15 Best Solar Companies in Fullerton, CA (2024 Reviews)

We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in Fullerton based on:

  • Customer review scores
  • Service area for Fullerton, CA
  • Company policies and services offered
  • Accreditations and certifications

Average Fullerton homeowner saves $2,225/year with solar panels

By EcoWatch Local Advisors

Data Analysis: James Savino

Ranking Methodology: Karsten Neumeister

Updated May 20, 2024

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 Fullerton

Finding the best solar panel installation company for your home is a big decision, but it's one that can pay off big in Fullerton. Thanks to encouraging government support and incentives, homeowners in Fullerton have access to some of the best solar installers in the nation.


In this article, we’ll review the top Fullerton solar installers so you can find the best one for your home’s solar energy needs.If you’d like to get free, no-obligation quotes from the top Fullerton solar installers, you can click the button below to learn more.

Best Regional Coverage

Momentum Solar

★★★★★
4.5
  • Great warranty coverage
  • Representatives are experts on local policies
  • Concierge service ensures steady communication
  • Slightly limited service offerings

Best for Leasing

Sunrun

★★★★★
4.0
  • Expansive service area
  • Many financing options
  • Some reported issues with customer service
  • Some reported issues with door-to-door sales

Best Social Impact

Palmetto Solar

★★★★★
4.0
  • 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 Fullerton

Best Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

SunPower by Sun Solar-OC

  • 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 Battery Storage
  • Service icon Consultation
  • Service icon Cleaning and Maintenance

Website: https://sunpowerbysunsolaroc.com/
Address: 4085 E La Palma Ave Suite B, Anaheim Hills, CA 92807
Phone: 9497349695
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

SunPower by True Power Solar

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

Services Offered

  • Service icon Cleaning and Maintenance
  • Service icon Panel Installation

Website: http://www.truepowersolar.com/
Address: 201 Clark Ave, Pomona, CA 91767
Phone: 7146768888
Outstanding Local Installer
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EcoWatch Rating

4.4/5

SunPower by Sea Bright Solar

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

Services Offered

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

Website: https://seabrightsolar.com/
Address: 1785 Industrial Park Ave Building A, Redlands, CA 92374
Phone: 9093475451
Outstanding Local Installer
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EcoWatch Rating

3.0/5

Precis Solar

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

Services Offered

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

Website: http://www.precissolar.com/
Address: 36625 Kevin Rd STE 147, Wildomar, CA 92595
Phone: 9514762975
Outstanding Local Installer
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EcoWatch Rating

5.0/5

SunGuide Solar Inc

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

Services Offered

  • Service icon Consultation
  • Service icon Panel Installation

Website: http://www.mysunguide.com/
Address: 1057 E Imperial Hwy #307, Placentia, CA 92870
Phone: 6269414181
Outstanding Local Installer
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EcoWatch Rating

4.9/5

TENCO SOLAR

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

Services Offered

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

Website: https://tencosolar.net/
Address: 700 N Valley St Suite C, Anaheim, CA 92801
Phone: 8885076937
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.6/5

Nexus Energy Systems

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

Services Offered

  • Service icon Battery Storage
  • Service icon Cleaning and Maintenance
  • Service icon Skilled Repairs
  • Service icon Panel Installation
  • Service icon Tesla Powerwall

Website: http://nexussolar.net/
Address: 2530 E Cerritos Ave, Anaheim, CA 92806
Phone: 8052433345
Outstanding Local Installer
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EcoWatch Rating

4.6/5

Infinity Solar

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

Services Offered

  • Service icon Consultation
  • Service icon Tesla Powerwall
  • Service icon Panel Installation
  • Service icon Permit Assistance
  • Service icon Battery Storage
  • Service icon Financing Assistance

Website: https://www.infinitysolar.net/
Address: 749 N Main St, Orange, CA 92868
Phone: 7148808089
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.6/5

Semper Solaris

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

Services Offered

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

Website: https://www.sempersolaris.com/locations/los-angeles/
Address: 10713 Norwalk Blvd, Santa Fe Springs, CA 90670
Phone: 2139844554
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.9/5

Vasco Solar

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

Services Offered

  • Service icon Consultation
  • Service icon System Decommissioning
  • Service icon Grid-Tied Solar System
  • Service icon Skilled Repairs
  • Service icon Cleaning and Maintenance
  • Service icon Financing Assistance
  • Service icon Panel Installation

Website: http://www.vascosolar.com/
Address: 17150 Newhope St #403, Fountain Valley, CA 92708
Phone: 7149688845
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.5/5

Go Green Solar

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

Services Offered

  • Service icon Panel Installation
  • Service icon Off-Grid Solar Systems
  • Service icon Battery Storage
  • Service icon Grid-Tied Solar System
  • Service icon Cleaning and Maintenance
  • Service icon Permit Assistance
  • Service icon Consultation
  • Service icon Financing Assistance

Website: https://www.gogreensolar.com/
Address: 1630 S Sunkist St ste e, Anaheim, CA 92806
Phone: 8667984435
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.5/5

EcoSolar USA

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

Services Offered

  • Service icon Consultation
  • Service icon Solar Carports
  • Service icon Cleaning and Maintenance
  • Service icon Battery Storage
  • Service icon Panel Installation

Website: https://www.ecosolarusa.com/
Address: 13880 Harbor Blvd Unit 6D, Garden Grove, CA 92843
Phone: 7142659077
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.6/5

Simple Solar

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

Services Offered

  • Service icon Consultation
  • Service icon Permit Assistance
  • Service icon Panel Installation
  • Service icon Grid-Tied Solar System
  • Service icon Battery Storage
  • Service icon Financing Assistance
  • Service icon Cleaning and Maintenance

Website: https://www.simplesolar.energy/
Address: 661 S Brea Canyon Rd Suite 1, Walnut, CA 91789
Phone: 8449070705
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.2/5

Better Earth Solar

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

Services Offered

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

Website: http://betterearth.solar/
Address: 16720 Marquardt Ave, Cerritos, CA 90703
Phone: 8883739379
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.1/5

Southwest Sun Solar

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

Services Offered

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

Website: http://southwestsunsolar.com/
Address: 13752 Harbor Blvd, Garden Grove, CA 92843
Phone: 7145823909

Methodology: How We Ranked the Best Solar Companies in Fullerton

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


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 Fullerton

While solar panels can help save you a good amount of money on power bills over time, it’s necessary to take into consideration the upfront costs.The installation cost is just one important factor you should take into account when looking into installing solar panels. How much it'll cost and how much you can save depend on things such as:

  • The kind of solar panel system you can afford: This hinges on how much you’re willing to invest upfront.
  • The amount of sunlight your roof gets: This, plus the configuration of your roof, affects affect how much power your solar panels can generate.
  • Incentives: Along with the federal Solar Investment Tax Credit (ITC), which lets you deduct 0 of your overall installation cost, your state or local government may offer additional tax exemptions, credits or rebates that can help you save even more. Not including incentives, you can save an average of $26,000 over the first 20 years with your system, too.
  • How much energy costs for you: The average family in Fullerton pays around $1,200 a year on energy alone, so you could gain that much in savings.

So are solar panels worth it? Whether you’d like to reduce your electricity costs, greenhouse gas emissions or both, solar panels are a worthwhile investment for many Fullerton homeowners.

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Solar Incentives in Fullerton

One of the good things about installing a solar panel system is receiving government incentives.You are eligible for the federal solar investment tax credit (ITC) for the tax year you turn on your a solar panel system. You can also possibly pair the ITC with other state and city rebates and benefits. Check out our article on solar incentives to learn what incentives you can benefit from.

Environmental Impact of Switching to Solar in Fullerton

If you’re thinking of adding solar panels to your home, one of the major reasons why may be to lower your carbon footprint.But how much can using solar energy instead of traditional energy actually help the environment? The more energy you use, the better off the planet will be when you switch to solar as you won’t have to rely on traditional energy sources as much.In fact, if you install solar panels, you could expect to reduce your carbon dioxide emissions by about 50 pounds each year. As you can see, using solar power has so many other benefits besides saving money. One of the main ones is that you can help save the environment too.

Best Regional Coverage

Momentum Solar

★★★★★
4.5
  • Great warranty coverage
  • Representatives are experts on local policies
  • Concierge service ensures steady communication
  • Slightly limited service offerings

Best for Leasing

Sunrun

★★★★★
4.0
  • Expansive service area
  • Many financing options
  • Some reported issues with customer service
  • Some reported issues with door-to-door sales

Best Social Impact

Palmetto Solar

★★★★★
4.0
  • Expansive service area
  • Makes charitable contributions
  • Certified B Corp
  • No leases or PPAs
  • Quality of installation may vary by location

EcoWatch's Fullerton, CA Solar Company Rankings FAQs

Which solar panel installer is the best near me?

The highest-rated local solar company in Fullerton is SunPower by Sun Solar-OC, with a rating of 3.00 stars.

What are some of the pros and cons of adopting solar power?

The advantages of solar power are that it can decrease or, in some cases, 100% erase your electricity bills, raise the value of your home and bring down your carbon footprint. The greatest disadvantages are that solar panels can be costly to install, you may not save as much if you don’t use a lot of electricity and it doesn’t work for all roof types and locations.

How long does it take for solar to pay for itself?

The average payback period for solar panel installation is about 8.7 years, but the exact period depends on the cost of electricity where you are, incentives and net metering programs.

How much solar panel capacity do I need for my house?

Solar panel capacity is how much energy the panels can create under ideal conditions (a sunny day around noon). The average household has to get between 20 and 35 panels to cover their 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.