The cost of solar panels in Sun Prairie, WI (2024)

Updated Jun 4, 2024

  • You'll pay an average of $15,560 to install a 5 kilowatt solar panel system in Sun Prairie, WI, before incentives.

  • The federal investment tax credit (ITC) lowers that price by 30% of all your solar equipment and installation costs.

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Written by: Emily Walker

As of June 2024, the average solar panel system costs $3.11/W including installation in Sun Prairie, WI. For a 5 kW installation, this comes out to about $15,560 before incentives, though prices range from $13,226 to $17,894. After the federal tax credit, the average price drops by 30%.

Average price of a 5 kW solar panel installation in Sun Prairie, WI

Good Price
$13,226 or less
Market Average
$15,560
High Price
$17,894 or more

You'll probably pay even less than what we show here. It doesn't include the federal ITC or Sun Prairie, WI state incentives, which will lower this price by at least a few thousand dollars.

Your solar panel cost depends on your system's size

It may seem obvious but larger solar panel systems cost more money. We use cost per watt ($/W) so you can easily compare quotes, controlling for slight variations in system size.

While a 5 kW system will only cost you $15,560 in Sun Prairie, WI, doubling the system size effectively doubles the price, so you'll pay about twice that for a 10 kW system. The higher the price tag, though, the more you'll get back as a credit towards your federal tax bill.

Average solar cost by system size in Sun Prairie, WI

System Size
System Cost
System Cost (after ITC)
3 kW$9,336$6,535
4 kW$12,448$8,714
5 kW$15,560$10,892
6 kW$18,672$13,070
7 kW$21,784$15,249
8 kW$24,896$17,427
9 kW$28,008$19,606
10 kW$31,120$21,784

Are solar panels worth it in Sun Prairie, WI?

Solar panels are worth it in most areas, including Sun Prairie, WI. Certain factors, including the cost of electricity, incentives, climate, and the angle at which the sun hits your roof impact how quickly you break even on your investment relative to other areas around the U.S. 

If you pay for your system with cash, you'll save about $18,506 over 20 years on electricity costs with a 5 kW system in Sun Prairie, WI. We generate this estimate based on real solar quote data from our Marketplace. It considers your system's cost, the federal tax credit, and inflation rates.

Payback Period
10.16 Years
20-Year Savings
$18,506
Cost-per-Watt
$3.11

If you can't shell out $15,560 in cash to pay for solar, don't sweat it. You can choose to finance your system with a loan instead. Some companies even offer $0-down loans so you can start saving on day one if your loan payments are less than your current electric bills. Just keep in mind that your long-term savings will be lower with a loan due to interest rates.

Find out what solar panels cost in your area in 2024
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The numbers we're showing are averages. The price you'll pay for solar depends on many factors unique to you and your home:

If you're looking for solar companies in WI, here are some popular suggestions:

  • All Energy Solar
    Madison, WI
    Established 2009
    Elite+ Installer
    All Energy Solar is a trusted leader in the solar energy industry in Iowa, Massachusetts, Minnesota, New Hampshir...
    Elite+ Installer
    Screened & Verified

    All Energy Solar is a trusted leader in the solar energy industry in Iowa, Massachusetts, Minnesota, New Hampshir...
  • Home Team Energy
    Brookfield, WI
    Established 2019
    Elite Installer
    Based in Brookfield, WI - we specialize in residential roof mounted solar installations. We make going solar simp...
    Elite Installer
    Screened & Verified
    5.0 /5.0
    18 Reviews

    Based in Brookfield, WI - we specialize in residential roof mounted solar installations. We make going solar simp...
  • Eagle Point Solar
    Multi-state
    Established 2010
    Elite Installer
    Serving Iowa, Illinois, and Wisconsin
    Proven results in Residential, Agricultural, Commercial, Academic, Municipal...
    Elite Installer
    Screened & Verified
    5.0 /5.0
    4 Reviews

    Serving Iowa, Illinois, and Wisconsin
    Proven results in Residential, Agricultural, Commercial, Academic, Municipal...
  • Wolf River Electric
    Westfield, WI
    Established 2014
    Elite Installer
    Here at Wolf River Electric customer service and satisfaction is our number one priority because with out you we ...
    Elite Installer
    Screened & Verified
    4.5 /5.0
    99 Reviews

    Here at Wolf River Electric customer service and satisfaction is our number one priority because with out you we ...
  • Windfree Solar
    Racine, WI
    Established 2009
    Elite Installer
    Windfree Solar is the answer if you are looking for solar expertise and individual care. We are the company that ...
    Elite Installer
    Screened & Verified
    4.5 /5.0
    28 Reviews

    Windfree Solar is the answer if you are looking for solar expertise and individual care. We are the company that ...

Solar is a major purchase, but you can get the price tag to come down a bit by being an educated shopper. Taking advantage of incentives and rebates and shopping around for quotes can bring down your cost of solar in Sun Prairie, WI.

Take advantage of federal and local solar incentives

As long as your federal tax bill is high enough, you can take advantage of the federal tax credit in Sun Prairie, WI. This incentive allows you to apply 30% of your solar installation and equipment costs toward your federal tax bill. If the amount exceeds your tax bill, you can roll over the remaining credit to the following year. Many states also offer great local incentives and rebates.

Get quotes from multiple installers

Comparing multiple solar quotes can save you money through competition and transparency. Each additional quote you receive for solar will help you find the right solar panel system at the right price.

This is where EnergySage can help. With funding from the Department of Energy’s SunShot Prize, EnergySage opened the country’s first (and now the largest) marketplace for home solar panel installations. We gather custom solar quotes from local installers on your behalf and put them in an easy-to-compare format. When you compare quotes for solar panels on the EnergySage Marketplace, you can expect to see prices up to 20% lower than if you work with a single solar company.

Why shop with EnergySage?

Save time & money

Request free quotes from vetted installers in minutes

Unbiased support

Our expert Energy Advisors will help you make the right decision

Trusted, local installers

We pre-screen and monitor all of our partners

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