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

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

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

Average Alamo homeowner saves $2,768/year with solar panels

By EcoWatch Local Advisors

Data Analysis: James Savino

Ranking Methodology: Karsten Neumeister

Updated June 24, 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 Alamo

Finding the right solar panel installation company for your roof is an important decision, but it's one that can reap a lot of rewards in Alamo. Solar panels aren't just good for the Earth — your finances will benefit too. After switching to solar power, you can save an average of $33,000 over 20 years, and this doesn't even include incentives.


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

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 Technology

Tesla Energy

★★★★★
3.2
  • Price-match guarantee
  • Sleek, efficient, and durable solar panels
  • Best solar battery on the market
  • Some reported issues with customer service
  • Customer service varies by local dealer

EcoWatch Rankings for Solar Companies in Alamo

Best Local Installer
ecowatch badge icon

EcoWatch Rating

4.5/5

SunPower

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

Website: https://us.sunpower.com/
Address: 1414 Harbour Way S, Richmond, CA 94804
Phone: 5102608200
Outstanding Local Installer
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EcoWatch Rating

3.0/5

SunPower by The Solar Quote

  • Pros icon Prompt Service Delivery
  • 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 Grid-Tied Solar System
  • Service icon Consultation
  • Service icon Cleaning and Maintenance
  • Service icon Battery Storage

Website: http://www.sunpowerbythesolarquote.com/
Address: 2819 W March Ln #154, Stockton, CA 95219
Phone: 8889446765
Outstanding Local Installer
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EcoWatch Rating

3.0/5

Solar Works

  • 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 Financing Assistance
  • Service icon Panel Installation
  • Service icon Community Solar Projects

Website: http://www.solarworksca.com/
Address: 400c Morris St, Sebastopol, CA 95472
Phone: 7078298282
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Source Energy

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

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

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

4.8/5

NorthStar Solar Inc

  • 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 Battery Storage
  • Service icon Panel Installation

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

Bay Valley Solar Roofing

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

4.5/5

Solar Technologies

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

Website: https://solartechnologies.com/
Address: 14 Beta Ct, San Ramon, CA 94583
Phone: 9259613756
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Solar Bill Review

  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Pros icon Family-Operated Business
  • 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 Consultation
  • Service icon Panel Installation
  • Service icon Battery Storage
  • Service icon Skilled Repairs

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

4.3/5

solarXperts

  • 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 Battery Storage
  • Service icon Panel Installation

Website: http://www.solarxperts.net/
Address: 2150 John Glenn Dr Suite 250, Concord, CA 94520
Phone: 8336997378
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.2/5

High Definition Solar

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

Services Offered

  • Service icon Panel Installation

Website: http://www.highdefinitionsolar.com/
Address: 1190 Burnett Ave, Concord, CA 94520
Phone: 8882031855
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.6/5

Green Air and Solar

  • Pros icon Prompt Service Delivery
  • 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 Consultation
  • Service icon Financing Assistance
  • Service icon Battery Storage
  • Service icon Panel Installation
  • Service icon Skilled Repairs

Website: http://www.gogreenair.net/
Address: 3953 Industrial Way, Concord, CA 94520
Phone: 9252847336
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.2/5

Semper Solaris

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

Website: https://www.sempersolaris.com/locations/bay-area/concord/
Address: 1990 Olivera Rd Suite E, Concord, CA 94520
Phone: 9258564242
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Complete Solar

  • 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 Financing Assistance
  • Service icon Skilled Repairs
  • Service icon Panel Installation
  • Service icon Cleaning and Maintenance
  • Service icon Consultation

Website: https://www.completesolar.com/
Address: 3000 Executive Pkwy Suite 504, San Ramon, CA 94583
Phone: 8772994943
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.7/5

CivicSolar, Inc

  • 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 Battery Storage
  • Service icon Panel Installation

Website: https://www.civicsolar.com/
Address: 304 12th St #3b, Oakland, CA 94607
Phone: 8004092257

Methodology: How We Ranked the Best Solar Companies in Alamo

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


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 Alamo

Even though solar panels can help save you a decent chunk of change on energy bills over time, it’s necessary to consider the startup costs.The overall price and potential savings vary depending on some important factors such as:

  • System size and type: Some models are more pricy than others, so the one you choose can raise or lower your upfront cost. Plus, the more solar panels you need to get, the more it'll cost.
  • Incentives: One thing that can save you money on your solar project 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 money on your energy bills, which can give you an average of $33,000 of savings over 20 years.
  • How much you spend on energy: If your local utility rates are quite high, there's a better chance you'll have a higher return on your investment in solar panels. In Alamo, you can save an average of $1,538 a month on your electricity bills.
  • The amount of sunlight your home gets: Because of Alamo’s very high amount of average daily sunlight, you should be able to save a lot on your electric bills.

Though a solar panel system costs a decent chunk of money upfront, it can save you a considerable amount in the long term. The question of how much, though, depends on a number of factors, such as the amount of daily direct sunlight available and incentives.

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Solar Incentives in Alamo

Since solar power is more sustainable than burning fossil fuels, there are quite a few government incentives in place to encourage its adoption.On top of the federal solar investment tax credit, there are also some local incentives, which in almost all cases, can be claimed in addition to the federal incentive, so you can save even more. Check out our article on solar incentives to see what incentives you can take advantage of.

Environmental Impact of Switching to Solar in Alamo

If you’re considering adding solar panels to your home, one of the principal reasons why may be to reduce your reliance on nonrenewable energy.But how much can switching to solar actually affect the environment? Adopting solar power is an impactful choice for the environment, because the largest source of greenhouse gas emissions in the U.S. is from burning fossil fuels for electricity, heat, and transportation – all of which can be powered by solar instead.In fact, if you adopt solar power, you could expect to reduce your carbon dioxide emissions by about 50 pounds each year. Since solar power is plentiful and generates electricity without CO2 emissions, making the switch to solar power is one easy step you can take to help protect the planet.

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 Technology

Tesla Energy

★★★★★
3.2
  • Price-match guarantee
  • Sleek, efficient, and durable solar panels
  • Best solar battery on the market
  • Some reported issues with customer service
  • Customer service varies by local dealer

EcoWatch's Alamo, CA Solar Company Rankings FAQs

What is the top solar installer in Alamo?

The highest-rated local solar company in Alamo is SunPower, with a rating of 4.50 stars.

What is the negative environmental impact of solar panel manufacturing?

Solar panels can be detrimental for the environment when manufacturers use toxic chemicals in the construction. 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.

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

Solar panels usually pay for themselves in about 7.0 years, but your solar payback period will vary depending on your utility costs. The more your typical power bill, the faster your solar panel system will pay for itself.

How efficient is a solar panel system?

Solar panel efficiency is the amount of energy from the sun that is converted into electricity. Most panels today have an efficiency rating of about 15 to 25%. If your panels are more efficient, you'll need fewer of them for your home's 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.