Quick Facts
| Item | Detail |
|---|---|
| Authority Having Jurisdiction | Wake County Inspections & Permits |
| Phone | (919) 856-6222 |
| Permit Fee (estimate) | $175–$450 |
| Typical Approval Timeline | 7–14 business days |
| Required Inspections | Rough electrical, final electrical, building final |
| Primary Utility | Duke Energy Progress |
| PTO Timeline (post-final) | 20–30 business days |
County-Specific Requirement
Wake County requires both a building permit and a separate electrical permit for solar installations — submit both simultaneously. Duke Energy Progress requires a Conditional Approval Letter (CAL) before installation begins. The CAL is issued after Duke reviews the interconnection application. Submit the Duke DER application at duke-energy.com at the same time as county permits.
Required Documents
- Completed permit application — from Wake County Inspections & Permits
- Site plan / plot plan — showing panel location, setbacks, north arrow, scale
- Roof plan with panel layout — including IFC fire setback dimensions
- Single-line electrical diagram (SLD) — signed by installer
- Equipment specification sheets — panels, inverter, racking
- Structural engineering letter — required for systems over 10kW in most jurisdictions
- Permit fee — $175–$450 (verify current fee schedule with AHJ)
Interconnection: Duke Energy Progress
Duke Energy Progress: the Conditional Approval Letter (CAL) is required before the final county inspection can be completed. Submit Duke's Distributed Energy Resource Interconnection Application early to avoid scheduling conflicts between the CAL and your inspection date.
Full step-by-step guide: Solar Interconnection Application Steps.
File your Duke Energy Progress interconnection application at the same time as your county permit application. Both reviews run in parallel, saving 3–6 weeks off your total timeline to Permission to Operate.
HOA Solar Rights — North Carolina
For North Carolina HOA solar rights and a template approval request letter, see our HOA Solar Rights by State guide.
Frequently Asked Questions
Contact Wake County Inspections & Permits at (919) 856-6222 or use their online portal to schedule inspections. Your installer typically schedules inspections on your behalf. Inspections are generally available within 1–5 business days of scheduling, depending on the AHJ's workload. Confirm the inspection type (rough-in vs. final) and access requirements with your installer before the scheduled date.
The most common causes: incomplete application documents (missing SLD or spec sheets), plan revisions required by the AHJ (often fire setback issues), and utility interconnection queue delays. Submitting a complete, accurate package the first time and filing the Duke Energy Progress interconnection application simultaneously with the county permit are the two most effective delay-reduction strategies.
A properly permitted and inspected solar installation is generally covered under your homeowner's policy as a permanent home improvement. Notify your insurer after installation is complete and PTO is issued — some require a rider or endorsement for solar. Unpermitted installations may void coverage for fire or weather damage. See our guide: What Happens If You Install Solar Without a Permit.