15 Best Solar Companies in Alton, IL (2025 Reviews)
We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in Alton based on:
Customer review scores- Service area for Alton, IL
- Company policies and services offered
- Accreditations and certifications
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Average Alton homeowner saves $1,294/year with solar panels
Why you can trust EcoWatch
Best Solar Companies in Alton
Looking for the top solar companies in Alton? Installing solar panels is an exciting project that many homeowners find valuable for their wallets, communities and the planet. Because of Alton's great level of sunshine on average, there are lots of solar companies to choose from.
Here, we’ll list out some of the top solar companies in Alton to make your choice a little bit easier.To get free quotes from the best solar companies in Alton, click the "get quote" button below.
Best Solar Financing
Blue Raven Solar
- Industry-leading in-house financing
- Competitive pricing
- Excellent reputation
- Doesn't offer solar batteries
Best for Leasing
Sunrun
- 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 Alton
Astrawatt Solar
Clear Pricing Policy- Reliable Customer Support
- Free Quotes
- Informative Resources
Limited information available on website
Services Offered
Panel Installation- Tesla Powerwall
- Permit Assistance
- Consultation
- Battery Storage
Route 66 Solar
- Informative Resources
- Free Quotes
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Grid-Tied Solar System
- Panel Installation
- System Decommissioning
- Financing Assistance
StraightUp Solar of St. Louis
- Free Quotes
- Informative Resources
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Battery Storage
- Cleaning and Maintenance
- Grid-Tied Solar System
- Financing Assistance
- Consultation
- Panel Installation
SunSent Solar
- Informative Resources
- Clear Pricing Policy
- Free Quotes
- Reliable Customer Support
- Limited information available on website
Services Offered
- Consultation
- Financing Assistance
- Panel Installation
- Skilled Repairs
- Battery Storage
- Cleaning and Maintenance
Streib Company
- Informative Resources
- Free Quotes
- Reliable Customer Support
- Limited information available on website
Services Offered
- Panel Installation
EFS Energy
- Informative Resources
- Reliable Customer Support
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Panel Installation
- Financing Assistance
- Consultation
- Cleaning and Maintenance
Helio Solar Power, LLC.
- Informative Resources
- Prompt Service Delivery
- Free Quotes
- Reliable Customer Support
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Financing Assistance
- Skilled Repairs
- Panel Installation
- Battery Storage
- Solar Carports
- Cleaning and Maintenance
Solar city stl
- Free Quotes
- Informative Resources
- Reliable Customer Support
- Limited information available on website
Services Offered
- Panel Installation
- Battery Storage
- Cleaning and Maintenance
- Financing Assistance
- Consultation
- Permit Assistance
Pyramid Electrical Contractors, Inc.
- Limited information available on website
Services Offered
- Cleaning and Maintenance
- Skilled Repairs
- Panel Installation
Solar Luxury LLC
- Reliable Customer Support
- Free Quotes
- Limited information available on website
Services Offered
- Skilled Repairs
- Panel Installation
- System Decommissioning
- Off-Grid Solar Systems
- Consultation
Sustainable Solar
- Informative Resources
- Reliable Customer Support
- Clear Pricing Policy
- Free Quotes
- Limited information available on website
Services Offered
- System Decommissioning
- Grid-Tied Solar System
- Financing Assistance
- Panel Installation
- Off-Grid Solar Systems
- Battery Storage
- Permit Assistance
- Skilled Repairs
BKJ Solar
- Free Quotes
- Informative Resources
- 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
- Consultation
- Panel Installation
Purelight Power of St. Louis
- Reliable Customer Support
- Clear Pricing Policy
- Informative Resources
- Free Quotes
- Limited information available on website
Services Offered
- Consultation
- Permit Assistance
- Panel Installation
- Grid-Tied Solar System
- Financing Assistance
five stars electric and solar LLC
- Limited information available on website
Services Offered
- Panel Installation
Methodology: How We Ranked the Best Solar Companies in Alton
EcoWatch's solar experts analyzed each solar company in Alton 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 Alton
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 Alton
The cost of installing solar panels has dropped greatly over the past few years, but it’s still a significant investment for most homeowners.There are a few factors you should consider when determining the overall cost and how much you can save, including:
- Incentives: Along with the federal Solar Investment Tax Credit (ITC), which lets you receive a tax credit curretnly worth 0 of your overall installation cost, your 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 $15,000 over 20 years with your solar panels, too.
- How much power your household needs: If your family regularly uses a lot of energy, you'll see more savings from going solar.
- Your income and budget: This determines what model of solar panels you can purchase.
- How much sunlight your roof gets: If your roof gets limited direct sunlight, your solar panel system won’t be able to make as much energy, which will give you lower savings on energy bills than a roof that gets plenty of sunlight.
Though a solar panel system costs a good chunk of money upfront, it can save you thousands of dollars over time. The question of how much, though, depends on a number of factors, including the size of your solar panel system and your local electricity rates.
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For an estimate of both how much you could save and impact the environment by installing solar panels, you can try out the calculator below. You can also view our solar panel cost guide for Alton, IL.
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Solar Incentives in Alton
Adopting solar power has many wonderful benefits. Not only can it help protect the planet, but you can also save some money on your installation with various government incentives.When you install a solar panel system on your house, you become eligible to claim the federal tax credit, or ITC. This credit currently lets you reduce your tax bill by 0 of the cost of your solar panels. Additionally, there may often be some local incentives that you can use to further cut back on the cost of solar of solar panels. Our article on solar incentives goes over more detailed information on the incentives you can find in Alton.
Environmental Impact of Switching to Solar in Alton
Going solar can have a meaningful effect on the environment.But how much can switching to solar actually affect the environment? In a city like Alton where energy use is rather high, going solar is a good plan for people who care about the planet.Since solar panels don’t release CO2 emissions into the atmosphere when generating electricity, they’re a good swap for nonrenewable energy sources. In fact, you could lower your carbon dioxide emissions by about 100 pounds each year. For those who are concerned about the environment, the upfront cost of solar is a small price to pay for reducing your carbon footprint.
Best Solar Financing
Blue Raven Solar
- Industry-leading in-house financing
- Competitive pricing
- Excellent reputation
- Doesn't offer solar batteries
Best for Leasing
Sunrun
- Expansive service area
- Many financing options
- Some reported issues with customer service
- Some reported issues with door-to-door sales
EcoWatch's Alton, IL Solar Company Rankings FAQs
Which solar power company is the best near me?
The best local solar company in Alton is Astrawatt Solar, with a rating of 5.00 stars.
What are the advantages and disadvantages of solar power?
A few of the biggest pros are that it reduces 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 be an eyesore.
How long does it take to see a return on your investment after installing solar panels?
The average payback period for solar panel installation is about 16.3 years, but the exact period is influenced by the cost of electricity where you are, incentives and net metering programs.
How much solar panel capacity do I need for my house?
Solar panel capacity is the amount of energy the panels can create under ideal conditions (a sunny day around noon). The average household has to get between 20 and 35 panels to cover their typical energy usage.
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.