15 Best Solar Companies in O'Fallon, MO (2024 Reviews)

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

  • Customer review scores
  • Service area for O'Fallon, MO
  • Company policies and services offered
  • Accreditations and certifications

Average O'Fallon homeowner saves $1,295/year with solar panels

By EcoWatch Local Advisors

Data Analysis: James Savino

Ranking Methodology: Karsten Neumeister

Updated February 01, 2024

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 O'Fallon

When deciding on the best solar installers, O'Fallon homeowners have more choices than ever before, which can be a lot to take in, but we’re here to make making the switch to solar power less confusing. Because O'Fallon has a great capacity for solar power generation, switching to solar is financially rewarding for many homeowners.


There are plenty 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 O'Fallon.Interested in seeing how much it’d cost to install solar panels on your roof? Click "get quote" below to get a free, no-obligation quote from a top O'Fallon solar installer.

Best National Provider

SunPower

★★★★★
5.0

  • Most efficient panels on the market
  • National coverage
  • Cradle to Cradle sustainability certification
  • Great warranty coverage
  • Expensive
  • Customer service varies by local dealer

Best Solar Financing

Blue Raven Solar

★★★★★
4.5

  • Industry-leading in-house financing
  • Competitive pricing
  • Excellent reputation
  • Doesn't offer solar batteries

Best Technology

Tesla Energy

★★★★★
3.2

  • Price-match guarantee
  • Sleek, efficient, and durable solar panels
  • Best solar battery on the market
  • Some reported issues with customer service
  • Customer service varies by local dealer

EcoWatch Rankings for Solar Companies in O'Fallon

Best Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Sunsent Solar

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

Services Offered

  • Service icon Maintenance
  • Service icon Residential Panels

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

EcoWatch Rating

5.0/5

Sun Solar 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 Solar Carports
  • Service icon Tesla Powerwall
  • Service icon Financing Assistance
  • Service icon Residential Panels
  • Service icon Commercial Panels

Website: http://www.ussunsolar.com/
Address: 10855 Metro Ct, Maryland Heights, MO 63043
Phone: 4174131786
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.8/5

StraightUp Solar

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

Services Offered

  • Service icon Battery Storage
  • Service icon EV Charger
  • Service icon Tesla Powerwall
  • Service icon Maintenance
  • Service icon Residential Panels
  • Service icon Commercial Panels

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

EcoWatch Rating

3.0/5

Helio Solar Power, LLC.

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

Services Offered

  • Service icon Solar Carports
  • Service icon Commercial Panels
  • Service icon Skilled Repairs
  • Service icon Maintenance
  • Service icon Battery Storage
  • Service icon Residential Panels
  • Service icon Financing Assistance

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

AKA Solar LLC

  • 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 Commercial Panels
  • Service icon Consultation
  • Service icon Residential Panels

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

EcoWatch Rating

4.9/5

Streib Company

  • 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 Residential Panels
  • Service icon Full-Service
  • Service icon Commercial Panels

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

3.0/5

Purelight Power of St. Louis

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

Services Offered

  • Service icon Permit Assistance
  • Service icon Residential Panels
  • Service icon Commercial Panels
  • Service icon Consultation
  • Service icon Financing Assistance

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

EcoWatch Rating

3.0/5

EFS Energy

  • 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 Maintenance
  • Service icon Residential Panels
  • Service icon Consultation
  • Service icon Commercial Panels
  • Service icon Financing Assistance

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

Solar Luxury LLC

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

Services Offered

  • Service icon Consultation
  • Service icon Residential Panels
  • Service icon System Decommissioning
  • Service icon Off-Grid Solar Systems
  • Service icon Skilled Repairs

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

3.0/5

Astrawatt Solar

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

Services Offered

  • Service icon Tesla Powerwall
  • Service icon Consultation
  • Service icon Residential Panels

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

3.0/5

BKJ Solar

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

Services Offered

  • Service icon Commercial Panels
  • Service icon Residential Panels

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

Sustainable Solar

  • 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 Financing Assistance
  • Service icon Grid-Tied Solar System
  • Service icon Off-Grid Solar Systems
  • Service icon Residential Panels
  • Service icon Permit Assistance
  • Service icon Battery Storage
  • Service icon Skilled Repairs

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

B-Raines Slate & Solar Roofing Co.

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

Services Offered

  • Service icon Residential Panels
  • Service icon Integrated roofing
  • Service icon Skilled Repairs
  • Service icon Home installations
  • Service icon Business installations
  • Service icon Tailored solutions
  • Service icon Expert panel installation

Website: http://www.b-raines.com/
Address: 231 S Bemiston Ave #800, Clayton, MO 63105
Phone: 3145007663
Outstanding Local Installer
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EcoWatch Rating

3.0/5

Solar City STL

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

Services Offered

  • Service icon Residential Panels
  • Service icon Maintenance
  • Service icon Battery Storage
  • Service icon Commercial Panels
  • Service icon Financing Assistance
  • Service icon Permit Assistance
  • Service icon Consultation

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

4.9/5

Route 66 Solar

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

Services Offered

  • Service icon Financing Assistance
  • Service icon Residential Panels
  • Service icon Energy Efficiency Audit

Website: https://route66solar.com/
Address: 2110 Troy Rd Suite B1, Edwardsville, IL 62025
Phone: 6189001280

Methodology: How We Ranked the Best Solar Companies in O'Fallon

EcoWatch's solar experts analyzed each solar company in O'Fallon 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 O'Fallon


Below are some the criteria we examined specifically for Missouri 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 O'Fallon

We get that for most homeowners, the choice to invest in solar highly depends on installation costs.The cost of solar and the savings it generates vary depending on some important factors such as:

  • Electricity consumption: The average household in O'Fallon uses a decent amount of, and therefore may save on their energy bills.
  • Choice of solar panels: The kind of solar panels you want will affect your total cost. High-efficiency monocrystalline panels will cost more upfront but can also lead to more savings over the lifetime of your system. If space isn't a constraint for your project, you can go with a higher number of more affordable panels.
  • Incentives: The federal solar investment tax credit currently allows you to 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 $15,000 over 20 years on your utility bills, without incentives.
  • How much sunlight your roof gets: If your rooftop doesn’t see much direct sunlight, your solar panels won’t be able to generate as much energy, which will leave you with lower savings on energy bills than a house with a roof that gets plenty of sunlight.

So is buying solar panels worth it? Whether you hope to decrease your electric bills, carbon emissions or both, solar panels are a great investment for many O'Fallon homeowners.

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Solar Incentives in O'Fallon

Although installing solar panels is typically a $15,000 to $25,000 investment, it can save you a substantial amount of money over many years due to reduced energy bills and government incentives.There are several federal, state and local rebates and tax credits that can earn you a decent amount of money back after installing a solar panel system. In our article on solar incentives, you can read about the incentives you qualify for in your area.

Environmental Impact of Switching to Solar in O'Fallon

Going solar can have a meaningful effect on the environment.Something many might be wondering about is how much can they really help save the environment by switching to solar power anyway? The more energy you use, the better off the planet will be if you switch to solar as you won’t have to burn as many fossil fuels.Although solar panel production releases carbon dioxide emissions, the panels make up for it by greatly decreasing the amount of CO2 you would have released if you still used traditional energy. In O'Fallon, you can reduce your carbon footprint by 100 pounds a year with solar panels. Since solar energy is plentiful and makes electricity without a carbon footprint, adding solar panels to your home is one easy step you can take to help the environment.

Best National Provider

SunPower

★★★★★
5.0

  • Most efficient panels on the market
  • National coverage
  • Cradle to Cradle sustainability certification
  • Great warranty coverage
  • Expensive
  • Customer service varies by local dealer

Best Solar Financing

Blue Raven Solar

★★★★★
4.5

  • Industry-leading in-house financing
  • Competitive pricing
  • Excellent reputation
  • Doesn't offer solar batteries

Best Technology

Tesla Energy

★★★★★
3.2

  • Price-match guarantee
  • Sleek, efficient, and durable solar panels
  • Best solar battery on the market
  • Some reported issues with customer service
  • Customer service varies by local dealer

EcoWatch's O'Fallon, MO Solar Company Rankings FAQs

Which solar power company is the best in O'Fallon?

The top local solar company in O'Fallon is Sunsent Solar, with a rating of 3.00 stars.

What are a few of the main advantages and disadvantages of adopting solar power?

The advantages of solar power are that it can reduce or, for some, completely eradicate your electricity bills, improve the value of your home and cut back on your carbon footprint. The biggest disadvantages are that solar panels can be expensive to install, you may not save as much if you don’t use a lot of electricity and whether you can install solar panels depends on your roof configuration.

Are solar panels worth it?

Solar panels call for a large upfront investment that usually costs at least ten thousand dollars, but whether or not solar panels are worth it depends on a collection of factors like local electricity rates and how much direct sunlight your roof gets.

How often do solar panels have to be replaced?

Though the average lifespan of solar panels is 25 to 30 years, that doesn't mean they are completely unusable. What this means is how much energy they produce will have decreased significantly after that point. You can choose to replace them once you've had them for that long or you can continue to use 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.