The 10kW Off-grid Photovoltaic system is a small and medium-sized independent power supply solution that can achieve complete self-sufficiency of energy. It is suitable for remote mountainous areas, pastures, islands or independent residential buildings without stable grid coverage. 

The core of the system is composed of four major components: 

1. Photovoltaic module: about 30-40 325W solar panels, with a total capacity of 10kW, and is responsible for energy collection.

2. Battery pack: It is the energy warehouse of the system. It usually uses lead-acid or lithium batteries and needs to have an energy storage capacity of 40-60kWh to ensure that power can be continuously supplied for 2-3 days without sunshine.

3. Off-grid inverter: converts DC power generated by components and DC power stored by batteries into household AC power, while managing the operation of the entire system.

4. Controller: Coordinate the charging of the battery by the photovoltaic panel, prevent overcharging or overdischarge, and protect battery life.

    The average daily power generation of the system is about 40 degrees (kWh), depending on the sunshine conditions. It is enough to meet the daily electricity needs of a family for lighting, TV, refrigerator, water pump, air conditioning and some kitchen appliances. However, during design, the load needs to be accurately counted and energy-efficient electrical appliances are preferred. 

    The advantage lies in its independence of energy and is not affected by power outages in public power grids. The challenge is that the initial investment is high (mainly caused by expensive batteries) and the need for a meticulous awareness of energy management to avoid power interruptions on rainy days. 

    In short, a 10-kilowatt off-grid system is a reliable technical choice to break away from the power grid and achieve energy freedom, but its economy and practicality are highly dependent on users' electricity usage habits and local climate resources.