15 Best Solar Companies in Walnut Creek, CA (2024 Reviews)

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

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

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

By EcoWatch Local Advisors

Data Analysis: James Savino

Ranking Methodology: Karsten Neumeister

Updated February 01, 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 Walnut Creek

When you’re on the hunt for the best solar companies in Walnut Creek, combing through so many options can be intimidating, but it can pay off since adopting solar power can offer so many fantastic benefits. Installation costs can be high, but adopting solar will save you money on your energy bills over time. In fact, you can expect to save about $33,000 over 20 years.


If you want to start taking advantage of the great number of benefits of solar, we’ll help you narrow down your options to find the Walnut Creek solar installer that’s in the right price range for you.For an idea of how much you would pay to install solar panels on your roof, you can get a free quote from one of the top solar companies in Walnut Creek by clicking the "get quote" button below.

Best National Provider

SunPower

★★★★★
5.0

  • Most efficient panels on the market
  • National coverage
  • Cradle to Cradle sustainability certification
  • Great warranty coverage
  • Expensive
  • Customer service varies by local dealer

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 Walnut Creek

Best Local Installer
ecowatch badge icon

EcoWatch Rating

4.5/5

SunPower Corporation

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

Website: https://us.sunpower.com/
Address: 880 Harbour Way S Suite 600, Richmond, CA 94804
Phone: 5105400550
Outstanding Local Installer
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EcoWatch Rating

3.0/5

SunPower by The Solar Quote

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

Services Offered

  • Service icon Battery Storage
  • Service icon Residential Panels
  • Service icon Maintenance
  • Service icon Commercial Panels
  • Service icon Consultation

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

Sunrun 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 Maintenance
  • Service icon Battery Storage
  • Service icon Financing Assistance
  • Service icon Residential Panels
  • Service icon Tesla Powerwall
  • Service icon Commercial Panels

Website: https://www.sunrun.com/solar-by-state/ca/sacramento-california-solar
Address: 1215 Striker Ave Ste 120, Sacramento, CA 95834
Phone: 9165475250
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 Solar Panel Upgrades
  • Service icon Consultation
  • Service icon Residential Panels
  • Service icon Commercial Panels
  • 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

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 Maintenance
  • Service icon Residential Panels
  • Service icon Financing Assistance
  • Service icon Solar Panel Upgrades
  • Service icon Skilled Repairs
  • Service icon Battery Storage
  • Service icon Commercial Panels

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

EcoWatch Rating

4.8/5

Bay Valley Solar Roofing

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

Services Offered

  • Service icon Residential Panels
  • Service icon Skilled Repairs
  • Service icon Battery Storage
  • Service icon Commercial Panels
  • Service icon Financing Assistance
  • Service icon Emergency Services

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

4.8/5

Certified Solar, Heating & Air Conditioning

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

Services Offered

  • Service icon Consultation
  • Service icon Financing Assistance
  • Service icon Commercial Panels
  • Service icon Cleaning
  • Service icon Skilled Repairs
  • Service icon Maintenance
  • Service icon Residential Panels

Website: https://www.certifiedheatingandairconditioning.com/
Address: 5040 Commercial Cir unit c, Concord, CA 94520
Phone: 9254123300
Outstanding Local Installer
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EcoWatch Rating

4.7/5

Green Air and Solar

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

Services Offered

  • Service icon Battery Storage
  • Service icon Skilled Repairs
  • Service icon Emergency Services
  • Service icon Residential Panels
  • Service icon Consultation
  • Service icon Financing Assistance
  • Service icon Maintenance

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

4.5/5

Solar Technologies

  • 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 Energy Efficiency Audit
  • Service icon Battery Storage
  • Service icon Tesla Powerwall
  • Service icon Consultation
  • Service icon Financing Assistance
  • Service icon Residential Panels
  • Service icon Commercial Panels

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

4.3/5

solarXperts

  • 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 Residential Panels
  • Service icon Commercial Panels

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

4.1/5

High Definition Solar

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

Services Offered

  • Service icon Residential Panels

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

3.0/5

Semper Solaris

  • 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 Financing Assistance
  • Service icon Consultation
  • Service icon Commercial Panels
  • Service icon Battery Storage
  • Service icon Residential Panels

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

4.0/5

Complete Solar

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

Services Offered

  • Service icon Financing Assistance
  • Service icon Solar Panel Upgrades
  • Service icon Consultation
  • Service icon Permit Assistance
  • Service icon Residential Panels
  • Service icon Skilled Repairs
  • Service icon Maintenance

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

4.8/5

CivicSolar, Inc

  • 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 Residential Panels
  • Service icon Commercial Panels

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

3.0/5

NorthStar Solar Inc

  • 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 Residential Panels
  • Service icon Commercial Panels
  • 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 Walnut Creek

EcoWatch's solar experts analyzed each solar company in Walnut Creek 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 Walnut Creek


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 Walnut Creek

We understand that for most homeowners, the choice to invest in solar depends on installation costs.A few key factors that influence how much it will cost to install a solar panel system on your home and how much it could save you over time are:

  • How much sunlight your roof gets: If your roof gets limited direct sunlight, your solar panel system won’t be able to produce as much energy, which will give you lower savings on energy bills than a house with a roof that gets lots of sunlight.
  • Incentives: The federal solar investment tax credit currently lets you decrease your taxes by 0 of the project cost. Your state may also have various incentives that you can benefit from. Additionally, you can save about $33,000 over 20 years on your utility bills, not including incentives.
  • Choice of solar panels: The kind of solar panels you want will affect your total cost. High-efficiency monocrystalline panels will cost more upfront but can also lead to more savings over the lifetime of your system. If you don’t need to maximize efficiency, you can go with a higher number of more affordable panels.
  • Your current electricity bills: Solar panels can greatly decrease, or completely eradicate, your utility bills. In Walnut Creek, you can save an average of $1,538 a month.

There are lots of great benefits of solar in spite of the upfront cost of installation. It can help the planet and your wallet. In addition, it can boost the value of your home, giving you even more benefits if you choose to sell your home later.

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Solar Incentives in Walnut Creek

If you’re thinking about making the switch to solar power, various government incentives and state programs can dramatically bring down the cost of the project and speed up the return on your investment.On top of the federal tax credit incentive, there are also some local programs, which in the majority of cases, stack with the federal incentive, so you can save even more. Take a look at our article on solar incentives to find out what incentives you can take advantage of.

Environmental Impact of Switching to Solar in Walnut Creek

One of the most compelling reasons to adopt solar power is to cut your reliance on nonrenewable energy sources like burning fossil fuels, which are damaging for the environment.A question many homeowners might be thinking about is how much can they really help the environment by switching to solar power anyway? In a city like Walnut Creek where energy use is somewhat high, going solar is a great plan for those who care about the planet.Although solar panel production releases carbon dioxide emissions, the panels make up for it by significantly reducing the amount of CO2 you would have produced if you still used nonrenewable energy. In Walnut Creek, you can reduce your carbon footprint by 50 pounds a year with solar panels. If you want to do what you can for the environment, you’ll no doubt find that there are many advantages to adopting solar power other than just saving money on bills. You can also help preserve the environment, which some would argue is worth more.

Best National Provider

SunPower

★★★★★
5.0

  • Most efficient panels on the market
  • National coverage
  • Cradle to Cradle sustainability certification
  • Great warranty coverage
  • Expensive
  • Customer service varies by local dealer

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 Walnut Creek, CA Solar Company Rankings FAQs

Which solar panel installer is the best near me?

The best local solar company in Walnut Creek is SunPower Corporation, with a rating of 4.50 stars.

What is the negative environmental impact of solar panel manufacturing?

Solar panels can be bad for the environment when manufacturers use toxic chemicals in the construction. Chemicals can make solar panels difficult to dispose of safely once they’ve reached the end of their lifespan. Making solar panels needs 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 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 energy bill, the faster your solar panel system will pay for itself.

What is the efficiency of solar panels?

For the most part, solar panels are about 15 to 25% efficient, which means they can convert that percentage of the energy from the sun into usable electricity.

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.