15 Best Solar Companies in Marengo, IL (2025 Reviews)
We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in Marengo based on:
Customer review scores
Service area for Marengo, IL
Company policies and services offered
Accreditations and certifications
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Average Marengo homeowner saves $1,109/year with solar panels
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Best Solar Companies in Marengo
Choosing the best solar panel installation company for your house is a huge decision, but it's one that can pay off big in Marengo. With an average energy bill of $1,156 per month in Marengo, making the switch to solar power can lower your monthly bills by about that much.
In this article, we’ll tell you about the top Marengo solar installers so you can make the best choice for your home’s renewable energy needs.We suggest shopping around to get quite a few quotes and comparing them to figure out which is the best installer for your home. To get started with free, no-obligation quotes from the top solar installers in Marengo, click the link below.
EcoWatch Rankings for Solar Companies in Marengo

Greenlink Energy Solutions
Clear Pricing Policy
Informative Resources
Free Quotes
Reliable Customer Support
Prompt Service Delivery
Limited information available on website
Services Offered
Battery Storage
Cleaning and Maintenance
System Decommissioning
Financing Assistance
Permit Assistance
Panel Installation

ilumen Solar
Free Quotes
Clear Pricing Policy
Informative Resources
Reliable Customer Support
Limited information available on website
Services Offered
Panel Installation
Permit Assistance
Skilled Repairs
Grid-Tied Solar System
Cleaning and Maintenance
Consultation
Financing Assistance
Battery Storage




WindSoleil Solar and Wind Energy Services
Reliable Customer Support
Informative Resources
Free Quotes
Clear Pricing Policy
Limited information available on website
Services Offered
Off-Grid Solar Systems
Panel Installation
Battery Storage
Grid-Tied Solar System

FreeWorld Solar
Free Quotes
Informative Resources
Limited information available on website
Services Offered
Permit Assistance
Consultation
Skilled Repairs
Panel Installation
Financing Assistance
Battery Storage


Reficiency Solar
Reliable Customer Support
Informative Resources
Clear Pricing Policy
Limited information available on website
Services Offered
Panel Installation
Battery Storage
Consultation
Skilled Repairs

93Energy Solar
Reliable Customer Support
Free Quotes
Clear Pricing Policy
Prompt Service Delivery
Informative Resources
Limited information available on website
Services Offered
Cleaning and Maintenance
Panel Installation
Battery Storage
Permit Assistance
Financing Assistance

Certasun
Free Quotes
Clear Pricing Policy
Informative Resources
Reliable Customer Support
Limited information available on website
Services Offered
Financing Assistance
Panel Installation
Battery Storage
Permit Assistance
Consultation

RxSun
Informative Resources
Clear Pricing Policy
Free Quotes
Reliable Customer Support
Limited information available on website
Services Offered
Permit Assistance
Battery Storage
Panel Installation
Financing Assistance
Cleaning and Maintenance
Consultation

Kapital Electric, Inc.
Clear Pricing Policy
Reliable Customer Support
Informative Resources
Free Quotes
Limited information available on website
Services Offered
Panel Installation
Cleaning and Maintenance
Tesla Powerwall
Consultation
Permit Assistance
Battery Storage


Methodology: How We Ranked the Best Solar Companies in Marengo
EcoWatch's solar experts analyzed each solar company in Marengo 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 Marengo
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 Marengo
Solar panels are powered by a free energy source — the sun — but before you can take advantage of this you must first pay to install your system.Some key things that affect the upfront cost and potential savings over time include:
- Your income and budget: This guides what type of solar panels you can afford.
- Electricity consumption: The average home in Marengo uses a decent amount of, and consequently may save on their energy bills.
- Your home's orientation toward the sun: This, and how your roof is set up, affects affect how much electricity your solar panels can make.
- Incentives: Tax-paying citizens who install a solar system this year can save 0 of their total solar spend by taking advantage of the federal solar investment tax credit. You can also save about $13,000 on your energy bills over 20 years not including incentives.
There are many good benefits of solar in spite of the upfront cost of installation. It can help the environment and your finances. Additionally, it can increase the value of your home, leading to even more benefits if you want to sell your home later.
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If you're interested in finding out how much you could impact the environment if you switch to solar, you can use the calculator below. You can also view our solar panel cost guide for Marengo, IL.
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Solar Incentives in Marengo
There are many reasons why you should switch to solar. One of them consists of some government incentives that can help save you some money.There are several federal, state and local rebates and tax credits that earn a decent amount of money back after paying for a qualifying system. You can learn about the incentives available to you in our article on solar incentives
Environmental Impact of Switching to Solar in Marengo
An important reason so many are thinking of adopting solar energy is to help lower their environmental impact.But you may be curious – how much exactly can you help the environment by making the switch to solar? The amount of energy you use is a key factor to keep in mind. The more energy your home uses, the bigger your impact when you go solar.Since solar panels don’t release greenhouse gas emissions into the atmosphere when creating electricity, they’re a good swap for traditional energy sources. In fact, you could lower your carbon dioxide emissions by about 90 pounds each year. The benefits of solar power are abundant — just like solar power is! That's why so many people have been happy with making the switch to solar.
EcoWatch's Marengo, IL Solar Company Rankings FAQs
What is the best solar panel company in Marengo?
In Marengo, Greenlink Energy Solutions is the most reputable local solar company. Our team of experts rates it 5.00 stars, so it's a good choice if you're looking to add solar panels to your home.
Are solar panels really eco-friendly?
Making solar panels needs to use chemicals and produces toxic waste that can be bad for the environment, which is the main negative thing about solar panels.
Is it worth installing solar panels on my house?
Solar panels call for a significant upfront investment that usually costs at least ten thousand dollars, but whether or not solar panels are worth it depends on a variety of factors like how much you pay for electricity and how much direct sunlight your roof gets.
How long do solar panels last?
On average, solar panels can last about 25 to 30 years. Some even last up to 50 years, but efficiency goes down by about 0.8% each year. You can choose to replace them sooner if you want to maintain a larger amount of energy production.
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.