15 Best Solar Companies in St. Louis, MO (2025 Reviews)
We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in St. Louis based on:
Customer review scores- Service area for St. Louis, MO
- Company policies and services offered
- Accreditations and certifications
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Average St. Louis homeowner saves $1,393/year with solar panels
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Best Solar Companies in St. Louis
Hoping to go solar but not sure which solar panel installer would be the best one for your needs? Although it can be hard to choose a solar company, the search will pay off because going solar has many great benefits. One of the main reasons those living in St. Louis, where the average energy bill is pretty high, consider going solar is to decrease their monthly bills.
There are so many installers to choose from, but in this article, we’ll help you pin down your options by recommending some of the best solar companies in St. Louis.To help you know if solar panels are worth it for your home, you can get a free, no-obligation quote from one of the best solar companies in St. Louis by clicking the button below.
EcoWatch Rankings for Solar Companies in St. Louis
Astrawatt Solar
Free Quotes- Informative Resources
- Reliable Customer Support
- Clear Pricing Policy
Limited information available on website
Services Offered
Battery Storage- Consultation
- Permit Assistance
- Panel Installation
- Tesla Powerwall
Streib Company
- Free Quotes
- Reliable Customer Support
- Informative Resources
- Limited information available on website
Services Offered
- Panel Installation
StraightUp Solar of St. Louis
- Free Quotes
- Informative Resources
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Consultation
- Panel Installation
- Cleaning and Maintenance
- Grid-Tied Solar System
- Financing Assistance
- Battery Storage
Route 66 Solar
- Free Quotes
- Clear Pricing Policy
- Informative Resources
- Limited information available on website
Services Offered
- Grid-Tied Solar System
- Panel Installation
- System Decommissioning
- Financing Assistance
SunSent Solar
- Free Quotes
- Reliable Customer Support
- Clear Pricing Policy
- Informative Resources
- Limited information available on website
Services Offered
- Financing Assistance
- Consultation
- Battery Storage
- Skilled Repairs
- Cleaning and Maintenance
- Panel Installation
EFS Energy
- Informative Resources
- Reliable Customer Support
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Cleaning and Maintenance
- Financing Assistance
- Consultation
- Panel Installation
Helio Solar Power, LLC.
- Reliable Customer Support
- Informative Resources
- Free Quotes
- Clear Pricing Policy
- Prompt Service Delivery
- Limited information available on website
Services Offered
- Skilled Repairs
- Panel Installation
- Battery Storage
- Solar Carports
- Financing Assistance
- Cleaning and Maintenance
Solar city stl
- Reliable Customer Support
- Free Quotes
- Informative Resources
- Limited information available on website
Services Offered
- Cleaning and Maintenance
- Battery Storage
- Panel Installation
- Financing Assistance
- Consultation
- Permit Assistance
Pyramid Electrical Contractors, Inc.
- Limited information available on website
Services Offered
- Cleaning and Maintenance
- Panel Installation
- Skilled Repairs
Solar Luxury LLC
- Reliable Customer Support
- Free Quotes
- Limited information available on website
Services Offered
- System Decommissioning
- Off-Grid Solar Systems
- Consultation
- Panel Installation
- Skilled Repairs
Sustainable Solar
- Informative Resources
- Free Quotes
- Reliable Customer Support
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Off-Grid Solar Systems
- System Decommissioning
- Skilled Repairs
- Permit Assistance
- Financing Assistance
- Battery Storage
- Panel Installation
- Grid-Tied Solar System
BKJ Solar
- Informative Resources
- Free Quotes
- Reliable Customer Support
- Limited information available on website
Services Offered
- Panel Installation
AKA Solar LLC
- Reliable Customer Support
- Free Quotes
- Limited information available on website
Services Offered
- Panel Installation
- Consultation
Purelight Power of St. Louis
- Reliable Customer Support
- Informative Resources
- Clear Pricing Policy
- Free Quotes
- Limited information available on website
Services Offered
- Panel Installation
- Financing Assistance
- Consultation
- Permit Assistance
- 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. Louis
EcoWatch's solar experts analyzed each solar company in St. Louis 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. Louis
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 St. Louis
We know that for most homeowners, the decision to invest in solar highly depends on installation costs.The installation cost is just one important factor you should consider when looking into installing solar panels. How much it'll cost and how much you can save depend on things including:
- Incentives: Along with the federal Solar Investment Tax Credit (ITC), which gives you a tax credit currently worth 0 of your overall installation cost, your state or local government may offer additional tax exemptions, credits or rebates that will help you save even more. Aside from incentives, you can save an average of $17,000 over the first 20 years with your solar panels, too.
- average energy usage: The more power your household consumes on average and the higher your current power bills are, the more benefits you’ll see from making the switch to solar.
- Average daily sunlight: Since St. Louis gets a decent amount of average daily sunlight, your solar panels can generally generate enough energy to power your whole home, which affects how much you can save on your energy bills.
- System size and type: Some models are more pricy than others, so the one you want can raise or lower your initial investment. Plus, the more solar panels you need to get, the more it'll cost.
Solar is a valuable investment for most homeowners. You can produce your own power instead of paying for it from a utility company and make use of solar incentives and rebates, all while helping the planet.
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Solar Incentives in St. Louis
In an effort to increase the number of homes and businesses that use solar power, federal, state and local governments – and even some utility companies – offer incentives to help make switching to solar power more financially viable and accessible.There are a lot of federal, state and local rebates and tax credits that earn a decent amount of money back after buying a solar panel system. Take a look at our article on solar incentives to see what incentives you can benefit from.
Environmental Impact of Switching to Solar in St. Louis
Replacing nonrenewable energy with solar power is a powerful way to do your part for a more environmentally-friendly future.But you may be wondering – how much exactly can you help the environment by using solar power? In St. Louis, where the energy generation produces a lot of greenhouse gasses, going solar can have a big impact on the environment since solar power is a renewable source of energy.Though solar panel production emits carbon dioxide, the panels make up for it by considerably lowering the amount of CO2 you would have been responsible for if you still used nonrenewable energy. In St. Louis, you can reduce your carbon footprint by 100 pounds a year with solar panels. For those who are worried about the environment, the upfront cost of solar is a small price to pay for the offset carbon emissions.
EcoWatch's St. Louis, MO Solar Company Rankings FAQs
Which solar installation company is the best in St. Louis?
The best local solar company in St. Louis is Astrawatt Solar, with a rating of 5.00 stars.
What are the major pros and cons of going solar?
A few of the biggest pros are that it decreases your power bills, it’s environmentally friendly, and it gives you a significant return on your investment (ROI). The most notable cons are that solar panels don’t work as well when there’s limited direct sunlight, the installation cost is pricey and solar panels can look clunky on your roof.
How long does it take for solar to pay for itself?
The average payback period for solar panel installation is about 13.5 years, but the exact period varies depending on the cost of electricity where you are, incentives and net metering programs.
When is the best time of year to install solar panels?
Despite summer being the most popular 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.