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.
Residential, grid-connected rooftop systems which have a capacity more than 10 kilowatts can meet the load of most consumers.They can feed excess power to the grid where it is consumed by other users.
Solar energy gathered by photovoltaic solar panels, intended for delivery to a power grid, must be conditioned, or processed for use, by a grid-connected inverter. Fundamentally, an inverter changes the DC input voltage from the PV to AC voltage for the grid.
- Grid-connected PV systems are comparatively easier to install as they do not require a battery system.
- On-grid systems are less expensive as compared to off-grid system as they don’t require battery.