15 Best Solar Companies in Greenville, IL (2024 Reviews)

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

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

Average Greenville homeowner saves $1,457/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 Greenville

Searching for the best solar companies in Greenville? Installing a solar panel system is an exciting home addition that many homeowners find beneficial for their wallets, communities and the planet. On average, your family can save $17,000 over 20 years when you use solar power. And since solar panels last about 25 to 30 years, your total savings will be well above that overall.


As you start your search for the best solar companies in Greenville, you’ll notice that there are many providers to choose between. So, we’ve organized a carefully curated list of the top solar companies in the area.To get free quotes from the best solar companies in Greenville, click the "get quote" 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 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 Greenville

Best Local Installer
ecowatch badge icon

EcoWatch Rating

4.9/5

Route 66 Solar

  • 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 Energy Efficiency Audit
  • Service icon Financing Assistance
  • 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

Purcell Electric Company Inc

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

Services Offered

  • Service icon Residential Panels
  • Service icon Emergency Services
  • Service icon Skilled Repairs
  • Service icon Solar Panel Upgrades
  • Service icon Maintenance
  • Service icon Commercial Panels

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

5.0/5

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 Consultation
  • Service icon Residential Panels
  • Service icon Tesla Powerwall

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

StraightUp Solar of St. Louis

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

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

Streib Company

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

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 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

Pyramid Electrical Contractors, Inc.

  • Con icon Limited information available on website

Services Offered

  • Service icon Skilled Repairs
  • Service icon Full-Service
  • Service icon Emergency Services
  • Service icon EV Charger
  • Service icon Commercial Panels
  • Service icon Residential Panels
  • Service icon Maintenance

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

4.2/5

EFS Energy

  • 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 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

Tick Tock Energy, Inc.

  • 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 Community Solar Projects
  • Service icon Residential Panels
  • Service icon Solar Panel Upgrades
  • Service icon Emergency Services
  • Service icon Off-Grid Solar Systems
  • Service icon Financing Assistance
  • Service icon Commercial Panels

Website: http://www.ticktockenergy.com/
Address: 800 E Fayette Ave, Effingham, IL 62401
Phone: 2179949020
Outstanding Local Installer
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EcoWatch Rating

3.0/5

Helio Solar Power, LLC.

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

Services Offered

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

Sonne Energy Solutions, LLC

  • 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 Residential Panels
  • Service icon Commercial Panels
  • Service icon Maintenance

Website: http://www.sonneenergysolutions.com/
Address: 114 E Walnut St, Teutopolis, IL 62467
Phone: 2178648222
Outstanding Local Installer
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EcoWatch Rating

3.0/5

five stars electric and solar LLC

  • Pros icon Prompt Service Delivery
  • 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 Residential Panels

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
Outstanding Local Installer
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EcoWatch Rating

3.0/5

BKJ Solar

  • 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 Residential Panels
  • Service icon Commercial Panels

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

Solar Luxury LLC

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

3.0/5

Solar city stl

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

Services Offered

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

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

Methodology: How We Ranked the Best Solar Companies in Greenville

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


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 Greenville

For many people, the decision of which solar installer to choose depends on how much it’ll cost.There are a few factors you should take into consideration when trying to determine the overall cost and how much you can save, including:

  • Choice of solar panels: The kind 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 go with a higher number of more affordable panels.
  • Incentives: Those who purchase and install a solar energy system this year can save 0 of their total solar spend by using the federal solar investment tax credit. You can also save about $17,000 on your energy bills over 20 years excluding incentives.
  • The amount of sunlight your area gets: Due to Greenville’s high amount of average daily sunlight, you should be able to save a decent amount on your electric bills.
  • How much energy your household consumes: Homes that use plenty of energy each month may call for more solar panels and, as a result, be more costly, but will also save more on their energy bills over time.

Thanks to solar panels decreasing in cost as well as various solar incentives, they are a solid investment for the majority of homeowners.

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Solar Incentives in Greenville

Because solar power is more sustainable than burning fossil fuels, there are quite a few government incentives in place to encourage its adoption.These incentives mostly include cash rebates, tax benefits and/or performance-based incentives. They can lower how much you pay for installing solar panels by 0, upwards of 50% depending on where you live. Our article on solar incentives goes over more detailed information on the incentives you can take advantage of in Greenville.

Environmental Impact of Switching to Solar in Greenville

One of the best reasons to embrace solar power is to decrease your dependence on traditional energy sources like burning fossil fuels, which are hazardous for the environment.But – how much exactly can you help the planet by making the switch to solar? The more energy your house uses, the the more the environment will benefit from you switching to solar since you won’t have to burn as many fossil fuels.In Greenville, the average person can reduce their carbon footprint by 100 pounds a year after going solar. Since solar energy is abundant and generates electricity without releasing carbon emissions, adding solar panels to your home is one easy step you can take to help protect the planet.

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 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 Greenville, IL Solar Company Rankings FAQs

Which solar power company is the best in Greenville?

The best local solar company in Greenville is Route 66 Solar, with a rating of 4.90 stars.

What are the advantages and disadvantages of solar power?

The main advantages of solar power are that it can decrease or, in some cases, entirely cut your electricity bills, raise your home’s value and lower your carbon footprint. The biggest 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.

Are solar panels worth it?

Solar panels can be a good investment for lots of homeowners, but frankly, they might not be worth it for everyone. If your home doesn't get enough sunlight or your energy bills are already fairly low, solar panels might not be for you.

What is the best type of solar panel?

There are three main types of solar panels: monocrystalline, polycrystalline and thin-film. As for efficiency and price, monocrystalline has the highest for both, then polycrystalline, and then thin-film. The best choice for you is highly influenced by your roof configuration, how much you're willing to spend and how much energy generation you want.

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.