15 Best Solar Companies in Union City, CA (2025 Reviews)

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

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

Average Union City homeowner saves $2,798/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 Union City

Finding the best solar panel installation company for your house is a huge decision, but it's one that can reap a lot of rewards in Union City. Plus, the solar industry is booming in Union City, giving homeowners access to some of the most reputable solar installers in the country.


To help you navigate through the huge amount of Union City solar installers, we’ve come up with a list of the top ones.Read on to see our picks for the top solar companies in the city, or connect with a certified solar company in your area right away by clicking the button below.

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EcoWatch Rankings for Solar Companies in Union City

Best Local Installer
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EcoWatch Rating

5.0/5

Solar Bill Review

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

Services Offered

  • Service icon Consultation
  • Service icon Skilled Repairs
  • Service icon Panel Installation
  • Service icon Battery Storage

Website: https://solarbillreview.com/
Address: 11501 Dublin Blvd STE 200, Dublin, CA 94568
Phone: 9258332641
Outstanding Local Installer
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EcoWatch Rating

5.0/5

TN Electrical and Solar Services

  • Pros icon Free Quotes
  • 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 Grid-Tied Solar System
  • Service icon Solar Panel Upgrades
  • Service icon Battery Storage
  • Service icon Cleaning and Maintenance
  • Service icon Consultation
  • Service icon Panel Installation

Website: http://www.tnsolars.com/
Address: 1150 Murphy Ave #240, San Jose, CA 95131
Phone: 4082293632
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Kingdom Solar

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

Services Offered

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

Website: http://www.kingdomsolar.com/
Address: 2388 Research Dr, Livermore, CA 94550
Phone: 9254818903
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Source Energy

  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • 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

Website: https://sourcenergy.solar/
Address: 161 N Civic Dr #400, Walnut Creek, CA 94596
Phone: 9253196634
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Pac Solar Corporation

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

Services Offered

  • Service icon Battery Storage
  • Service icon Panel Installation

Website: http://pacsolar.com/
Address: 118 Mitchell Blvd, San Rafael, CA 94903
Phone: 4152998989
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Amy's Roofing and Solar

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

Services Offered

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

Website: https://www.amyrs.com/
Address: 320 Jewett Rd, Petaluma, CA 94952
Phone: 7079819801
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Bella Hem Solar, Inc.

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

Services Offered

  • Service icon Battery Storage
  • Service icon Permit Assistance
  • Service icon Skilled Repairs
  • Service icon Cleaning and Maintenance
  • Service icon Panel Installation
  • Service icon Consultation

Website: http://www.bellahem.com/
Address: 7556 Windward Dr, Rohnert Park, CA 94928
Phone: 5106290790
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Infinium Solar, Inc.

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

Services Offered

  • Service icon System Decommissioning
  • Service icon Financing Assistance
  • Service icon Battery Storage
  • Service icon Panel Installation
  • Service icon Solar Carports

Website: https://www.infiniumsolar.com/
Address: 1190 Dell Ave ste o, Campbell, CA 95008
Phone: 4085838101
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Got Watts?

  • Pros icon Informative Resources
  • Pros icon Prompt Service Delivery
  • 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 Financing Assistance
  • Service icon Skilled Repairs
  • Service icon Battery Storage
  • Service icon Cleaning and Maintenance
  • Service icon Solar Panel Upgrades
  • Service icon Panel Installation

Website: https://www.gotwatts.com/
Address: 2045 Commerce Ave, Concord, CA 94520
Phone: 9254210411
Outstanding Local Installer
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EcoWatch Rating

4.9/5

United Solar Electric

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

Services Offered

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

Website: https://www.unitedsolarelectric.net/
Address: 4501 O'Hara Ave, Brentwood, CA 94513
Phone: 9256794665
Outstanding Local Installer
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EcoWatch Rating

4.9/5

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

Website: http://www.allterrasolar.com/
Address: 125-B McPherson St, Santa Cruz, CA 95060
Phone: 8314252608
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Ambrose Solar

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

Services Offered

  • Service icon Financing Assistance
  • Service icon Battery Storage
  • Service icon Cleaning and Maintenance
  • Service icon Panel Installation
  • Service icon Permit Assistance

Website: http://www.ambrosesolar.com/
Address: 820 Eubanks Dr Suite A, Vacaville, CA 95688
Phone: 7079998036
Outstanding Local Installer
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EcoWatch Rating

4.8/5

Your Energy Solutions

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

Website: http://yourenergysolutions.com/
Address: 290 Rickenbacker Cir, Livermore, CA 94551
Phone: 8888880711
Outstanding Local Installer
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EcoWatch Rating

4.8/5

NorthStar 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 Panel Installation
  • Service icon Battery Storage

Website: http://www.gonorthstarsolar.com/
Address: 822 Hartz Way STE 240, Danville, CA 94526
Phone: 9254007479
Outstanding Local Installer
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EcoWatch Rating

4.8/5

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

Website: https://www.highlightsolar.com/
Address: 1624 Remuda Ln, San Jose, CA 95112
Phone: 8669269997

Methodology: How We Ranked the Best Solar Companies in Union City

EcoWatch's solar experts analyzed each solar company in Union City 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 Union City


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 Union City

Solar panels run off a free energy source — the sun — but to take advantage of this you first need to pay to install your panels.There are a few factors you should take into consideration when determining how much it will cost and how much you can save, such as:

  • Incentives: Along with the federal Solar Investment Tax Credit (ITC), which lets you deduct 0 of your overall installation cost, your 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 $33,000 over the first 20 years with your system, too.
  • System size and type: Some models are more pricy than others, so the one you want can raise or lower your initial investment. Plus, the more solar panels you need, the more it'll cost.
  • Your home's orientation toward the sun: This, plus the configuration of your roof, affects affect how much power your solar panels can generate.
  • How much electricity your household consumes: Homes that consume plenty of electricity each month may call for more solar panels and, consequently, more upfront cost, but will also benefit more over time.

Although a solar panel system costs a sizable 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 angle of your roof and incentives.

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Solar Incentives in Union City

Since solar power is more sustainable than fossil fuels, there are several government incentives in place to encourage people to make the switch.You qualify for the federal solar investment tax credit (ITC) for the tax year you turn on your a solar system. You can also potentially use the ITC with other local incentives. For comprehensive information about incentives for homeowners in Union City, visit our article on solar incentives.

Environmental Impact of Switching to Solar in Union City

If you’re thinking of adding solar panels to your home, one of the principal reasons why may be to lower your carbon footprint.But how much can switching to solar actually help the environment? The average person has a substantial carbon footprint. Between their car, which releases over 10,000 pounds of carbon dioxide emissions each year, and electricity for their home, it can be overwhelming to think about what to do. Installing solar panels is a simple thing you can do to help.While making solar panels emits carbon dioxide, the panels make up for it by considerably lowering the amount of CO2 you would have produced if you still used nonrenewable energy. In Union City, you can reduce your carbon footprint by 50 pounds a year with solar panels. As you can see, investing in solar has so many other benefits outside of saving money. One of the primary ones is that you can help save the planet too.

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EcoWatch's Union City, CA Solar Company Rankings FAQs

What is the top solar installation company in Union City?

The best local solar company in Union City is Solar Bill Review, with a rating of 5.00 stars.

What are the pros and cons of solar power?

A few of the biggest pros are that it lowers your power bills, it’s good for the environment, and it gives you a significant return on your investment (ROI). The most notable cons are that solar panels don’t work as well when there’s limited direct sunlight, there is a high upfront cost and solar panels can be an eyesore.

How long does it take to see a return on your investment after installing solar panels?

The average payback period for solar panel installation is about 6.9 years, but the exact period is influenced by local electricity costs, incentives and net metering programs.

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

Solar panel capacity is the amount of energy the panels can generate under ideal conditions (a sunny day around noon). The average household requires 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.