OFF GRID refers to a Power Plant that generates electricity ONLY from Solar. This Power Plant is not connected to the utility grid (OFF the GRID) and is a standalone unit.
The electricity produced is stored in Batteries for later use. Off Grid Power Plants are used in Rural Areas, Where Electricity Grid is Non-Existent.
This ability to store energy also enables them to operate as a backup power supply during a blackout.Hybrid Power Plants are Common in areas of Frequent Power Cuts.