Arizona · city guide
Solar in Phoenix, Arizona: city-level honesty
Phoenix is among the sunniest metros in the U.S., so production per panel is excellent — but summer cooling demand is enormous and export rules vary by utility (APS vs SRP). Size for the AC months, not the March average.
UtilityAPS or SRP (service-area dependent)
Sun (state)5.53 kWh/m²/dayState guideArizonaCity claimsIn review until verified
Honesty gate: state-level figures below are sourced; city-specific claims stay labeled in review until verified against primary local data.
- Utility: APS or SRP (service-area dependent)
- State guide: Arizona — export rules, incentives and source notes
- Measured sun (Arizona): 5.53 kWh/m²/day (source: 2024 solar radiation (GHI, kWh/m2/day) at each state's capital, Open-Meteo archive (ERA5 reanalysis), measured daily sums -> monthly means, fetched 2026-08-08. State-wide average for the capital's site; an exact roof differs (tilt, shade).)
What standing here means
Arizona export policies vary by service area — both utilities publish them; verified policy notes are tracked on the Arizona page.
The honest next step
City-level numbers come from real quotes, not websites: use the solar planning calculator with your bill and utility assumptions, then score three itemized bids with the quote scorecard.