15 Best Solar Companies in Janesville, WI (2023 Reviews)
We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in Janesville based on:
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Customer review scores
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Service area for Janesville, WI
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Company policies and services offered
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Accreditations and certifications
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Average Janesville homeowner saves $1,618/year with solar panels
Updated May 04, 2023
Why you can trust EcoWatch
Best Solar Companies in Janesville
As a homeowner in Janesville, you may be planning on switching to solar energy and wondering about the best solar companies in your area. Solar could be a great choice since it comes with a lot of benefits. Installation costs can be high, but adopting solar will save you money on your utility bills over time. In fact, you can look forward to saving about $19,000 over 20 years.
To help you sort through the large amount of Janesville solar installers, we've narrowed in on a list of the top ones. We advise shopping around for quite a few quotes and comparing them to find the best installer for your home. To get free, no-obligation quotes from pre-screened solar companies in Janesville, click the link below.
Best Social Impact
Palmetto Solar
- Expansive service area
- Makes charitable contributions
- Certified B Corp
- No leases or PPAs
- Quality of installation may vary by location
EcoWatch Rankings for Solar Companies in Janesville

SunPower
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Most efficient panels on the market
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National coverage
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Cradle to Cradle sustainability certification
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Great warranty coverage
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Expensive
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Customer service varies by local dealer
Services Offered
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Solar Panels
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Solar Batteries
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EV Chargers
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System Monitoring

ilumen Solar
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Recognized Excellence
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Outstanding Customer Support
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Free Quotes
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Clear Pricing Policy
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Informative Resources
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Limited information available on website
Services Offered
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Energy storage solutions
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Business installations
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Tailored solutions
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Home installations
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Skilled repairs
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Expert panel installation
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Integrated roofing

Sunrun
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Expansive service area
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Many financing options
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Some reported issues with customer service
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Some reported issues with door-to-door sales
Services Offered
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Solar Panels
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Solar Batteries
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EV Chargers
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Energy-Efficiency Upgrades

Palmetto Solar
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Expansive service area
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Makes charitable contributions
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Certified B Corp
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No leases or PPAs
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Quality of installation may vary by location
Services Offered
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Solar Panels
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Solar Batteries
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Energy-Efficiency Upgrades
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Maintenance & Repairs

Tesla Energy
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Price-match guarantee
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Sleek, efficient, and durable solar panels
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Best solar battery on the market
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Some reported issues with customer service
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Customer service varies by local dealer
Services Offered
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Solar Panels
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Solar Batteries
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EV Chargers
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Solar Roof Shingles
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System Monitoring

Janesville Home & Solar
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Free Quotes
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Outstanding Customer Support
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Clear Pricing Policy
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Informative Resources
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Limited information available on website
Services Offered
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Expert panel installation
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Tailored solutions
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Home installations
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Integrated roofing

Agsun Corporation
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Family-Operated Business
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Prompt Service Delivery
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Clear Pricing Policy
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Limited information available on website
Services Offered
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Home installations
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Tailored solutions
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Business installations

Ameresco Inc.
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Outstanding Customer Support
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Free Quotes
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Recognized Excellence
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Informative Resources
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Clear Pricing Policy
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Limited information available on website
Services Offered
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Integrated roofing
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Business installations
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Expert panel installation
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Home installations
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Energy storage solutions
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Tailored solutions

Rock Energy Cooperative
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Informative Resources
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Outstanding Customer Support
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Limited information available on website
Services Offered
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Tailored solutions
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Home installations
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Energy storage solutions
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Business installations

Synergy Renewable Systems, LLC
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Free Quotes
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Informative Resources
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Clear Pricing Policy
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Outstanding Customer Support
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Limited information available on website
Services Offered
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Energy storage solutions
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Business installations
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Expert panel installation
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Home installations
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Tailored solutions

GreenCastle Energy
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Outstanding Customer Support
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Clear Pricing Policy
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Free Quotes
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Informative Resources
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Limited information available on website
Services Offered
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Energy storage solutions
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Integrated roofing
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Expert panel installation
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Tailored solutions
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Business installations
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Home installations

Convergence Energy, LLC
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Outstanding Customer Support
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Clear Pricing Policy
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Informative Resources
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Limited information available on website
Services Offered
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Energy storage solutions
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Tailored solutions
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Home installations

TruHome Pros Solar
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Free Quotes
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Clear Pricing Policy
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Outstanding Customer Support
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Informative Resources
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Limited information available on website
Services Offered
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Tailored solutions
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Expert panel installation
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Integrated roofing
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Home installations
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Business installations
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End-to-end services
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Energy storage solutions

All Energy Solar
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Clear Pricing Policy
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Informative Resources
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Free Quotes
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Outstanding Customer Support
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Limited information available on website
Services Offered
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Tailored solutions
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Energy storage solutions
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Expert panel installation
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Home installations
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Integrated roofing
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End-to-end services
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Business installations

Arch Solar
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Informative Resources
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Free Quotes
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Clear Pricing Policy
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Outstanding Customer Support
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Limited information available on website
Services Offered
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Tailored solutions
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Energy storage solutions
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Business installations
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Expert panel installation
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Home installations
Methodology: How We Ranked the Best Solar Companies in Janesville
EcoWatch's solar experts analyzed each solar company in Janesville 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 Janesville
Below are some the criteria we examined specifically for Wisconsin 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 Janesville
We get that for lots of homeowners, the decision to invest in solar hinges on installation costs. The installation cost is just one important factor you should keep in mind when looking into getting solar panels. How much it'll cost and how much you can save depend on things such as:
- Incentives: The federal solar investment tax credit, which everyone qualifies for, lets you deduct 30% of the cost of your solar system installation from your federal taxes. Plus, not including incentives, you can save about $19,000 over 20 years on your energy bills.
- The cost of electricity in your area: If your local electricity rates are especially high, there's a good chance you'll see a higher return on your investment in a solar panel system. In Janesville, you can save an average of $122 a month on your electricity bills.
- The type of solar panels you're planning on getting: Some cost more, so that will shape your budget for your solar project.
- Electricity consumption: The average home in Janesville uses a decent amount of, and consequently may save on their energy bills.
Even though a solar panel system costs a decent chunk of money upfront, it can save you thousands of dollars over the lifespan of your panels. The question of how much, though, depends on several factors, such as the size of your solar panel system and your energy consumption.
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Solar Incentives in Janesville
Since solar power is a cleaner source of energy than traditional energy sources, there are some government incentives available to encourage people to make the switch. When you install a solar panel system on your home, you can claim the federal tax credit, or ITC. This credit currently lets you reduce your tax bill by 30% of the cost of your solar panels. In addition, there are often some local incentives that you can benefit from to further cut back on the cost of solar of solar panels. You can learn about the incentives you can use in our article on solar incentives
Environmental Impact of Switching to Solar in Janesville
There are many reasons to make the switch to solar energy, like saving on electricity bills and helping to lower your carbon footprint. You may be trying to figure out — how much does going solar do for the planet anyway? In a city like Janesville where energy use is rather high, making the switch to solar power is a great idea for those who are worried about the state of the planet. After you go solar, your carbon dioxide emissions can be lowered by about 100 pounds a year. If you care about the environment, you'll no doubt recognize that there are many good things about adopting solar power other than just saving money on bills. You can also help preserve the environment, which some would argue is priceless.
Best Social Impact
Palmetto Solar
- Expansive service area
- Makes charitable contributions
- Certified B Corp
- No leases or PPAs
- Quality of installation may vary by location
EcoWatch's Janesville, WI Solar Company Rankings FAQs
What is the most reputable solar panel installation company in Janesville?
In Janesville, WindSoleil Solar and Wind Energy Services is the best local solar company. Our team of experts rates it 5.00 stars, so it's a great choice if you're planning to add solar panels to your home.
What are the advantages and disadvantages of solar power?
The biggest advantages of solar power are that it can reduce or, for some, completely erase your electricity bills, improve the value of your home and lower your carbon footprint. The biggest disadvantages are that solar panels can be costly to install, you may not see as many savings if you don't use a lot of electricity and whether you can install solar panels depends on your roof configuration.
Are solar panels worth it?
Solar panels need a considerable upfront investment that usually costs at least ten thousand dollars, but whether or not solar panels are worth it depends on a variety of factors like the cost of electricity near you and the amount of direct sunlight your roof gets.
What are the different kinds of solar panels?
There are three main types of solar panels: monocrystalline, polycrystalline and thin-film. In regard to 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.