Arkansas vs Washington Solar Comparison
Arkansas gets more sun (4.6 hrs/day) while Arkansas has the faster payback (11.5 years).Arkansas offers higher 20-year savings at $25,600.
Arkansas
4.6 hrs
11.5yr payback
$25,600
20yr savings
Washington
3.5 hrs
12.5yr payback
$22,800
20yr savings
Side-by-Side Comparison
| Metric | Arkansas | Washington |
|---|---|---|
| Peak Sun Hours | 4.6 hrs | 3.5 hrs |
| Cost per Watt | $3.10 | $3.10 |
| 6kW System Cost | $18,600 | $18,600 |
| Federal Tax Credit | 30% | 30% |
| State Tax Credit | None | None |
| State Rebate | None | None |
| Net Metering | Full Net Metering | Full Net Metering |
| Electricity Rate | 13.04¢/kWh | 11.26¢/kWh |
| Payback Period | 11.5 years | 12.5 years |
| 20-Year Savings | $25,600 | $22,800 |
Verdict
Arkansas is the better state for solar ROI with $25,600 in 20-year savings and a 11.5-year payback period. Arkansas has more sun exposure at 4.6 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 Arkansas or Washington?
Arkansas gets more sun (4.6 peak hours/day vs 3.5). Arkansas has a faster payback (11.5 years) and Arkansas offers higher 20-year savings ($25,600).
How do solar costs compare between Arkansas and Washington?
A 6kW system costs $18,600 in Arkansas vs $18,600 in Washington before incentives. Both qualify for the 30% federal tax credit.
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Data verified March 2026 · Source: NREL, DSIRE, EIA