Michigan vs Washington Solar Comparison
Michigan gets more sun (3.6 hrs/day) while Michigan has the faster payback (9.5 years).Michigan offers higher 20-year savings at $30,600.
Michigan
3.6 hrs
9.5yr payback
$30,600
20yr savings
Washington
3.5 hrs
12.5yr payback
$22,800
20yr savings
Side-by-Side Comparison
| Metric | Michigan | Washington |
|---|---|---|
| Peak Sun Hours | 3.6 hrs | 3.5 hrs |
| Cost per Watt | $3.20 | $3.10 |
| 6kW System Cost | $19,200 | $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 | 19.34¢/kWh | 11.26¢/kWh |
| Payback Period | 9.5 years | 12.5 years |
| 20-Year Savings | $30,600 | $22,800 |
Verdict
Michigan is the better state for solar ROI with $30,600 in 20-year savings and a 9.5-year payback period. Michigan has more sun exposure at 3.6 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 Michigan or Washington?
Michigan gets more sun (3.6 peak hours/day vs 3.5). Michigan has a faster payback (9.5 years) and Michigan offers higher 20-year savings ($30,600).
How do solar costs compare between Michigan and Washington?
A 6kW system costs $19,200 in Michigan 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