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

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

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

Average Berkeley homeowner saves $2,798/year with solar panels

By EcoWatch Local Advisors

Data Analysis: James Savino

Ranking Methodology: Karsten Neumeister

Updated April 21, 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 Berkeley

When deciding on the best solar installers, Berkeley homeowners have more options to choose from than ever before, which can be too much to take in, but we’re here to make making the switch to solar energy less confusing. Over 20 years of offsetting your energy costs with a solar panel system, you can save about $33,000 on your electricity bills.


To help you navigate through the large variety of Berkeley solar installers, we’ve come up with a list of the top ones.We suggest shopping around for multiple quotes and comparing them to find the best installer for your home. To get started with free, no-obligation quotes from vetted solar panel companies in Berkeley, click the link 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 Berkeley

Best Local Installer
ecowatch badge icon

EcoWatch Rating

4.5/5

SunPower

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

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

EcoWatch Rating

3.0/5

SunPower by The Solar Quote

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

Services Offered

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

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

EcoWatch Rating

4.8/5

CivicSolar, Inc

  • 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 Battery Storage
  • Service icon Panel Installation

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

EcoWatch Rating

4.7/5

SolarUnion

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

Services Offered

  • Service icon Consultation
  • Service icon Battery Storage
  • Service icon Solar Panel Upgrades
  • Service icon Cleaning and Maintenance
  • Service icon Panel Installation
  • Service icon Skilled Repairs

Website: https://www.solarunion.com/
Address: 1700 Montgomery St Suite 108, San Francisco, CA 94111
Phone: 8888156633
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

Source Energy

  • 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 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
ecowatch badge icon

EcoWatch Rating

4.9/5

Got Watts?

  • Pros icon Clear Pricing Policy
  • Pros icon Prompt Service Delivery
  • 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 Solar Panel Upgrades
  • Service icon Permit Assistance
  • Service icon Financing Assistance
  • Service icon Skilled Repairs
  • Service icon Cleaning and Maintenance

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

EcoWatch Rating

3.0/5

GRID Alternatives

  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Battery Storage
  • Service icon Panel Installation

Website: http://www.gridalternatives.org/
Address: 1171 Ocean Ave UNIT 200, Oakland, CA 94608
Phone: 5107311310
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Save a Lot Solar

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

Services Offered

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

Website: https://www.savealotsolar.com/
Address: 1201 Tenth St, Berkeley, CA 94706
Phone: 8338765272
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.8/5

Bay Valley Solar Roofing

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

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

EcoWatch Rating

4.3/5

solarXperts

  • 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 Battery Storage

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

4.1/5

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

4.7/5

Green Air and Solar

  • Pros icon Free Quotes
  • Pros icon Prompt Service Delivery
  • 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 Cleaning and Maintenance
  • Service icon Consultation
  • Service icon Financing Assistance
  • Service icon Skilled Repairs
  • Service icon Panel Installation
  • Service icon Battery Storage

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

EcoWatch Rating

4.8/5

Certified Solar, Heating & Air Conditioning

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

Services Offered

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

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

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
ecowatch badge icon

EcoWatch Rating

3.0/5

Solar Panel RoofNSave Alameda

  • 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 Skilled Repairs
  • Service icon Cleaning and Maintenance
  • Service icon Panel Installation

Website: https://solarpanelroofnsavealameda.com/
Address: 1101 Marina Village Pkwy, Alameda, CA 94501
Phone: 5107512223

Methodology: How We Ranked the Best Solar Companies in Berkeley

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


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 Berkeley

We know that for lots of homeowners, the choice to invest in solar depends on installation costs.The installation cost is just one important factor you should bear in mind when looking into installing solar panels. How much it'll cost and how much you can save depend on things such as:

  • Incentives: The federal solar investment tax credit currently lets you lower your taxes by 0 of the project cost. Your state and city may also have various incentives that you can take advantage of. Additionally, you can save about $33,000 over 20 years on your utility bills, before factoring in incentives.
  • Choice of solar panels: The type of solar panels you choose 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.
  • How much power your household consumes: Households that use plenty of energy each month may call for more solar panels and, as a result, be more costly, but will also save more on their energy bills over time.
  • The amount of sunlight your roof gets: Due to Berkeley’s very high amount of average daily sunlight, you should be able to save a lot on your energy bills.

So is installing solar panels worth it? Whether you’re trying to decrease your energy bills, greenhouse gas emissions or both, solar panels are a worthwhile investment for many Berkeley homeowners.

Solar Savings Calculator for {{ solarcalc.name }}

Adopting solar energy can greatly impact both the environment and your power bills. To see how much, try out the calculator below. You can also view our solar panel cost guide for Berkeley, CA.

{{ solarcalc.time_period|number:0 }} -year savings{{ solarcalc.total_savings()|currency }}
Estimated cost{{ solarcalc.array_cost() | currency }}
Estimated incentives{{ solarcalc.incentive_savings() | currency }}
Payback period{{ solarcalc.payback_period()|number:1 }} years
CO2 emissions prevented{{ solarcalc.CO2_total()|number:0 }} lbs
Miles driven equivalent{{ solarcalc.CO2_total()/0.78|number:0 }} mi
Why leave {{ solarcalc.total_savings()|currency }} on the table? Help the environment and your wallet by switching to solar. SAVE NOW

Electricity rate:
{{ solarcalc.elec_cost/10 }} ¢
Shade:
{{ solarcalc.shade }} %
Time period:
{{ solarcalc.time_period }} years
System size:
{{ solarcalc.system_size }} kW
Additional Incentives:
{{ solarcalc.additional_incentives|currency }}

Switching to solar in {{ solarcalc.name }} can save you {{ solarcalc.total_savings() | currency }} over the course of {{ solarcalc.time_period|number:0 }} years.

Solar Incentives in Berkeley

In an effort to increase the adoption of solar power, incentives are offered by the government – and even some utility companies – to help make switching to solar power more affordable and accessible.Local solar incentives vary by location and, sometimes, utility company. A lot of states offer rebates for solar power, in addition to the federal solar tax credit. Our article on solar incentives goes over more in-depth information on the incentives you can benefit from in Berkeley.

Environmental Impact of Switching to Solar in Berkeley

Switching to solar energy can have a beneficial impact on the environment.You may be curious – how much does making the switch do for the planet anyway? Something that can drastically shape your carbon footprint is your commute time and how much you drive generally. If you install solar panels and drive an electric car, you can greatly decrease your carbon dioxide emissions by charging your car at home.In fact, if you install solar panels, you could reduce your carbon dioxide emissions by about 50 pounds each year. As you can see, going solar has so many other rewards apart from saving money. One of the major ones is that you can help save the environment too.

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 Berkeley, CA Solar Company Rankings FAQs

What is the most reputable solar panel installer in Berkeley?

In Berkeley, SunPower is the top local solar company. Our team of experts rates it 4.50 stars, so it's a solid choice if you're looking to install solar panels on your house.

What is the negative environmental impact of solar panels?

Solar panels can be harmful for the environment when manufacturers use toxic chemicals in the manufacturing process. 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 generally pay for themselves in about 6.9 years, but your solar payback period will vary based on your utility costs. The more your typical power bill, the quicker your solar panel system will pay for itself.

When should I install solar panels?

Despite summer being the most popular time people install solar panels, the optimal time is actually winter. You can save money since there's decreased demand during the winter months, and it lets you be up and running with solar for the more expensive power bills you may get during the summer.

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.