15 Best Solar Companies in Frankfort, IL (2025 Reviews)

We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in Frankfort based on:

  • Customer review scores
  • Service area for Frankfort, IL
  • Company policies and services offered
  • Accreditations and certifications

Average Frankfort homeowner saves $1,120/year with solar panels

By EcoWatch Local Advisors

Data Analysis: James Savino

Ranking Methodology: Karsten Neumeister

Updated January 24, 2025

Why you can trust EcoWatch

We work with a panel of solar experts to create unbiased reviews that empower you to make the right choice for your home. No other site has covered renewables as long as us, which means we have more data and insider information than other sites. Our rankings are never affected by revenue or partnerships.

Best Solar Companies in Frankfort

Finding the best solar panel installation company for your roof is a big decision, but it's one that can pay off big in Frankfort. On average, your family can save $13,000 over 20 years with solar panels. And because solar panels have a lifespan of about 25 to 30 years, the amount of money you'll save in the long run will be much higher than that overall.


In this article, we’ll help you narrow in on the best options in your area.Read on to see our picks for the best solar companies in the city, or connect with a trusted solar company near you right away by clicking the button below.

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Best Solar Financing

Blue Raven Solar

★★★★★
4.5
  • Industry-leading in-house financing
  • Competitive pricing
  • Excellent reputation
  • Doesn't offer solar batteries

Best for Leasing

Sunrun

★★★★★
4.0
  • Expansive service area
  • Many financing options
  • Some reported issues with customer service
  • Some reported issues with door-to-door sales

EcoWatch Rankings for Solar Companies in Frankfort

Best Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

SunPower by Sun N Us

  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Pros icon Free Quotes
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Consultation

Website: https://www.sunpowerbysunnus.com/
Address: 1400 E Touhy Ave Unit 255, Des Plaines, IL 60018
Phone: 8337866878
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Illinois Solar Express, LLC

  • Pros icon Prompt Service Delivery
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Permit Assistance

Website: https://illinoissolarexpress.com/
Address: 1 Mid America Plaza 3rd Floor, Oakbrook Terrace, IL 60181
Phone: 7738767676
Outstanding Local Installer
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EcoWatch Rating

5.0/5

WindSoleil Solar and Wind Energy Services

  • Pros icon Free Quotes
  • Pros icon Reliable Customer Support
  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Grid-Tied Solar System
  • Service icon Off-Grid Solar Systems
  • Service icon Battery Storage
  • Service icon Panel Installation

Website: http://www.windsoleil.com/
Address: 401 N Trumbull Ave # D, Chicago, IL 60624
Phone: 2243074057
Outstanding Local Installer
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EcoWatch Rating

5.0/5

FreeWorld Solar

  • Pros icon Informative Resources
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Skilled Repairs
  • Service icon Battery Storage
  • Service icon Permit Assistance
  • Service icon Financing Assistance
  • Service icon Consultation

Website: https://www.freeworldrenewables.com/
Address: 1212 N Ashland Ave 2nd floor, Chicago, IL 60622
Phone: 3125857761
Outstanding Local Installer
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EcoWatch Rating

5.0/5

JD Pro Electric Inc

  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Cleaning and Maintenance
  • Service icon Skilled Repairs
  • Service icon Panel Installation

Website: http://www.jdproelectric.com/
Address: 9230 Grand Ave, Franklin Park, IL 60131
Phone: 8479162052
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

ilumen Solar

  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Battery Storage
  • Service icon Skilled Repairs
  • Service icon Grid-Tied Solar System
  • Service icon Financing Assistance
  • Service icon Permit Assistance
  • Service icon Panel Installation
  • Service icon Consultation
  • Service icon Cleaning and Maintenance

Website: https://www.ilumen-solar.com/
Address: 4 N Hillview Dr C, Lake Barrington, IL 60010
Phone: 8478523370
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Reficiency Solar

  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Battery Storage
  • Service icon Skilled Repairs
  • Service icon Panel Installation
  • Service icon Consultation

Website: https://reficiency.com/
Address: 4513 Lincoln Ave # 110, Lisle, IL 60532
Phone: 6307800951
Outstanding Local Installer
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EcoWatch Rating

4.9/5

93Energy Solar

  • Pros icon Reliable Customer Support
  • Pros icon Prompt Service Delivery
  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Cleaning and Maintenance
  • Service icon Panel Installation
  • Service icon Battery Storage
  • Service icon Permit Assistance
  • Service icon Financing Assistance

Website: https://www.93energy.com/
Address: 4517 Oakton St, Skokie, IL 60076
Phone: 7737912070
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.9/5

Semper Solr

  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Consultation
  • Service icon Panel Installation

Website: https://sempersolr.com/
Address: 3701 W Algonquin Rd Suite 1020, Rolling Meadows, IL 60008
Phone: 6304549485
Outstanding Local Installer
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EcoWatch Rating

4.8/5

RxSun

  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Cleaning and Maintenance
  • Service icon Permit Assistance
  • Service icon Panel Installation
  • Service icon Financing Assistance
  • Service icon Battery Storage
  • Service icon Consultation

Website: https://rxsun.com/
Address: 2211 N Elston Ave Suite 208, Chicago, IL 60614
Phone: 8006079786
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.8/5

Certasun

  • Pros icon Clear Pricing Policy
  • Pros icon Reliable Customer Support
  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Consultation
  • Service icon Battery Storage
  • Service icon Permit Assistance
  • Service icon Financing Assistance
  • Service icon Panel Installation

Website: https://certasun.com/
Address: 1582 Barclay Blvd, Buffalo Grove, IL 60089
Phone: 3126380800
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.7/5

Ailey Solar Electric, Inc.

  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Consultation

Website: http://aileysolar.com/
Address: 1965 W Pershing Rd, Chicago, IL 60609
Phone: 7734921294
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.7/5

Kapital Electric, Inc.

  • Pros icon Clear Pricing Policy
  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Tesla Powerwall
  • Service icon Battery Storage
  • Service icon Cleaning and Maintenance
  • Service icon Permit Assistance
  • Service icon Panel Installation
  • Service icon Consultation

Website: https://www.kapitalelectric.com/
Address: 1270 Mark St, Bensenville, IL 60106
Phone: 6308332389
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.6/5

Summit Solar

  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Grid-Tied Solar System
  • Service icon Panel Installation

Website: https://www.mysummitsolar.com/illinois
Address: 2108 McDonough St, Joliet, IL 60436
Phone: 8642500026
Outstanding Local Installer
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EcoWatch Rating

4.6/5

Windfree Solar Co

  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Battery Storage
  • Service icon Consultation
  • Service icon Panel Installation

Website: https://www.windfree.us/
Address: 5022 W Foster Ave, Chicago, IL 60630
Phone: 3125886953

Methodology: How We Ranked the Best Solar Companies in Frankfort

EcoWatch's solar experts analyzed each solar company in Frankfort based on criteria such as its reputation in the industry, customer reviews, services, warranty coverage and financing. Using this solar methodology, we used the data we collected to rate and rank each company and narrow down our picks for the best solar companies in Frankfort


Below are some the criteria we examined specifically for Illinois solar companies

  • Brand reputation and certifications (20%): We take each company's Better Business Bureau (BBB) score into consideration, as well as how long the installer has been in business (at least 5 years is required, 10 preferred) and what type of solar certifications it holds.
  • Customer reviews (20%): Trust is a top priority at EcoWatch, so we take customer experience under close consideration. We scour different review sites and customer testimonials when ranking our top solar companies, checking sites such as Trustpilot and Google Reviews. We also consider any potential complaints or lawsuits filed against these companies and award or remove points accordingly.
  • Warranty (20%): A company earns a perfect score in this category if it offers 25-year warranties that cover performance, product and workmanship. The industry standard that we measure companies against is 25-year product and performance warranties, along with a 10-year workmanship warranty. We also look closely into the track record of the post-installation support each company provides in terms of honoring its contracts
  • Solar services (10%): All of the companies we review install solar panels, but we award companies higher points if they offer additional services for customers, like battery installation, energy-efficiency audits, and EV chargers.
  • Pricing and financing (10%): It's hard to get exact quotes for solar projects, but we use marketplace research to determine how each company prices its equipment and installation services. Additionally, companies that offer more help for panel financing — like in-house loans, leases, or PPAs — score higher than those that don't.
  • Availability (10%): The bigger the service area, the higher the company will score.
  • Transparency and accessibility (5%): Solar installers that offer free consultations and easy contact methods score higher in this category.
  • Environmental, social and corporate governance factors (5%): A company earns a perfect score in this category if it offers public data disclosure, addresses end-of-life (EOL) products or processes, and demonstrates a commitment to uplifting the communities that it serves.

The Cost and Benefits of Solar in Frankfort

When choosing a solar company, most homeowners or business owners care about the costs above all.The cost of solar and the savings it generates vary depending on some important factors such as:

  • Where your home is: This influences how much sunlight your roof gets, which helps determine how many panels you need.
  • Typical energy usage: The more energy your home consumes on average and the greater your current energy bills are, the more money you could save by going solar.
  • Choice of solar panels: The type of solar panels you want will affect your total cost. High-efficiency monocrystalline panels will cost more upfront but can also lead to more savings over the lifetime of your system. If space isn't a constraint for your project, you can go with a higher number of more affordable panels.
  • Incentives: One thing that can reduce the cost of your solar project is the solar investment tax credit (ITC), which is a tax credit that’s equal to a percentage of the project cost. You can also save on your energy bills, which can result in an average of $13,000 of savings over 20 years.

Though a solar panel system costs a decent chunk of money upfront, it can save you a considerable amount over the lifespan of your panels. The question of how much, though, depends on several factors, including the amount of daily direct sunlight available and your current power bills.

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Solar Incentives in Frankfort

Switching to solar power has many considerable benefits. Not only can it help preserve the Earth, but you can also save some money on your installation with various government incentives.These incentives mostly take the form of cash rebates, tax breaks and/or solar renewable energy credits. They can cut the cost you pay for going solar by 0, upwards of 50% depending on where you live. Check out our article on solar incentives to learn what incentives are available to you.

Environmental Impact of Switching to Solar in Frankfort

There are a few main reasons why many people are considering solar energy: to help their wallet and the environment.Many homeowners might be wondering how much exactly they can impact the environment by switching to solar in Frankfort, though. According to the EPA, electricity production is the second biggest source of greenhouse gas emissions and about 62% of our electricity is generated by burning fossil fuels. Using solar power can help bring down that statistic in a city like Frankfort that accounts for a sizable amount of carbon dioxide emissions each year.In fact, if you adopt solar power, you could reduce your carbon dioxide emissions by about 90 pounds each year. Since energy from the sun is plentiful and generates electricity without releasing carbon emissions, adding solar panels to your home is one easy step you can take to help the planet.

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Best Solar Financing

Blue Raven Solar

★★★★★
4.5
  • Industry-leading in-house financing
  • Competitive pricing
  • Excellent reputation
  • Doesn't offer solar batteries

Best for Leasing

Sunrun

★★★★★
4.0
  • Expansive service area
  • Many financing options
  • Some reported issues with customer service
  • Some reported issues with door-to-door sales

EcoWatch's Frankfort, IL Solar Company Rankings FAQs

Which solar company is the best in Frankfort?

In Frankfort, SunPower by Sun N Us is the top local solar company. Our team of experts rates it 3.00 stars, so it's a great choice if you're looking to add solar panels to your home.

What are a few of the major pros and cons of adopting solar power?

A few of the biggest pros are that it lowers your electricity bills, it’s eco-friendly, and it can give you a decent return on your investment (ROI). The most notable cons are that solar panels don’t produce electricity at night, the startup costs are high and solar panels can look clunky on your roof.

How long does it take for solar to pay for itself?

The average payback period for solar panel installation is about 18.8 years, but the exact period varies by local electricity costs, incentives and net metering programs.

How much solar panel capacity do I need for my house?

Solar panel capacity is how much energy the panels can generate under ideal conditions (a sunny day around noon). The average household has to install between 20 and 35 panels to cover their typical energy usage.

Our goal is to reach as many people as we can with sensible solutions like solar energy. Our team of full-time local researchers collects solar price and installation data for every city in America then compiles it to create these digestible city guides. If you want to read our solar expert’s opinion on the top solar companies featured here, follow this link.

Company research was conducted by Melissa Smith and Karsten Neumeister. Local data analysis was conducted by James Savino. See something we missed or could do better? Email the editor.