15 Best Solar Companies in Oak Brook, IL (2025 Reviews)
We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in Oak Brook based on:
Customer review scores- Service area for Oak Brook, IL
- Company policies and services offered
- Accreditations and certifications
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Average Oak Brook homeowner saves $1,107/year with solar panels
Why you can trust EcoWatch
Best Solar Companies in Oak Brook
Getting the right solar panel installation company for your home is a big decision, but it's one that can save you a lot of money in Oak Brook. Since the cost of energy is getting higher and higher each year, many homeowners are planning on making the switch to solar to save money on electricity for their homes.
If you want to make use of the great amount of perks of solar, we’re here to help you narrow down your options to find the Oak Brook solar installer that’s the right price for you.Interested in knowing how much it’d cost to install a solar system on your roof? Click "get quote" below to get a free, no-obligation quote from a highly rated Oak Brook solar installer.
EcoWatch Rankings for Solar Companies in Oak Brook
Illinois Solar Express, LLC
Prompt Service Delivery
Limited information available on website
Services Offered
Panel Installation- Permit Assistance
JD Pro Electric Inc
- Informative Resources
- Limited information available on website
Services Offered
- Panel Installation
- Skilled Repairs
- Cleaning and Maintenance
WindSoleil Solar and Wind Energy Services
- Informative Resources
- Reliable Customer Support
- Free Quotes
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Grid-Tied Solar System
- Off-Grid Solar Systems
- Battery Storage
- Panel Installation
FreeWorld Solar
- Informative Resources
- Free Quotes
- Limited information available on website
Services Offered
- Financing Assistance
- Permit Assistance
- Panel Installation
- Skilled Repairs
- Consultation
- Battery Storage
ilumen Solar
- Clear Pricing Policy
- Reliable Customer Support
- Free Quotes
- Informative Resources
- Limited information available on website
Services Offered
- Battery Storage
- Grid-Tied Solar System
- Consultation
- Financing Assistance
- Panel Installation
- Permit Assistance
- Skilled Repairs
- Cleaning and Maintenance
Midwest Solutions Inc
- Reliable Customer Support
- Informative Resources
- Free Quotes
- Prompt Service Delivery
- Limited information available on website
Services Offered
- Panel Installation
- Consultation
Greenlink Energy Solutions
- Informative Resources
- Clear Pricing Policy
- Free Quotes
- Prompt Service Delivery
- Reliable Customer Support
- Limited information available on website
Services Offered
- Financing Assistance
- Cleaning and Maintenance
- System Decommissioning
- Panel Installation
- Battery Storage
- Permit Assistance
Reficiency Solar
- Informative Resources
- Reliable Customer Support
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Consultation
- Skilled Repairs
- Battery Storage
- Panel Installation
Semper Solr
- Clear Pricing Policy
- Free Quotes
- Limited information available on website
Services Offered
- Panel Installation
- Consultation
93Energy Solar
- Informative Resources
- Free Quotes
- Reliable Customer Support
- Clear Pricing Policy
- Prompt Service Delivery
- Limited information available on website
Services Offered
- Permit Assistance
- Battery Storage
- Panel Installation
- Cleaning and Maintenance
- Financing Assistance
RxSun
- Free Quotes
- Reliable Customer Support
- Informative Resources
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Battery Storage
- Cleaning and Maintenance
- Permit Assistance
- Consultation
- Panel Installation
- Financing Assistance
Certasun
- Free Quotes
- Clear Pricing Policy
- Informative Resources
- Reliable Customer Support
- Limited information available on website
Services Offered
- Financing Assistance
- Permit Assistance
- Battery Storage
- Panel Installation
- Consultation
Kapital Electric, Inc.
- Informative Resources
- Reliable Customer Support
- Free Quotes
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Battery Storage
- Panel Installation
- Permit Assistance
- Consultation
- Cleaning and Maintenance
- Tesla Powerwall
Ailey Solar Electric, Inc.
- Free Quotes
- Clear Pricing Policy
- Reliable Customer Support
- Informative Resources
- Limited information available on website
Services Offered
- Panel Installation
- Consultation
Windfree Solar Co
- Reliable Customer Support
- Clear Pricing Policy
- Informative Resources
- Free Quotes
- Limited information available on website
Services Offered
- Consultation
- Battery Storage
- Panel Installation
Methodology: How We Ranked the Best Solar Companies in Oak Brook
EcoWatch's solar experts analyzed each solar company in Oak Brook 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 Oak Brook
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 Oak Brook
We get that for many homeowners, the decision to invest in solar comes down to installation costs.The cost and possible savings vary depending on a few important factors such as:
- The type of solar panels you’re planning on getting: Higher-efficiency panels are more highly priced, so that will determine your budget for your solar project.
- average energy usage: The more electricity your household consumes on average and the larger your current power bills are, the more likely you'll benefit from switching to solar.
- The amount of sunlight your city gets: Due to Oak Brook’s high amount of average daily sunlight, you should be able to save a decent amount on your energy bills.
- The cost of electricity in your area: If your local electricity rates are high, there's a good chance you'll end up with a higher return on your investment in a solar panel system. In Oak Brook, you can save an average of $1,156 a month on your electricity bills.
So is a solar panel system worth it? Whether you want to reduce your electricity costs, carbon dioxide emissions or both, solar panels are a solid investment for many Oak Brook homeowners.
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Solar Incentives in Oak Brook
If you’re considering making the switch to solar energy, a number of government incentives and subsidies can greatly lower your project costs and expedite the return on your investment.In addition to the federal tax credit incentive, there are also some local benefits, which in the majority of cases, can be claimed in addition to the federal incentive, so you can save even more. You can learn about the incentives you can take advantage of in our article on solar incentives
Environmental Impact of Switching to Solar in Oak Brook
An important reason so many consider installing solar panels is to help lower their environmental impact.Many homeowners might be wondering how much exactly they can impact the environment by switching to solar in Oak Brook, though. For homeowners and business owners who want to do their part for the planet, switching to solar power is a straightforward choice, especially since Oak Brook produces a high amount of carbon dioxide emissions from its energy generation.Though solar panel production emits carbon dioxide, the panels make up for it by considerably lowering the amount of CO2 you would have released if you still used traditional energy. In Oak Brook, you can reduce your carbon footprint by 90 pounds a year with solar panels. The advantages of solar power are infinite — just like solar power is! That's why so many homeowners have been happy with making the switch to solar.
EcoWatch's Oak Brook, IL Solar Company Rankings FAQs
What is the most reputable solar panel installation company in Oak Brook?
In Oak Brook, Illinois Solar Express, LLC is the top local solar company. Our team of experts rates it 5.00 stars, so it's a great choice if you're planning on installing solar panels on your roof.
Are solar panels really good for the environment?
Solar panels can be detrimental for the environment when manufacturers use toxic chemicals in the construction. Chemicals can make solar panels difficult to dispose of safely once they’ve reached the end of their lifespan. Making solar panels uses a lot of energy as well. The energy payback period is about 1 to 4 years.
Are solar panels worth it?
Solar panels can be a fruitful investment for most homeowners, but truthfully, they might not be worth it for everyone. If your home doesn't get a lot of direct sunlight or your power bills are already fairly low, solar panels might not be for you.
What is solar panel capacity and how much 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 how much energy they need.
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.