Solar Panel Payback Calculator for Wisconsin
Wisconsin (WI) offers moderate solar potential with an average of 3.8 peak sun hours per day. The average residential electricity rate is 16.5 cents per kWh, and solar installation costs average $3.10 per watt. Based on these figures, a typical 6 kW residential solar system in Wisconsin has an estimated payback period of 11.9 years and generates $24,432 in total savings over 25 years.
Solar System Size Comparison for Wisconsin
The table below compares four common residential solar system sizes for Wisconsin homeowners. All calculations use the state average electricity rate of 16.5 cents per kWh, average installation cost of $3.10/W, and 3.8 peak sun hours. The federal 30% Investment Tax Credit is included in all scenarios.
| System Size | Gross Cost | Federal Credit | Net Cost | Annual Output | Annual Savings | Payback | 20-Year Savings | 25-Year Savings |
|---|---|---|---|---|---|---|---|---|
| 4 kW | $12,400 | $3,720 | $8,680 | 4,438 kWh | $732 | 11.9 years | $9,997 | $16,284 |
| 6 kW | $18,600 | $5,580 | $13,020 | 6,658 kWh | $1,099 | 11.9 years | $15,000 | $24,432 |
| 8 kW | $24,800 | $7,440 | $17,360 | 8,877 kWh | $1,465 | 11.9 years | $19,999 | $32,574 |
| 10 kW | $31,000 | $9,300 | $21,700 | 11,096 kWh | $1,831 | 11.9 years | $24,998 | $40,716 |
Solar Energy in Wisconsin: What You Need to Know
Wisconsin has growing solar adoption with Focus on Energy rebates. Above-average electricity rates offset moderate sun hours. Community solar programs are expanding access.
Electricity Rates in Wisconsin
The average residential electricity rate in Wisconsin is 16.5 cents per kWh, which is above the national average of approximately 16 cents per kWh. These moderate rates provide a reasonable foundation for solar savings. Combined with the federal tax credit and any state incentives, solar remains a strong investment for most Wisconsin homeowners.
Peak Sun Hours and Solar Production
Wisconsin averages 3.8 peak sun hours per day, which is moderate but still viable for residential solar. Many successful solar installations operate across the Northeast and Midwest with similar sun hours. Modern panels are increasingly efficient even in diffuse light conditions. A 6 kW system in Wisconsin produces approximately 6,658 kWh per year, accounting for standard system efficiency losses and typical weather patterns.
Wisconsin Solar Incentives and Programs
No state tax credit. Focus on Energy provides rebates ($500-$1,000 for residential). Net metering at retail rate. Sales tax exemption on solar. No property tax exemption. We Energies and other utilities offer programs.
Incentive Summary for Wisconsin
- Federal Tax Credit: 30% ITC (available through 2032)
- State Tax Credit: None
- Net Metering: Available
- SRECs: Not available
- Avg. Installation Cost: $3.10/watt (before incentives)
How Wisconsin Compares to Similar States
Below is a comparison of Wisconsin with five states that have similar solar conditions. All calculations are based on a 6 kW residential system using each state's average electricity rate and sun hours.
| State | Sun Hours | Rate (c/kWh) | Cost/Watt | Net Cost | Payback | 25-Yr Savings |
|---|---|---|---|---|---|---|
| Wisconsin | 3.8 | 16.5c | $3.10 | $13,020 | 11.9 years | $24,432 |
| Connecticut | 3.8 | 27c | $3.20 | $13,440 | 7.5 years | $47,845 |
| Maine | 3.8 | 22c | $3.15 | $13,230 | 9.0 years | $36,706 |
| Massachusetts | 3.8 | 28c | $3.30 | $12,860 | 6.9 years | $50,695 |
| New Hampshire | 3.8 | 23c | $3.20 | $13,440 | 8.8 years | $38,766 |
| New York | 3.8 | 23c | $3.20 | $8,640 | 5.6 years | $43,566 |
Environmental Impact of Solar in Wisconsin
Installing a 6 kW solar system in Wisconsin offsets approximately 5,693 pounds of CO2 per year, which is equivalent to planting 47 trees annually. Over the 25-year lifespan of your solar system, that adds up to roughly 142,325 pounds of avoided carbon emissions. Choosing solar energy is one of the most impactful steps a homeowner can take to reduce their carbon footprint and contribute to cleaner air in Wisconsin communities.
Ready to Calculate Your Exact Savings?
Use our Solar Payback Calculator to enter your specific system size, electricity rate, and roof shading conditions for a personalized estimate. Or browse all 50 states + DC to compare solar economics across the country.