Minnesota vs Washington Solar Comparison
Minnesota gets more sun (4.0 hrs/day) while Minnesota has the faster payback (10 years).Minnesota offers higher 20-year savings at $28,800.
Minnesota
4.0 hrs
10yr payback
$28,800
20yr savings
Washington
3.5 hrs
12.5yr payback
$22,800
20yr savings
Side-by-Side Comparison
| Metric | Minnesota | Washington |
|---|---|---|
| Peak Sun Hours | 4.0 hrs | 3.5 hrs |
| Cost per Watt | $3.15 | $3.10 |
| 6kW System Cost | $18,900 | $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 | 15.63¢/kWh | 11.26¢/kWh |
| Payback Period | 10 years | 12.5 years |
| 20-Year Savings | $28,800 | $22,800 |
Verdict
Minnesota is the better state for solar ROI with $28,800 in 20-year savings and a 10-year payback period. Minnesota has more sun exposure at 4.0 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 Minnesota or Washington?
Minnesota gets more sun (4 peak hours/day vs 3.5). Minnesota has a faster payback (10 years) and Minnesota offers higher 20-year savings ($28,800).
How do solar costs compare between Minnesota and Washington?
A 6kW system costs $18,900 in Minnesota 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