15 Best Solar Companies in Palo Alto, CA (2025 Reviews)

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

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

Average Palo Alto homeowner saves $2,597/year with solar panels

By EcoWatch Local Advisors

Data Analysis: James Savino

Ranking Methodology: Karsten Neumeister

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 Palo Alto

Thinking of going solar but not sure which solar company would be best for you? Although it can be difficult to pick a solar company, the effort will pay off because going solar has many good benefits. Fortunately, there are lots of solar companies in Palo Alto due to encouraging leadership and a growing renewable energy market.


The cost of installing solar panels can change a lot according to your home’s layout and your household energy usage.If you’re ready to start receiving free, no-obligation quotes from the best Palo Alto solar companies, you can click the button below to learn more.

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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

EcoWatch Rankings for Solar Companies in Palo Alto

Best Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

TN Electrical and Solar Services

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

Services Offered

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

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

Solar Bill Review

  • 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 Skilled Repairs
  • Service icon Consultation
  • 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

Kingdom Solar

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

Services Offered

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

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 Panel Installation
  • Service icon Battery Storage

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

4.9/5

Infinium Solar, Inc.

  • Pros icon Free Quotes
  • Pros icon Prompt Service Delivery
  • 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 Battery Storage
  • Service icon Solar Carports
  • Service icon System Decommissioning
  • Service icon Panel Installation
  • Service icon Financing Assistance

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

Allterra Solar

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

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

Got Watts?

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

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 Informative Resources
  • Pros icon Free Quotes
  • 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://www.unitedsolarelectric.net/
Address: 4501 O'Hara Ave, Brentwood, CA 94513
Phone: 9256794665
Outstanding Local Installer
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EcoWatch Rating

4.8/5

Highlight Solar

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

Services Offered

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

Website: https://www.highlightsolar.com/
Address: 1624 Remuda Ln, San Jose, CA 95112
Phone: 8669269997
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.8/5

Your Energy Solutions

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

Services Offered

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

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

EcoWatch Rating

4.8/5

NorthStar Solar Inc

  • 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 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
ecowatch badge icon

EcoWatch Rating

4.8/5

Sandbar Solar & Electric

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

Website: https://sandbarsc.com/
Address: 2656 Mission St, Santa Cruz, CA 95060
Phone: 8314698888
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.8/5

Bay Valley Solar Roofing

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

Services Offered

  • Service icon Panel Installation
  • Service icon Skilled Repairs
  • Service icon Battery Storage
  • Service icon Financing Assistance

Website: https://www.bayvalleyroofing.com/
Address: 1820 Arnold Industrial Way Ste A, Concord, CA 94520
Phone: 9254286614
Outstanding Local Installer
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EcoWatch Rating

4.7/5

Cinnamon Energy Systems

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

Website: https://www.cinnamon.energy/
Address: 809 University Ave, Los Gatos, CA 95032
Phone: 4088837000

Methodology: How We Ranked the Best Solar Companies in Palo Alto

EcoWatch's solar experts analyzed each solar company in Palo Alto 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 Palo Alto


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 Palo Alto

We understand that for many homeowners, the choice to invest in solar comes down to installation costs.The installation cost is just one important factor you should consider when looking into installing solar panels. How much it'll cost and how much you can save depend on things including:

  • The kind of solar panels you want: More high-tech panels have higher prices, so that will shape your budget for your solar project.
  • Incentives: One thing that can make your solar project cost less is the solar investment tax credit (ITC), which is a tax credit that lets you deduct from your taxes a percentage of the project cost. You can also save a decent amount of money on your utility bills, which can generate an average of $31,000 of savings over 20 years.
  • Average daily sunlight: Since Palo Alto gets lots of sunlight, your solar panel system will most likely be able to generate enough energy to power your whole home, which influences how much your electricity bills will be.
  • How much energy costs for you: The average family in Palo Alto spends around $1,500 a year on energy alone, so you could gain that much in savings.

Even though a solar panel system costs a good chunk of money upfront, it can save you thousands of dollars in the long term. The question of how much, though, depends on a number of factors, such as the size of your solar panel system and your current power bills.

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Solar Incentives in Palo Alto

Because solar power is more sustainable than fossil fuels, there are several government incentives in place to encourage its adoption.Local solar incentive programs depend on the location and, sometimes, utility company. Many states offer rebates for solar power, in addition to the federal solar tax credit. Our article on solar incentives has more information on the incentives you can find in Palo Alto.

Environmental Impact of Switching to Solar in Palo Alto

Swapping traditional energy for solar is a powerful way to do your part for a more sustainable future.A question many people might be wondering about is how much can they really help save the environment by going solar anyway? In Palo Alto, where the energy generation could be cleaner, going solar can have a big impact on the Earth since solar power has a lower carbon footprint.Although making solar panels emits carbon dioxide, the panels make up for it by significantly decreasing the amount of CO2 you would have released if you still used nonrenewable energy. In Palo Alto, you can reduce your carbon footprint by 50 pounds a year with solar panels. For those who want to help the environment, the upfront cost of solar is a small price to pay for reducing your carbon footprint.

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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

EcoWatch's Palo Alto, CA Solar Company Rankings FAQs

What is the most reputable solar installer in Palo Alto?

In Palo Alto, TN Electrical and Solar Services is the most reputable local solar company. Our team of experts rates it 5.00 stars, so it's a solid choice if you're looking to install solar panels on your roof.

What is the negative environmental impact of making solar panels?

Manufacturing solar panels requires chemicals and produces toxic waste that can be dangerous for the environment, which is the main drawback of solar panels.

Is it worth installing solar panels on my house?

Solar panels call for a considerable upfront investment that will cost you several thousands of dollars, but whether or not solar panels are worth it depends on a collection of factors like how much you pay for electricity and how much direct sunlight your roof gets.

How often do solar panels have to be replaced?

On average, solar panels can last about 25 to 30 years. Some even last up to 50 years, but efficiency goes down by about 0.8% each year. You can choose to replace them sooner if you want to maintain a larger amount of energy production.

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.