The cost of solar panels in Madison County, IL (2024)

Updated Feb 22, 2024

  • You'll pay an average of $15,065 to install a 5 kilowatt solar panel system in Madison County, IL, before incentives.

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

  • With EnergySage's competitive marketplace, you can expect to see prices up to 20% lower than if you work with a single company.

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Written by: Emily Walker

As of February 2024, the average solar panel system costs $3.01/W including installation in Madison County, IL. For a 5 kW installation, this comes out to about $15,065 before incentives, though prices range from $12,805 to $17,325. After the federal tax credit, the average price drops by 30%.

Average price of a 5 kW solar panel installation in Madison County, IL

Good Price
$12,805 or less
Market Average
$15,065
High Price
$17,325 or more

You'll probably pay even less than what we show here. It doesn't include the federal ITC or Madison County, IL 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 $15,065 in Madison County, IL, 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 Madison County, IL

System Size
System Cost
System Cost (after ITC)
3 kW$9,039$6,327
4 kW$12,052$8,436
5 kW$15,065$10,546
6 kW$18,078$12,655
7 kW$21,091$14,764
8 kW$24,104$16,873
9 kW$27,117$18,982
10 kW$30,130$21,091

Are solar panels worth it in Madison County, IL?

Solar panels are worth it in most areas, including Madison County, IL. 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 $55,489 over 20 years on electricity costs with a 5 kW system in Madison County, IL. 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
4.46 Years
20-Year Savings
$55,489
Cost-per-Watt
$3.01

If you can't shell out $15,065 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 IL, here are some popular suggestions:

  • All Energy Solar
    Multi-state
    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...
  • SunSent Solar
    Multi-state
    Elite Installer
    • Production Guarantee

    • 30 year Warranty

    • Excellent Panel Rating

    • We're a local family owned business

    • We carry b...
    Elite Installer
    Screened & Verified
    5.0 /5.0
    44 Reviews

    • Production Guarantee

    • 30 year Warranty

    • Excellent Panel Rating

    • We're a local family owned business

    • We carry b...
  • EnergyONE Renewables
    Greenville, IL
    Established 2013
    Elite Installer
    EnergyONE Renewables offers customers the ability to explore all of their solar options from the comfort of their...
    Elite Installer
    Screened & Verified
    5.0 /5.0
    20 Reviews

    EnergyONE Renewables offers customers the ability to explore all of their solar options from the comfort of their...
  • Sunshine Saves Inc.
    Joliet, IL
    Established 2012
    Elite Installer
    Our main focus is always on quality, both with equipment used and the installation performed. We offer the best w...
    Elite Installer
    Screened & Verified
    5.0 /5.0
    15 Reviews

    Our main focus is always on quality, both with equipment used and the installation performed. We offer the best w...
  • Eequals
    Edwardsville, IL
    Established 2014
    Elite Installer
    With an unmatched 60-day INSTALLATION GUARANTEE, up to a 30 Warranty, and a 25-year Manufacture PRODUCTION GUARA...
    Elite Installer
    Screened & Verified
    4.5 /5.0
    8 Reviews

    With an unmatched 60-day INSTALLATION GUARANTEE, up to a 30 Warranty, and a 25-year Manufacture PRODUCTION GUARA...

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 Madison County, IL.

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 Madison County, IL. 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.

See what solar costs in IL cities and towns

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