Arizona has world-class sun and brutal summer A/C bills — but APS and SRP replaced net metering with net billing, and SRP adds demand charges. Here is what solar really costs and saves in 2026.
Arizona should be a slam dunk for solar: relentless sun, punishing summer cooling bills, and some of the highest production per panel in the country. But the savings math is trickier than the sunshine suggests, because Arizona utilities moved away from full-retail net metering years ago, and SRP layers on demand charges that can quietly erode solar value. Here is the honest 2026 picture.
## What solar costs in Arizona (2026)
After the federal residential credit changes in 2026 (covered in our 25D guide), here is a realistic range for a quality owned system:
| System size | Typical gross price | Good fit for |
|---|---|---|
| 6 kW | $15,000–$19,000 | Smaller home, mild usage |
| 9 kW | $22,000–$28,000 | Typical AZ single-family |
| 12 kW | $29,000–$37,000 | Large home, heavy summer A/C |
Cash price per watt commonly lands around **$2.40–$3.10/W** before incentives for owned systems; financed deals run higher once dealer fees are baked in. Batteries add roughly **$9,000–$16,000+**.
## The Arizona incentive that still exists
Arizona offers a **state solar tax credit of 25% of system cost, capped at $1,000** — modest but real, and it stacks with any applicable federal benefit. There is also a sales-tax exemption on solar equipment and a property-tax exemption so your panels do not raise your assessed home value. These do not move the needle like the old federal credit, but they help.
## The catch: net billing, not net metering
This is the part salespeople gloss over. Under **net billing** (APS and TEP) and SRP''s solar plans, the credit you earn for exporting excess solar to the grid is **worth less than the retail rate you pay** to buy power back. So a kilowatt-hour you export at midday might credit you ~7–9¢, while you buy it back in the evening at ~13–15¢+.
The practical consequence: **self-consumption matters enormously in Arizona.** Power you use the moment your panels make it is worth full retail value; power you export is worth the lower export rate. This is why batteries pencil out better in Arizona than in net-metering states — storing your midday surplus to use during the expensive evening peak captures the full retail value instead of the discounted export rate.
## The SRP demand-charge trap
If you are an **SRP** customer, pay close attention. SRP''s most common solar plans include a **demand charge** — a fee based on your single highest hour of usage in the month, not just total kWh. Solar barely reduces a demand charge by itself (your peak might be a hot evening after the sun is down). A system sized only to offset kWh can disappoint on an SRP demand plan. Batteries — or careful load management — are often necessary to actually shave the demand peak. **Ask any installer specifically how their design handles the SRP demand charge.** Many will not bring it up.
## What good looks like in Arizona
- A proposal that models **net billing** export rates, not full-retail net metering.
- For SRP customers, an explicit plan for the **demand charge** (battery or load shifting).
- A battery analysis if your evening usage is high — AZ is one of the states where storage most often pays.
- The **cash price** clearly stated so you can spot financing markup.
## Questions to ask your AZ installer
1. "Did you model my savings on **net billing** (lower export rate) or net metering?"
2. "I am on **SRP** — how does this system handle the demand charge?"
3. "What is the **cash price** versus the financed price?"
4. "Does a battery improve my payback given my evening usage?"
## FAQ
**Is solar still worth it in Arizona without net metering?**
Often yes — Arizona''s sun and high A/C bills create strong savings — but the math now rewards self-consumption and batteries more than export. Model it honestly on net-billing rates.
**Why does everyone push batteries in Arizona?**
Because exported power is credited below retail, storing your midday surplus for the pricey evening peak captures more value. On SRP, batteries also help cut the demand charge.
**Does Arizona have a state solar tax credit?**
Yes — 25% of system cost up to $1,000, plus sales- and property-tax exemptions on the equipment.
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