Hybrid systems are still connected to the grid, but they include one very important feature, a battery bank. It is necessary to add a battery bank that allows the system to store energy and supply it in a stable way when needed.
In hybrid systems there are two types of loads: * critical loads * non-essential loads
Critical loads are represented by electrical devices that require back up when the power grid fails. These loads need to be separated from other loads and are connected to a different sub-panel.
Non-essential loads are electrical devices connected to the main panel that will not be backed up during the grid failure.