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

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

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

Average Posen homeowner saves $1,132/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 Posen

If you’re a homeowner looking to capitalize on the solar incentives in Posen, it can be hard to narrow down which installer to decide on. But, the process is worth it since switching to solar energy is often a great choice. Since the cost of energy is increasing each year, many homeowners are planning on making the switch to solar to save money on electricity for their homes.


In this article, we’ll help you narrow in on the top companies in your area.If you’re ready to start receiving free, no-obligation quotes from the top Posen solar companies, you can click the button below to learn more.

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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 Posen

Best Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

WindSoleil Solar and Wind Energy Services

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

Services Offered

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

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

EcoWatch Rating

5.0/5

FreeWorld Solar

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

Services Offered

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

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

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
ecowatch badge icon

EcoWatch Rating

5.0/5

JD Pro Electric Inc

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

Services Offered

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

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

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

EcoWatch Rating

4.9/5

Reficiency Solar

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

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

EcoWatch Rating

4.9/5

93Energy Solar

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

Services Offered

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

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 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://sempersolr.com/
Address: 3701 W Algonquin Rd Suite 1020, Rolling Meadows, IL 60008
Phone: 6304549485
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.8/5

RxSun

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

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

Services Offered

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

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

Services Offered

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

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

Windfree Solar Co

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

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

EcoWatch Rating

4.6/5

Phoenix Exteriors Roofing & Solar

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

Services Offered

  • Service icon Panel Installation
  • Service icon Skilled Repairs
  • Service icon Financing Assistance

Website: https://phoenixexteriors.com/
Address: 1066 National Pkwy, Schaumburg, IL 60173
Phone: 6309988140

Methodology: How We Ranked the Best Solar Companies in Posen

EcoWatch's solar experts analyzed each solar company in Posen 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 Posen


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 Posen

Even though solar panels can save you a good amount of money on energy bills over time, it’s important to know the startup costs.A few main factors that affect the cost of installing solar panels on your home and how much it could save you over time are:

  • Incentives: The federal solar investment tax credit, which everyone in the U.S. is eligible for, allows you to deduct 0 of the cost of your solar system installation from your federal taxes. Plus, not including incentives, you can save about $13,000 over 20 years on your energy bills.
  • System size and type: Some models are more expensive than others, so the one you get can raise or lower your initial investment. Plus, the more solar panels you need to buy, the more it'll cost.
  • Your city: This affects the average daily sunlight your roof gets, which helps determine how many panels you need.
  • How much energy you use: If your home regularly uses a lot of energy, you'll benefit more from going solar.

Solar is a worthwhile investment for most homeowners. You can generate your own electricity instead of paying for it from the grid and make use of solar incentives and rebates, all while helping protect the Earth.

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Solar Incentives in Posen

If you’re planning on switching to solar energy, various government incentives and state programs can greatly bring down the installation costs and expedite the return on your investment.There are quite a few federal, state and local rebates and tax credits that may earn you anywhere from 0 to 50% of your money in return after installing a qualifying system. Our article on solar incentives goes over more detailed information on the incentives you can find in Posen.

Environmental Impact of Switching to Solar in Posen

A lot of people want to do what they can for the planet, which in many cases is the main motivation to install a solar system.Many homeowners might be wondering how much exactly they can impact the environment by switching to solar in Posen, though. Using solar energy for electricity in place of burning fossil fuels is a good way to lower carbon dioxide emissions if you're concerned about Posen's sizable level of greenhouse gas emissions.In Posen, the average person can lower their carbon footprint by 90 pounds a year once they go solar. If you want to do your part for the environment, you’ll most likely get that there are many advantages to adopting solar power other than just saving money on electricity. You can also help preserve the environment, which some would argue is more valuable.

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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 Posen, IL Solar Company Rankings FAQs

Which solar panel installer is the best in Posen?

In Posen, WindSoleil Solar and Wind Energy Services is the most reputable local solar company. Our team of experts rates it 5.00 stars, so it's a solid choice if you're planning on installing solar panels on your roof.

What are a few of the main advantages and disadvantages of switching to solar?

A few of the biggest pros are that it reduces your electricity bills, it’s environmentally 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, they cost a lot upfront and solar panels can be an eyesore.

How long does it take to see a return on your investment after buying solar panels?

Solar panels generally pay for themselves in about 18.6 years, but your solar payback period will vary depending on your utility costs. The higher your typical electricity bill, the quicker your solar panel system will pay for itself.

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

Solar panel capacity is the amount of energy the panels can produce under ideal conditions (a sunny day around noon). The average household has to get between 20 and 35 panels to cover their energy needs.

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.