Minnesota vs South Dakota Solar Incentives: Which State Gets the Better Deal?
Side-by-side comparison of Minnesota and South Dakota solar incentive programs in 2026: state tax credits, net metering rules, exemptions, payback period, and projected 25-year savings.
| Metric | MN · Minnesota | SD · South Dakota |
|---|---|---|
| Avg Monthly Bill | $125 | $115 |
| Peak Sun Hours / Day | 4.6 | 4.9 ◆ |
| Avg $/Watt Installed | $2.85 ◆ | $2.95 |
| State Tax Credit | None | None |
| Net Metering | retail | avoided-cost |
| SREC Market | No | No |
| Property Tax Exempt | Yes | Yes |
| Sales Tax Exempt | Yes | No |
| Payback, pre-credit model (yrs) | 9 ◆ | 10.7 |
| 25-yr savings, pre-credit model | $29,600 ◆ | $24,300 |
Payback and 25-year savings were modeled while the federal residential credit applied. They are not a 2026 quote. The calculator uses $0 federal credit and state incentives only.
State Tax Credit Comparison
Minnesota offers no state income tax credit. South Dakota offers no state income tax credit.
Net Metering Policies
Minnesota: retail rate net metering active. South Dakota: avoided-cost rate net metering active.
Net metering is often the most economically significant solar policy because it determines how excess production is valued. Retail-rate states (where you receive full retail price for exported energy) have substantially better solar economics than avoided-cost or no-net-metering states.
Average 25-Year Savings
Minnesota: $29,600 over 25 years (avg payback 9 yrs). South Dakota: $24,300 over 25 years (avg payback 10.7 yrs).
Verdict: Which State Wins on Solar?
Minnesota edges out South Dakota on lifetime savings primarily due to more favorable net metering rules.
Note: state averages mask significant within-state variation. Your specific utility, roof orientation, and household electricity profile drive your actual numbers — use the calculator to model your home directly.