A grid-connected photovoltaic power system or grid connected Pv power system is an electricity generating solar PV power system that is connected to the utility grid . A grid-connected PV system consists of solar panels, one or several inverters , a power conditioning unit and grid connection equipment. They range from small residential and commercial rooftop systems to large utility-scale solar power stations.
Off-the-grid is a system and lifestyle designed to help people function without the support of remote infrastructure, such as an electrical grid. In electricity, off-grid can be stand-alone power system or mini-grids typically to provide a smaller community with electricity.