7 Best Solar Companies in Sparta, WI (2025 Reviews)

We analyzed over 1500 solar companies in the nation,
and have selected the top 7 in Sparta based on:

  • Customer review scores
  • Service area for Sparta, WI
  • Company policies and services offered
  • Accreditations and certifications

Average Sparta homeowner saves $1,598/year with solar panels

By EcoWatch Local Advisors

Data Analysis: James Savino

Updated January 24, 2025

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 Sparta

Thinking of going solar but still deciding on which solar company would be best for your needs? Although it can be hard to choose a solar company, the effort will pay off because going solar has many fantastic benefits. Thanks to government support encouraging a growing clean energy market, homeowners in Sparta have access to some of the best solar companies in the country.


If you’re considering going solar, the first step to take is to find the best solar companies in Sparta and compare quotes. That’s why we did the hard work and put together a list of the best solar companies for you.Want to see the cost of installing a solar system on your roof? Click "get quote" below to get a free, no-obligation quote from a top-rated Sparta solar installer.

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EcoWatch Rankings for Solar Companies in Sparta

Best Local Installer
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EcoWatch Rating

4.9/5

Olson Solar Energy

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

Services Offered

  • Service icon Panel Installation
  • Service icon Consultation
  • Service icon Grid-Tied Solar System

Website: http://www.olsonsolarenergy.com/
Address: 1447 Oak Forest Dr, Onalaska, WI 54650
Phone: 6087802347
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Ethos Green Power Cooperative

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

Services Offered

  • Service icon Consultation
  • Service icon Financing Assistance
  • Service icon Battery Storage
  • Service icon Panel Installation

Website: http://ethos.green/
Address: 729 N Main St, Viroqua, WI 54665
Phone: 6086373797
Outstanding Local Installer
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EcoWatch Rating

3.0/5

Champion Solar

  • 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 Consultation
  • Service icon Financing Assistance
  • Service icon Cleaning and Maintenance
  • Service icon Battery Storage
  • Service icon Skilled Repairs
  • Service icon Permit Assistance
  • Service icon Panel Installation

Website: http://www.championsolar.com/
Address: 7010 US-61, Minnesota City, MN 55959
Phone: 5073120190
Outstanding Local Installer
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EcoWatch Rating

3.0/5

ALL SKY ENERGY, LLC.

  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Grid-Tied Solar System
  • Service icon Off-Grid Solar Systems
  • Service icon Battery Storage

Website: http://www.allskyenergy.com/
Address: S2810 County Hwy BD, Baraboo, WI 53913
Phone: 6083560830
Outstanding Local Installer
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EcoWatch Rating

3.0/5

Blake Electric, Inc.

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

Services Offered

  • Service icon Panel Installation
  • Service icon Cleaning and Maintenance
  • Service icon Permit Assistance
  • Service icon Consultation

Website: http://www.blakeelectricinc.com/
Address: 3 W Main St, Waukon, IA 52172
Phone: 5635683686
Outstanding Local Installer
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EcoWatch Rating

3.0/5

Solar Connection Inc.

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

Services Offered

  • Service icon Consultation
  • Service icon Panel Installation
  • Service icon Permit Assistance

Website: https://solarconnectioninc.com/
Address: 920 10th Ave N, Onalaska, WI 54650
Phone: 6087814683
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Midwest Solars

  • 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 Battery Storage
  • Service icon Panel Installation

Website: https://midwestsolars.com/
Address: 910 Countryside Pkwy, Mondovi, WI 54755
Phone: 3214469029

Methodology: How We Ranked the Best Solar Companies in Sparta

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


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 Sparta

We know that for many homeowners, the decision to invest in solar hinges on installation costs.The installation cost is just one important factor you should bear in mind when looking into installing solar panels. How much it'll cost and how much you can save depend on things such as:

  • The amount of sunlight your roof gets: This, plus the configuration of your roof, affects affect how much power your solar panels can produce.
  • The model of solar panels you can afford: This hinges on how much you’re willing to spend upfront.
  • Your current electric bills: Solar panels can greatly lower, or entirely eliminate, your utility bills. In Sparta, you can save an average of $1,104 a month.
  • Electricity consumption: The average household in Sparta uses a decent amount of, and consequently may save on their energy bills.

As a result of solar panels decreasing in cost as well as local and federal solar incentives, they are a worthwhile investment for most homeowners.

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Solar Incentives in Sparta

Although solar power is typically a big investment, it can save you a significant amount of money over many years because of smaller power bills and 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 lowers your tax bill by 0 of the cost of your solar panels. Additionally, there are often some regional incentives that you can use to further save. For detailed information about local incentives, see our article on solar incentives.

Environmental Impact of Switching to Solar in Sparta

One of the most compelling reasons to tap into solar energy is to decrease your dependence on traditional energy sources like burning fossil fuels, which are damaging for the environment.But you may be wondering – how much exactly can you help the planet by using solar power? If your household uses lots of energy, you can have an even greater impact on the planet by switching to solar energy.In Sparta, the average homeowner can lower their carbon footprint by 90 pounds a year after going solar. For those who are worried about the environment, the upfront cost of solar is a small price to pay for the offset carbon emissions.

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EcoWatch's Sparta, WI Solar Company Rankings FAQs

Which solar panel installer is the best in Sparta?

The best local solar company in Sparta is Olson Solar Energy, with a rating of 4.90 stars.

What are the advantages and disadvantages of solar power?

A few of the biggest pros are that it lowers your power bills, it’s environmentally friendly, and it provides 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, there is a high upfront cost and solar panels aren’t always aesthetically pleasing.

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 collection of factors like how much you pay for electricity and how much direct sunlight your roof gets.

How often do solar panels need to be replaced?

Although the average lifespan of solar panels is 25 to 30 years, that doesn't mean they are completely unusable. What this means is their energy production will have decreased by about 0.8% each year since installing them. You can replace them after having them for that long or you can continue to use 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.