When your home battery is empty, it means that there is no more stored energy available in the battery. In this case, your house will likely rely on other energy sources, such as the power grid, solar panels, or another form of energy generation. Here are some possible scenarios:

1. Back to the power grid: If your home battery is empty, your house will likely start receiving electricity from the public power grid again. Your electricity consumption will be supplemented by the grid, just like before the installation of the home battery.

2. Solar panels: If you have installed solar panels, your house will depend on the energy that is being generated by the panels at that moment. During sunny hours, the energy will be directed from the solar panels directly to your house. If there is no direct energy generation (for example, at night or on cloudy days), your house will switch to the power grid.

3. Additional energy sources: Apart from the power grid and solar panels, your house may also use other energy sources, such as a generator or wind turbines, if you have them installed. These sources can serve as a supplement to your home's energy needs when the home battery is empty.

It is important to keep a close eye on the energy balance in your home and ensure that you have sufficient energy sources to meet your needs, especially when the home battery is empty. A well-integrated energy system can help guarantee a reliable and uninterrupted power supply.