BACKUP SPLICE FOR ISLANDING

In one implementation of a backup splice for anti-islanding, a system includes a wire cutter that severs an electrical wire (e.g., a main service line within a main electrical panel) within a microgrid of a residential unit, commercial unit, or other electrical system from the power grid. The system also includes multiple splices to provide an electrical connection on the electrical wire on each side of the wire cutter. A relay is configured to close to enable or complete the electrical connection along the electrical wire and open to disconnect one or more distributed energy resources (DERs) (e.g., a battery or solar panels) from the power grid. The system further includes a controller that opens the relay in response to detecting a power outage in the power grid, thereby preventing the islanding of the microgrid or the DER.