There are two options. (a) If the grid goes down, your solar also is deactivated (b) If the grid goes down, your house is powered separately by solar, but dis

There are two options. (a) If the grid goes down, your solar also is deactivated (b) If the grid goes down, your house is powered separately by solar, but disconnected from the grid. In Germany the second is more common, while in parts of Florida, the first is required.