Permission to operate, or PTO, is the utility's authorization for an interconnected solar system to operate normally with the electric grid. Installation and local inspection can occur before PTO. The homeowner should wait for explicit activation instructions.
The utility reviews interconnection
The utility may review system size, equipment, protection settings, application documents and inspection records. Meter work or account changes may also be required.
PTO timing is not controlled by one company
Installers submit and coordinate, but utility workload and corrections can affect timing. Ask for the application status and whether the utility needs anything from the homeowner.
Activation includes more than flipping a switch
After approval, the team may commission equipment, confirm monitoring, explain shutdown procedures and verify account or billing setup. Save the PTO notice and final documents.
What to confirm before you move forward
- ✓Wait for written authorization
- ✓Track the interconnection application
- ✓Complete meter requirements
- ✓Confirm monitoring after activation
- ✓Save PTO records
What homeowners ask next
Is PTO the same as inspection approval?+
No. Local inspection and utility permission are related but separate milestones.
Can I turn the system on early?+
Follow installer and utility instructions. Unauthorized operation can create safety and compliance issues.
Will billing change immediately?+
Utility billing and meter updates may follow the utility's process and cycle.
For current rules and consumer information, use official sources and review the exact agreement offered for your home.