15 Best Solar Companies in Ontario, CA (2025 Reviews)
We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in Ontario based on:
Customer review scores- Service area for Ontario, CA
- Company policies and services offered
- Accreditations and certifications
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Average Ontario homeowner saves $2,092/year with solar panels
Why you can trust EcoWatch
Best Solar Companies in Ontario
If you’re a homeowner looking to take advantage of the solar incentives in Ontario, it can be difficult to narrow down which installer to choose. But, the hard work is worth it since adopting solar energy is often a great choice. On average, you can save $25,000 over 20 years when you use solar power. And because solar panels last about 25 to 30 years, you can save will be even higher overall.
In this article, we’ll help you narrow down the best companies in your area.To help you find out if solar panels are something you should get for your home, you can get a free, no-obligation quote from one of the best solar companies in Ontario by clicking the button below.
Best Regional Coverage
Momentum Solar
- Great warranty coverage
- Representatives are experts on local policies
- Concierge service ensures steady communication
- Slightly limited service offerings
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 Ontario
SolarRepair
Clear Pricing Policy- Reliable Customer Support
- Prompt Service Delivery
- Free Quotes
- Informative Resources
Limited information available on website
Services Offered
Financing Assistance- Panel Installation
- Solar Panel Upgrades
- Battery Storage
- Skilled Repairs
- Cleaning and Maintenance
SunGuide Solar Inc
- Free Quotes
- Informative Resources
- Limited information available on website
Services Offered
- Consultation
- Panel Installation
SYNRG Solar - Home Energy Solutions
- Clear Pricing Policy
- Reliable Customer Support
- Limited information available on website
Services Offered
- Panel Installation
- Consultation
Altadena Energy & Solar
- Clear Pricing Policy
- Reliable Customer Support
- Free Quotes
- Informative Resources
- Limited information available on website
Services Offered
- Permit Assistance
- Panel Installation
- Battery Storage
SunSolar U.S.
- Free Quotes
- Reliable Customer Support
- Informative Resources
- Prompt Service Delivery
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Permit Assistance
- Solar Carports
- Battery Storage
- Financing Assistance
- Consultation
- Panel Installation
REPOWER OC
- Reliable Customer Support
- Free Quotes
- Informative Resources
- Clear Pricing Policy
- Prompt Service Delivery
- Limited information available on website
Services Offered
- Financing Assistance
- Panel Installation
Renew Earth Solar
- Limited information available on website
Services Offered
- Battery Storage
- Consultation
- Grid-Tied Solar System
- Panel Installation
Solar Source
- Informative Resources
- Clear Pricing Policy
- Free Quotes
- Reliable Customer Support
- Family-Operated Business
- Limited information available on website
Services Offered
- Permit Assistance
- Panel Installation
- Financing Assistance
Green Integrations and Management Inc.
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Panel Installation
- Battery Storage
Shaw Energy Consulting LLC
- Reliable Customer Support
- Informative Resources
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Panel Installation
- Consultation
- Battery Storage
Powerfull Solar, Inc
- Informative Resources
- Free Quotes
- Prompt Service Delivery
- Reliable Customer Support
- Limited information available on website
Services Offered
- Financing Assistance
- Consultation
- Solar Carports
- Cleaning and Maintenance
- Permit Assistance
- Panel Installation
AmeriGreen Solar
- Reliable Customer Support
- Prompt Service Delivery
- Free Quotes
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Panel Installation
- Financing Assistance
- Consultation
ProSolar California
- Informative Resources
- Free Quotes
- Reliable Customer Support
- Limited information available on website
Services Offered
- Panel Installation
- Tesla Powerwall
- Financing Assistance
- Battery Storage
Voltaic Construction, LLC
- Free Quotes
- Limited information available on website
Services Offered
- Panel Installation
Helios Energy Global
- Limited information available on website
Services Offered
- Panel Installation
- Battery Storage
Methodology: How We Ranked the Best Solar Companies in Ontario
EcoWatch's solar experts analyzed each solar company in Ontario 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 Ontario
Below are some the criteria we examined specifically for California 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 Ontario
Even though solar panels can save you a decent chunk of change on energy over time, it’s necessary to know the upfront costs.The cost and possible savings vary depending on a few key factors such as:
- How much sunlight your roof gets: If your rooftop doesn’t get a lot of direct sunlight, your solar panel system won’t be able to generate as much energy, which will give you lower savings on energy bills than a roof that gets plenty of sunlight.
- Your power bills: This will impact how much you can save. In Ontario, the average resident can save about $1,200 a year on their electricity bills.
- Incentives: The federal solar investment tax credit currently allows you to decrease your taxes by 0 of the project cost. Your state may also have various incentives that you can take advantage of. In addition, you can save about $25,000 over 20 years on your utility bills, before factoring in incentives.
- The kind of solar panels you’re thinking of getting: Higher-efficiency panels are more costly, so that will shape your budget for your solar project.
Although a solar panel system costs a decent chunk of money upfront, it can save you much more over the lifespan of your panels. The question of how much, though, depends on several factors, including the amount of daily direct sunlight available and your local electricity rates.
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Solar Incentives in Ontario
Although installing solar panels is typically a $15,000 to $25,000 investment, it can save you a significant amount of money over the lifespan of your solar panels due to smaller utility bills and government incentives.When you install a solar panel system on your house, you can take advatage of the federal tax credit, or ITC. This credit currently lets you lower your tax bill by 0 of the cost of your solar panels. In addition, there are often some regional incentives that you can use to further save. In our article on solar incentives, you can see the incentives you qualify for in your area.
Environmental Impact of Switching to Solar in Ontario
There are lots of reasons to make the switch to solar energy, like saving some money on utility bills and helping to lower your carbon footprint.Something many people might be thinking about is how much can they really help the environment by going solar anyway? In Ontario, where the energy generation could be cleaner, going solar can have a big effect on the Earth since solar power is an abundant source of clean energy.Since solar panels don’t release CO2 emissions into the atmosphere when generating electricity, they’re a good substitute for traditional energy sources. In fact, you could be looking at reducing your carbon dioxide emissions by about 50 pounds each year. The benefits of solar power are plentiful — just like solar power is! That's why so many homeowners have been happy with committing to solar.
Best Regional Coverage
Momentum Solar
- Great warranty coverage
- Representatives are experts on local policies
- Concierge service ensures steady communication
- Slightly limited service offerings
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 Ontario, CA Solar Company Rankings FAQs
What is the best solar panel installation company in Ontario?
In Ontario, SolarRepair is the most reputable local solar company. Our team of experts rates it 5.00 stars, so it's a great choice if you're looking to install solar panels on your roof.
What is the negative environmental impact of making solar panels?
Solar panels can be bad for the environment when manufacturers use toxic chemicals in the construction. Chemicals can make solar panels difficult to recycle safely once they’ve reached the end of their lifespan. Making solar panels uses a lot of energy as well. The energy payback period is about 1 to 4 years.
How long does it take for solar to pay for itself?
The average payback period for solar panel installation is about 9.3 years, but the exact period varies by the cost of electricity where you are, incentives and net metering programs.
What is the efficiency of solar panels?
Solar panel efficiency is the amount of energy from the sun that is converted into electricity. Most panels today have an efficiency rating between 15 and 20%. If your panels are more efficient, you'll need less of them for your home's energy needs.
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.