Litelsolar Pengyao: How to choose off-grid or grid-connected solar power system

Some customers call to inquire about the home solar power generation system, and ask what it means to be off-grid and grid-connected, and how to choose this. Today, the editor of litelsolar will briefly explain to you how to choose whether the solar power generation system is off-grid or grid-connected. 1. The difference between off-grid and grid-connected: Grid-connected solar power generation, home grid, and public grid are linked together. Solar power generation is directly converted into the required voltage for parallel power generation required by the national grid through inversion, and is given priority for home use. When solar power generation When the amount of electricity exceeds the amount of electricity used by household appliances, the excess electricity is transmitted to the public grid; and when the power generated by solar energy cannot meet the use of household appliances, it is automatically supplemented from the grid. The off-grid photovoltaic power station refers to the direct storage of the power generated by the photovoltaic power station in the battery, and then converted into the household 220V (380V) voltage through the inverter. Off-grid solar power is a system that operates independently of the grid. 2. Analysis from the perspective of investment: The grid-connected solar power generation system does not need to use batteries, which saves costs to a large extent. According to the 25-year service life of the household photovoltaic power station, the cost can be recovered in about six to eight years. The grid-connected photovoltaic power generation system is the current mainstream photovoltaic power generation system. The grid-connection policy issued by the state clearly states that household photovoltaic power stations can be connected to the grid for free, and excess electricity can be sold to power companies. The off-grid solar power station system must be equipped with batteries, and the initial cost is relatively large. From an economic point of view, it is not suitable for use in places where electricity is convenient. However, for households in areas without power grids or areas with frequent power outages, off-grid photovoltaic power plants have strong practicability. Especially in order to solve the lighting problem during a power outage, DC energy-saving lamps can be used, which is more practical. It can be said that off-grid photovoltaic power plants are specially used for places without power grids or areas with frequent power outages. Knowing these, let's see if there is a clearer answer on how to choose between off-grid or grid-connected solar power generation. The choice of off-grid or grid-connected is not static and depends on the installation location. Off-grid solar power is a good option for remote places without electricity.