The cost of solar panels in Mount Prospect, IL (2024)

Updated Feb 22, 2024

  • You'll pay an average of $16,047 to install a 5 kilowatt solar panel system in Mount Prospect, 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.

Don't overpay for solar

Compare multiple offers and save up to 20%

Please enter a five-digit zip code.

Written by: Emily Walker

As of February 2024, the average solar panel system costs $3.21/W including installation in Mount Prospect, IL. For a 5 kW installation, this comes out to about $16,047 before incentives, though prices range from $13,640 to $18,454. After the federal tax credit, the average price drops by 30%.

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

Good Price
$13,640 or less
Market Average
$16,047
High Price
$18,454 or more

You'll probably pay even less than what we show here. It doesn't include the federal ITC or Mount Prospect, 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 $16,047 in Mount Prospect, 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 Mount Prospect, IL

System Size
System Cost
System Cost (after ITC)
3 kW$9,628$6,740
4 kW$12,837$8,986
5 kW$16,047$11,233
6 kW$19,256$13,479
7 kW$22,465$15,726
8 kW$25,674$17,972
9 kW$28,884$20,219
10 kW$32,093$22,465

Are solar panels worth it in Mount Prospect, IL?

Solar panels are worth it in most areas, including Mount Prospect, 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 $40,642 over 20 years on electricity costs with a 5 kW system in Mount Prospect, 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
4.19 Years
20-Year Savings
$40,642
Cost-per-Watt
$3.21

If you can't shell out $16,047 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
Please enter a five-digit zip code.
  • 100% free to use, 100% online
  • Access the lowest prices from installers near you
  • Unbiased Energy Advisors ready to help

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...
  • RxSun
    Wilmette, IL
    Elite Installer
    RxSun is your prescription for an affordable, clean energy future!

    We're a down-to-earth crew of electricians and ...
    Elite Installer
    Screened & Verified
    5.0 /5.0
    37 Reviews

    RxSun is your prescription for an affordable, clean energy future!

    We're a down-to-earth crew of electricians and ...
  • SunPower
    Multi-state
    Established 1985
    Elite Installer
    SunPower is the number one rated solar company, and with over 37 years of dedicated solar experience, we're the o...
    Elite Installer
    Screened & Verified

    SunPower is the number one rated solar company, and with over 37 years of dedicated solar experience, we're the o...
  • Greenlink Energy Solutions
    Rockford, IL
    Advanced Installer
    Greenlink's pitch is simple: we will give you honest and practical answers, with the highest quality outcome for ...
    Advanced Installer
    Screened & Verified
    5.0 /5.0
    6 Reviews

    Greenlink's pitch is simple: we will give you honest and practical answers, with the highest quality outcome for ...
  • Ailey Solar
    Chicago, IL
    Established 2007
    Advanced Installer
    Ailey Solar, established in 2007, stands as the foremost choice for residential and commercial solar installation...
    Advanced Installer
    Screened & Verified
    5.0 /5.0
    19 Reviews

    Ailey Solar, established in 2007, stands as the foremost choice for residential and commercial solar installation...

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 Mount Prospect, 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 Mount Prospect, 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

Consumer reviews of EnergySage

Back to the top
Did you find this page helpful?
Discover whole-home electrification
Home solar
House with rooftop solar panels

Create your own clean energy with solar panels.

Community solar
Solar farm

Enjoy the benefits of solar without rooftop panels.

Heating & cooling
Heat pump

Explore heat pumps, the latest in clean heating & cooling technology.