New Hampshire vs Wisconsin Solar Comparison
Wisconsin gets more sun (3.8 hrs/day) while New Hampshire has the faster payback (7.2 years).New Hampshire offers higher 20-year savings at $44,600.
New Hampshire
3.7 hrs
7.2yr payback
$44,600
20yr savings
Wisconsin
3.8 hrs
9.5yr payback
$30,400
20yr savings
Side-by-Side Comparison
| Metric | New Hampshire | Wisconsin |
|---|---|---|
| Peak Sun Hours | 3.7 hrs | 3.8 hrs |
| Cost per Watt | $3.35 | $3.20 |
| 6kW System Cost | $20,100 | $19,200 |
| Federal Tax Credit | 30% | 30% |
| State Tax Credit | None | None |
| State Rebate | None | None |
| Net Metering | Full Net Metering | Full Net Metering |
| Electricity Rate | 25.78¢/kWh | 17.38¢/kWh |
| Payback Period | 7.2 years | 9.5 years |
| 20-Year Savings | $44,600 | $30,400 |
Verdict
New Hampshire is the better state for solar ROI with $44,600 in 20-year savings and a 7.2-year payback period. Wisconsin has more sun exposure at 3.8 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 New Hampshire or Wisconsin?
Wisconsin gets more sun (3.8 peak hours/day vs 3.7). New Hampshire has a faster payback (7.2 years) and New Hampshire offers higher 20-year savings ($44,600).
How do solar costs compare between New Hampshire and Wisconsin?
A 6kW system costs $20,100 in New Hampshire vs $19,200 in Wisconsin before incentives. Both qualify for the 30% federal tax credit.
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Data verified March 2026 · Source: NREL, DSIRE, EIA