Arizona Solar Incentives, Cost & Payback (2026)
Written by Aditya Patil · Last updated 2026-09-24
Solar in the Grand Canyon State benefits from unmatched sun and a solid $1,000 state tax credit. However, understanding the shift from full-retail net metering to the Resource Comparison Proxy (RCP) is essential for evaluating your payback correctly.
$219
Avg. monthly bill
15.18¢/kWh
Avg. rate
$4.05/W
Real installed cost
LBNL Tracking the Sun
16 yrs
Est. payback (solar + battery)
typical household
Cost of solar in Arizona
Across Arizona, the true median residential installation cost sits at $4.05/watt, based on the latest public project data from the Lawrence Berkeley National Laboratory (LBNL). The data additionally indicates a typical system size of 8.51 kW leading to a gross price tag of $34,507 prior to rebates. (This breaks down to $4.05/watt on average for standard-sized setups, reflecting the difference between overall median cost and typical median size metrics.)
If your home consumes Arizona's high average of 17,341 kWh each year, you'd roughly need a9.69 kW array. The gross cost for that equipment comes out to $39,255 (9.69 kW × $4.05/W). Because the federal clean energy credit (§25D) expired at the end of 2025, your cash or loan net cost would drop only by the $1,000 state credit to $38,255.
Solar only, no battery
~40% self-consumption — standard AC use without storage means exporting peak midday power for pennies
$1,646 / yr
19-year payback · $56,115 over 25 years
Solar + battery
~65% self-consumption — a battery banks daytime production to run your AC well into the evening
$2,057 / yr
16-year payback · $70,127 over 25 years
Battery hardware cost isn't factored into these scenarios — check out our solar battery guide to price out storage options to add on top.
Incentives & rebates
Arizonans benefit from strong local incentives. The state tax credit reduces your tax liability by up to $1,000, while a robust set of property and sales tax exemptions ensure the equipment doesn't artificially hike your overall tax burden.
| Program | Amount | Status |
|---|---|---|
| Residential Solar and Wind Energy Systems Tax Credit | 25% of the total cost (including installation) of a solar or wind energy device, up to a maximum of $1,000 per residence per taxable year; unused credit may be carried forward up to 5 years. | open |
| Energy Equipment Property Tax Exemption | Solar energy devices designed to produce solar energy primarily for on-site consumption are valued at $0 for property tax purposes — 100% of the added property value from installing the system is exempt. Non-solar renewable energy equipment is valued at 20% of its depreciated cost rather than $0. | open |
| Solar and Wind Equipment Sales Tax (TPT) Exemption | Retail sales of solar and wind energy devices, and the gross income a contractor earns from installing them, are exempt from Arizona's Transaction Privilege Tax (TPT) — there is no dollar cap on this exemption. | open |
Net billing rules (RCP)
The era of 1:1 retail net metering ended in Arizona years ago. Regulated utilities like APS and TEP now follow the Resource Comparison Proxy (RCP). Under this net billing model, your daytime solar exports are credited at a lower fixed rate (currently around 5-7 cents, depending on your provider) that is evaluated annually by the Arizona Corporation Commission (ACC) and permitted to fall by up to 10% each year. Fortunately, whatever rate is active when you interconnect is locked in for 10 years.
| Policy | Resource Comparison Proxy (RCP) / Net Billing |
| Export valued by | Per-kWh rate set annually, declines up to 10% per year |
| Export rate vs. retail | Roughly 60-70% lower (~5.7¢/kWh export vs. ~15.2¢/kWh retail) |
| Export rate lock-in | 10 years from interconnection date |
| Exempt utilities | SRP (public power district) sets its own distinct export rates |
TEP's officially published RCP export rate was $0.0570/kWh for the tranche effective October 1, 2024 through September 30, 2025, per TEP's own program page. Multiple secondary sources (not independently confirmed against a readable APS primary tariff document during this research) report APS's RCP rate in the roughly $0.054-$0.077/kWh range across the 2025-2026 tranches; APS's own rate-schedule PDF exists (aps.com Renewable-Plans-and-Riders) but could not be parsed as text, so no single APS figure is marked verified here. SRP does not use RCP: its standard solar export price plans credit exports at a flat rate cited by secondary sources as roughly $0.0345/kWh, and SRP has also introduced a newer 'Renewable Export Program' that credits exports at a fluctuating real-time market price rather than a fixed rate, per SRP's own price-plan page.
Top utilities
| Utility | Residential rate | Customers |
|---|---|---|
| Arizona Public Service Co | 16.45¢/kWh | 1,256,120 |
| Salt River Project | 13.46¢/kWh | 1,053,407 |
| Tucson Electric Power Co | 15.63¢/kWh | 412,747 |
Batteries & VPP programs
Utilities in Arizona are increasingly turning to Virtual Power Plants (VPPs) to shore up grid reliability during punishing summer heatwaves. Homeowners with battery systems can get paid to help.
APS Storage Rewards (Virtual Power Plant)
APS's residential battery demand-response/VPP pilot pays customers $110 per average kW their battery contributes during 'conservation' dispatch events, called on up to 60 days each May 1-October 31 season (events run 1-4 hours between 4-10 p.m.). Requires an APS-approved battery (Tesla, Enphase, SolarEdge, Fortress Power, FranklinWH, or Emporia) that has received Permission to Operate. The program's official page shows active enrollment (via EnergyHub/ChargingRewards); note that a related, separately branded 'APS Residential Battery Pilot' page has been reported elsewhere as full/closed to new applicants, so enrollment status should be reconfirmed at signup.
SRP Battery Partner
SRP's residential battery pilot program (ACC-equivalent SRP board approval, running through April 30, 2030, capped at 5,000 participants) dispatches enrolled batteries during conservation events and pays customers roughly $55 per average kW of additional capacity delivered per season, per secondary program summaries; enrollment is handled through the Greater Grid platform or supported manufacturer apps (e.g., FranklinWH).
APS Storage Rewards
See az VPP program entry above — seasonal bill-credit program ($110/avg kW) for enrolled home batteries that discharge during APS-called conservation events.
SRP Battery Partner — enrollment rebate
SRP's 5,000-participant residential battery pilot paying an estimated ~$55/avg kW per season for dispatched capacity. See the VPP programs section above for dispatch details.
Lease vs. buy in Arizona
Because the federal clean energy credit is set to 0% for residential owners in 2026, exploring a solar lease or Power Purchase Agreement (PPA) is more appealing than ever. A leasing firm can claim business tax credits (§48E) on the panels they own on your roof, transferring some of those savings down to your monthly rate. Check out ourlease vs. buy vs. PPA guide for more details.
Estimate your own numbers
Every roof and energy bill is different. Try the solar calculator with your specific usage to visualize your potential Arizona savings.
FAQ
Is solar a good investment in Arizona right now?
Yes, because of Arizona's high air conditioning usage and excellent sun, but the financial mechanics rely more on battery storage today. Since the ACC ended full-retail net metering, sending extra power back to the grid only earns roughly 5 to 7 cents per kWh via the Resource Comparison Proxy (RCP) — significantly less than the 15.18¢/kWh average retail rate you pay. Maximizing payback now involves a home battery to shift that midday solar power to cover evening AC loads.
What solar incentives can Arizona homeowners get?
Arizona offers a solid mix of local incentives. The primary one is the Residential Solar and Wind Energy Systems Tax Credit, covering 25% of your system cost up to $1,000. Additionally, solar purchases are completely exempt from the state sales tax (Transaction Privilege Tax), and the added value to your home is 100% exempt from property taxes. Just remember that the federal solar tax credit ended in 2025.
How do SRP solar rules differ from APS and TEP?
Unlike APS and TEP, which are regulated by the Arizona Corporation Commission (ACC) and use the RCP framework, the Salt River Project (SRP) is a public power district that sets its own rules. SRP compensates solar exports using separate residential price plans, offering either a flat rate around 3.4 cents per kWh or a real-time fluctuating market price, making batteries even more critical for SRP customers.
Data sources
Last updated 2026-09-24
- U.S. Energy Information Administration — Electricity Data Browser — accessed 2026-09-24
- NREL PVWatts — accessed 2026-09-24
- NREL Solar Resource Data — accessed 2026-09-24
- LBNL Tracking the Sun (public data file, host-owned residential systems) — accessed 2026-09-24
Written by Aditya Patil