Arizona has plenty of sun, but solar payback in 2026 is slower than it used to be — typically 9-14 years, where 2025 buyers often saw 5-7. Two things changed at once: the federal 30% credit was repealed, and Arizona's major utilities have all moved to net billing, which pays less for exports.
Solar in Arizona still works. It's just become a "slow, positive" investment rather than the "rush to install" pitch you'll still see from sellers using outdated math.
What changed
Federal credit. The Residential Clean Energy Credit (§25D) — the 30% homeowner credit — was repealed for systems installed after December 31, 2025. For 2026 Arizona buyers, the federal credit on solar is $0. The same applies to home batteries purchased outright. Many Arizona solar sites still show 30% in their estimates. They're wrong. Full federal context here.
VERIFIED 2026-06 · irs.govNet billing, not net metering. APS moved off net metering years ago, and SRP removed net metering in November 2025. All major Arizona IOUs are now net billing: exports are credited at a rate well below retail. Self-consumed solar still saves the full retail rate.
Arizona retail rates: cheap is double-edged
Arizona retail electricity is ~13-15¢/kWh on APS — roughly a third of California's rate. Summer bills frequently hit $300-400, but the per-kWh price is genuinely low.
Cheap retail cuts both ways for solar economics:
- Every kWh your solar offsets is worth ~14¢ — not the ~33¢ a Californian saves.
- That means longer payback even though Arizona produces a lot of solar per kW installed.
The strong sun isn't enough on its own when the cents-per-kWh you're saving are small.
VERIFIED 2026-06 · eia.govWhat still works in Arizona
The state-level incentives didn't change with the federal repeal.
AZ state credit. 25% of system cost, up to $1,000 (A.R.S. §43-1083). For systems over $4,000, that's always exactly $1,000. Unused credit carries forward up to 5 tax years.
VERIFIED 2026-06 · A.R.S. §43-1083Property tax exemption. The added home value from solar is exempt from Arizona property tax.
Sales tax exemption. Solar equipment is exempt from Arizona state sales tax.
These three together help, but they don't close the gap from the lost federal credit.
Battery in Arizona: not automatic
This is where many Arizona solar sites — including the ones still showing 30% federal credits in their math — get it wrong.
A home battery makes economic sense when the retail-export gap is large. You store solar that would have exported cheaply, and use it later instead of buying expensive grid power. The size of the gap is what determines whether the battery pays for itself.
- In California (NEM 3.0): retail ~33¢, export ~7¢. Gap ~26¢. Battery is the lever.
- In Arizona: retail ~14¢, export well below retail. Gap is small. Battery doesn't have much room to capture savings on pure energy arbitrage.
There is one nuance: SRP customers face demand charges on the consumption side. A battery sized to shave demand peaks can reduce those charges — a real benefit beyond simple kWh shifting. That's specific to SRP customers and requires careful sizing.
The general claim "you need a battery for solar to pay off" is true in California. In Arizona it usually isn't. Our calculator shows the contrast side-by-side — same battery math, different state inputs, different outcomes.
The honest picture
Arizona solar in 2026:
- Federal credit: $0 — not 30%.
- Payback: 9-14 years for a typical purchase, vs. 5-7 years in 2025.
- 25-year savings: ~$20,000-$40,000 for most installations.
- Battery: usually doesn't pay off on energy arbitrage alone. Check your specific case if you're on SRP and your demand charges are large.
Solar still pays in Arizona, just slowly. The strong sun helps. The state credit and tax exemptions help. Rising utility rates are a real hedge over a 25-year horizon. But it's not the "act now, 30% credit" pitch that's still floating around online.
Before you commit:
- Get the federal credit out of your math. It's gone.
- Confirm whether you're APS, SRP, or TEP — the export rate differs.
- Run the calculator with your actual ZIP, system size, and utility.
- Don't assume a battery improves payback; check.
Estimates only — verify with your utility and a licensed installer. This is not financial advice.