When we talk about a power grid we are referring to the network that delivers electricity to our homes. An off-grid system is designed to help people function without the support of this network.
How Off-grid system works?
Off-grid systems can be used to provide small communities with electricity, or those people that prefer to be self-sufficient and not rely on public utilities for their power. As solar and wind technologies become more available and are improved, off grid power is in greater demand (Although not commonly used).