CATEGORIES OF PV SYSTEMS

PV system:- 

The PV energy system can be divided into three basics categories. These categories are: grid-connected system without storage facility, grid-connected:-

system with storage facility (e.g., battery) and, off-grid PV system (mostly with battery). In an isolated or remote area with no grid access, the off-grid PV system with storage facility may only be reliable way for the habit-ants of these areas to have access to electricity. In addition, the off-grid system can facilitate grid extension to the remote area with relatively large scale mini-grid isolated system. The grid-connected system with storage facility can be a good option for areas with less reliable grid system. When the PV produces more energy than needed, the surplus energy is fed into the grid and, energy is taken from the grid when it produces less energy than needed. This grid-connected can either be a small scale (mostly, rooftop and building integrated PV, in kW) or large scale (in megawatt size).