Alabama vs Iowa Solar Comparison
Alabama gets more sun (4.5 hrs/day) while Iowa has the faster payback (10.2 years).Alabama offers higher 20-year savings at $28,400.
Alabama
4.5 hrs
11.2yr payback
$28,400
20yr savings
Iowa
4.2 hrs
10.2yr payback
$28,400
20yr savings
Side-by-Side Comparison
| Metric | Alabama | Iowa |
|---|---|---|
| Peak Sun Hours | 4.5 hrs | 4.2 hrs |
| Cost per Watt | $2.95 | $3.10 |
| 6kW System Cost | $17,700 | $18,600 |
| Federal Tax Credit | 30% | 30% |
| State Tax Credit | None | None |
| State Rebate | None | None |
| Net Metering | Partial Net Metering | Full Net Metering |
| Electricity Rate | 14.87¢/kWh | 15.14¢/kWh |
| Payback Period | 11.2 years | 10.2 years |
| 20-Year Savings | $28,400 | $28,400 |
Verdict
Alabama is the better state for solar ROI with $28,400 in 20-year savings and a 11.2-year payback period. Alabama has more sun exposure at 4.5 hrs/day, making it ideal for maximum energy production. Both states qualify for the 30% federal solar tax credit.
Frequently Asked Questions
Is solar better in Alabama or Iowa?
Alabama gets more sun (4.5 peak hours/day vs 4.2). Iowa has a faster payback (10.2 years) and Alabama offers higher 20-year savings ($28,400).
How do solar costs compare between Alabama and Iowa?
A 6kW system costs $17,700 in Alabama vs $18,600 in Iowa before incentives. Both qualify for the 30% federal tax credit.
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Data verified March 2026 · Source: NREL, DSIRE, EIA