Solar Panel Cost in Arizona (2026 Estimate)

BySunMetricLab Editorial Team·Independent solar research and calculators

Data last updated September 10, 2026 · ranks #7 of 50 states for modeled payback

Arizona averages about 6.5 peak sun hours a day (well above the national average) with an approximate residential electricity rate near 14¢/kWh, on the lower end nationally. In the model used here, an 8 kW system in Arizona produces roughly 15,180 kWh a year and trims about $2,100 off annual electricity costs, paying back its net cost in about 7.1 years. Strong sun, high electricity prices, or both put Arizona among the faster paybacks in this comparison, and solar tends to make financial sense here for homeowners with suitable roofs.

Want the full picture beyond the numbers? Read the guide Arizona Solar: When Extreme Heat Works Against Your Panels.

Estimated system cost and payback in Arizona

Costs assume roughly $2.70/watt installed for Arizona; the net column applies a 30% federal credit for comparison with quotes that include it. Savings and payback use the state's sun hours and rate above.

The 30% federal Residential Clean Energy Credit ended for systems paid for after December 31, 2025 under the 2025 federal budget law. Net-after-credit figures apply only if you still qualify (for example a 2025 expenditure, or a leased system where the installer passes a credit through). Confirm with a tax professional.

What moves the numbers in Arizona

Two inputs drive most of the difference between states: how much sun a system sees and what each offset kilowatt-hour is worth. Arizona's 6.5 sun hours set production, and its roughly 14¢/kWh rate sets what that production saves. The bigger unknowns are your roof, shading, and how your utility compensates exported power, since a lower export rate can pull real savings below the retail-rate figure above.

Net metering and export credits in Arizona

The Arizona Corporation Commission ended retail net metering in 2016 and replaced it with a net billing structure for the utilities it regulates, including APS and TEP. Power you use on site still offsets retail purchases, but anything sent to the grid is credited at an export rate derived from the Resource Comparison Proxy method, which is well below the retail price. That export rate is reset for new customers each year and can decline by up to 10 percent annually, though whatever rate you interconnect under is locked in for ten years.

Salt River Project is a public power district outside the Commission's jurisdiction and sets its own solar terms, historically pairing a low export credit with a demand-based price plan for solar customers. APS also requires solar homes to take service on a time-of-use or demand plan and applies a grid access charge tied to system size. Because exports earn so much less than retail, self-consumption and battery pairing carry more weight in Arizona than the raw amount of sunshine suggests.

Arizona solar incentives beyond the federal credit

Arizona provides a state income tax credit for residential solar equal to 25 percent of the installed cost, capped at 1,000 dollars per residence. Solar equipment is exempt from state transaction privilege tax, and a separate statute treats solar devices as adding no value to your home for property tax assessment, which avoids a higher tax bill after installation. These three provisions have been stable for many years, but confirm the tax credit form and rules with the Arizona Department of Revenue when you file.

Utility incentives shift more often. APS and SRP have each run residential battery incentive programs in recent years, and some cooperatives such as Trico and Sulphur Springs Valley have offered their own solar or storage terms, so check the current offering before assuming a rebate.

Utilities and rate plans in Arizona

APS serves the largest share of the state, including most of metro Phoenix, Flagstaff and Yuma; SRP covers much of the East Valley and central Phoenix; TEP serves Tucson and UNS Electric covers Mohave and Santa Cruz counties. Cooperatives including Trico, Sulphur Springs Valley, Mohave Electric and Navopache handle rural areas. Summer air conditioning dominates household usage, and both APS and SRP push solar customers onto plans with late-afternoon peak pricing or demand charges that reward shifting load away from the 4 to 7 pm window. A system oriented partly west, or a battery that discharges during the evening peak, usually improves savings more than simply adding panels.