Solar Atlas · Arizona
Is solar worth it in Phoenix, AZ?
A 7 kWdc rooftop array in Phoenix makes about 12,285 kWh a year (NLR PVWatts, modeled) and pays back in 18.9 years at Arizona Public Service Co’s 17.1¢/kWh residential rate (Aug 2025–Jul 2026), with no federal credit. Exports follow APS Resource Comparison Proxy (RCP) export rate.
33.45°N · 9.8–14.2 h daylight · site signature
- Production
- 1,755 kWh per kWdc per year · capacity factor 20.0% AC
- Residential rate
- 17.1¢/kWh · Arizona Public Service Co
- Exported solar
- APS Resource Comparison Proxy (RCP) export rate · 5.55¢/kWh
- Climate
- hot desert (Köppen BWh) · 24.2 °C mean, 183 mm/yr
Source: NLR PVWatts v8.5.0 (NSRDB PSM V3 GOES tmy-2020 3.2.0) — 1 kW, tilt 20°, azimuth 180°, roof mount, 14% losses · fetched 2026-09-24 · modeled, not metered
Source: EIA-861M utility average · Aug 2025–Jul 2026 · EIA Arizona average Jan–Jul 2026 15.4¢ · utility’s EIA-861 2024 average 16.4¢
2 utilities serve parts of this ZIP — pick yours (the first is the most likely by statewide customer count, which is a weak signal where a city utility sits inside a larger utility’s territory).
Source: APS residential solar customers submitting an interconnection application 2026-09-01 – 2027-08-31 (Tranche 2026) · checked 2026-09-24
Source: NOAA NCEI Climate Normals 1991–2020, PHOENIX SKY HARBOR INTL AP, AZ US (6.6 km away) · fetched 2026-09-24
No federal credit: the homeowner credit (§25D) ended for systems installed after 2025-12-31. A lease or PPA price may reflect the lessor’s §48E credit. 26 U.S.C. §25D(h) and (e)(8)(A) · policy as of 2026-09-24
Make it your answer
Start from your bill. Everything else is prefilled from this page and can be changed.
Your exact roof, or a business
The payback calculator runs hourly PVWatts at your address. The Modeler opens a grid-tied home at Phoenix. A business goes to the Quote Studio with the 13.1¢/kWh commercial rate.