In Arizona, an 8 kW home solar system typically costs about $17,600 to $22,200 before incentives, roughly $2.20 to $2.77 per watt. Because Arizona uses net billing, not retail net metering, MySolarFY’s model puts the cash payback near 11 to 13 years. Very high sun and a $1,000 state tax credit help; low export credits are the headwind. The 30% federal homeowner credit ended after December 31, 2025, so 2026 buyers cannot claim it.
Arizona homeowners pay about 15.48 cents per kWh for electricity (EIA retail sales, residential AZ, as of April 2026), close to the U.S. average. What makes Arizona different is not the rate, it is the sun: a rooftop here produces roughly 1,700 to 1,780 kWh a year for every kilowatt installed, among the highest in the country. The catch is how you get paid for extra power. Arizona utilities use net billing, so exported energy is credited at a low export rate rather than the full retail rate, which stretches payback compared with true net-metering states. This page shows what an 8 kW system actually costs here, walks through our dated Arizona payback model under net billing, and shows the inputs so you can check the numbers against your own bill. For how much solar costs nationally, see how much solar panels cost across the country; this page is the Arizona-specific version of that math. For the full picture of going solar in the state, incentives, utilities, and how it all fits together, start with our Arizona solar guide.
How much do solar panels cost in Arizona?
Budget about $2.20 to $2.77 per watt installed for residential solar in Arizona in 2026. For a common 8 kW system, that works out to roughly $17,600 to $22,200 before incentives, with a representative price near $20,000 at about $2.50 per watt. Arizona runs a bit below the national average per watt, thanks to a large, mature installer market and easy year-round installation weather. Your exact number depends on the equipment, roof complexity, and installer, which is why comparing more than one written quote matters (marketplace averages via SolarReviews and EnergySage Arizona). Arizona also exempts solar equipment from the state transaction privilege (sales) tax and exempts the added home value from property tax, so that price is not padded with state sales tax and your assessment does not jump (EnergySage, AZ solar incentives).
According to MySolarFY’s model (August 2026), a cash-bought 8 kW Arizona system producing about 14,100 kWh a year returns roughly $1,500 to $1,900 in year-one bill savings under net billing, plus a one-time $1,000 state tax credit, which puts a representative cash payback near 11 to 13 years and most homes in a 9 to 15 year range depending on utility. The inputs and math are shown below so you can rerun them with your own numbers.
The Arizona payback math, step by step
Arizona payback turns on one thing more than any other: how your utility credits the power you export. Under net billing, energy you use inside the house the moment your panels make it offsets grid power at the full 15.48 cents, but surplus you send back is credited at a lower export rate. Our model combines both. Here are the exact inputs we used.
| Input | Value we used | Source |
|---|---|---|
| System size | 8 kW (a typical AZ home system) | MySolarFY model assumption |
| Gross cost | About $20,000 (at ~$2.50/W; range $17,600 to $22,200) | SolarReviews, EnergySage AZ market averages |
| Annual production | About 14,100 kWh/year (14,041 Phoenix, 14,240 Tucson) | NREL PVWatts v8, 8 kW, Phoenix 85003 and Tucson 85701, TMY |
| Retail electricity rate | 15.48 cents/kWh (offsets power you use on-site) | EIA, residential AZ, April 2026 |
| Export credit (net billing) | APS about 6.2 cents, TEP about 5.1 cents, SRP as low as ~1.9 cents/kWh (verify your utility) | Solar United Neighbors, AZ, EnergySage AZ |
| State tax credit | 25% of cost, capped at $1,000 (Form 310) | Arizona DOR, Form 310 |
| Federal 25D credit | $0 (ended December 31, 2025) | IRS, SEIA |
Year-one value, and why the export rate matters so much:
- Power you use on-site: every kilowatt-hour your home consumes the instant the panels make it avoids buying grid power at 15.48 cents. In hot Arizona, daytime air conditioning lines up well with peak solar output, so a large share of production offsets at that full retail rate.
- Power you export: surplus you send to the grid is credited at your utility’s export rate, not the retail rate. That rate is about 6.2 cents on APS and about 5.1 cents on TEP, but as low as roughly 1.9 cents on SRP’s standard plan, so the same exported kilowatt-hour is worth very different amounts depending on who serves you (Solar United Neighbors).
- State tax credit: Arizona gives a one-time income tax credit of 25% of system cost, capped at $1,000, claimed on Arizona Form 310, with any unused amount carried forward up to five years (Arizona DOR, Form 310). See the full stack in our Arizona solar incentives guide.
Blended together, that is roughly $1,500 to $1,900 in year-one bill value for a typical 8 kW system. Take off the $1,000 state credit and divide the roughly $20,000 gross cost by that yearly value, and you get a representative simple payback near 11 to 13 years. On APS or TEP with strong daytime self-use, it can land closer to 10 years; on SRP’s low export credit, or with a home that exports a lot of its production, it drifts toward 14 or 15, which is why we quote a range rather than a single number. Savings are not guaranteed; your roof, usage, utility, and financing all move the result, so get a written production estimate before you decide.
Because the export rate is low, a home battery changes the math more in Arizona than in most states: storing midday surplus to use after sundown lets you offset power at the full 15.48 cents instead of exporting it for a couple of cents. That raises the up-front cost, so weigh it against your utility’s export rate and your evening usage rather than assuming it always pays.
About net billing in Arizona: Arizona ended full retail net metering for new residential solar; instead, utilities credit exported energy under a net-billing export rate set through the Arizona Corporation Commission (APS and TEP) or by the SRP board. APS uses a Resource Comparison Proxy rate that steps down over time, TEP publishes its own export price, and SRP credits exports at a low avoided-cost-style rate on its standard solar plan. Arizona has no statewide SREC market, so there is no separate credit to sell. Because these export rates change and differ by utility and plan, confirm your current export rate before you sign, and ask a tax professional about the Form 310 credit for your situation. MySolarFY does not provide tax advice.
See your real Arizona solar cost and payback
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Is solar worth it in Arizona?
Yes, for most owner-occupied Arizona homes with a sunny roof and steady daytime power use. The state’s world-class sun does the heavy lifting: at roughly 1,700 to 1,780 kWh per kilowatt each year, an Arizona roof produces far more than the same panels in a cloudier state, so even at an average retail rate the annual bill offset is large.
The trade-off is net billing. Because exports earn a low credit, the math rewards using your own power as you make it, and it favors APS and TEP customers over SRP’s lower export rate. Where it works less well: a heavily shaded roof, a very low electric bill, a home that exports most of what it makes, or a plan to move within a few years. If you want the national framing of this question, see is solar worth it in 2026 and how Arizona stacks up in the state solar payback index for 2026. This page is the Arizona-specific answer, so you do not need a separate worth-it calculation.
How you pay changes the payback, and who keeps the credit
The payback above assumes you own the system with cash. How you finance it changes both the up-front cost and who collects the export credits and the state tax credit, which is the most misunderstood part of an Arizona solar quote.
| How you pay | Up-front cost | Who keeps export credits + state credit | Effect on payback |
|---|---|---|---|
| Cash | Full price (about $20,000) | You | Fastest payback, about 11 to 13 years |
| Solar loan | Little or none, financed over time | You | Interest extends it, but you keep the credits and the state credit |
| Lease or PPA | $0-up-front where you qualify | The third-party owner keeps them | No payback to calculate; you pay a lower or fixed power price instead |
If you own the system through cash or a loan, you keep the export credits, the Form 310 state credit, and the sales and property tax exemptions, and the payback math on this page applies. If you lease or sign a PPA, the company that owns the panels keeps the export credits and the state credit, and your benefit is a lower or fixed power price with no up-front cost rather than a payback you calculate. Neither path gives a 2026 Arizona homeowner the federal residential credit, since that credit ended after December 31, 2025. For the utility-by-utility detail on how exports are credited, read how Arizona net billing pays you for solar exports.
Why Arizona payback differs from the high-net-metering states
Arizona has the best sun in the country but not the best payback, and net billing is the reason. In states with near-retail net metering, every exported kilowatt-hour offsets the full retail rate, so a big, sunny roof pays back fast. In Arizona, exports earn a low credit, so the value is concentrated in the power you use on-site.
That makes two things matter more here than elsewhere: your utility’s export rate and how much of your own power you use during daylight. For how the credit mechanics work in detail, read how Arizona net billing pays you for solar exports and how net metering credits your solar exports for the contrast with full-retail states. For a national payback comparison, see the state solar payback index for 2026.
What could change your Arizona number
Four things move your Arizona cost and payback the most: your roof, your utility, your daytime usage, and the current export rate.
- Your roof. Pitch, orientation, and shade move production up or down, and production drives your bill offset. Estimate yours with NREL’s free PVWatts calculator.
- Your utility. APS, SRP, and TEP each set their own export rate, and those rates differ a lot, so the export half of the math moves by territory. Compare local quotes for Phoenix and Tucson to see how it plays out where you live.
- Your daytime usage. The more of your own solar you use as you make it, especially for air conditioning, the more of it offsets at the full retail rate instead of the low export rate.
- The export rate. APS steps its rate down over time and SRP sets a low standard rate, so confirm the current value for your utility and plan before you sign.
MySolarFY matches you with licensed installers that serve your area so you can compare real local quotes side by side, with no obligation. Exploring a specific market? See our local guides for Phoenix and Tucson, and for the numbers behind our estimates, see our data sources and how we research each page.
Frequently asked questions
How much do solar panels cost in Arizona in 2026?
Residential solar in Arizona runs about $2.20 to $2.77 per watt installed in 2026, so a typical 8 kW system costs roughly $17,600 to $22,200 before incentives, with a representative price near $20,000 (market averages via SolarReviews and EnergySage). Arizona exempts solar equipment from the state transaction privilege (sales) tax and exempts the added value from property tax, so neither is added on top. Your exact price depends on equipment, roof complexity, and installer, so compare more than one written quote.
What is the solar payback period in Arizona?
MySolarFY’s model puts the representative cash payback near 11 to 13 years for a typical 8 kW system, with most homes in a 9 to 15 year range. The math combines about $1,500 to $1,900 a year in bill value, part at the full 15.48 cents per kWh for power you use on-site and part at your utility’s lower export rate, against a gross cost near $20,000, minus a one-time $1,000 state tax credit. APS and TEP customers with strong daytime use land faster; SRP’s low export rate is slower. Savings are not guaranteed.
Does Arizona have net metering?
Not full retail net metering for new residential solar. Arizona uses net billing, so the power you use inside your home offsets the full retail rate, but surplus you export is credited at a lower export rate set by your utility, about 6.2 cents on APS and about 5.1 cents on TEP, and as low as roughly 1.9 cents on SRP’s standard solar plan. That is why using your own solar during the day, and your choice of utility, matter so much to the payback in Arizona.
Is the federal solar tax credit part of the Arizona payback?
No. The 30% federal Residential Clean Energy Credit (Section 25D) ended for expenditures made after December 31, 2025, under the One Big Beautiful Bill Act, so an Arizona homeowner who buys solar in 2026 with cash or a loan cannot claim it. Our payback model uses $0 for the federal credit. Arizona’s own incentives, the 25% state tax credit up to $1,000, the sales tax exemption, and the property tax exemption, were not affected and carry the payback along with the state’s very high solar production.
Is solar worth it in Arizona?
For most owner-occupied homes with a sunny roof and steady daytime power use, yes. Arizona’s roughly 1,700 to 1,780 kWh per kilowatt each year is among the highest production in the country, so the annual bill offset is large even at an average retail rate. It works less well on a heavily shaded roof, with a very low electric bill, on SRP’s low export rate if you export most of your production, or if you plan to move within a few years. Get a written production estimate for your specific roof and utility before deciding.
Reviewed by SolarFY Editor and the MySolarFY team, reviewed August 2026. Arizona cost, production, rate, export-credit, and incentive figures were computed and verified against NREL PVWatts, EIA, the Arizona Department of Revenue, Solar United Neighbors, and IRS sources as of August 2026; the cost-per-watt range reflects SolarReviews and EnergySage market averages. Export rates and incentive amounts change by utility and plan, so confirm current terms with each source before you decide. MySolarFY does not provide tax or financial advice; consult a licensed professional about your own situation. Learn more about the MySolarFY team and how we work.
MySolarFY is a free service that matches homeowners with licensed solar installers. We are not an installer, financing company, or government program. Costs, production, and payback are modeled estimates, not quotes, and your results vary with your roof, usage, utility, equipment, and financing. “No up-front cost” refers to qualifying lease or PPA financing, where eligible homeowners may have no out-of-pocket cost at installation; on a lease or PPA the export credits and the state tax credit go to the company that owns the system, not the homeowner, and total payments may exceed the cost of a cash purchase. Homeowners do not get the federal residential credit that ended after December 31, 2025. Solar panels are not free and monthly payments apply. Eligibility, savings, incentives, and rates vary and are not guaranteed. See our full disclaimer.
