15 Best Solar Companies in Washington, MO (2024 Reviews)

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

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

Average Washington homeowner saves $1,316/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 Washington

As a homeowner in Washington, you may be planning on switching to solar power and wondering about the best solar companies in your local area. Solar could be a good idea since it has a lot of benefits. Thanks to government support encouraging a growing renewable energy market, homeowners in Washington have access to some of the best solar installers in the country.


If you want to make use of the great amount of benefits of solar, we can help you narrow down your options to find the Washington solar installer that’s right for you.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 Washington by clicking the button below.

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 Washington

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

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

3.0/5

Sustainable Solar

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

Services Offered

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

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

4.9/5

Streib Company

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

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

Sunsent Solar

  • 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 Maintenance
  • Service icon Residential Panels

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

3.0/5

Astrawatt Solar

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

Services Offered

  • Service icon Residential Panels
  • 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

3.0/5

EFS Energy

  • Pros icon Free Quotes
  • 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 Financing Assistance
  • Service icon Consultation
  • Service icon Commercial Panels
  • Service icon Maintenance
  • Service icon Residential Panels

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

Services Offered

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

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

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

Solar City STL

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

Services Offered

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

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

Solar Luxury LLC

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

Services Offered

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

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

4.9/5

Route 66 Solar

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

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

3.0/5

AKA Solar LLC

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

Services Offered

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

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

B-Raines Slate & Solar Roofing Co.

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

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

4.1/5

Vista Energy Renewables

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

Services Offered

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

Website: https://vistaenergyrenewables.com/
Address: 130 W Central St, Bethalto, IL 62010
Phone: 6187170585

Methodology: How We Ranked the Best Solar Companies in Washington

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


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 Washington

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

  • Electricity consumption: The average household in Washington uses a decent amount of, and therefore may save on their energy bills.
  • Your location: This affects how much sunlight your roof gets, which helps determine how many panels you need.
  • Incentives: Along with the federal Solar Investment Tax Credit (ITC), which lets you deduct 0 of your overall installation cost, your state or local government may offer additional tax exemptions, credits or rebates that can help you save even more. Not including incentives, you can save an average of $16,000 over 20 years with your solar system, too.
  • Choice of solar panels: The type of solar panels you want will affect your total cost. High-efficiency monocrystalline panels are more expensive 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 opt for a higher number of more affordable panels.

Due to the cost of solar panels being lower than before as well as several solar incentives, they are a cost-effective investment for most homeowners.

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Solar Incentives in Washington

Although solar power is typically a big investment, it can save you a significant amount of money over many years due to smaller power bills and government incentives.No matter what state you live in, you can take advantage of the federal Solar Investment Tax Credit (ITC), which lets you claim 0 of your project costs when you file taxes, reducing the amount of taxes you owe that year. Plus, there may be some state and city incentives that can save you some extra money too. For comprehensive information about local incentives, see our article on solar incentives.

Environmental Impact of Switching to Solar in Washington

If you’re thinking of adding solar panels to your home, one of the primary reasons why may be to reduce your greenhouse gas emissions.But you may be wondering – how much exactly can you help by making the switch to solar? An important thing to keep in mind is your overall carbon footprint. For example, if your commute is very long, your footprint may be larger, so adopting solar energy for your home can help offset that.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. For those who care about the environment, the upfront cost of solar is a small price to pay for offsetting your carbon emissions.

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 Washington, MO Solar Company Rankings FAQs

What is the most reputable solar company in Washington?

In Washington, Sun Solar St. Louis is the top local solar company. Our team of experts rates it 5.00 stars, so it's a great choice if you're looking to add solar panels to your roof.

Are solar panels really good for the environment?

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. Solar panel manufacturing uses a lot of energy as well. The energy payback period is about 1 to 4 years.

How long does it take for solar to pay for itself?

Solar panels usually pay for themselves in about 14.3 years, but your solar payback period will vary based on your utility costs. The higher your typical energy bill, the quicker your solar panel system will pay for itself.

How long do solar panels last?

Though the average lifespan of solar panels is 25 to 30 years, that doesn't mean they stop working completely. What this means is how much energy they produce 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.