US residential solar permitting in 2026 is shaped by three forces at once. Fewer homeowners are buying systems outright. More states are writing automated permitting into law. And a new National Electrical Code (NEC) edition is moving through state adoption. These USA solar permit trends for 2026 change how many permits you file, where you file them, and what each plan set must show.
Quick answer. The main US residential solar permit trends in 2026 are a smaller market after the Section 25D tax credit ended for systems installed after 2025, a shift toward third-party-owned systems, state laws that require or allow automated permitting (California, New Jersey, Florida, Texas), and the NEC 2026 edition entering state adoption. Each one changes plan set volume, review path, or code basis.
TL;DR
- The IRS says the 25D credit is not available for property placed in service after December 31, 2025.
- SEIA and Wood Mackenzie now forecast a 23 percent drop in residential installs for 2026.
- Four states have laws that require or allow automated or faster permit review.
- NEC 2026 was issued in August 2025. Only seven state baselines had moved to it by late September 2026.
This is a market and policy view. For permit timelines by state, see solar permit approval time by state. For where instant permitting works today, see SolarAPP+ states.
Trend 1: The residential market is smaller after 25D
The Residential Clean Energy Credit (Section 25D) paid 30 percent of the cost of qualified home solar. The IRS credit page now states that the credit “is not available for any property placed in service after December 31, 2025.”
The effect shows in installation data. The SEIA and Wood Mackenzie US Solar Market Insight Q3 2026 reports:
| Metric | Value |
|---|---|
| Residential installs, Q2 2026 | 995 MWdc |
| Change year over year | Down 12% |
| Change quarter over quarter | Down 10% |
| 2026 full-year forecast | Down 23% |
The report links the drop to the end of 25D for customer-owned systems. It also notes installers are struggling to move from cash and loan sales to third-party ownership (TPO).
What it means for permits: fewer residential filings overall in 2026. Each lost job raises the cost of a correction cycle on the jobs that remain.
Trend 2: More systems are third-party owned
With 25D gone, leases and power purchase agreements carry more of the residential market. SEIA names the shift to TPO as a key challenge for installers in 2026.
For plan sets, TPO changes who sets the design standard. A financier or lease provider may have its own equipment lists and document requirements on top of the AHJ’s. Ask for the funder’s checklist before design starts, not after the first rejection. The FEOC documentation guide covers one area where funders may ask for more paperwork.
Trend 3: States are writing automated permitting into law
Several states have moved from encouraging fast permitting to requiring or enabling it.
| State | Law | What it does | Status |
|---|---|---|---|
| California | SB 379 | Most cities and counties must offer online, automated permitting for residential solar and storage up to 38.4 kW | In force; deadlines were Sept 30, 2023 (over 50,000 people) and Sept 30, 2024 (5,000 to 50,000) |
| Texas | SB 1202 | Allows third-party review and inspection of documents, including home backup power installations | Signed June 20, 2025; effective Sept 1, 2025 |
| Florida | HB 683 | Lets private providers use automated plan review software; cuts review time for single-trade plans on 1 and 2 family homes from 20 to 5 business days | Signed June 13, 2025; effective July 1, 2025 |
| New Jersey | S4100/A5264 | Requires a statewide online, automated permitting platform for rooftop solar and batteries, run by the Department of Community Affairs | Passed December 2025; platform still being procured |
Sources: California Energy Commission, Texas Legislature Online, Florida Senate, HB 683 final analysis, and pv magazine USA (2025).
Florida HB 683 explicitly includes solar energy and energy storage installations as a single trade for private provider review. That makes the five-day review window relevant to most residential solar jobs that use a private provider.
What it means for permits: automated platforms only accept systems inside their rules. Plan sets need to be standard enough to pass software checks. Jobs outside the rules still go through manual review.
Trend 4: NEC 2026 is issued, but most states have not adopted it
The NFPA Standards Council issued the 2026 edition of NFPA 70 on August 20, 2025, with an effective date of September 9, 2025, according to UL’s Code Authority. “Effective” here is an NFPA date. A state or AHJ still has to adopt the edition before it applies to your permit.
Our state matrix, checked against official sources on September 26, 2026, found seven state baselines on the 2026 NEC: Arkansas, Colorado, Maine, Massachusetts, Minnesota, North Dakota, and Wyoming. Most others were on the 2023 NEC or older.
That gap creates a common error: designing to the newest NEC when the AHJ enforces an older one, or the reverse. Check the adopted edition for each project. Our NEC edition by state matrix and NEC 2026 changes for solar designers cover the detail.
How should installers respond to USA solar permit trends in 2026?
Use this checklist to match your permit workflow to the trends above.
- Confirm the financing path at intake. Cash, loan, or TPO decides which extra documents the plan set needs.
- Check the review path per address. Automated platform, private provider, or manual review. Each has different rules, and our US solar permit application guide walks through the manual path.
- Standardize your plan set templates. Automated systems reward consistent, complete sets.
- Confirm the NEC and building code edition. Do this for every AHJ, every job.
- Track corrections by cause. With fewer jobs, each rejection costs more.
Our solar permit design service prepares AHJ-ready plan sets for US installers, with the code basis checked per jurisdiction.
What we are not predicting
We are not forecasting permit counts or review times by state. No public source we checked gives a reliable 2026 national permit total. Market forecasts change every quarter, so recheck the SEIA figures before you use them in a plan.
FAQ
Did the 25D solar tax credit end?
Yes. The IRS says the credit is not available for property placed in service after December 31, 2025.
Which states require automated solar permitting?
California requires it for most cities and counties under SB 379. New Jersey’s 2025 law requires a statewide platform. Florida and Texas allow faster or third-party review paths. Check local rules for each address.
Is NEC 2026 in effect?
NFPA issued it in August 2025. It applies to a permit only where the state or AHJ has adopted it. As of September 26, 2026, our matrix found seven state baselines on it.
Will permits get faster in 2026?
Where automated platforms or private provider rules apply, review can be faster. Elsewhere, manual review times still vary widely by AHJ.
Plan for fewer jobs and stricter templates
The 2026 residential market rewards installers who get permits right the first time. Fewer jobs, more automated review, and a code cycle in transition all point the same way: standard, complete, code-checked plan sets.
If you want plan sets built for these review paths, request a permit quote. We reply within 1 business day.