The entire electrical load will be powered by solar alone.
On grid and off grid solar system difference.
An off grid system can also be called a stand alone solar power system.
Rv solar kits are a grid example of off grid solar.
Off grid solar systems require specialised off grid inverters and battery systems large enough to store energy for 2 or more days.
Figure 1 grid connected house image by clker free vector images from pixabay off grid power.
Off grid power system does not have any connection with the grid.
This drawback is converted into an advantage in the off grid solar system.
The working of the on grid system and off grid system is the same.
It works independently from the any utility power grid.
Hybrid grid connected systems use lower cost hybrid battery inverters and only require a battery large enough to supply energy for 5 to 10 hours overnight depending on the application.
Basically it is a solar power system that is off the grid thus the term off grid.
This system will create its own solar microgrid.
Your choice of an off grid system or on grid system will determine your access to electricity what equipment is needed for excess production what happens when the grid goes down and.
However there are disadvantages because off grid systems require you to purchase back up battery which can be expensive bulky and not very environmentally friendly which defeats the purpose of going solar save money and live greener.
The only difference is the battery backup.