What is an off-grid system?
To put it simply, an off-grid solar system is… off the grid. It are systems that operate completely independent of the network of the electric utility companies (the grid), and are also called stand alone, or island systems. If you want to be fully self-sufficient in the energy production for your house, or when you live in a remote place where there is no grid connection available, such a system is the best solution. It can become incredibly expensive to try and connect to the electrical grid when you live away from electricity power lines. Therefore, many people decide to go off-grid with their solar energy system.
Another advantage is that when you’re grid-tied, if there is a power outage, there’s nothing you can do about it but to wait until the power is back on. If you have an off-grid solar power system, you won’t experience these blackouts. The energy is stored and ready for potential disasters so you’ll always have that added protection. When other’s experience these power outages, you’ll be fine.
Basically, these systems have the following setup: