This system includes an off-grid inverter and a grid-tie inverter. The grid-tie inverter works during the day, saving you money. The off-grid inverter only works when there is load shedding, ensuring that you have an uninterrupted power supply.
The term off-grid refers to not being connected to a main or national electrical grid. In electricity, off- grid can be a standalone power system or mini-grid that provides electricity to a smaller community. Off-grid electrification is an electricity solution used in countries and areas with little or no access to electricity, due to scattered or distant population. This can be any kind of electricity generation. The term off-the-grid (OTG) can refer to living in a self-sufficient manner without relying on one or more public utilities.
A grid-connected photovoltaic power system (grid-connected PV system) is connected to the utility grid and generates electricity by converting the sun’s power through PV modules (solar panels). The grid-tie inverters supplement the power grid during daylight. This PV inverter converts direct current from the PV module into alternating current for the grid. A grid-connected PV system consist 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.