Depending on whether the system is connected to the grid, home energy storage systems can be divided into grid-connected systems and off-grid systems. The core difference lies in whether they are connected to the grid. Currently, most areas use grid-connected and off-grid integrated systems.
(1) Grid-connected systems, photovoltaic, and energy storage systems can be connected to the grid, and electricity can be purchased from the grid when the photovoltaic or battery power is insufficient. It is suitable for areas with stable power systems and relatively low electricity prices.
(2) The off-grid system is suitable for areas such as deserts and islands without a grid or areas where the grid is unstable and requires self-use. Use an off-grid energy storage converter, usually with a diesel generator interface, to supplement power at night when the battery power supply is insufficient.
(3) On-grid and off-grid all-in-one machine, which has the function of switching between on-grid and off-grid or integrates the on-grid and off-grid modes in one machine, and can complete the switch to off-grid mode during a power outage. It is suitable for unstable power systems and frequent power outage areas.
