15 Best Solar Companies in Collinsville, IL (2025 Reviews)
We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in Collinsville based on:
Customer review scores
Service area for Collinsville, IL
Company policies and services offered
Accreditations and certifications
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Average Collinsville homeowner saves $1,037/year with solar panels
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Best Solar Companies in Collinsville
As a homeowner in Collinsville, you may be planning on switching to solar power and wondering about the best solar companies in your city. Solar could be a fantastic choice since it has a lot of perks. Plus, forward-thinking government support led to surging numbers of solar companies, setting the ground for a clean, bright and profitable future in the state.
There are lots of installers to choose from, but in this article, we’ll help you narrow down your options by recommending some of the best solar companies in Collinsville.If you want to receive free, no-obligation quotes from the top Collinsville solar installers, you can click the button below to learn more.
Best Solar Financing
Blue Raven Solar
- Industry-leading in-house financing
- Competitive pricing
- Excellent reputation
- Doesn't offer solar batteries
Best for Leasing
Sunrun
- 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 Collinsville

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

Route 66 Solar
Free Quotes
Informative Resources
Clear Pricing Policy
Limited information available on website
Services Offered
Panel Installation
Financing Assistance
System Decommissioning
Grid-Tied Solar System


StraightUp Solar of St. Louis
Informative Resources
Free Quotes
Clear Pricing Policy
Limited information available on website
Services Offered
Financing Assistance
Panel Installation
Grid-Tied Solar System
Consultation
Battery Storage
Cleaning and Maintenance

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

EFS Energy
Clear Pricing Policy
Reliable Customer Support
Informative Resources
Limited information available on website
Services Offered
Financing Assistance
Consultation
Cleaning and Maintenance
Panel Installation


Helio Solar Power, LLC.
Prompt Service Delivery
Informative Resources
Clear Pricing Policy
Reliable Customer Support
Free Quotes
Limited information available on website
Services Offered
Financing Assistance
Solar Carports
Cleaning and Maintenance
Panel Installation
Skilled Repairs
Battery Storage

Solar city stl
Reliable Customer Support
Informative Resources
Free Quotes
Limited information available on website
Services Offered
Battery Storage
Consultation
Panel Installation
Financing Assistance
Cleaning and Maintenance
Permit Assistance


Solar Luxury LLC
Free Quotes
Reliable Customer Support
Limited information available on website
Services Offered
Off-Grid Solar Systems
Consultation
Panel Installation
System Decommissioning
Skilled Repairs

Sustainable Solar
Free Quotes
Reliable Customer Support
Informative Resources
Clear Pricing Policy
Limited information available on website
Services Offered
Battery Storage
Financing Assistance
Panel Installation
System Decommissioning
Off-Grid Solar Systems
Skilled Repairs
Grid-Tied Solar System
Permit Assistance



Purelight Power of St. Louis
Free Quotes
Informative Resources
Reliable Customer Support
Clear Pricing Policy
Limited information available on website
Services Offered
Permit Assistance
Consultation
Financing Assistance
Panel Installation
Grid-Tied Solar System
Methodology: How We Ranked the Best Solar Companies in Collinsville
EcoWatch's solar experts analyzed each solar company in Collinsville 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 Collinsville
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 Collinsville
For many people, the decision of which solar installer to choose comes down to prices.The installation cost is just one important factor you should keep in mind when looking into installing solar panels. How much it'll cost and how much you can save depend on things such as:
- Your current energy bills: Solar panels can greatly lower, or completely eliminate, your utility bills. In Collinsville, you can save an average of $851 a month.
- The type of solar panels you can buy: This depends on how much you’re willing to spend upfront.
- Incentives: The federal solar investment tax credit currently allows you to decrease your taxes by 0 of the project cost. Your state and even local utility companies may also have incentives and rebates that you can benefit from. Plus, you can save about $12,000 over 20 years on your utility bills, not including incentives.
- Your city: This influences the average daily sunlight your roof gets, which helps determine how many panels you need.
Even though a solar panel system costs a good chunk of money upfront, it can save you much more over the lifespan of your panels. The question of how much, though, depends on a number of factors, including the angle of your roof and your current power bills.
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If you're curious 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 Collinsville, IL.
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Solar Incentives in Collinsville
One of the benefits of installing a solar panel system is receiving federal and potentially state incentives.Local solar incentive programs vary by location and, sometimes, utility company. Many states offer rebates for solar power systems, in addition to the federal solar tax credit. Our article on solar incentives goes over more detailed information on the incentives you can find in Collinsville.
Environmental Impact of Switching to Solar in Collinsville
Lots of people want to do their part to help save the planet, which in many cases is the main reason for installing solar panels.You may be wondering – how much does going solar do for the environment anyway? In a city like Collinsville where energy use is rather high, going solar is a fantastic idea for people who are eco-conscious.In fact, if you install solar panels, you could look forward to lowering your carbon dioxide emissions by about 100 pounds each year. If you care about the environment, you’ll no doubt find that there are many advantages to adopting solar energy other than just saving money on electricity. You can also help preserve the environment, which some would argue is priceless.
Best Solar Financing
Blue Raven Solar
- Industry-leading in-house financing
- Competitive pricing
- Excellent reputation
- Doesn't offer solar batteries
Best for Leasing
Sunrun
- Expansive service area
- Many financing options
- Some reported issues with customer service
- Some reported issues with door-to-door sales
EcoWatch's Collinsville, IL Solar Company Rankings FAQs
Which solar company is the best in Collinsville?
The best local solar company in Collinsville is Astrawatt Solar, with a rating of 5.00 stars.
What is the negative environmental impact of solar panels?
Making solar panels requires 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 roof?
Solar panels call for a considerable upfront investment that usually costs at least ten thousand dollars, but whether or not solar panels are worth it depends on a range of factors like local electricity rates and how much direct sunlight your roof gets.
How much solar panel capacity do I need for my house?
Solar panel capacity is the amount of 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 account for 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.
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.