Solar panels in Wisconsin: cost, payback and the rules that matter
Wisconsin homes pay 19.0¢ per kWh for electricity, the 17th highest of 51, up 5.4% in a year. A typical home needs 15 panels. With no federal tax credit they pay for themselves in about 12.2 yrs.
Four facts that decide solar in Wisconsin
1. The sun. One kilowatt of panels makes about 1,315 kWh a year in the median Wisconsin city, from 1,259 in Racine to 1,349 in La Crosse.
2. The price of electricity. Every kWh your panels make is worth what you would otherwise pay: 19.0¢ in Wisconsin today.
3. What your utility pays for exports. Most Wisconsin utilities still credit exported solar close to the retail rate, but rules differ by utility and change often.
4. Incentives. The 30% federal Residential Clean Energy Credit (IRC §25D) ended for systems whose installation is completed after December 31, 2025 (One Big Beautiful Bill Act, P.L. We don't know of a statewide income-tax credit for home solar in Wisconsin.
Wisconsin's homes
2,479,480 households; 67.8% own their home. 1,557,961 owner-occupied single-family houses: the main market for rooftop solar. The median home was built in 1975; 17.8% heat with electricity.
ACS 2020–2024 5-year estimates, U.S. Census Bureau.
Plan a specific Wisconsin home
Solar in every Wisconsin city with 50,000+ people
| City | Sun hrs/day | kWh per kW | Best tilt | Typical kW | Payback (NM) | Payback (NB) | Solar ¢/kWh |
|---|---|---|---|---|---|---|---|
| Milwaukee | 4.3 | 1,276 | 36° | 6.3 | 12.4 yrs | 20.4 yrs | 12.3 |
| Madison | 4.6 | 1,331 | 39° | 6.3 | 12.0 yrs | 19.9 yrs | 11.8 |
| Green Bay | 4.4 | 1,288 | 38° | 6.3 | 12.3 yrs | 20.3 yrs | 12.2 |
| Kenosha | 4.3 | 1,263 | 36° | 6.3 | 12.5 yrs | 20.4 yrs | 12.4 |
| Racine | 4.3 | 1,259 | 36° | 6.3 | 12.5 yrs | 20.5 yrs | 12.4 |
| Appleton | 4.5 | 1,315 | 39° | 6.3 | 12.1 yrs | 20.1 yrs | 12.0 |
| Eau Claire | 4.6 | 1,342 | 41° | 6.3 | 11.9 yrs | 19.9 yrs | 11.8 |
| Waukesha | 4.4 | 1,296 | 37° | 6.3 | 12.2 yrs | 20.2 yrs | 12.1 |
| Oshkosh | 4.5 | 1,321 | 39° | 6.3 | 12.0 yrs | 20.0 yrs | 11.9 |
| Janesville | 4.6 | 1,326 | 38° | 6.3 | 12.0 yrs | 19.9 yrs | 11.9 |
| West Allis | 4.4 | 1,280 | 37° | 6.3 | 12.3 yrs | 20.3 yrs | 12.2 |
| La Crosse | 4.6 | 1,349 | 40° | 6.3 | 11.8 yrs | 19.8 yrs | 11.7 |
NM = exports credited at retail (net metering); NB = exports at ~30% of retail (net billing). Systems sized to the Wisconsin average home. $3.00/W, cash, 25 years.
Rule changes that affect Wisconsin
All changes and deadlines →- Federal: In-service deadline for the lease/PPA solar credit · Tax credits
- Federal: National data: solar prices fell to a median $3.60 per watt · Prices
- Federal: Construction-start deadline passed for the lease/PPA credit · Tax credits
- Federal: The 30% homeowner solar tax credit is gone · Tax credits
Questions about solar in Wisconsin
How much do solar panels cost in Wisconsin?
A 6.3 kW system, the size the average Wisconsin home needs, costs about $15,750 to $23,625 before incentives in 2026.
Is solar worth it in Wisconsin?
In the median Wisconsin city, solar pays for itself in about 12.2 yrs if exported power earns the retail rate, or 20.2 yrs if it earns about 30% of retail. Most utilities here still offer some form of net metering; check yours.
Is there a solar tax credit in Wisconsin?
We know of no statewide income-tax credit for home solar in Wisconsin; utilities and cities sometimes offer rebates. The 30% federal credit ended for homeowner systems installed after December 31, 2025.
How many solar panels does a Wisconsin home need?
About 15 panels of 420 watts for the state-average 645 kWh a month. Sunnier cities need fewer: La Crosse gets 1,349 kWh per kW a year, Racine 1,259.