Solar Payback Period in Arizona
Estimated payback, savings, and ROI for a residential solar system in Arizona — updated for 2026
Urgent tax credit deadlines
- Section 30D EV credit (up to $7,500) — expires June 30, 2026 (12 days left).
- Section 48E solar ITC safe harbor — construction must start by July 4, 2026 (16 days left).
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Solar ROI Overview for Arizona
Based on Arizona's average of 5.2 peak sun hours per day and utility rates of $0.129/kWh, a typical 7kW residential solar system in Arizona would:
- Cost approximately $18,900 before incentives
- Generate about 10,230 kWh/year
- Save you $1,320/year ($110/month)
- Pay for itself in 14.3 years
- Deliver a 75% ROI over 25 years
Arizona has excellent solar potential with above-average sun hours, making it one of the better states for solar investment.
Payback by System Size in Arizona
| System Size | Cost | Production | Annual Savings | Payback | 25yr ROI |
|---|---|---|---|---|---|
| 4 kW | $10,800 | 5,846 kWh | $754 | 14.3 yrs | 75% |
| 5 kW | $13,500 | 7,307 kWh | $943 | 14.3 yrs | 75% |
| 6 kW | $16,200 | 8,769 kWh | $1,131 | 14.3 yrs | 75% |
| 7 kW | $18,900 | 10,230 kWh | $1,320 | 14.3 yrs | 75% |
| 8 kW | $21,600 | 11,692 kWh | $1,508 | 14.3 yrs | 75% |
| 10 kW | $27,000 | 14,615 kWh | $1,885 | 14.3 yrs | 75% |
How Solar Payback Works in Arizona
Solar payback period is the time it takes for your cumulative electricity savings to equal the total cost of your solar system. In Arizona, the calculation depends on three key factors:
- System cost — $2.70/Watt average in Arizona
- Electricity rate — $0.129/kWh average utility rate
- Solar production — 5.2 average peak sun hours/day
After the payback period of 14.3 years, your solar panels continue generating free electricity for 15-20+ more years. With utility rates historically increasing 2-4% annually, your actual savings will likely exceed these estimates.
Arizona Solar Data Summary
- Average Cost/Watt
- $2.70
- Average Utility Rate
- $0.129/kWh
- Peak Sun Hours
- 5.2 hrs/day
- Data Coverage
- 10 ZIP codes
Related Tools for Arizona
Compare with Fastest Payback States
| State | Payback | Annual Savings | 25yr ROI |
|---|---|---|---|
| Arizona (you) | 14.3 yrs | $1,320 | 75% |
| Louisiana | 11.8 yrs | $1,537 | 111% |
| South Dakota | 13.5 yrs | $1,452 | 85% |
| West Virginia | 13.7 yrs | $1,433 | 83% |
| Minnesota | 13.8 yrs | $1,574 | 81% |
| Kentucky | 13.9 yrs | $1,359 | 80% |
📖 Complete Guide to Solar ROI
Want to understand every factor that affects your solar payback period? Read our comprehensive guide covering financing options, NEM policies, and how to maximize your returns.
Read: Complete Guide to Solar ROI in 2026 →