15 Best Solar Companies in Alum Rock, CA (2025 Reviews)

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

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

Average Alum Rock homeowner saves $2,823/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 Alum Rock

Choosing the right solar panel installation company for your home is a huge decision, but it's one that can pay off big in Alum Rock. Plus, eco-conscious government support resulted in surging numbers of solar companies, setting the ground for a bright and fruitful future in the state.


If you’re thinking about going solar, the first step to take is to find the best solar companies in Alum Rock and compare quotes. The good news is we went ahead and came up with a list of the best solar companies to make it easier on you.To get free quotes from the leading solar companies in Alum Rock, click the "get quote" button below.

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EcoWatch Rankings for Solar Companies in Alum Rock

Best Local Installer
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EcoWatch Rating

5.0/5

TN Electrical and Solar Services

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

Services Offered

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

Kingdom Solar

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

Services Offered

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

Solar Bill Review

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

Services Offered

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

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

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 Consultation
  • Service icon Panel Installation
  • Service icon Financing Assistance

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 Free Quotes
  • Pros icon Informative Resources
  • 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

4.9/5

Infinium Solar, Inc.

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

Services Offered

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

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

Services Offered

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

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

United Solar Electric

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

Services Offered

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

Got Watts?

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

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

Clear Solar Solutions, Inc

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

Services Offered

  • Service icon Solar Panel Upgrades
  • Service icon Financing Assistance
  • Service icon Battery Storage
  • Service icon Panel Installation
  • Service icon Off-Grid Solar Systems

Website: http://clearsolarsolutions.com/
Address: 2200 Maryann Dr, Turlock, CA 95380
Phone: 2098509290
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Solar Installation Group, Inc.

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

Services Offered

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

Website: http://sig.solar/
Address: 1824 Ackley Cir suite a, Oakdale, CA 95361
Phone: 8885080558
Outstanding Local Installer
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EcoWatch Rating

4.8/5

Highlight Solar

  • Pros icon Informative Resources
  • Pros icon Free Quotes
  • 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 Financing Assistance
  • Service icon Permit 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
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EcoWatch Rating

4.8/5

Your Energy Solutions

  • 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 Battery Storage
  • Service icon Panel Installation
  • Service icon Financing Assistance
  • 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
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EcoWatch Rating

4.8/5

Sandbar Solar & Electric

  • 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 Cleaning and Maintenance
  • Service icon Consultation
  • Service icon Financing Assistance

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

4.8/5

NorthStar Solar Inc

  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • 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

Methodology: How We Ranked the Best Solar Companies in Alum Rock

EcoWatch's solar experts analyzed each solar company in Alum Rock 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 Alum Rock


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 Alum Rock

Even though solar panels can save you money on electricity bills over time, it’s important to know the upfront costs.Some significant things that determine how much it will cost and how much you could save include:

  • Incentives: The federal solar investment tax credit, which everyone in the U.S. is eligible for, allows you to deduct 0 of the cost of installing your solar panel system from your taxes. Plus, not including incentives, you can save about $34,000 over 20 years on your energy bills.
  • Average daily sunlight: Since Alum Rock 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 solar panels can save you on your electricity bills.
  • Choice of solar panels: The type of solar panels you get will affect your total cost. High-efficiency monocrystalline panels will cost more upfront but can also save you more money over the lifetime of your system. If you don’t need to maximize efficiency, you can opt for a higher number of more affordable panels.
  • Your energy consumption: If your household regularly uses a lot of energy, you'll reap more rewards from going solar.

There are many good benefits of solar in spite of the upfront cost of installation. It can help the Earth and your bank account. Additionally, it can increase the value of your home, resulting in even more benefits if you want to sell your home later.

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Solar Incentives in Alum Rock

One of the good things about installing a solar panel system is receiving government incentives.There are quite a few federal, state and local rebates and tax credits that may earn you some money back after paying for a qualifying system. For more information about incentives that apply to you, visit our article on solar incentives.

Environmental Impact of Switching to Solar in Alum Rock

One of the most compelling reasons to embrace solar energy is to minimize your dependence on nonrenewable energy sources like burning fossil fuels, which are hazardous for the environment.Many homeowners might be wondering how much exactly they can impact the environment by switching to solar in Alum Rock, though. The average person has a substantial carbon footprint. Between their car, which is responsible for over 10,000 pounds of carbon dioxide emissions a year, and electricity for their home, it can be overwhelming to think about what to do. Installing solar panels is a practical thing you can do to help.Even though solar panel manufacturing releases carbon dioxide emissions, the panels make up for it by significantly decreasing the amount of CO2 you would have been responsible for if you still used traditional energy. In Alum Rock, you can reduce your carbon footprint by 50 pounds a year with solar panels. For homeowners who are worried about the environment, the upfront cost of solar is a small price to pay for reducing your carbon footprint.

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EcoWatch's Alum Rock, CA Solar Company Rankings FAQs

Which solar panel installer is the best in Alum Rock?

The top local solar company in Alum Rock is TN Electrical and Solar Services, with a rating of 5.00 stars.

Are solar panels really eco-friendly?

Solar panels can be harmful for the environment when manufacturers use toxic chemicals when they’re made. Chemicals can make solar panels difficult to dispose of safely once they’ve reached the end of their lifespan. Solar panel manufacturing 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?

Solar panels typically pay for themselves in about 6.9 years, but your solar payback period will vary depending on your utility costs. The higher your typical electricity bill, the faster your solar panel system will pay for itself.

How often do solar panels have to be replaced?

Even though the average lifespan of solar panels is 25 to 30 years, that doesn't mean they should be disposed of. What this means is their energy production will have decreased by about 0.8% each year since installing them. You can choose to replace them once you've had them for that long or you can continue to use them at a lower efficiency after that time.

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.