Net metering is a good way to sell your access electricity to WAPDA. It permits the clients to produce their own electricity effectively and efficiently. It is actually a billing mechanism that credits the solar energy system owner for adding the power to the grid.
For example, if a client Solar PV system creates more electricity than the home uses during sunlight hours. Now if the house is Net-metered, the power meter will run in reverse to give a credit against the electricity used by the house in evening where house’s electricity utilization exceeds the system’s yield. The clients are charged only for their “Net” electricity utility. The advanced digital bi-directional meter keeps running in both directions to accommodate electricity generated by clients Solar PV system.