Solar Panels in Arizona (AZ)

The average cost of an 8 kW solar system in Arizona is approximately $24,000 ($3.00/watt installed). Note: The federal residential solar tax credit (Section 25D) was repealed in early 2026, so the full system cost applies unless state incentives are available. State-level incentives may reduce your out-of-pocket cost. Get 3-5 quotes from local installers for accurate pricing.

The federal residential solar tax credit (Section 25D) was repealed in early 2026. Homeowners who installed solar before the repeal can still claim the credit for that tax year. Commercial solar projects continue to receive the 30% ITC under Section 48/48E. Arizona still offers state-level incentives that can reduce your solar costs. Consult a tax professional for the latest guidance.

Arizona's summer temperatures (110-120°F ambient, 150-170°F panel surface) cause significant efficiency losses. A panel with -0.35%/°C temp coefficient loses about 17.5% output at 75°C, while an HJT panel at -0.24%/°C loses only 12%. This 5.5% difference produces hundreds of extra kWh/year. Always choose panels with the best (closest to 0) temperature coefficient for Arizona installations.

An 8 kW solar system in Arizona produces approximately 14,800 kWh/year, saving about $2,072 annually at the average electricity rate of $0.14/kWh. The estimated payback period is 11.6 years. Over 25 years, total savings can reach $51,800.

Export Credit Rate (Varies by Utility): Arizona's major utilities each have different solar export policies. APS (Arizona Public Service) uses a Resource Comparison Proxy (RCP) rate for exports, averaging $0.03-$0.05/kWh — well below the retail rate. SRP (Salt River Project) charges demand-based rates that can make solar less attractive without batteries. TEP (Tucson Electric Power) offers more favorable export credits. Battery storage is increasingly important to maximize self-consumption.

Our top pick for Arizona is the REC Alpha Pure-RX 470W (22.6% efficiency, -0.24%/°C temp coefficient). The absolute best choice for Arizona's extreme heat. -0.24%/°C temp coefficient means this panel loses only 7.2% output at 55°C vs 10.5% for typical PERC panels. HJT technology also has the lowest degradation under UV stress.

The estimated payback period for an 8 kW solar system in Arizona is 11.6 years. This is calculated as: system cost ($24,000) divided by annual savings ($2,072/year). After payback, solar generates essentially free electricity for 15-20+ more years. State incentives may shorten this further.

Battery storage is strongly recommended in Arizona because export credits are lower than the retail electricity rate. A battery lets you store excess solar for evening use, maximizing self-consumption and savings. With the residential ITC repealed, battery costs are no longer offset by the federal credit, but batteries remain valuable for backup power and savings optimization.

Yes, Arizona offers state-level solar incentives: Arizona Residential Solar Tax Credit (25% of system cost, up to $1,000), Property Tax Exemption (100% exemption on added value), SRP EarthWise Solar Program (Varies by program year). Note that the federal residential solar tax credit (Section 25D) was repealed in early 2026. Check the DSIRE database for the latest program details.