Solar Panel Cost in Janesville, WI
Updated 2026 guide to solar panel prices, savings, and payback period in Janesville.
Estimated Solar Savings
Solar Panel System Costs in Janesville, WI
Below are estimated costs for different solar panel system sizes in Janesville, including the 30% federal solar tax credit.
| System Size | Cost Before Incentives | Federal Tax Credit (30%) | Net Cost | Est. Annual Production |
|---|---|---|---|---|
| 4 kW | $12,000 | -$3,600 | $8,400 | 5,402 kWh |
| 6 kWMost Popular | $18,000 | -$5,400 | $12,600 | 8,103 kWh |
| 8 kW | $24,000 | -$7,200 | $16,800 | 10,804 kWh |
| 10 kW | $30,000 | -$9,000 | $21,000 | 13,505 kWh |
| 12 kW | $36,000 | -$10,800 | $25,200 | 16,206 kWh |
What Affects Solar Panel Cost in Janesville?
The average cost of solar panels in Janesville, WI is approximately $300/watt before incentives. For a typical 6kW residential system, that means a total cost of about $18,000 before the federal tax credit.
After applying the 30% federal Investment Tax Credit (ITC), your net cost drops to approximately $12,600.Janesville homeowners typically see a payback period of 9 years and save an estimated $27,000 over 25 years.
Factors that affect your cost in Janesville:
- 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 Janesville metro area
- Local permits: Permitting costs and requirements vary by municipality in Janesville
- Incentives: State and local programs can significantly reduce your out-of-pocket cost
Solar Incentives Available in Janesville
Federal Solar Investment Tax Credit
30% Federal Tax Credit (ITC)
Wisconsin homeowners can claim the 30% federal ITC along with state rebate programs for solar installations.
State & Local Incentives
Focus on Energy Solar Rebate
RebateWisconsin's Focus on Energy program provides rebates for residential solar installations.
Property Tax Exemption
Property TaxWisconsin exempts solar energy systems from property tax assessments.
Sales Tax Exemption
Sales TaxSolar energy systems are exempt from Wisconsin's sales and use tax.
Net Metering
Wisconsin requires utilities to offer net metering for residential solar systems up to 20 kW. We Energies and other utilities provide credits for excess generation.
AvailableSRECs
Wisconsin does not have an SREC market. The state's Renewable Portfolio Standard does not include a specific solar carve-out.
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Solar Panel Cost FAQ - Janesville, WI
The average cost of solar panels in Janesville is approximately $3.00 per watt before incentives. A typical 6kW residential system costs about $18,000 before the 30% federal tax credit, bringing the net cost to around $12,600.
The typical payback period for solar panels in Janesville is approximately 9 years. After that, you'll enjoy free electricity for the remaining 15-20+ years of your system's life, saving an estimated $27,000 over 25 years.
Janesville homeowners can take advantage of the 30% federal solar tax credit, which reduces your system cost by 30%. Wisconsin also offers net metering, and various state-level incentive programs. Check our incentives page for the complete list.
Janesville homeowners can save an estimated $27,000 over 25 years by going solar. Actual savings depend on your electricity usage, system size, roof orientation, and available incentives. With electricity rates averaging $0.15/kWh in Wisconsin, solar provides significant long-term savings.
Solar Costs in Other Wisconsin Cities
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