What does the terms “Grid-Connected” and “Net Metering” mean?
“Grid-Connected” means the PV system is connected to the local electric grid such that excess electricity can be provided back to the grid if it is available. At other times some electricity is still provided to you by the grid. If the grid goes down, the inverter will automatically stop sending power from the PV system to the grid (to protect utility workers working on the lines). You will need to enter into an Interconnection Agreement with the utility for your PV system to make sure the connection is safe and proper. The agreement will also specify a “Net Metering” arrangement that defines how you can “bank” any surplus electricity your system provides to the grid. Typically you can use an equal amount of the “banked” electricity, when needed, without incurring any additional cost.
