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Off-grid photovoltaic power generation system is not limited by region, does not rely on the power grid. On-grid photovoltaic power generation system does not require batteries, which saves costs, and excess electricity can be sold to power companies

The difference between off-grid power system and on-grid power system

  • Xindun
  • August 04, 2020

Off-grid photovoltaic power generation system consists of photovoltaic modules, batteries, inverters, charge controllers and brackets. The off-grid power generation system does not rely on the grid to operate independently. When there is light, it converts solar energy into electric energy, and uses solar energy to control the inverter to supply power to the load while charging the battery; when there is no light, the battery powers the AC load through the inverter. Belongs to the spontaneous self-use model.

Application Scope: Rural and remote areas lacking electricity, areas with frequent power outages.

Advantages: It is not limited by region, does not rely on the power grid, and is widely used. As long as there is sunlight, the off-grid solar power system can be installed and used.


on-off-grid-photovoltaic-power-system


On-grid photovoltaic power generation system consists of photovoltaic modules, inverters, brackets, combiner boxes/grid boxes. The electricity generated by the photovoltaic modules is given priority to the load. When the load is not used up, the excess electricity is sent to the grid. When the power supplied to the load is not enough, the grid and the photovoltaic system can supply power to the load at the same time, which belongs to the "self-generation and self-use, surplus electricity to the grid" mode .

Application scope: People who want to meet their daily needs from the on-grid photovoltaic power generation system and profit from the excess electricity generated.

Advantages: In terms of configuration, storage batteries are not required, which saves costs; from an investment perspective, excess electricity can be sold to power companies to obtain revenue.