Florida vs Illinois Solar Comparison
Florida gets more sun (5.4 hrs/day) while Florida has the faster payback (8.5 years).Florida offers higher 20-year savings at $38,600.
Florida
5.4 hrs
8.5yr payback
$38,600
20yr savings
Illinois
4.0 hrs
9yr payback
$32,600
20yr savings
Side-by-Side Comparison
| Metric | Florida | Illinois |
|---|---|---|
| Peak Sun Hours | 5.4 hrs | 4.0 hrs |
| Cost per Watt | $2.75 | $3.15 |
| 6kW System Cost | $16,500 | $18,900 |
| Federal Tax Credit | 30% | 30% |
| State Tax Credit | None | None |
| State Rebate | None | None |
| Net Metering | Full Net Metering | Full Net Metering |
| Electricity Rate | 16.22¢/kWh | 16.27¢/kWh |
| Payback Period | 8.5 years | 9 years |
| 20-Year Savings | $38,600 | $32,600 |
Verdict
Florida is the better state for solar ROI with $38,600 in 20-year savings and a 8.5-year payback period. Florida has more sun exposure at 5.4 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 Florida or Illinois?
Florida gets more sun (5.4 peak hours/day vs 4). Florida has a faster payback (8.5 years) and Florida offers higher 20-year savings ($38,600).
How do solar costs compare between Florida and Illinois?
A 6kW system costs $16,500 in Florida vs $18,900 in Illinois before incentives. Both qualify for the 30% federal tax credit.
Explore More
Was this data helpful?
Data verified March 2026 · Source: NREL, DSIRE, EIA