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

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

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

Average Caseyville homeowner saves $1,144/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 Caseyville

When you’re trying to find the best solar companies in Caseyville, combing through all the options can be overwhelming, but it can pay off since adopting solar energy can offer so many fantastic perks. Solar power isn't just good for the Earth — your finances will thank you too. With solar power, you can save an average of $14,000 over 20 years, and this doesn't even include incentives.


As you begin your search for the best solar companies in Caseyville, you might notice that there are a lot of providers to choose between. So, we’ve put together an expertly curated list of the top solar companies in the area.To help you find out if solar panels are a good idea for your home, you can get a free, no-obligation quote from one of the best solar companies in Caseyville by clicking the button below.

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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 Caseyville

Best Local Installer
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EcoWatch Rating

5.0/5

Astrawatt Solar

  • 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 Permit Assistance
  • Service icon Panel Installation
  • Service icon Tesla Powerwall
  • Service icon Consultation

Website: https://www.astrawatt.solar/
Address: 222 S Meramec Ave Suite 202-1100, St. Louis, MO 63105
Phone: 8779374786
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Route 66 Solar

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

Services Offered

  • Service icon Panel Installation
  • Service icon Grid-Tied Solar System
  • Service icon System Decommissioning
  • Service icon Financing Assistance

Website: https://route66solar.com/
Address: 2110 Troy Rd Suite B1, Edwardsville, IL 62025
Phone: 6189001280
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Streib Company

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

Services Offered

  • Service icon Panel Installation

Website: http://streibco.com/
Address: 9225 Watson Industrial Park, St. Louis, MO 63126
Phone: 3144877474
Outstanding Local Installer
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EcoWatch Rating

4.9/5

StraightUp Solar of St. Louis

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

Services Offered

  • Service icon Grid-Tied Solar System
  • Service icon Consultation
  • Service icon Financing Assistance
  • Service icon Battery Storage
  • Service icon Panel Installation
  • Service icon Cleaning and Maintenance

Website: https://straightupsolar.com/st-louis-city-county/
Address: 11696 Lilburn Park Rd, St. Louis, MO 63146
Phone: 3142182663
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.9/5

SunSent 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 Consultation
  • Service icon Skilled Repairs
  • Service icon Panel Installation
  • Service icon Battery Storage
  • Service icon Cleaning and Maintenance
  • Service icon Financing Assistance

Website: https://www.sunsent.com/
Address: 1710 Scherer Pkwy, St Charles, MO 63303
Phone: 6367573083
Outstanding Local Installer
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EcoWatch Rating

4.3/5

EFS Energy

  • 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 Financing Assistance
  • Service icon Panel Installation
  • Service icon Cleaning and Maintenance
  • Service icon Consultation

Website: https://efsenergy.com/
Address: 1283 Research Blvd, St. Louis, MO 63132
Phone: 3147715131
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Purcell Electric Company Inc

  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

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

Website: http://purcellelectricco.com/
Address: 106 W Main St #1518, Salem, IL 62881
Phone: 6185488145
Outstanding Local Installer
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EcoWatch Rating

3.0/5

Helio Solar Power, LLC.

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

Services Offered

  • Service icon Financing Assistance
  • Service icon Panel Installation
  • Service icon Battery Storage
  • Service icon Cleaning and Maintenance
  • Service icon Solar Carports
  • Service icon Skilled Repairs

Website: http://www.heliosolarpower.com/
Address: 119 S Main St, St Charles, MO 63301
Phone: 8884243546
Outstanding Local Installer
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EcoWatch Rating

3.0/5

Solar city stl

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

Website: https://solarcitystl.com/
Address: 3636 S Geyer Rd #100, St. Louis, MO 63127
Phone: 6365154895
Outstanding Local Installer
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EcoWatch Rating

3.0/5

Pyramid Electrical Contractors, Inc.

  • Con icon Limited information available on website

Services Offered

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

Website: http://www.pyramidelectrical.com/
Address: 300 Monticello Pl, Fairview Heights, IL 62208
Phone: 6186321180
Outstanding Local Installer
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EcoWatch Rating

3.0/5

Solar Luxury LLC

  • Pros icon Free Quotes
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon System Decommissioning
  • Service icon Panel Installation
  • Service icon Off-Grid Solar Systems
  • Service icon Consultation
  • Service icon Skilled Repairs

Website: http://www.solarluxurystl.com/
Address: 11252 Midland Blvd Apt 106, St. Louis, MO 63114
Phone: 3143377071
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Sustainable Solar

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

Services Offered

  • Service icon Financing Assistance
  • Service icon Skilled Repairs
  • Service icon System Decommissioning
  • Service icon Grid-Tied Solar System
  • Service icon Panel Installation
  • Service icon Off-Grid Solar Systems
  • Service icon Permit Assistance
  • Service icon Battery Storage

Website: http://sustainablesolarllc.com/
Address: 16226 Veterans Memorial Pkwy, Wright City, MO 63390
Phone: 6364892700
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

BKJ Solar

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

Services Offered

  • Service icon Panel Installation

Website: http://bkjsolar.com/
Address: 907 Harbor Oaks Ct, Hazelwood, MO 63031
Phone: 3148995527
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

AKA Solar LLC

  • Pros icon Free Quotes
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Consultation
  • Service icon Panel Installation

Website: http://www.akasolarusa.com/
Address: 119 S Main St, St Charles, MO 63301
Phone: 3143148925
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Purelight Power of St. Louis

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

Services Offered

  • Service icon Permit Assistance
  • Service icon Consultation
  • Service icon Panel Installation
  • Service icon Grid-Tied Solar System
  • Service icon Financing Assistance

Website: https://purelightpower.com/st-louis-solar-installation/
Address: 12747 Olive Blvd Suite 302, St. Louis, MO 63141
Phone: 3145826129

Methodology: How We Ranked the Best Solar Companies in Caseyville

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


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 Caseyville

The cost of putting up solar panels has gone down immensely in the past several years, but it’s still a substantial investment for most homeowners.Some significant things that determine the cost and possible savings include:

  • The kind of solar panels you’re thinking of getting: Higher-efficiency panels have higher prices, so that will shape your budget for your solar project.
  • The amount of sunlight your roof gets: If your roof gets limited direct sunlight, your solar panels won’t be able to generate as much energy, which will leave you with lower savings on electric bills than someone with a roof that gets plenty of sunlight.
  • Incentives: The federal solar investment tax credit currently lets you decrease your taxes by 0 of the project cost. Your state and city may also have various incentives that you can take advantage of. In addition, you can save about $14,000 over 20 years on your utility bills, before factoring in incentives.
  • Energy consumption: Installing a solar system may be too steep of an investment for families that don’t need a lot of energy each month.

So is a solar system worth it? Whether you want to lower your energy bills, carbon emissions or both, solar panels are a great investment for many Caseyville homeowners.

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Solar Incentives in Caseyville

If you’re considering switching to solar power, various government incentives and subsidies can greatly lower the installation costs and speed up the return on your investment.These incentives normally consist of cash rebates, tax credits and/or solar renewable energy credits. They can reduce the cost of going solar by 0, upwards of 50% depending on your location. In our article on solar incentives, you can read about the incentives you qualify for in Caseyville.

Environmental Impact of Switching to Solar in Caseyville

Swapping traditional energy for solar is a profound way to do your part for a cleaner and more sustainable future.But you may be wondering – how much exactly can you help by using solar power? Your energy usage is an important factor to think about. The more power your home uses, the bigger your impact when you make the switch to solar power.While solar panel production emits carbon dioxide, the panels make up for it by greatly lowering the amount of CO2 you would have been responsible for if you still used traditional energy. In Caseyville, you can reduce your carbon footprint by 100 pounds a year with solar panels. For people who are worried about the environment, the upfront cost of solar is a small price to pay for reducing your carbon footprint.

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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 Caseyville, IL Solar Company Rankings FAQs

What is the most reputable solar company in Caseyville?

The best local solar company in Caseyville is Astrawatt Solar, with a rating of 5.00 stars.

What are the best and worst things about solar power?

The advantages of solar power are that it can lower or, in some cases, completely cut your electricity bills, improve your home’s value and lower your carbon footprint. The main disadvantages are that solar panels can be costly to install, you may not save a lot if you don’t use a lot of electricity and it doesn’t work for all roof types and locations.

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

The average payback period for solar panel installation is about 18.4 years, but the exact period varies by the cost of electricity where you are, incentives and net metering programs.

How often do solar panels have to be replaced?

Although the average lifespan of solar panels is 25 to 30 years, that doesn't mean they should be disposed of. What this means is their energy production will have decreased significantly after that point. You can opt to replace them after having them for that long or you can keep using them at a lower efficiency after that time.

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.