Low electricity rates, cold winters — the South Dakota solar reality.
| ☀️ Peak Sun Hours | 4.3 hrs/day (decent — better than North Dakota) |
| ⚡ Avg Electricity Rate | $0.118/kWh (EIA 2025 — among the lowest in the U.S.) |
| 🏠 Typical 6 kW System Cost | $17,500 after 30% Federal Tax Credit (ITC) |
| 📈 Payback Period | 13–16 years (industry estimate for average SD home) |
| 🔌 Net Metering Policy | ⚠️ Varies by utility — not state-mandated |
| 💰 25-Year Total Savings | $30,000+ (estimate based on 4% annual electricity inflation) |
South Dakota has very low electricity rates and harsh winters — two factors that make solar economics challenging. Here's an honest assessment:
South Dakota's average electricity rate ($0.118/kWh) is among the lowest in the country (EIA 2025). This means each kWh of solar production saves you less money, extending payback periods to 13–16 years (with net metering) or 20+ years (without). The low rates are due to South Dakota's reliance on low-cost coal and wind generation, which keep electricity affordable for residents.
However, electricity rates are projected to rise 3–4% annually as aging coal plants are retired and replaced with more expensive generation sources. Going solar now locks in your electricity rate and protects against future rate increases. Over 25 years, even a 3% annual increase compounds to a 115% total increase — meaning the electricity that costs $100/month today could cost $215/month in 25 years.
South Dakota gets about 4.3 peak sun hours per day annually (NREL data). Summer production is decent, but winter production is very low (short days, snow cover). A 6 kW system in Sioux Falls produces about 6,900 kWh/year.
For comparison: a 6 kW system in California (5.5 peak sun hours) produces about 8,800 kWh/year, while a system in Arizona (6.5 peak sun hours) produces about 10,400 kWh/year. South Dakota's solar resource is decent but not exceptional — ranking around the middle of all U.S. states.
The seasonal variation is significant. In July, a 6 kW system in Sioux Falls produces about 1,150 kWh (enough to cover a typical household's entire electricity usage). In December, the same system produces only about 210 kWh (covering just 18% of winter electricity needs). This extreme seasonality makes net metering or battery storage essential for South Dakota solar.
South Dakota does not have a state law requiring net metering. Some utilities offer it voluntarily, but terms vary. Black Hills Energy (serving parts of SD) may offer net metering — check directly with your utility.
Without net metering, the economics of solar in South Dakota become much worse. If you can't export excess solar to the grid at retail rates, you must either (1) use the electricity directly during the day, (2) store it in a battery, or (3) let it go to waste. For most South Dakota homeowners, daytime usage is only 30–40% of total usage, meaning 60–70% of solar production would be wasted without net metering or battery storage.
If your utility does NOT offer net metering, you should strongly consider adding battery storage to your solar system. A battery allows you to store excess daytime solar production and use it in the evening and at night, increasing your solar self-consumption from 30–40% to 60–80%.
The 30% Federal ITC applies to South Dakota solar installations. For a $25,000 system, that's $7,500 — a substantial reduction in upfront cost. The tax credit can be spread across multiple tax years if you don't have enough tax liability in a single year to use it all at once (thanks to the Inflation Reduction Act's transferability provisions).
Additionally, the federal tax credit applies not just to the solar panels, but to the entire solar system, including: solar panels, inverter, racking, wiring, installation labor, permitting fees, and even battery storage if it's installed at the same time as the solar system. This makes the 30% credit especially valuable — on a $25,000 system, you get $7,500 back.
South Dakota's harsh winters and occasional severe weather make battery storage a valuable addition to solar. Even if the financial payback is long, having backup power during blizzards has real value. A typical winter blizzard can knock out power for 1–3 days in rural South Dakota areas. With a solar + battery system, you can maintain power for critical loads (heating, refrigeration, lights, internet) during outages.
The value of backup power is difficult to quantify financially, but for many South Dakota homeowners, it's the primary reason to go solar. If you've ever experienced a multi-day power outage during a South Dakota blizzard, you know how disruptive it can be. Solar + battery provides peace of mind that you'll have power when the grid goes down.
Modern batteries like the Tesla Powerall (13.5 kWh) or Enphase IQ Battery (10.5 kWh) can power essential loads for 12–24 hours, and with solar recharging during the day, can provide indefinite backup power during extended outages (as long as the solar panels aren't covered in snow).
South Dakota solar customers can claim 30% of total system cost as a federal tax credit. This is the single most important financial incentive for SD solar. The credit applies to equipment, installation, permitting, and even battery storage if installed with the solar system.
Important: The federal tax credit is non-refundable, meaning it can only reduce your tax liability to zero (it won't result in a refund beyond your tax liability). However, under the Inflation Reduction Act, you can now "carry forward" unused tax credits to future years, and you may be able to transfer the credit to a tax-exempt organization in some cases. Consult a tax professional for details.
Since South Dakota has no state net metering law, check directly with your utility (Black Hills Energy, or your local electric cooperative) for current terms. Some utilities may offer:
Black Hills Energy: As of 2026, Black Hills Energy (which serves parts of South Dakota) offers net metering for residential solar systems. Contact them directly for current terms and compensation rates.
Electric Cooperatives: Many South Dakota residents are served by rural electric cooperatives. Each co-op sets its own net metering policy. Some offer full retail net metering; others offer avoided-cost rates; others don't offer net metering at all. Always check with your specific co-op before installing solar.
South Dakota offers a property tax exemption for renewable energy systems, meaning your solar installation will not increase your property tax assessment. This is a valuable incentive, especially for higher-value homes. A typical solar installation adds $15,000–$25,000 to a home's assessed value — without this exemption, that could mean $200–$400/year in additional property taxes.
South Dakota's 4.5% state sales tax (plus local sales taxes) applies to solar equipment purchases. Unlike some states (e.g., Oregon, which has no sales tax, or states with explicit solar sales tax exemptions), South Dakota does NOT exempt solar equipment from sales tax. This adds about $800–$1,200 to the cost of a typical solar installation.
South Dakota has moderate solar installation costs compared to the national average:
After the 30% federal tax credit, a typical 6 kW system costs $14,000–$17,500 out of pocket.
Location: Sioux Falls, SD
System size: 6 kW (18 × 350W panels)
Roof direction: South-facing, 44° tilt
Electricity rate: $0.118/kWh (Black Hills Energy)
Annual production: ~6,900 kWh (NREL PVWatts estimate for Sioux Falls, SD)
| Item | Amount |
|---|---|
| Annual solar production | 6,900 kWh |
| Value at retail rate ($0.118/kWh) | $814 |
| System cost after 30% ITC | $17,500 (upfront, after tax credit) |
| Simple payback period | ~15 years |
Estimated monthly savings: ~$68 | Yearly: $814
Note: Without net metering, payback extends to 21+ years. Adding battery storage ($10,000–$15,000) extends payback further but provides backup power value during SD winters. For this Sioux Falls home, we recommend getting quotes from at least 3 installers to compare pricing and options.
South Dakota has harsh winters that affect solar production. Here's the data:
| Month | Production (kWh) | % of July Production |
|---|---|---|
| January | 250 | 22% |
| February | 380 | 33% |
| March | 710 | 62% |
| April | 950 | 83% |
| May | 1,080 | 94% |
| June | 1,120 | 97% |
| July | 1,150 | 100% |
| August | 1,080 | 94% |
| September | 900 | 78% |
| October | 620 | 54% |
| November | 320 | 28% |
| December | 210 | 18% |
Key takeaway: Winter production in SD is very low (18–22% of peak). Snow cover can persist for days or weeks. Solar in SD works best with net metering (to bank summer surplus) or with battery storage (to provide backup power during outages).
South Dakota's snowy winters raise a common question: Does snow cover block solar panels? The answer is yes — snow cover can block sunlight from reaching the solar cells. However, there are several mitigations:
Bottom line: Snow cover reduces South Dakota solar production by about 5–10% annually (compared to if panels were snow-free year-round). This is a relatively small reduction, and the winter months are already low-production months, so the impact on annual savings is modest.
South Dakota does not have a state law requiring net metering. Some utilities may offer it voluntarily — check with your specific utility (Black Hills Energy, or your local electric cooperative) for current terms. If your utility offers full retail net metering, solar payback is 13–16 years. Without net metering, payback extends to 20+ years.
Solar in SD has a long payback period (13–16 years with net metering, 21+ years without). It makes the most sense if you value backup power (with battery storage), want to hedge against future electricity rate increases, or have a new home where you can size the system to match daytime usage. The non-financial benefits — energy independence, backup power, environmental impact — may justify solar even with a longer payback period.
Battery storage is more valuable in SD than in many other states because of harsh winter weather that can cause extended outages. A battery provides backup power during blizzards and ice storms — a meaningful benefit that partially offsets the long financial payback. If your utility does NOT offer net metering, battery storage is essential to make solar economically viable (by increasing self-consumption).
A typical 6 kW solar system in South Dakota costs $16,800–$22,200 before incentives (about $2.80–$3.70 per watt). After the 30% federal tax credit, the out-of-pocket cost is $14,000–$17,500. Adding battery storage ($10,000–$15,000) increases the total cost to $24,000–$32,500 after incentives.
South-facing roofs capture the most annual sunlight in South Dakota. Southeast/southwest-facing roofs capture about 92–95% of south-facing production. East/west-facing roofs capture about 78–85%. North-facing roofs are not recommended for solar in South Dakota due to low winter sun angles and snow cover issues.
No. South Dakota offers a property tax exemption for renewable energy systems, including solar. This means your solar installation will NOT increase your property tax assessment. This is a valuable incentive — in states without this exemption, adding solar can increase property taxes by $200–$400/year.
Our solar calculator gives you a personalized estimate based on your location, electricity usage, and SD's solar conditions.
Calculate My Solar Savings →Electricity rates: U.S. Energy Information Administration (EIA), South Dakota Electricity Profile 2025.
Solar production estimates: NREL PVWatts Calculator, using Sioux Falls, SD weather data.
Net metering policies: DSIRE, South Dakota profile.
Federal tax credit: IRS Form 5695 instructions (2026 revision).
Disclaimer: These are estimates for planning purposes. Actual savings vary based on your specific home, utility, roof orientation, and installation costs. Consult a licensed solar installer for a precise quote. Net metering policies can change — always verify current terms with your utility.
The average cost of a residential solar system in South Dakota is $15,000-$25,000 before incentives (for a 6-10 kW system). After the 30% federal Investment Tax Credit (ITC), the net cost drops to roughly $10,500-$17,500. Actual costs vary based on roof complexity, panel brand, installer choice, and local permitting fees. South Dakota homeowners should get at least 3 quotes to compare pricing.
All U.S. homeowners qualify for the 30% federal Investment Tax Credit (ITC) through 2032. This credit reduces your federal taxes by 30% of your total system cost. In addition to the federal ITC, some states offer additional rebates, property tax exemptions, or sales tax exemptions on solar equipment. Check with your local utility and the Database of State Incentives for Renewables & Efficiency (DSIRE) for South Dakota-specific programs.
The typical solar payback period in South Dakota ranges from 7 to 12 years, depending on your electricity rate, system size, available incentives, and financing terms. After the payback period, your solar panels essentially produce free electricity for the remaining 15+ years of their 25-30 year lifespan. Higher electricity rates and strong sun exposure lead to faster payback periods.
Yes. According to a study by Lawrence Berkeley National Laboratory (LBNL), homes with solar systems sell for an average of $15,000-$25,000 more than comparable homes without solar. The exact premium depends on your location, system size, and age. Many states including South Dakota offer property tax exemptions for the added value from solar, so you won't pay higher taxes even though your home is worth more.
Solar works best on south-facing roofs with minimal shading, but east-west orientations can still produce 80-90% of optimal output. Key factors include: roof condition (should have 15+ years of life left), tilt angle (30-45 degrees ideal), and shading from trees or nearby buildings. A reputable installer will perform a free site assessment using satellite imagery to estimate your production potential before you commit to anything.