South Dakota vs Vermont Solar Comparison
South Dakota gets more sun (4.6 hrs/day) while Vermont has the faster payback (8 years).Vermont offers higher 20-year savings at $38,200.
South Dakota
4.6 hrs
11.2yr payback
$26,200
20yr savings
Vermont
3.6 hrs
8yr payback
$38,200
20yr savings
Side-by-Side Comparison
| Metric | South Dakota | Vermont |
|---|---|---|
| Peak Sun Hours | 4.6 hrs | 3.6 hrs |
| Cost per Watt | $3.10 | $3.35 |
| 6kW System Cost | $18,600 | $20,100 |
| Federal Tax Credit | 30% | 30% |
| State Tax Credit | None | None |
| State Rebate | None | None |
| Net Metering | Partial Net Metering | Full Net Metering |
| Electricity Rate | 13.74¢/kWh | 21.43¢/kWh |
| Payback Period | 11.2 years | 8 years |
| 20-Year Savings | $26,200 | $38,200 |
Verdict
Vermont is the better state for solar ROI with $38,200 in 20-year savings and a 8-year payback period. South Dakota 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 South Dakota or Vermont?
South Dakota gets more sun (4.6 peak hours/day vs 3.6). Vermont has a faster payback (8 years) and Vermont offers higher 20-year savings ($38,200).
How do solar costs compare between South Dakota and Vermont?
A 6kW system costs $18,600 in South Dakota vs $20,100 in Vermont before incentives. Both qualify for the 30% federal tax credit.
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Data verified March 2026 · Source: NREL, DSIRE, EIA