What home solar costs in Duncan - and the 2026 rules that changed the math
The solar industry is still quoting like it is 2025, but the 30% federal credit died on December 31, 2025. Here is what a Duncan homeowner actually pays in 2026, what Arizona still offers, and how to compare quotes without getting played.
Installed home solar for Duncan homeowners averages about $2.58 a watt across the U.S. marketplace - roughly $30,960 for a 12 kW system before incentives.
The 30% federal solar tax credit ended for installations finished after December 31, 2025 - Duncan systems completed in 2026 get $0 from it.
Under Arizona's export rules, compensation for surplus power decides the payback - which typically runs 10-14 years on unsubsidized 2026 math.
Duncan, Arizona has about 671 residents, and its solar quotes are built from system size, roof complexity and export rules - not the town name.
The single biggest change for Duncan homeowners in 2026: the federal 30% tax credit is gone. A $31,000 system that effectively cost $21,700 in 2025 now costs the full $31,000. That does not automatically make solar a bad buy in Arizona - but it makes the state rules below matter far more.
Door-to-door solar sales in Duncan run on urgency and outdated math. The two facts that defuse most pitches: the U.S. marketplace average is about $2.58 a watt installed, and the federal credit expired for systems finished after December 31, 2025. Any quote built on either being different needs proof.
What installed solar costs in 2026
| System size | Installed price (marketplace avg) | Notes |
|---|---|---|
| 6 kW | $15,480 | Small roof / low usage |
| 8 kW | $20,640 | Typical starter system |
| 10 kW | $25,800 | Family home with AC |
| 12 kW | $30,960 | Large home / EV charging |
| Home battery (optional) | $12,000-$16,000 | Backup power + self-consumption |
Compare solar quotes for Duncan
These platforms collect bids from licensed installers so you can compare against the same spec. Prices come from installers, not from this site.
Disclosure: this is an independent guide. If you request quotes through a link here, the platform may pay this site a referral fee. That fee never changes your quotes.
The 30% federal tax credit is gone for 2026 installations
The federal Residential Clean Energy Credit (30%) was repealed by the One Big Beautiful Bill Act signed July 4, 2025. Per the IRS, the credit is not available for any property placed in service after December 31, 2025 - and the IRS counts the installation completion date, not the contract date.
Arizona rules that decide your payback
| Rule | Arizona status |
|---|---|
| Export compensation (net metering) | Traditional retail net metering is CLOSED to new customers; exported energy is bought back under an avoided-cost export rate (Resource Comparison Proxy, RCP), set annually by the Arizona Corporation Commission, well below the retail rate. The rate in effect when a customer requests interconnection is locked in for 10 years, and the RCP may not fall more than 10% per year. Customers interconnected before the 2018 cutover were grandfathered on net metering for 20 years. |
| State incentive | Credit for Solar Energy Devices (Arizona Form 310, A.R.S. 43-1083) - a nonrefundable state income tax credit equal to 25% of the device cost, capped at $1,000, with unused amounts carried forward up to five consecutive tax years. |
| Sales tax on the system | Exempt |
| Property tax on added home value | Excluded |
A.R.S. 33-1816 says an HOA "shall not prohibit the installation or use of a solar energy device" and may only adopt placement rules that do not impair the device's function, cost or efficiency, with attorney's fees awarded to a homeowner who prevails; separately, Arizona's $156 million "Solar for All Arizonans" low-income rooftop solar program is suspended - the Governor's Office of Resiliency received an EPA grant termination notice on August 7, 2025 and states the program "is unavailable until further notice."
This guide is research, not advice: an independent summary of published prices and state rules. It is not an installer, lender or tax advisor - verify incentive eligibility with a licensed tax professional before relying on it.
Why only these platforms
A quote that beats everyone by 30% is not a bargain - it is a company pricing for survival, and in the 2026 shakeout that bet usually loses. Fair pricing sits near $2.58 a watt; what separates good money from wasted money is who is left standing to honor the warranty.
Solar lead generation is where most industry abuse lives, so this guide only links platforms that show you multiple named installers and let you walk away - never single-installer funnels or phone-blast forms. If a platform falls below that bar it gets removed from every page on this site.
| Platform | What you get | Background |
|---|---|---|
| EnergySage | Side-by-side bids from multiple installers | The largest U.S. solar marketplace; publishes its pricing data publicly |
| Modernize | Matched with vetted local installers | Established home-services network (QuinStreet); installers are screened |
Getting quotes in Duncan
Marketplace platforms collect bids from multiple AZ installers against the same spec, which is the only clean way to compare - same roof, same size, different prices. Getting quotes is free and does not commit you to anything; prices come from the installers, never from this site.
- Your last 12 months of electricity bills - sizing should follow real usage
- Roof age and type - reroofing after panels go up is expensive
- Your utility's export rate under Arizona rules - it decides the payback
- Whether you want backup power - that is a battery decision, priced separately
- Written itemization: hardware, labor, permits, and any financing dealer fee
Reading a Duncan roof honestly
Marketplace platforms collect bids from multiple AZ installers against the same spec, which is the only clean way to compare - same roof, same size, different prices. Getting quotes is free and does not commit you to anything; prices come from the installers, never from this site.
This guide is research, not advice: an independent summary of published prices and state rules. It is not an installer, lender or tax advisor - verify incentive eligibility with a licensed tax professional before relying on it.
Common questions
How do I check if a solar quote is fair?
Divide the total price by the system's wattage. The U.S. marketplace average is about $2.58 per watt installed; $2.30-3.00 covers most fair quotes depending on roof complexity. Above that, ask exactly what you are paying extra for - in writing.
Should I lease, get a PPA, or buy?
Buying keeps all savings and any incentives with you. Leases and PPAs put a company's equipment on your roof for 20-25 years, complicate a home sale, and in 2026 any tax benefits they advertise belong to the company under commercial rules - not to you. Read escalator clauses carefully.
How much does home solar cost in 2026?
The U.S. marketplace average is about $2.58 per watt installed - roughly $15,500 for a 6 kW system and $31,000 for 12 kW, before any state incentives. Quotes meaningfully above that level deserve a written explanation of what justifies the premium.
Do I need a battery with my solar?
Not necessarily. Under full retail net metering, the grid effectively stores your surplus for free. Batteries earn their $12,000-16,000 price where export rates are low, outages are common, or time-of-use rates make evening self-consumption valuable.
Is there still a federal solar tax credit in 2026?
No. The 30% Residential Clean Energy Credit was repealed effective for systems placed in service after December 31, 2025, per the IRS. Only systems finished by the end of 2025 qualified. State-level incentives are separate and some survive - check the state page in this guide.
How long do solar panels actually last?
Panels are typically warrantied for 25 years of production and commonly outlive it, losing about 0.5% output per year. Inverters are the component that usually needs replacement - typically once, around year 12-15, at a few thousand dollars.
Compare solar quotes for Duncan
These platforms collect bids from licensed installers so you can compare against the same spec. Prices come from installers, not from this site.
Disclosure: this is an independent guide. If you request quotes through a link here, the platform may pay this site a referral fee. That fee never changes your quotes.