The cost of solar panels in Marion, IL (2024)

Updated May 2, 2024

  • You'll pay an average of $15,608 to install a 5 kilowatt solar panel system in Marion, IL, 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 May 2024, the average solar panel system costs $3.12/W including installation in Marion, IL. For a 5 kW installation, this comes out to about $15,608 before incentives, though prices range from $13,267 to $17,949. After the federal tax credit, the average price drops by 30%.

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

Good Price
$13,267 or less
Market Average
$15,608
High Price
$17,949 or more

You'll probably pay even less than what we show here. It doesn't include the federal ITC or Marion, 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 $15,608 in Marion, 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 Marion, IL

System Size
System Cost
System Cost (after ITC)
3 kW$9,365$6,556
4 kW$12,487$8,741
5 kW$15,608$10,926
6 kW$18,730$13,111
7 kW$21,852$15,296
8 kW$24,973$17,481
9 kW$28,095$19,666
10 kW$31,217$21,852

Are solar panels worth it in Marion, IL?

Solar panels are worth it in most areas, including Marion, 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 $50,092 over 20 years on electricity costs with a 5 kW system in Marion, 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
4.35 Years
20-Year Savings
$50,092
Cost-per-Watt
$3.12

If you can't shell out $15,608 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:

  • SunSent Solar
    Multi-state
    Established 2016
    Elite Installer
    Switch to sunshine with SunSent Solar:

    - Guaranteed Production: We promise your system will produce what we predic...
    Elite Installer
    Screened & Verified
    5.0 /5.0
    45 Reviews

    Switch to sunshine with SunSent Solar:

    - Guaranteed Production: We promise your system will produce what we predic...
  • Windfree Solar
    Chicago, IL
    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 ...
  • EnergyONE Renewables
    Greenville, IL
    Established 2013
    Advanced Installer
    EnergyONE Renewables offers customers the ability to explore all of their solar options from the comfort of their...
    Advanced 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...
  • AES Solar
    Carterville, IL
    Established 1999
    Approved Installer
    Not all solar is created equal....Get the AES Advantage!
    We work hard to get you the right system for your unique ...
    Approved Installer
    Screened & Verified
    5.0 /5.0
    8 Reviews

    Not all solar is created equal....Get the AES Advantage!
    We work hard to get you the right system for your unique ...
  • Titan Solar Power
    Multi-state
    Established 1986
    Approved Installer
    Titan Solar Power has been named by Solar Power World as the largest Residential Solar Installer in the nation fo...
    Approved Installer
    Screened & Verified
    4.0 /5.0
    85 Reviews

    Titan Solar Power has been named by Solar Power World as the largest Residential Solar Installer in the nation fo...

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 Marion, 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 Marion, 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.

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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