Solar Panel Costs and Savings in Arizona (2026 Guide)

Arizona’s abundant sunshine makes it one of the most naturally favorable states for solar in the country, though the intense heat and utility-specific export policies both matter for a realistic estimate.

Why Arizona’s sun hours matter so much

Arizona has among the highest average peak sun hours of any of the 15 states in our state guides — more sun hours per day means a given system size produces more annual electricity, which generally allows for a smaller, less costly system to offset the same usage compared to a less sunny state. Use our calculator with Arizona’s specific sun-hour average to see how this plays out for your own usage.

A note on heat and panel performance

While Arizona has outstanding sun exposure, extreme heat can modestly reduce panel efficiency compared to cooler, equally sunny conditions, since panels — like most electronics — perform somewhat less efficiently at very high temperatures. This is a secondary effect compared to the benefit of abundant sun hours, but it’s part of why a proper installer’s production estimate (not just a generic sun-hours calculation) matters for Arizona specifically.

Incentives available in Arizona

• Federal tax credit: The 30% federal tax credit applies in Arizona the same as nationally.
• State tax credit: Arizona has historically offered its own state income tax credit for solar installations — confirm the current amount and cap with the Arizona Department of Revenue or your installer, since state program details can change.
• Equipment and sales tax exemptions: Arizona has historically exempted solar equipment from certain state sales tax, reducing upfront cost — again, confirm current details, as tax policy can be updated.

Net metering varies by utility

Unlike some states with a single statewide net metering policy, Arizona’s largest utilities have moved toward net billing structures where excess exported electricity is compensated at a rate below full retail — check your specific utility’s current policy (APS, SRP, TEP, and others each have their own structure) since this meaningfully affects the value of exported electricity versus self-consumption. See our net metering guide for the general concept behind this.

Cooling loads and solar sizing

Arizona’s hot climate means high air conditioning usage drives a large share of many households’ electricity bills, particularly in summer — a proper system sizing should account for this seasonal usage pattern rather than assuming flat year-round consumption.

Bottom line

Arizona’s exceptional sun hours make it one of the most naturally efficient states for solar production, and a state tax credit alongside the federal credit can meaningfully improve the financial case — but utility-specific net billing policies mean it’s worth checking your specific utility’s export compensation rate before assuming a straightforward one-to-one net metering benefit.