15 Best Solar Companies in St. Clair, IL (2025 Reviews)
We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in St. Clair based on:
Customer review scores
Service area for St. Clair, IL
Company policies and services offered
Accreditations and certifications
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Average St. Clair homeowner saves $1,271/year with solar panels
Why you can trust EcoWatch
Best Solar Companies in St. Clair
If you’re a homeowner looking to make use of the solar incentives in St. Clair, it can be hard to narrow down which company to go with. But, the process is worth it since switching to solar energy is typically a fantastic choice. Installation costs can be high, but adopting solar will save you money on your energy bills over many years. In fact, you can expect to save about $15,000 over 20 years.
If you’re planning on going solar, the first step to take is to find the best solar companies in St. Clair and compare quotes. The good news is we did the hard work and made a list of the best solar companies for you.To receive free quotes from the best solar companies in St. Clair, you can click "get quote" below.
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 St. Clair

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

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


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

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

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


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

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


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



Purelight Power of St. Louis
Reliable Customer Support
Free Quotes
Clear Pricing Policy
Informative Resources
Limited information available on website
Services Offered
Panel Installation
Financing Assistance
Permit Assistance
Consultation
Grid-Tied Solar System

five stars electric and solar LLC
Limited information available on website
Services Offered
Panel Installation
Methodology: How We Ranked the Best Solar Companies in St. Clair
EcoWatch's solar experts analyzed each solar company in St. Clair 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 St. Clair
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 St. Clair
Solar panels run off a free energy source — the sun — but before you can take advantage of this you must first pay to set up your system.The installation cost is just one important factor you should bear in mind when looking into getting solar panels. How much it'll cost and how much you can save depend on things such as:
- Incentives: The federal solar investment tax credit currently lets you reduce your taxes by 0 of the project cost. Your state may also have incentives and rebates that you can take advantage of. Additionally, you can save about $15,000 over 20 years on your utility bills, without incentives.
- System size and type: Some models are more expensive than others, so the one you decide on can raise or lower your initial investment. Plus, the more solar panels you need to buy, the more it'll cost.
- Where your home is: This affects how much sunlight your roof gets, which helps determine how many panels you need.
- How much power your household needs: If your home regularly uses a lot of energy, you'll reap more rewards from going solar.
Thanks to solar panels now being cheaper than ever as well as various solar incentives, they are a cost-effective investment for most homeowners.
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If you're wondering what your impact could be if you switch to solar, you can use the calculator below. You can also view our solar panel cost guide for St. Clair, IL.
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Solar Incentives in St. Clair
One of the good things about installing a solar panel system is earning incentives from the government.Regardless of what state you live in, you can take advantage of the federal Solar Investment Tax Credit (ITC), which allows you to claim 0 of how much you paid for your solar installation when you file taxes, lowering the amount of taxes you owe that year. Plus, there may be some state and city incentives that stack with the ITC too. You can learn about the incentives you can take advantage of in our article on solar incentives
Environmental Impact of Switching to Solar in St. Clair
Making the switch to solar power is a great way to do what you can for a more eco-friendly future.But you may be curious – how much exactly can you help by using solar power? In a city like St. Clair where energy use is rather high, installing solar panels is a great idea for households who care about the planet.In St. Clair, the average resident can reduce their carbon footprint by 100 pounds a year once they go solar. Since solar energy is renewable and produces electricity without free from carbon dioxide emissions, installing solar panels is one easy step you can take to help protect the environment.
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 St. Clair, IL Solar Company Rankings FAQs
What is the top solar installer in St. Clair?
The best local solar company in St. Clair is Astrawatt Solar, with a rating of 5.00 stars.
What is the negative environmental impact of solar panels?
Solar panels can be bad for the environment when manufacturers use toxic chemicals in the construction. Chemicals can make solar panels difficult to recycle 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.
Is it worth putting solar panels on my roof?
Solar panels need a large upfront investment that costs over ten thousand dollars, but whether or not solar panels are worth it depends on a variety of factors like the cost of electricity near you and how much direct sunlight your roof gets.
When is the best time of year to install solar panels?
Although summer is the most common time people install solar panels, the perfect time is actually winter. You can save money since there's decreased demand during the winter months, and it allows you to be up and running with solar for the higher power bills you may get during the summer.
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.