South Dakota vs North Dakota Solar Incentives: Which State Gets the Better Deal?
Side-by-side comparison of South Dakota and North Dakota solar incentive programs in 2026: state tax credits, net metering rules, exemptions, payback period, and projected 25-year savings.
| Metric | SD · South Dakota | ND · North Dakota |
|---|---|---|
| Avg Monthly Bill | $115 | $115 |
| Peak Sun Hours / Day | 4.9 ◆ | 4.8 |
| Avg $/Watt Installed | $2.95 | $2.95 |
| State Tax Credit | None | None |
| Net Metering | avoided-cost | avoided-cost |
| SREC Market | No | No |
| Property Tax Exempt | Yes | Yes |
| Sales Tax Exempt | No | No |
| Payback, pre-credit model (yrs) | 10.7 ◆ | 11.1 |
| 25-yr savings, pre-credit model | $24,300 ◆ | $22,600 |
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
South Dakota offers no state income tax credit. North Dakota offers no state income tax credit.
Net Metering Policies
South Dakota: avoided-cost rate net metering active. North 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
South Dakota: $24,300 over 25 years (avg payback 10.7 yrs). North Dakota: $22,600 over 25 years (avg payback 11.1 yrs).
Verdict: Which State Wins on Solar?
South Dakota edges out North Dakota on lifetime savings primarily due to higher solar irradiance.
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.