The photovoltaic off-grid power generation system operates independently without relying on the power grid and is applied in remote mountainous areas, areas without electricity, islands, communication base stations, and street lamps. The system consists of photovoltaic arrays, solar controllers, inverters, battery banks, and loads. Under sunlight, the photovoltaic arrays convert solar energy into electricity, which is supplied to the loads and charges the battery banks through the solar control inverter; when there is no sunlight, the battery banks supply power to the AC loads through the inverter.

The photovoltaic off-grid power generation system is specifically designed for areas without a power grid or those with frequent power outages. It is a rigid demand. The off-grid system does not depend on the power grid but operates on a "store and use simultaneously" or "store first and use later" mode, providing essential support in times of need. For families in areas without a power grid or those with frequent power outages, the off-grid system is highly practical. Compared to grid-connected systems, its cost is much higher, but compared to the cost per kilowatt-hour of fuel generators, it is more economical and environmentally friendly.