Energy is stored to supply power for a number of needs. Battery systems can operate independent of the grid, or serve as an emergency back up to the grid(fully automated). With 16 millisecond switches it will keep sensitive loads secure and uninterrupted. With such a system, the size of the battery bank depends on how much, and how long, it is needed to run without any electrical input.
Independent systems (Off-grid)
Required is a balance of system, meaning there is enough input from solar, that your batteries are fully charged each day. An optional generator can also be integrated, as well as automated like the rest of your solar system.
Grid Interactive Systems (Grid-tied)
Grid interactive systems can help your home or business offset the target percentage of energy usage you desire. Panels send solar energy to inverters that change DC electricity into AC (alternating current) electricity. Power is then sentto your main panel. When generating more than you are using at that moment all excess goes back to the grid to be accredited. Production may be monitored with digital displays, as well as the internet.