If you want to know how to apply for a solar permit in the USA, start here: there is no national permit. Each project goes through a local building authority, then a local inspection, then the utility. Installers who treat those as one process lose time at every handoff.
Quick answer. To apply for a solar permit in the USA, identify the authority having jurisdiction (AHJ) for the address, check whether it offers an automated path such as SolarAPP+, prepare a plan set to its adopted codes, and file through its portal with the fee. Clear plan review, file the utility interconnection application in parallel, pass inspection, then wait for the utility’s permission to operate.
TL;DR
- The permit comes from the city or county AHJ, not the state.
- Check for SolarAPP+ first. It issues permits in minutes for eligible residential systems.
- Draw the plan set to the code editions the AHJ has adopted.
- Start the utility interconnection application early. It runs on its own clock.
- The job is done at permission to operate, not at permit issue.
This guide is for installers and project managers who need the full sequence from address to energized system. If you already know the sequence and need the document list, use the solar permit package checklist. For the submission mechanics at the counter or portal, see how to submit a solar permit package to an AHJ.
Who issues a solar permit in the USA?
The authority having jurisdiction issues it. That is usually the city building department, or the county for unincorporated land.
States set some rules. They may adopt model codes, license contractors and engineers, or require automated permitting. But the application still goes to the local AHJ, and the inspection is local too.
Some projects need more than one approval:
| Approval | Who issues it | When it applies |
|---|---|---|
| Building or electrical permit | City or county AHJ | Almost every grid-tied system |
| Fire review | Local fire authority, sometimes inside the AHJ | Many rooftop and storage systems |
| Interconnection approval | Electric utility | Any system that connects to the grid |
| HOA approval | Homeowners association | Homes in an HOA, subject to state solar access laws |
| Zoning or historic review | Local planning department | Ground mounts, historic districts, some commercial sites |
How to apply for a solar permit in the USA: the 8 steps
Each step below has one output. Do not move to the next step until you have it.
- Identify the AHJ and its rules. Output: AHJ name, portal link, adopted code editions, local forms.
- Choose the review path. Output: automated, prescriptive or full plan review.
- Collect site data. Output: survey photos, roof framing, main panel rating, utility meter details.
- Prepare the plan set. Output: site plan, SLD, structural documents, labels, spec sheets.
- File the application and pay the fee. Output: permit application number.
- Clear plan review. Output: issued permit, or a correction letter to answer.
- Install and pass inspection. Output: final inspection sign-off.
- Get permission to operate (PTO). Output: written utility approval to energize.
The sections below cover what goes wrong at each step.
Step 1: how do you find the AHJ and its adopted codes?
Look up the address, not the city name on the mailing label. A “city” address can sit in unincorporated county land with a different AHJ.
Then confirm the code editions. US jurisdictions do not adopt the National Electrical Code (NEC) or the International codes on the same schedule. The NEC adoption by state guide gives the starting point, but the AHJ’s own adoption ordinance is the final word.
Step 2: which review path applies?
Check for an automated path first. SolarAPP+ checks code compliance online and issues permits for eligible residential systems. In a September 2026 release, the SolarAPP Foundation said more than 360 jurisdictions across 20 states use it (SolarAPP Foundation, 2026).
California goes further. Senate Bill 379 (2022) requires most cities and counties to offer automated permitting for home systems up to 38.4 kW AC and paired storage (SB 379 text). The California Energy Commission tracks local status on its residential solar permitting dashboard.
| Review path | Typical use | What you submit |
|---|---|---|
| Automated (SolarAPP+ or equivalent) | Standard residential systems in participating AHJs | Online system data, then inspection |
| Prescriptive or expedited | Simple systems that meet a local checklist | Short plan set and checklist |
| Full plan review | Commercial, complex roofs, storage, ground mounts | Complete plan set, often with engineering |
Eligibility differs by AHJ. Check the SolarAPP+ states guide and confirm the address in the platform before you plan around it.
Steps 3 and 4: what goes into the plan set?
The plan set must match the site and the adopted codes. Most correction comments come from mismatches, not missing sheets.
Core sheets for a residential rooftop system:
- Site plan with array, equipment and property lines.
- Roof layout with fire pathways and setbacks.
- Single-line diagram with conductors, overcurrent protection and the point of interconnection.
- Structural documents for roof framing and attachments.
- Labels and placards, including rapid shutdown under NEC 690.12.
- Spec sheets for modules, inverters, racking and storage.
Fire pathway rules are a common source of comments. Under the 2021 International Fire Code, Section 1205.2.1.2, arrays covering 33 percent or less of the plan view roof area need an 18-inch setback on both sides of a horizontal ridge.
Larger arrays need 36 inches (ICC text via UpCodes). Local amendments can change this, so verify with the AHJ.
Some AHJs also require an engineer’s seal on structural or electrical sheets. The solar PE stamp guide explains how to check.
Step 5: how do you file and pay?
Most AHJs now take digital submissions through a portal. Some still accept paper or email.
Before you upload, check three things:
- The applicant is a licensed contractor in that state, or the homeowner if owner-builder permits are allowed.
- File names and sheet order follow the portal’s rules.
- The fee matches the AHJ’s current schedule. The solar permit fees by state guide explains how fees are set.
Step 6: how do you clear plan review?
Plan review ends in one of two results: an issued permit or a correction letter. Answer every comment in a written response, with the revised sheets clouded and dated.
The common comment types are covered in why AHJs reject solar plan sets. If you get a letter, the AHJ comment response letter guide shows how to reply.
Fast tip. Check whether your utility accepts the interconnection application before the permit is issued. Where it does, file it while plan review is running so the two clocks overlap.
Step 7: what happens at inspection?
The inspector checks that the install matches the approved plans and the code. A field change that is not on the plans is a common reason to fail.
If you swapped equipment after approval, revise the plans before inspection. Sealed sets need a dated revision from the engineer, as covered in the equipment swap revision guide.
Remote inspection is growing. The same SolarAPP Foundation release notes California’s AB 1738. From January 1, 2028, it requires jurisdictions to offer remote inspections for rooftop solar and storage on one- and two-family homes.
Step 8: when can the system be turned on?
Only after the utility grants permission to operate. Passing the building inspection does not give you the right to energize.
The utility process has its own documents and review tracks. The solar interconnection application guide walks through it.
Watch out. Energizing before PTO can breach the utility's interconnection agreement. Tell the customer the real finish line at the sales stage.
How long does the whole process take?
It depends on the AHJ, the review path and the utility. Automated paths can issue a permit the same day, while full plan review can take weeks per round.
The solar permit approval time guide shows how the clocks vary. Plan the schedule around four separate clocks: design, plan review, inspection and PTO.
How Heaven Designs helps
Heaven Designs prepares AHJ-ready solar permit design plan sets for US installers. We draw to the AHJ’s adopted codes from your survey and equipment data, and we revise when plan review returns comments. State-specific pages sit under the US solar permit design hub.
To scope your next batch of permits, get a permit quote. We reply within one business day.
FAQ
Do I need a permit to install solar panels in the USA?
Almost every grid-tied system needs a local building or electrical permit and utility approval. Rules for small off-grid systems vary, so ask the AHJ.
Can a homeowner apply for a solar permit?
Some AHJs allow owner-builder permits. Many require a licensed contractor to pull the permit. Check the AHJ’s rules before you apply.
What is SolarAPP+?
SolarAPP+ is an online platform that checks residential solar and storage designs for code compliance and issues permits instantly in participating jurisdictions.
Does a permit mean I can turn the system on?
No. You need a passed final inspection and the utility’s permission to operate.
Do I need a PE stamp for a solar permit?
It depends on the state and the AHJ. Some require sealed structural or electrical sheets, and others accept prescriptive documents for simple roofs.