracy in calculating the net energy of system.