Is solar worth it on a new construction home in Arizona?

Solar makes sense on many new Arizona homes, but you have to run the current numbers, not last year's. Arizona has some of the best sun in the country and brutal summer cooling bills, which is the case for going solar. The catch is that two big incentives shrank. The 30% federal Residential Clean Energy Credit ended for any system placed in service after December 31, 2025, so a home finishing in 2026 cannot claim it. Arizona still offers a 25% state tax credit capped at $1,000. And you no longer get full retail credit for the power you send back. New solar customers in metro Phoenix are on net billing, which pays a lower export rate than the old net metering. Solar can still pay off here, but the payback period is longer than it was in 2025.

This page lays out what changed, what incentives remain, and how to decide. Treat every dollar figure as a 2026 planning number and confirm current incentives before you sign, because tax and utility rules shift often.

What changed with the federal solar tax credit in 2026

The federal 30% solar tax credit is gone for systems that go live after December 31, 2025. The IRS Residential Clean Energy Credit page states plainly that the credit "is not available for any property placed in service after December 31, 2025." That credit, also called the Section 25D credit, used to cover 30% of the full cost of a home solar system, including panels, inverters, wiring, and battery storage. On a $25,000 system that was a $7,500 reduction in what you owed the IRS.

For a new construction home, "placed in service" means when the system is finished and ready to use. A home that gets its solar switched on in 2026 does not qualify, even if you signed the build contract in 2025. This is the single biggest change to the solar math in Arizona this year. If you were counting on a 30% federal credit, that money is no longer on the table for a 2026 completion.

The change came from the One Big Beautiful Bill Act signed in July 2025, which moved up the end date for the residential credit. Because tax law can change again, confirm the current federal rules with the IRS or your tax advisor before you budget around any credit. Do not assume a number you saw on an older website still applies.

What Arizona incentives still exist

Arizona keeps a state tax credit of 25% of the system cost, up to a maximum of $1,000, and that credit survives into 2026. Under A.R.S. 43-1083, a taxpayer who installs a solar energy device on an Arizona residence gets a credit of "twenty-five percent of the cost of the device," and "the maximum credit in a taxable year may not exceed one thousand dollars." You claim it on Arizona Form 310, filed with your state return. The $1,000 is a lifetime cap per residence, so you cannot stack it year after year on the same home.

There are two more Arizona breaks worth knowing. A solar energy device on your home is exempt from state sales tax when bought from a registered solar retailer, and the added value of a solar system is excluded from your property tax assessment. So adding solar does not raise the property taxes on your new home, even though it can raise the home's resale value. These are smaller than the lost federal credit, but they are real and they still apply.

Add it up and the incentive picture for a 2026 build is the Arizona $1,000 credit, no state sales tax on the equipment, and no property tax bump. That is a meaningful discount, but it is far less than the $7,500-plus a 30% federal credit gave on a typical system. Confirm the current Arizona credit and exemptions with the Arizona Department of Revenue before you file, since caps and forms can change.

How net billing changes the payback math

You no longer earn full retail credit for the solar power you export, which lengthens the payback period. New rooftop solar customers on Arizona Public Service (APS) are placed on net billing, not the old retail net metering. Under the old system, every kilowatt-hour you sent to the grid offset a kilowatt-hour you later pulled, at the full retail rate. Under net billing, your exported power earns a lower export rate set by the Arizona Corporation Commission, and that rate steps down a little each year for new customers.

In practice this means solar saves you the most when you use your own power as you make it, not when you sell it back. A new home with efficient HVAC, good insulation, and a battery captures more of that value, because the battery lets you store midday solar for the evening instead of exporting it cheaply and buying it back at a higher rate. The export credit still helps, it just does less work than it did under net metering.

Two numbers drive your real payback: your summer electric bill and the export rate. Arizona homes run their air conditioning hard from May through October, so a household with a large summer bill has more cost to offset and a faster payback. A home with a small bill, or one shaded part of the day, pays off slower. Check the current export rate with APS or your local utility, because the number is reset each year and the rate you start at is locked in for a set period.

How to decide if solar is worth it on your build

Solar is usually worth it on a new Arizona home if you plan to stay long enough to pass the payback point, which now runs longer than it did under the old incentives. The clearest wins are a home with high summer cooling load, a sunny unshaded roof, and an owner who will live there past the break-even year. The weaker cases are a shaded lot, a small electric bill, or a plan to sell within a few years.

Building solar into a new home, instead of adding it later, has real advantages. The roof is brand new, so you will not pay to tear off and reinstall panels for a re-roof. The structure can be designed for the panel load and the right roof pitch and orientation up front. You can also have the home pre-wired and made solar-ready during construction, which lowers the cost of the final install. A south-facing roof plane with no obstructions is the ideal canvas, and that is a design choice you make best before the slab is poured.

Run your own numbers before you commit. Get a written solar quote tied to your actual roof and your real APS or utility bill, ask for the payback estimate under current net billing, and confirm the current federal and Arizona incentives with a tax professional. The Arizona sun is a strong asset, but the value of solar on your specific home depends on your bill, your roof, and incentive rules that change year to year. Confirm the current incentives and export rates as of your build date, because a number that was right in 2025 may not hold in 2026.

How Jematell Homes helps

We build for the Sonoran Desert, not a generic climate. Every project is different, so we will confirm the specifics for your parcel and budget with you directly.

Sources

• IRS: Residential Clean Energy Credit (30%; not available after December 31, 2025)
• A.R.S. 43-1083 (Arizona credit for solar energy devices; $1,000 cap)
• Arizona Department of Revenue: Credit for Solar Energy Devices (Form 310)
• APS: Understanding Solar (net billing / RCP export credit)