15 Best Solar Companies in Affton, MO (2025 Reviews)

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

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

Average Affton homeowner saves $1,408/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 Affton

Choosing the right solar panel installation company for your roof is a big decision, but it's one that can pay off big in Affton. Plus, the solar industry is thriving in Affton, giving homeowners access to some of the best solar companies in the country.


To help you navigate through the large amount of Affton solar installers, we’ve come up with a list of the top ones.If you’d like to get free, no-obligation quotes from the best Affton solar companies, you can click the button below to learn more.

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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

EcoWatch Rankings for Solar Companies in Affton

Best Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

Astrawatt Solar

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

Services Offered

  • Service icon Battery Storage
  • Service icon Tesla Powerwall
  • Service icon Permit Assistance
  • Service icon Panel Installation
  • 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

Streib Company

  • Pros icon Informative Resources
  • Pros icon Free Quotes
  • Pros icon Reliable Customer Support
  • 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 Panel Installation
  • Service icon Consultation
  • Service icon Cleaning and Maintenance
  • Service icon Financing Assistance
  • Service icon Grid-Tied Solar System
  • Service icon Battery Storage

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

4.9/5

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

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

4.9/5

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

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

4.3/5

EFS Energy

  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • 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 Consultation
  • Service icon Financing Assistance

Website: https://efsenergy.com/
Address: 1283 Research Blvd, St. Louis, MO 63132
Phone: 3147715131
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 Informative Resources
  • Pros icon Reliable Customer Support
  • Pros icon Prompt Service Delivery
  • Con icon Limited information available on website

Services Offered

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

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

Services Offered

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

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

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

Sustainable Solar

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

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

3.0/5

BKJ Solar

  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • 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
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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
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EcoWatch Rating

3.0/5

Purelight Power of St. Louis

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

Services Offered

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

3.0/5

five stars electric and solar LLC

  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation

Website: https://five-stars-electric-and-solar-llc.business.site/
Address: 3725 michigan ave Chesterfield Missouri Fenton Missouri University City, 3725 Michigan Ave, St. Louis, MO 63118
Phone: 3146857515

Methodology: How We Ranked the Best Solar Companies in Affton

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


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 Affton

Solar panels run off a free energy source — the sun — but before you can take advantage of this you first need to pay to set up your system.The overall price and potential savings vary depending on some important factors such as:

  • How much you spend on energy: The typical family in Affton shells out around $1,300 a year on energy alone, so you could end up with that much in savings.
  • The type and model of solar panels you want to get: More high-tech panels cost more, so that will affect your budget for your solar project.
  • The amount of sunlight your roof gets: If your roof gets limited direct sunlight, your solar panel system won’t be able to produce as much energy, which will give you lower savings on electricity bills than a roof that gets lots of sunlight.
  • Incentives: Those who buy and install a solar system this year can save 0 of their overall solar costs by taking advantage of the federal solar investment tax credit. You can also save about $17,000 on your utility bills over 20 years not including incentives.

There are many wonderful benefits of solar despite the initial cost of installation. It can help the Earth and your finances. In addition, it can increase the value of your home, leading to even more benefits if you want to sell your home later.

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Adopting clean energy can substantially impact both the environment and your bills. To see how much, check out the calculator below. You can also view our solar panel cost guide for Affton, MO.

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Solar Incentives in Affton

Adopting solar power has many wonderful benefits. Not only can it help preserve the environment, but you can also save a good amount of money on your installation with various government incentives.These incentives typically include cash rebates, tax breaks and/or solar renewable energy credits. They can lower the cost of going solar by 0, upwards of 50% in some cases. You can learn about the incentives you can take advantage of in our article on solar incentives

Environmental Impact of Switching to Solar in Affton

Many want to do what they can to help the environment, which often is the prime reason for installing solar panels.But how much can installing solar panels actually affect the environment? Switching to clean energy for electricity rather than using nonrenewable energy is an impactful way to reduce carbon dioxide emissions if you're worried about Affton's large level of greenhouse gas emissions.In fact, if you make the switch to solar power, you could look forward to lowering your carbon dioxide emissions by about 100 pounds each year. As you can see, trading traditional energy for solar has so many other benefits apart from saving money. One of the most important ones is that you can help save the environment too.

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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

EcoWatch's Affton, MO Solar Company Rankings FAQs

Which solar power company is the best in Affton?

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

What are the best and worst things about solar power?

A few of the biggest pros are that it decreases your power bills, it’s environmentally friendly, and it can provide a decent return on your investment (ROI). The most notable cons are that solar panels don’t produce electricity at night, the startup costs are high and solar panels can look clunky on your roof.

Are solar panels worth it?

Solar panels can be a good investment for a majority of homeowners, but truthfully, they might not be worth it for everyone. If your home doesn't get a lot of direct sunlight or your electricity bills are already pretty low, solar panels might not be for you.

What is the best type of solar panel?

The different types of solar panels are monocrystalline, polycrystalline and thin-film. Monocrystalline panels are more efficient but also more costly. Polycrystalline panels are cheaper but also less efficient than monocrystalline. Thin-film solar panels are flexible, so they can be used where the other kinds can’t, such as on curved surfaces or cars, but they are also less efficient. The best one for you depends on your budget, the layout of your roof and how much efficiency you're looking for.

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.