An independent system on its own, an off-grid system is built to stand alone which means it operates without having power from the grid at all. The off-grid is perfect for power-starved areas that do not get any power supply from their electric utility, or areas that constantly suffer from grid failures. The off-grid system includes power storage and needs batteries to work. In this type of system, power is stored to the battery to be able to provide electricity all the time. This system is high maintenance and can be costly because of the occasional battery and charge controller replacements.