Alabama vs Hawaii Solar Comparison
Hawaii gets more sun (5.5 hrs/day) while Hawaii has the faster payback (4.8 years).Hawaii offers higher 20-year savings at $72,400.
Alabama
4.5 hrs
11.2yr payback
$28,400
20yr savings
Hawaii
5.5 hrs
4.8yr payback
$72,400
20yr savings
Side-by-Side Comparison
| Metric | Alabama | Hawaii |
|---|---|---|
| Peak Sun Hours | 4.5 hrs | 5.5 hrs |
| Cost per Watt | $2.95 | $3.50 |
| 6kW System Cost | $17,700 | $21,000 |
| Federal Tax Credit | 30% | 30% |
| State Tax Credit | None | 35% |
| State Rebate | None | $5,000 |
| Net Metering | Partial Net Metering | Full Net Metering |
| Electricity Rate | 14.87¢/kWh | 43.18¢/kWh |
| Payback Period | 11.2 years | 4.8 years |
| 20-Year Savings | $28,400 | $72,400 |
Verdict
Hawaii is the better state for solar ROI with $72,400 in 20-year savings and a 4.8-year payback period. Hawaii has more sun exposure at 5.5 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 Hawaii?
Hawaii gets more sun (5.5 peak hours/day vs 4.5). Hawaii has a faster payback (4.8 years) and Hawaii offers higher 20-year savings ($72,400).
How do solar costs compare between Alabama and Hawaii?
A 6kW system costs $17,700 in Alabama vs $21,000 in Hawaii before incentives. Both qualify for the 30% federal tax credit.
Explore More
Was this data helpful?
Data verified March 2026 · Source: NREL, DSIRE, EIA