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4 Best Solar Companies in Montana (2024 Guide)

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Default Author Icon Written by Tamara Jude Updated 04/24/2024

Though Montana uses renewable energy sources such as hydroelectric power, its solar potential is underutilized. According to the Montana Department of Environmental Quality (DEQ), the state receives 26% more sunlight than the national average. This means Montana has excellent potential to bring solar energy savings to its residents. 

Our team invested more than 60 hours into finding the best solar installers throughout the state, plus regional and national providers serving the area. These are the best solar companies for Montana residents.

Compare Solar Panel Installers in Montana

Company Star Rating Warranties Payment Options Link
10-25 years Full purchase, loan GET QUOTE
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Montana’s Top Solar Energy Companies

Our Picks for Solar Panel Installation in Montana

Learn more: SunPower Review

Tesla Solar

Best Solar Tech

Pros and Cons

Pros Rooftop panels and solar roofing available Tesla Powerwall add-on available with every installation Online quote provides transparent pricing Cons Third-party installers used for all installations Solar loans offered in select areas Customer reviews note issues with scheduling service appointments

Why We Chose Tesla

Tesla is ideal for homeowners looking for high-tech solar solutions. Its patented solar roof combines the benefits of solar panels with the durability of traditional roofing. The company also offers its popular solar battery, the Tesla Powerwall.

While most solar companies limit pricing information on their websites, Tesla provides full, transparent pricing with every online quote. Its online system analyzes your home design and calculates your system size based on your average energy use. Homeowners can customize their quotes and increase system size with up to 10 Powerwall batteries.

Warranty and Financing

Tesla provides 10-year comprehensive warranty coverage for product and workmanship, plus a 25-year performance warranty.

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

Reputation and Awards

Tesla began developing solar technology inspired by its innovative automotive technology in 2003. It’s since released the Tesla solar roof, inverter, and Powerwall battery. 

Tesla is not accredited by the BBB but has an A+ rating. While reading customer reviews, we noticed that customers appreciated the rooftop panel technology and Powerwall performance but experienced issues scheduling service and repair appointments. 

Learn more: Tesla Solar Panels Review

OnSite Energy Best B Corp Montana Installer
Pros and Cons
Pros Certified B Corporation (B Corp) NABCEP-certified installers Tesla Powerwall-certified installer Cons Few solar services offered Limited financing details on website Product and performance warranties vary between products
Why We Chose Onsite Energy

As a certified B Corporation (B Corp), Onsite Energy makes its business decisions based on overall social and environmental impact. The company follows strict performance and accountability guidelines set by B. Labs Global. Onsite Energy takes a more conscientious approach to solar installations, ensuring its products positively impact the environment. 

The company offers grid-tied solar systems with high-efficiency solar panels. The company works with Tesla to offer its popular Powerwall battery. Onsite Energy offers full-service installations, handling every aspect of the process from design to installation.

Warranty and Financing

Onsite Energy offers 12–25 year manufacturer’s warranties (varies by product) and 15-year workmanship coverage. The company also includes production guarantees, but coverage length depends on the selected product. 

Financing Options
✔ Full purchase
✔ Loan

Reputation and Awards

Onsite Solar maintains an A+ rating with the BBB but is not accredited. The company has mostly positive reviews across multiple third-party sites. Customers appreciated its courteous staff, installation speed, and panel performance.

Independent Power Systems Best Regional Montana Installer
Pros and Cons
Pros Free roof assessment to determine panel compatibility Electrical services offered Rooftop, ground-mount, and off-grid installations Cons Communication issues during installations, per some reviews Limited solar product catalog Solar quote required for financing details
Why We Chose Independent Power Systems

Independent Power Systems (IPS) offers rooftop, ground-mount, and off-grid installations for Montana residents. As a SunPower Elite Dealer, the company provides high-efficiency Maxeon panels in its installations. The company offers several battery options from top manufacturers, such as SunPower, Enphase, and Fortress. 

Homeowners can also add EV chargers to their solar projects. The company offers electrical services through Windward Electric. Along with EV installations, the company offers heat pump and mini split installations, plus main and smart panel upgrades.

Warranty and Financing

IPS offers a 25-year equipment warranty and a 15-year workmanship warranty.

Financing Options
✔ Full purchase
✔ Loan
✔ Lease

Reputation and Awards

Independent Power Systems appeared on Solar Panel Word’s 2021 Top Solar Contractor list. The company made the ranking in 2012–2016 and 2018–2020. 

ISP has an A+ rating on the BBB but is not accredited. When reading online reviews, we learned that customers appreciated the company’s affordable system pricing and prompt repair servicing. However, some customers noted communication issues at the end of the installation process.

Are There Solar Incentives For Montana Homeowners?

Although Montana offers limited solar incentives, homeowners still have opportunities to save on solar system costs. With the federal tax credit, homeowners receive up to 30% off installation costs. This credit applies to your owed federal taxes helping reduce or eliminate your tax liability. The Renewable Energy Systems Exemption also provides additional tax relief for property taxes. Under this tax exemption, residents avoid the added property tax for 10 years. You benefit from the added home value of a solar system without the additional taxation. 

Montana’s net metering program allows homeowners to earn future utility bill credits by returning excess energy to the power grid. The Montana Public Service Commission (PSC) mandates the programs for all state utility companies and electric cooperatives. However, the kilowatt-hour (kWh) payout rate is not regulated, so they vary between companies. Homeowners should check with their utility company for program details and applications.

As you shop for solar installation companies, compare benefits such as solar services, financing options, and customer service. We’ve highlighted key company features to consider below.

Solar Services

An in-house or third-party team will complete your solar panel installation. In-house installers work directly for the company, providing better communication and high-quality installations. With third-party contractors, system installation could vary by project. In addition, you’ll have an additional point of contact during the process, making communication more difficult between all parties involved. 

Solar providers may offer solar services to support your solar panel performance, such as system monitoring or mobile apps. Additional services include home efficiency upgrades, energy monitoring equipment, or roofing services. Below is a list of optional services offered by solar providers:

  • Mobile app or web portal
  • Electrical services
  • Energy efficiency audits and upgrades
  • Home energy monitoring 
  • Roofing services 
  • Smart home device installations 
  • Solar system monitoring


Since solar panels last 25 years or longer, you’ll want warranty coverage that aligns with that estimated life span. Solar providers typically include several warranty types to protect your solar investment. Here’s an overview of common warranty coverage:

  • Manufacturer’s (or product) warranty: This warranty plan offers protection against any manufacturing defects or issues. 
  • Workmanship (or labor) warranty: This coverage protects your system when problems result from poor installation. 
  • Power performance guarantee:  This plan outlines the estimated linear performance of panels through the warranty length and offers replacement or repair options for panels that fall below these outlined levels.   

Solar power system warranties vary between providers and equipment manufacturers. Your provider may offer one of all of the above options. Our research found that higher-quality residential panels have longer warranty plans than cheaper solar panels.

Payment Options

Installers usually offer two or more solar financing options to accommodate different homeowners’ budgets. Some options, such as up-front payments and solar loans, offer added financial benefits such as qualification for solar incentives, rebates, and credits. We’ve highlighted the most common financing options solar panel companies offer:

  • Up-front (or cash) payments: Customers pay the full, up-front costs for solar panels and become the legal owner. 
  • Solar loans: Homeowners make monthly payments on system costs for a set timeframe but legally own the solar system. 
  • Solar leases: Homeowners rent the solar system from providers and pay monthly fees. 
  • Power purchase agreements (PPAs): The provider retains system ownership and charges homeowners for their monthly energy usage only. 

Cash payments and solar loans offer the most financial benefits, such as legal ownership. We recommend choosing one of these options over system leasing unless system ownership is not your priority.

Customer Support

Solar installers should offer multiple means of customer service communication. Check each company’s website for customer support hours and communication methods. Typical methods include mail, online form, phone, and online chat. During secret shopping, we discovered many online chats use live agents, automated messages, or a mixture of both. Also, check company reviews for any mentions of poor communication, customer service issues, or unfriendly representatives.

How To Get a Solar Quote in Montana

You should request solar quotes from multiple solar companies and compare costs, services, and warranty coverage. Below is a step-by-step guide covering the typical solar quotes process.

  1. Schedule a consultation: Visit each company’s website to begin the solar quote process. Many companies offer virtual or in-person consultations. Set aside at least two hours for each appointment. 
  2. Have your energy bill on hand: The consultant will review your energy bill to determine your average usage and solar electric system size. Although some companies require only the latest bill, others will request multiple electric bills to account for any usage fluctuations. 
  3. Assess your roof space: The company rep will check your roof in person or using satellite technology. During their inspection, they check for available roof space, nearby shading, or roof elements that may complicate the installation process. Depending on your solar panel type, you may need ample room to accommodate more solar panels. 
  4. Complete your system design: After completing the previous reviews, the solar installer will begin your system design. During this step, you select your preferred panel type and brand, the system’s components, and add battery storage or electric vehicle (EV) chargers. 
  5. Review each final quote: Your quote will include itemized details on all solar equipment, costs, labor charges, and warranty coverage. You’ll also see your financing options and estimated solar payback period. Gather your final quotes and compare them to find the best deals.

Our Conclusion

SunPower tops our list of the best Montana solar providers. The company offers high-efficiency solar systems designed for maximum energy production. Your system includes 25 years of comprehensive coverage plus a production guarantee for the next two decades. 

We recommend getting at least three free quotes from nearby solar providers to find the right fit for your home.

FAQ About Solar Companies in Montana

What are the benefits of solar in Montana?

Some benefits of going solar in Montana include long-term energy savings, reduced carbon footprint, and a home value boost. Montana offers solar incentives, such as net metering and property tax exemption, that provide additional savings for moving to solar energy. 

Does Montana have a solar tax credit?

No, Montana does not have a state-level solar state tax credit. Residents should apply for the federal solar tax credit instead to receive up to 30% off their solar system costs. 

How long does Montana’s solar property tax exemption last?

Homeowners receive 10 years of 100% exemption under Montana’s property tax exemption law. 

Does Montana have net metering?

Yes, Montana mandates net metering for all utility companies in the state. The program allows residents to earn bill credits for returning excess energy to the grid. Payout rates vary per company, so you should contact your utility company for full program details. 

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.

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