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Is plug-in solar legal in South Dakota?
What this means for you
✓ What you can do
- Apply for interconnection like any small generator (Residential <=10 kW typical), typical fee $50.
- Use portable panels with a power station, never connected to house wiring, with no permission at all.
- Install conventional rooftop or ground-mount solar through the standard interconnection process.
✕ Not yet / not allowed
- Plug a grid-tied kit into an outlet without an interconnection agreement; it can breach your service terms.
- Expect a permit or wiring exemption; none exists without a law.
- Count on a law soon: no plug-in solar bill has been filed.
What the rules say
No plug-in solar law or bill in South Dakota.
Before you plug in: South Dakota checklist
- The rule that applies is South Dakota Public Utilities Commission's interconnection process: ARSD 20:10:36 small generator interconnection.
- A plug-in kit falls in the smallest tier (Residential <=10 kW typical). $50 typical (2025 utility reports).
- Permits: 2023 NEC with SD amendments; state inspection.
- Only consider kits with a UL 1741-listed inverter (UL 3700 preferred); a non-listed inverter will not be approved anywhere.
- What exports are worth: No net metering; avoided-cost purchase.
- If approval is slow or costly, a portable panel and power station (never connected to house wiring) needs no permission.
- No plug-in solar bill has been filed yet; the nearby states that passed laws in 2026 are the template to expect.
The rules in detail
South Dakota has no statute specific to plug-in solar. Average residential electricity price: 15.37¢ per kWh (EIA, July 2026).
Your utility's rules in South Dakota
No utility in South Dakota publishes a rule that specifically allows or bans outlet-connected generation, so the general interconnection agreement is what applies. Here is what the largest residential utilities say and require.
| Utility | Residential customers | Published position on plug-in kits |
|---|---|---|
| Xcel Energy (SD) | 92,204 | No specific statement. source |
| Black Hills Power | 60,951 | No specific statement. source |
| NorthWestern Energy (SD) | 51,467 | No specific statement. |
Interconnection terms for a sub-1.2 kW system
| Regulator | South Dakota Public Utilities Commission. |
|---|---|
| Governing rule | ARSD 20:10:36 small generator interconnection. |
| Smallest tier | Residential <=10 kW typical. |
| Application fee | $50 typical (2025 utility reports). |
| Electrician / permit | 2023 NEC with SD amendments; state inspection. |
| Export compensation | No net metering; avoided-cost purchase. |
| Electrical code | 2023 NEC (eff. 11/12/2024). |
- No net metering at all.
- Half of residents on co-ops/munis outside PUC rule.
State incentives
- Property-tax exemption; no credit or sales-tax exemption.
Who is pushing for a law
- Dakota Rural Action
Savings preview: 800 W kit in South Dakota
Adjust for your setup →≈ $143/year
Frequently asked questions
Is plug-in solar legal in South Dakota?
South Dakota has no plug-in solar law. Plugging a kit into an outlet falls under your utility's interconnection rules, which usually require approval.
Do I need a permit or electrician for plug-in solar in South Dakota?
Default. Check with your local building department before you plug in.
Do I have to tell my utility in South Dakota?
Default. Plugging in a grid-tied kit without following this can breach your service agreement.
What can an 800 W plug-in kit save in South Dakota?
Roughly 928 kWh and about $143 per year at South Dakota's average residential rate of 15.37¢/kWh, assuming a typical balcony or patio mount. See the calculator for your exact setup.