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Arizona prices, credit and rates checked 24 October 2026Cost of Solar Panels in Arizona 2026: $2.26/W, APS vs SRP Rules
Arizona solar averages $2.26 per watt before incentives on the EnergySage marketplace (state table, checked October 2026), below its $2.60 national average. That makes a 6kW system about $13,560, or $12,560 after Arizona's $1,000 state credit. The complication is the tariff: APS, SRP and TEP credit solar exports below the retail price, and Arizona's retail electricity is already cheaper than the US average, so payback is slower than the sun alone suggests.
Arizona Cost by System Size
| System size | At $2.26/W | After $1,000 state credit | Phoenix production* |
|---|---|---|---|
| 5 kW | $11,300 | $10,300 | 8,890 kWh |
| 6 kW | $13,560 | $12,560 | 10,660 kWh |
| 7 kW | $15,820 | $14,820 | 12,440 kWh |
| 8 kW | $18,080 | $17,080 | 14,220 kWh |
| 10 kW | $22,600 | $21,600 | 17,770 kWh |
| 12 kW | $27,120 | $26,120 | 21,330 kWh |
Cost columns are system size times EnergySage's $2.26/W Arizona average, before and after the $1,000 credit under ARS 43-1083 (25% of cost, capped at $1,000 per residence, so every size here reaches the cap). Your quote will differ with equipment, roof and installer. *NREL PVWatts v8 for Phoenix (33.45N, 112.07W): fixed roof mount, standard modules, 25-degree tilt facing south, 14% system losses, solar resource 6.62 kWh/m²/day. Run PVWatts for your own address and roof.
Why Arizona's Utility Rules Slow Solar Payback
Two things work against the strong sun. First, retail electricity is cheap by US standards: Arizona's residential average was 15.05 cents per kWh in August 2026, against 18.16 cents for the US (EIA Electric Power Monthly, Table 5.6.A). Second, the utilities do not credit exports at that retail price. APS and TEP pay an Export Rate Credit approved by the Arizona Corporation Commission; SRP, a public power district, sets its own customer-generation plans. Some plans also bill part of the cost as a demand charge on your on-peak power draw, which solar does little to reduce once the sun goes down.
An upper bound you can check: the 6 kW Phoenix system above makes about 10,660 kWh a year, and if every kWh replaced grid power at the 15.05-cent state average it would avoid about $1,604 a year. Real savings are lower, because exported kWh earn the export credit rather than the retail price and a demand charge is not reduced by daytime output. Ask each installer to model savings on your utility's current solar rate sheet and compare those, not headline paybacks.
Battery + Solar Math in Arizona
On a plan with an evening on-peak window or a demand charge, a battery lets solar do more: it charges from the panels at midday and discharges into the on-peak hours, cutting both the energy you import at peak prices and your peak draw.
EnergySage reports a typical all-in installed cost of $13,473 for a Tesla Powerwall 3 before incentives (marketplace quotes, May 2026). Whether that pays back depends on your plan's on-peak prices and demand charge, so have the installer show the bill with and without the battery on the same rate sheet.
Arizona Tile Roofs
Concrete and clay tile is common on Phoenix and Tucson homes. Installers usually lift tiles and fit tile replacement hooks (for example Quick Mount QHook or IronRidge tile hooks) rather than drilling through tile, replace any that break, and work more slowly than on composition shingle, so tile-roof quotes come in higher per watt. Ask for the tile work as its own line, including how broken tiles are handled. See the tile roof solar installation cost page for installation-method detail.
Frequently Asked Questions
How much do solar panels cost in Arizona in 2026?
EnergySage puts the Arizona average at $2.26 per watt before incentives (state table, checked October 2026, from quotes on its marketplace), below its $2.60 national average. At that rate a 6kW system is about $13,560, or $12,560 after the $1,000 Arizona state credit. The 30% federal credit ended for systems placed in service after 31 December 2025.
Why is Arizona payback slower than its sun would suggest?
The sun is strong: NREL's PVWatts models a 6 kW south-facing roof array in Phoenix at about 10,660 kWh a year. But Arizona's residential electricity is cheaper than the US average (15.05 cents per kWh in August 2026 against 18.16 cents, EIA Electric Power Monthly Table 5.6.A), so each kWh displaced is worth less, and the utilities put solar customers on rate plans where exports earn less than retail and some charges are based on peak demand rather than energy. How much of that applies depends on your utility and plan, so ask each installer to model savings on your utility's current solar rate sheet.
How do APS solar rate plans affect savings?
Arizona Public Service customers who add solar move onto one of its time-of-use rate plans, and exported energy is credited at an export rate approved by the Arizona Corporation Commission rather than at the retail price. Some APS plans also carry a demand charge based on your highest on-peak power draw, which daytime solar does little to reduce because the on-peak window runs into the evening. Check the current plan sheets on aps.com before comparing quotes.
What about SRP customers?
Salt River Project serves much of the Phoenix metro. It is a public power district, so its own board sets its rates rather than the Arizona Corporation Commission. Customers with solar take one of SRP's customer-generation price plans; SRP publishes their current charges and export credits on its solar pages, and those are the numbers a quote's savings estimate should use.
How does TEP compare?
Tucson Electric Power, like APS, is regulated by the Arizona Corporation Commission and credits solar exports at an approved export rate. Its residential plan options differ from APS's, so the same system can save different amounts in Tucson and Phoenix. Use TEP's current rate sheet for your plan.
Does Arizona have a state solar tax credit?
Yes. Arizona Revised Statutes 43-1083 gives a credit of 25% of the cost of a residential solar energy device, up to $1,000 for the same residence, claimed on Form 310. Unused credit carries forward for up to five consecutive taxable years. Any system costing $4,000 or more reaches the $1,000 cap. Separately, ARS 42-11054 says grid-tied photovoltaic systems are considered to add no value to the property for tax assessment.
What's the export-compensation rate in Arizona?
APS and TEP credit exported energy at an Export Rate Credit approved by the Arizona Corporation Commission, which is below the retail price; SRP sets its own export credit. The rates change over time, so take the current figure from your utility's solar rate page. Because exports earn less than imports cost, using your own solar output (or storing it in a battery for the evening) is worth more than exporting it.