Solar Panel Cost in Watertown, SD
Updated 2026 guide to solar panel prices, savings, and payback period in Watertown.
Estimated Solar Savings
Solar Panel System Costs in Watertown, SD
Below are estimated costs for different solar panel system sizes in Watertown, including the 30% federal solar tax credit.
| System Size | Cost Before Incentives | Federal Tax Credit (30%) | Net Cost | Est. Annual Production |
|---|---|---|---|---|
| 4 kW | $11,600 | -$3,480 | $8,120 | 6,570 kWh |
| 6 kWMost Popular | $17,400 | -$5,220 | $12,180 | 9,855 kWh |
| 8 kW | $23,200 | -$6,960 | $16,240 | 13,140 kWh |
| 10 kW | $29,000 | -$8,700 | $20,300 | 16,425 kWh |
| 12 kW | $34,800 | -$10,440 | $24,360 | 19,710 kWh |
What Affects Solar Panel Cost in Watertown?
The average cost of solar panels in Watertown, SD is approximately $290/watt before incentives. For a typical 6kW residential system, that means a total cost of about $17,400 before the federal tax credit.
After applying the 30% federal Investment Tax Credit (ITC), your net cost drops to approximately $12,180.Watertown homeowners typically see a payback period of 10 years and save an estimated $24,000 over 25 years.
Factors that affect your cost in Watertown:
- System size: Larger systems cost more but have a lower cost per watt
- Equipment quality: Premium panels and inverters cost more but offer better efficiency
- Roof complexity: Steep roofs, multiple levels, or shading can increase installation costs
- Local labor rates: Installation costs vary within the Watertown metro area
- Local permits: Permitting costs and requirements vary by municipality in Watertown
- Incentives: State and local programs can significantly reduce your out-of-pocket cost
Solar Incentives Available in Watertown
Federal Solar Investment Tax Credit
30% Federal Tax Credit (ITC)
South Dakota homeowners can claim the 30% federal ITC. With no state income tax, the federal credit is the primary tax incentive.
State & Local Incentives
Property Tax Exemption
Property TaxSouth Dakota provides a property tax assessment freeze for renewable energy systems installed on residential property.
Net Metering
South Dakota requires utilities to offer net metering for residential solar systems. Credits are provided for excess generation sent to the grid.
AvailableSRECs
South Dakota does not have an SREC market or a renewable portfolio standard. The state has voluntary renewable energy goals.
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Top Solar Companies in Watertown, SD
GenPro Energy Solutions
Cleaner Greener Energies, Inc.
Solar Panel Cost FAQ - Watertown, SD
The average cost of solar panels in Watertown is approximately $2.90 per watt before incentives. A typical 6kW residential system costs about $17,400 before the 30% federal tax credit, bringing the net cost to around $12,180.
The typical payback period for solar panels in Watertown is approximately 10 years. After that, you'll enjoy free electricity for the remaining 15-20+ years of your system's life, saving an estimated $24,000 over 25 years.
Watertown homeowners can take advantage of the 30% federal solar tax credit, which reduces your system cost by 30%. South Dakota also offers net metering, and various state-level incentive programs. Check our incentives page for the complete list.
Watertown homeowners can save an estimated $24,000 over 25 years by going solar. Actual savings depend on your electricity usage, system size, roof orientation, and available incentives. With electricity rates averaging $0.12/kWh in South Dakota, solar provides significant long-term savings.
Solar Costs in Other South Dakota Cities
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