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5 Best Solar Companies in Wisconsin (2024 Guide)

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Author Icon Written by Tamara Jude Updated 04/17/2024

Wisconsin may not be the first place that comes to mind when you think of sunny skies, but many homeowners in the state have found value investing in clean energy. Wisconsin offers competitively priced solar energy systems and several incentives to make the conversion process more affordable.

Our team has spent numerous hours researching the best solar companies available. We analyzed warranties and product specifications, secret-shopped at various providers, interviewed industry experts, and conducted homeowner surveys. These are the solar panel companies we most recommend for The Badger State.

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The Best Solar Companies in Wisconsin

SunPower: Best High-Efficiency System
Tesla: Best Solar Tech
All Energy Solar: Best Solar Tech 
LGCY Power: Best Solar Consultation

Our Top Picks for Solar Panels in Wisconsin


Best High-Efficiency System

Pros and Cons

Pros Includes a comprehensive 25-year warranty on all system components Creates fully custom, in-house solar energy systems Offers solar batteries and electric vehicle (EV) chargers as add-ons Cons More expensive than other providers, according to customer reviews Limits customization to only associated brands, namely Maxeon Limits service availability by ZIP code

Why We Chose SunPower

SunPower creates some of the best-performing and highest-quality solar panels. The company uses Maxeon’s solar panels, which easily exceed 25% efficiency. SunPower pairs these panels with other in-house solar components to create a system with all parts optimized to work together.

According to our customer review analysis, SunPower costs more than other solar companies. However, investing in high-quality solar panels yields better long-term savings due to improved system performance and longevity.

Warranty and Financing

SunPower includes a 25-year warranty covering all system components and workmanship, as well as a 92% power output production guarantee.

Financing Options
✔ Full purchase
✔ Loan
✔ Lease
✔ Power purchase agreement (PPA)

Reputation and Awards

SunPower has provided high-efficiency solar panels, components, and batteries since 1985. The company has garnered an excellent reputation throughout this long history. It received PV Magazine’s 2019 Sustainability Award and Good Housekeeping’s 2022 Home Renovation Award in the Biggest Energy Savers category for its SunVault energy storage system.

SunPower is also accredited by the Better Business Bureau (BBB) and holds an A+ rating from the organization. We noticed that many customers praised SunPower’s high-performing systems and resulting energy savings. However, common complaints noted high prices and difficult communication.

Learn more: SunPower Review

Tesla Solar

Best Solar Tech

Pros and Cons

Pros Provides transparent online pricing, unlike other providers Offers its industry-leading Tesla Powerwall battery with all installations Creates unique, high-end solar roofs using innovative solar shingle technology Cons Limits solar loan options by ZIP code Customer reviews mention challenges with scheduling repairs Limits customization by offering only a few system size options

Why We Chose Tesla

Tesla offers high-tech solar energy products. The company provides solar roofing and its popular solar battery, the Tesla Powerwall. We also like Tesla’s detailed website, which lets you learn more about solar panels and get a quote without speaking to a sales representative. Most solar companies require a consultation before revealing any pricing.

Warranty and Financing

Tesla includes a 10-year warranty for product and workmanship and a 25-year performance warranty.

Financing Options
✔ Full purchase
✔ Loan (in select areas)

Reputation and Awards

Tesla holds an A+ rating from the BBB, though it doesn’t have accreditation. Customer reviews praise the high performance and quality of Tesla’s technology. Other reviews mention difficulty scheduling and receiving repair services.

Learn more: Tesla Solar Review

All Energy Solar Best Full-Service Installer
Pros and Cons: What Makes Them Different?
Pros Full-service solar installer with roofing and building contractor licenses NABCEP-certified solar panel installer Extensive catalog of top-selling solar panel brands Cons Customers noted higher-than-average pricing for its solar equipment Roofing services only available within 80 miles of Saint Paul, Minnesota Varying manufacturer and performance coverage
Why We Chose All Energy Solar

All Energy Solar offers full-service installation with its in-house team, plus general electrical and solar-specific roofing services. The company handles all aspects of the installation process, including assisting customers with applying for local solar incentives. All Energy Solar holds certification with the North American Board of Certified Energy Practitioners (NABCEP), one of the most respected certifications in the solar industry

All Energy Solar offers Minnesota homeowners a one-stop shop for solar and home services. The company can even update your roof before installing solar panels, eliminating the need for additional contractors.

Warranty and Financing

All Energy Solar offers 25- to 30-year production warranties and varying manufacturer warranties, depending on the solar equipment. Workmanship warranties also vary depending on the equipment.

Financing Options
✔ Full purchase
✔ Loan

Reputation and Awards

All Energy Solar was founded in 2009 by brothers Michael and Brian Allen. Since then, the family business has grown to serve 50 states for commercial projects and six states for residential installations. 

The company holds an A+ rating with the BBB and is accredited. We noted that customer reviews praised All Energy’s excellent customer service and guided installation process. We found a few reviewers who were displeased with their delayed installations.

LGCY Power

Best Solar Consultation

Pros and Cons

Pros Offers a hands-on, transparent, and guided installation process Provides various online resources, such as updated blogs Partners with Sunrun for more extensive service options Cons Varies its warranties by product Customer reviews mention communication issues Has less experience than other providers on this list

Why We Chose LGCY Power

LGCY Power has a thorough consultation process. It focuses on hands-on experience and transparency, assigning a dedicated energy consultant to guide you through installation. It also provides a team to assist with solar incentives, helping you to lower your overall installation costs.

Because LGCY is a Sunrun-certified partner, it offers various high-quality solar panels, inverters, and solar batteries. The company also offers comprehensive system maintenance and 24-hour monitoring.

Warranty and Financing

LGCY includes various product, inverter, and workmanship warranties, but each warranty’s length and coverage varies by product.

Financing Options
✔ Full purchase
✔ Loan
✔ Lease
✔ PPA (power purchase agreement)

Reputation and Awards

LGCY Power holds an A rating on the BBB and is accredited by the organization. We found that customers praised the company’s transparency and informed consultants. However, other customers mentioned communication issues with customer support.

LGCY ranked 17th on Inc. Magazine’s 2023 list of 5000 most successful companies for the Rocky Mountain region. The company also ranked in 2019, 2021, and 2022.

What Are the Available Solar Incentives in Wisconsin?

Wisconsin offers several tax incentives and rebates to make solar more affordable and further reduce your electricity bills. Our list details some of the state’s most significant incentives, but we recommend checking the Database of State Incentives for Renewables and Efficiency (DSIRE) for more localized, city-specific options. 

Federal Solar Tax Credit

Net Metering in Wisconsin

Other State Solar Rebates

All Wisconsin residents qualify for the federal tax credit. This program allows you to claim 30% of your solar panel costs on your federal taxes. This also applies to stand-alone solar battery installations. The federal tax credit is not a rebate or cash payment. Instead, it helps to reduce or eliminate any owed taxes at tax time.

Wisconsin’s net-metering program is backed by the Public Service Commission of Wisconsin. This program allows you to send excess energy produced by your system back to the power grid in exchange for credits on your utility bills. Terms vary based on how much power your solar panels produce and your specific utility company’s rate. Xcel Energy provides one of the most extensive net metering programs in the state.

Wisconsin legislation also offers the following incentives to reduce your up-front costs. 

  • Focus on Energy Home Solar Rebate: Wisconsin’s Focus on Energy Program provides residential solar customers with cash rebates for installing solar panels. It awards approximately $500 to Wisconsin homeowners in populated areas and up to $1,000 to rural residents.
  • Solar Energy System Property Tax Exemption: Installing solar panels increases your home value. This would typically raise your property taxes, but Wisconsin’s property tax exemption prevents this.
  • Renewable Energy State Sales Tax Exemption: Wisconsin imposes a 5% sales tax on all purchases. However, the state’s solar sales tax exemption exempts any qualifying solar equipment from this tax. It applies to photovoltaic (PV) cells, modules, arrays, and any tracking equipment that maintains the system’s orientation to the sun.

What Should You Look For in a Solar Company?

Finding a reliable and reputable solar installer is essential, but there’s a lot of information to sift through. Consider the following factors to help you narrow down your choices as you compare solar companies.

Solar Services

Some companies only offer solar panel installation, while others have more comprehensive services that give you more value for your money. For example, some providers also install solar batteries and electric vehicle (EV) chargers, while others offer system monitoring after installation. These extra services show the company is committed to treating your solar investment as a long-term project. 


We recommend looking for solar companies with 25-year warranties on equipment and workmanship. Solar panels last 25 years on average, so this ensures coverage throughout their lifetime. Some companies also provide power performance guarantees that promise a certain level of output for a set time frame.

Payment Options

Most companies offer at least two solar financing options. Up-front cash payments and solar loans offer the best return on investment (ROI). These financing options grant you system ownership and qualify you for federal and state solar incentives.

Solar leases and power purchase agreements (PPAs) offer the least financial advantages because the solar company remains the system owner. Though you’ll reduce up-front costs and save on electric bills, you can’t qualify for solar rebates or tax incentives and won’t increase your property value. We recommend considering cash payments or loans to reap the most solar benefits. 

Customer Support

A solar company should offer easy ways to get in touch, whether for emergency repairs or routine cleaning. We recommend seeking out companies that provide customer support via phone, email, and an online service request form. A company that offers educational materials, such as an online blog, is a sign that it cares about keeping its customers knowledgeable and prepared for the ongoing support a solar panel system requires.

How To Get a Solar Quote in Wisconsin

It’s easy to get a solar quote in Wisconsin by following the steps below. This process typically only takes a few minutes.

  1. Contact the solar company: Visit the solar installation company’s website and fill out its online quote form or call the customer support team by phone. When we called solar companies for sample quotes, we spoke with representatives who verified we were eligible for solar and that the installer serviced our area. You’ll need to provide your address for this confirmation. After speaking with a representative, you’ll schedule an in-person or virtual consultation.
  2. Assess your energy needs: During your consultation, you’ll review your average energy usage and determine the right system for your home. You’ll need your most current energy bill for this step. During our shopping experiences, we found that some companies ask for multiple months of bills to check for seasonal fluctuations. We recommend having at least three months of statements handy for your consultation.  
  3. Review your home design and roof space: The representative will check your roof space to determine your system size. They’ll then assess your roof condition and recommend repairs and updates. Virtual consultations use satellite imaging to assess your home design. 
  4. Build your project: You’ll receive a final, itemized quote with a detailed inventory of all the required equipment. If available, you can add solar batteries or electric vehicle chargers to your system. Review your quote for all pricing and warranty information. You’ll also talk through available financing options and local solar incentives during this step.

Our Conclusion

We recommend SunPower for Wisconsin homeowners. The company offers one of the most efficient solar systems, guaranteeing long-term performance and energy savings. It also uses in-house components, creating a streamlined system with each part designed to work together.

We suggest getting quotes from at least three providers before choosing. This will help you compare each provider’s products, warranties, and additional services.

Other Wisconsin Home Service Resources

FAQ About Solar Companies in WI

Is solar in Wisconsin worth it?

Yes, going solar in Wisconsin is worth it. The state has clear access to sunlight, numerous reputable solar installers, and several incentives to reduce installation costs.

Does hail damage solar panels?

Hail does not typically cause severe damage to solar panels. Most solar panel manufacturers design their products to withstand the elements in all weather conditions. However, more powerful storms may cause chipping or cracking, so we recommend working with a solar installer that offers maintenance services. 

Does solar increase home value in Wisconsin?

Yes, solar panels increase home value in Wisconsin by an average of $15,000, according to a study conducted by the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab)

What happens when solar panels are covered in snow?

Light snow has little effect on solar panels, given that wind can blow it off and light can still reach the panel. However, heavy snow that accumulates on panels can prevent them from generating power. 

Our Rating Methodology

We are committed to providing comprehensive and unbiased reviews to our readers. After over a thousand hours of research on solar companies, interviews with experts, and common customer needs, we’ve created a detailed rating system for solar providers based on six factors:

  • Solar equipment, installation, and services (25%)
  • Warranty and performance guarantees (25%)
  • Brand reputation and certifications (15%)
  • Financing options (15%)
  • Experience (10%)
  • Availability (10%)

Total scores are divided by 20 for a final 5-point rating scale.

To share feedback or ask a question about this article, send a note to our Reviews team at reviews@thisoldhousereviews.com.