15 Best Solar Companies in Westminster, CA (2025 Reviews)

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

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

Average Westminster homeowner saves $2,082/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 Westminster

Choosing the best solar panel installation company for your home is a huge decision, but it's one that can reap a lot of rewards in Westminster. One of the advantages of living in Westminster is you have access to plenty of the best solar panels and services in the country.


As you begin your search for the best solar companies in Westminster, you’ll find that there are a large number of providers to choose between. So, we’ve put together a curated list of the top solar companies in the area.Read on to see our picks for the best solar companies in the city, or get connected with a vetted solar company near you right away by clicking the button below.

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EcoWatch Rankings for Solar Companies in Westminster

Best Local Installer
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EcoWatch Rating

5.0/5

REPOWER OC

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

Services Offered

  • Service icon Financing Assistance
  • Service icon Panel Installation

Website: http://www.repoweroc.com/
Address: 2942 Century Pl Suite 760, Costa Mesa, CA 92626
Phone: 7144647721
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Solar Source

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

Services Offered

  • Service icon Panel Installation
  • Service icon Permit Assistance
  • Service icon Financing Assistance

Website: https://solarsourceinc.com/
Address: 2954 E 14th St, Long Beach, CA 90804
Phone: 5628525626
Outstanding Local Installer
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EcoWatch Rating

5.0/5

SunSolar U.S.

  • Pros icon Prompt Service Delivery
  • 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 Solar Carports
  • Service icon Permit Assistance
  • Service icon Panel Installation
  • Service icon Consultation
  • Service icon Battery Storage
  • Service icon Financing Assistance

Website: http://sunsolarus.com/
Address: 16755 Von Karman Ave Suite 200, Irvine, CA 92606
Phone: 9492420088
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Renew Earth Solar

  • Con icon Limited information available on website

Services Offered

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

Website: http://renewearth.com/
Address: 895 Dove St #300, Newport Beach, CA 92660
Phone: 8557270629
Outstanding Local Installer
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EcoWatch Rating

5.0/5

SunGuide Solar Inc

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

Services Offered

  • Service icon Panel Installation
  • Service icon Consultation

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

5.0/5

SYNRG Solar - Home Energy Solutions

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

Services Offered

  • Service icon Panel Installation
  • Service icon Consultation

Website: http://synrgsolar.com/
Address: 333 Chaumont Cir, Foothill Ranch, CA 92610
Phone: 9497421680
Outstanding Local Installer
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EcoWatch Rating

5.0/5

ProSolar California

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

Services Offered

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

Website: http://www.prosolarcalifornia.com/
Address: 5701 Buckingham Pkwy, Culver City, CA 90230
Phone: 3238971538
Outstanding Local Installer
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EcoWatch Rating

5.0/5

SolarRepair

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

Services Offered

  • Service icon Cleaning and Maintenance
  • Service icon Solar Panel Upgrades
  • Service icon Financing Assistance
  • Service icon Skilled Repairs
  • Service icon Panel Installation
  • Service icon Battery Storage

Website: https://www.mysolarrepair.com/
Address: 2834 Hamner Ave #464, Norco, CA 92860
Phone: 8337574255
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Powerfull Solar, Inc

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

Services Offered

  • Service icon Permit Assistance
  • Service icon Panel Installation
  • Service icon Solar Carports
  • Service icon Financing Assistance
  • Service icon Consultation
  • Service icon Cleaning and Maintenance

Website: https://www.powerfullsolarinc.com/
Address: 5316 Venice Blvd., Los Angeles, CA 90019
Phone: 3108047617
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Green Integrations and Management Inc.

  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Battery Storage
  • Service icon Panel Installation

Website: http://www.gimenergy.com/
Address: 3108 Glendale Blvd, Los Angeles, CA 90039
Phone: 8189005471
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Altadena Energy & 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 Permit Assistance
  • Service icon Battery Storage
  • Service icon Panel Installation

Website: http://www.altadenasolar.com/
Address: 1585 N Lake Ave, Pasadena, CA 91104
Phone: 8182014206
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Helios Energy Global

  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Battery Storage

Website: https://www.heliosenergyglobal.com/
Address: 2226 6th St A, Santa Monica, CA 90405
Phone: 4244334943
Outstanding Local Installer
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EcoWatch Rating

5.0/5

AmeriGreen Solar

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

Services Offered

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

Website: http://www.amerigreensolar.com/
Address: 11331 Ventura Blvd #302, Studio City, CA 91604
Phone: 8447047336
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Imperial Solar

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

Services Offered

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

Website: https://imperialsolar.com/
Address: 6912 Owensmouth Ave, Canoga Park, CA 91303
Phone: 8186503500
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Voltaic Construction, LLC

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

Services Offered

  • Service icon Panel Installation

Website: https://www.voltaicnow.com/
Address: 25186 Hancock Ave STE 230, Murrieta, CA 92562
Phone: 8776468658

Methodology: How We Ranked the Best Solar Companies in Westminster

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


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 Westminster

When choosing a solar company, most homeowners or business owners think about the costs the most.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 including:

  • Your location: This influences the average daily sunlight your roof gets, which helps determine how many panels you need.
  • System size and type: Some models are more expensive than others, so the one you want to get can raise or lower your initial investment. Plus, the more solar panels you need to get, the more it'll cost.
  • Your home's power bills: Due to high monthly power bills in Westminster, you could save about $1,200 a year with solar.
  • Incentives: Along with the federal Solar Investment Tax Credit (ITC), which gives you a tax credit currently worth 0 of your overall installation cost, your local government may offer additional tax exemptions, credits or rebates that will help you save even more. Excluding incentives, you can save an average of $25,000 over the first 20 years with your system, too.

There are several wonderful benefits of solar even with the initial cost of installation. It can help the planet and your finances. Additionally, it can boost the value of your home, giving you even more benefits if you decide to sell your home later.

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Solar Incentives in Westminster

If you’re considering switching to solar energy, a number of government incentives and solar rebates can greatly lower your project costs and speed up the return on your investment.There are a lot of federal, state and local rebates and tax credits that earn a decent amount of money back after paying for solar panels. In our article on solar incentives, you can read about the incentives you qualify for near you.

Environmental Impact of Switching to Solar in Westminster

Installing solar panels is a great way to do your part for a more eco-friendly future.You may be curious – how much do solar panels help the planet anyway? For homeowners who want to help preserve the planet, going solar is an easy decision, especially since Westminster produces a fair amount of carbon dioxide emissions from its energy generation.If you go solar, your carbon footprint can be cut by about 50 pounds every year. The benefits of solar power are abundant — just like solar power is! That's why so many homeowners have been happy with making the switch to solar.

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EcoWatch's Westminster, CA Solar Company Rankings FAQs

What is the most reputable solar panel installer in Westminster?

The highest-rated local solar company in Westminster is REPOWER OC, with a rating of 5.00 stars.

Are solar panels actually good for the environment?

Solar panels can be detrimental for the environment when manufacturers use toxic chemicals in the manufacturing process. Chemicals can make solar panels difficult to recycle safely once they’ve reached the end of their lifespan. Solar panel manufacturing requires a lot of energy as well. The energy payback period is about 1 to 4 years.

Are solar panels worth it?

Solar panels can be a beneficial investment for many homeowners, but honestly, they might not be worth it for everyone. If your home doesn't get enough sunlight or your power bills are already pretty low, solar panels might not be for you.

What is solar panel capacity and how much do I need for my house?

Solar panel capacity is how much energy the panels can generate under ideal conditions (a sunny day around noon). The average household has to install between 20 and 35 panels to account for their typical energy usage.

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.