What is meant by grid-intertied or grid-connected?
A grid-intertied PV system is a solar electric system that is connected to the utility grid. The grid is the infrastructure that supplies power to homes and businesses. A grid-intertied system is capable of: (1) receiving electricity from the utility grid when its own output is inadequate to its needs, and (2) selling excess power to the utility, provided that the usual utility approval has been obtained and the necessary specialized equipment has been installed.
