Interconnection Application
The formal request submitted to your utility for permission to connect a solar or battery system to the grid. Includes system specifications, single-line diagrams, and equipment datasheets.
Why It Matters
Interconnection is a separate process from building permits. Some utilities approve in days; others take months. Your installer should handle this paperwork.
Related Terms
Interconnection
The process of connecting your solar system to the utility grid, requiring utility approval and inspection.
PTO (Permission to Operate)
Formal approval from the utility allowing a grid-connected solar system to be energized and begin exporting electricity. PTO is the final step after installation and inspection.
Interconnection Fee
A fee charged by the utility to process the application for connecting a solar system to the grid. Ranges from $0 to $1,000+ depending on the utility and system size.