Net metering allows an electric meter to turn – or, if digital, count – backwards when an on-site generator produces more energy than is being used. For example, if a DG system produces 1,000 kWh and a residence uses 1,800 kWh in a given month, the meter will only show 800 kWh used. Therefore, the bill will be for only 800 kWh. If the DG system produced the full usage of 1800 kWh, OEC will bill only the service availability charge. In short, Net Metering means OEC essentially buys back power at the retail rate as long as the DG system doesn’t produce more power than is used during the billing period.