The Off-Grid Solar Rooftop System a.k.a Stand Alone Power System is not connected to the utility grid and uses an additional battery system. The capacity of the battery is determined by the capacity of the panels and its subsequent requirement. Designed to produce excess energy during the day, this system transfers energy to batteries, which in turn is used during the night or in cloudy conditions. It is a very powerful system that can supply eco-friendly and reliable solar power all over the year in remote areas.