Stand-Alone Solar PV systems are not connected to the electricity grid and typically are installed in remote areas where there is limited connection to the grid, or areas of low electricity demand.
Unlike their grid-connected counterparts, these systems must have batteries or back-up generation to provide supply at night. In many cases, they will also include a diesel or petrol generator to supplement energy supply.
How do Stand-Alone Solar Power Systems work?
A stand-alone solar system uses solar panels to charge large batteries which are then used for power during non-daylight hours. During the day, the electricity generated is used to power the home and charge the batteries. At night, and during rainy days, all necessary power is provided by the batteries.In some cases, where it is important that power is always available, some stand alone systems may also have another source of power such as a diesel generator.
Power generated from a stand alone system is considered DC (direct current), and is stored in a battery and converted to AC (alternate current).