A residential off-grid energy storage system delivers electricity to homes off the main grid. It combines renewable sources (solar/wind), batteries (often lithium-ion), controllers, and inverters.Renewable energy is captured, stored in batteries, and converted to usable AC power via inverters. Controllers prevent overcharging. Ideal for remote areas, it offers energy independence and reduces fossil fuel use.Modern versions include smart monitoring for tracking production and usage. Some integrate backup generators for low-renewable periods. Improved battery tech has made these systems more efficient and affordable, enabling sustainable off-grid living.