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

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

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

Average Westmont homeowner saves $2,318/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 Westmont

On the hunt for the top solar companies in Westmont? Installing solar panels is an exciting venture that many homeowners find rewarding for their wallets, communities and the planet. Due to Westmont's very high level of sunshine on average, it's long been on the leading edge of solar energy.


If you’re planning on going solar, the first step to take is to find the best solar companies in Westmont and compare quotes. The good news is we went ahead and put together a list of the best solar companies for you.For an idea of how much you might pay to put up a solar panel system on your roof, you can get a free quote from one of the top solar companies in Westmont 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 Westmont

Best Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

SunPower by Sun Solar-OC

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

Website: https://sunpowerbysunsolaroc.com/
Address: 4085 E La Palma Ave Suite B, Anaheim, CA 92807
Phone: 9497349695
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

SunPower by True Power Solar

  • Pros icon Free Quotes
  • 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 Residential Panels
  • Service icon Commercial Panels
  • Service icon Maintenance

Website: http://www.truepowersolar.com/
Address: 201 Clark Ave, Pomona, CA 91767
Phone: 7146768888
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

Socal Energy

  • Pros icon Free Quotes
  • 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 Residential Panels
  • Service icon Financing Assistance
  • Service icon Skilled Repairs
  • Service icon Emergency Services

Website: http://www.socalnrg.com/
Address: 6200 Hollywood Blvd, Los Angeles, CA 90028
Phone: 8182903154
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

Helios Energy Global

  • 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 Residential Panels
  • Service icon Battery Storage

Website: https://www.heliosenergyglobal.com/
Address: 2226 6th St A, Santa Monica, CA 90405
Phone: 4242725373
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.4/5

Energy Service Partners

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

Services Offered

  • Service icon Residential Panels
  • Service icon Skilled Repairs
  • Service icon Battery Storage

Website: https://www.joinesp.com/
Address: 970 W 190th St #302, Torrance, CA 90502
Phone: 8668654559
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.4/5

Ameco Solar & Roofing

  • Pros icon Informative Resources
  • 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 Residential Panels
  • Service icon Consultation
  • Service icon Permit Assistance
  • Service icon Commercial Panels

Website: http://www.amecosolar.com/
Address: 7623 Somerset Blvd, Paramount, CA 90723
Phone: 5626334400
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

♻ Long Beach Solar ♻

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

Services Offered

  • Service icon Cleaning
  • Service icon Skilled Repairs
  • Service icon Consultation
  • Service icon Residential Panels
  • Service icon Off-Grid Solar Systems
  • Service icon Commercial Panels
  • Service icon Permit Assistance
  • Service icon Battery Storage
  • Service icon Tesla Powerwall
  • Service icon Financing Assistance

Website: http://longbeach-solar.com/
Address: 2174 Sea Ridge Dr, Signal Hill, CA 90755
Phone: 5622940995
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

Solar Source

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

Services Offered

  • Service icon Permit Assistance
  • Service icon Residential Panels
  • Service icon Commercial Panels
  • Service icon Financing Assistance

Website: https://solarsourceinc.com/
Address: 2954 E 14th St, Long Beach, CA 90804
Phone: 5628525626
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.7/5

Semper Solaris

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

Services Offered

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

Website: https://www.sempersolaris.com/locations/los-angeles/
Address: 10713 Norwalk Blvd, Santa Fe Springs, CA 90670
Phone: 2139844554
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

AmeriGreen Solar

  • Pros icon Free Quotes
  • 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 Solar Panel Upgrades
  • Service icon Consultation
  • Service icon Financing Assistance
  • Service icon Commercial Panels
  • Service icon Residential Panels
  • Service icon Energy Efficiency Audit

Website: http://www.amerigreensolar.com/
Address: 11331 Ventura Blvd #302, Studio City, CA 91604
Phone: 8447047336
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Powerfull Solar, Inc

  • 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 Financing Assistance
  • Service icon Permit Assistance
  • Service icon Maintenance
  • Service icon Consultation
  • Service icon Solar Panel Upgrades
  • Service icon Solar Carports
  • Service icon Residential Panels
  • Service icon Full-Service
  • Service icon Commercial Panels

Website: https://www.powerfullsolarinc.com/
Address: 5316 Venice Blvd., Los Angeles, CA 90019
Phone: 3108047617
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.4/5

Solar Optimum

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

Services Offered

  • Service icon Financing Assistance
  • Service icon Residential Panels
  • Service icon Battery Storage
  • Service icon Solar Panel Upgrades
  • Service icon Tesla Powerwall
  • Service icon Commercial Panels

Website: http://www.solaroptimum.com/
Address: 614 W Colorado St, Glendale, CA 91204
Phone: 8187451484
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

California Solar System

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

Services Offered

  • Service icon Residential Panels
  • Service icon Commercial Panels

Website: http://casolarsystem.com/
Address: 8202 Florence Ave, Downey, CA 90240
Phone: 2094432861
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

ProSolar California - Solar energy and Battery Storage Solutions

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

Website: https://prosolarcalifornia.com/
Address: 5701 Buckingham Pkwy Ste F, Culver City, CA 90230
Phone: 4243539997
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Green Integrations and Management 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 Commercial Panels
  • Service icon Residential Panels

Website: http://www.gimenergy.com/
Address: 3108 Glendale Blvd, Los Angeles, CA 90039
Phone: 8189005471

Methodology: How We Ranked the Best Solar Companies in Westmont

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


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 Westmont

For many readers, the decision of which solar installer to choose comes down to total costs.Some main factors that affect the cost of installing solar panels on your home and how much it could save you over time are:

  • Whether or not your roof gets a lot of direct sunlight: This, and the configuration of your roof, affects affect how much electricity your solar panels can generate.
  • 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 utility bills, which can generate an average of $28,000 of savings over 20 years.
  • The type of solar panel system you can buy: This depends on how much you’re willing to spend upfront.
  • Electricity consumption: The average household in Westmont doesn’t use much energy, and as a result may not see as many savings on their power bills.

Due to solar panels now being cheaper than ever as well as local and federal solar incentives, they are a cost-effective investment for many homeowners.

Solar Savings Calculator for {{ solarcalc.name }}

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

In an effort to increase solar panel installation and usage, federal and local governments – and even some utility companies – offer incentives to help make going solar more economically viable and accessible.Local solar incentive programs depend on the location and, sometimes, utility company. A lot of states offer rebates for home solar power systems, in addition to the federal solar tax credit. Our article on solar incentives has more in-depth information on the incentives you can find in Westmont.

Environmental Impact of Switching to Solar in Westmont

One of the reasons so many consider switching to solar power is to help bring down their environmental impact.But how much can using solar energy instead of traditional energy actually affect the environment? In a place like Westmont where commute times can be very long, using solar power can help offset some of your carbon dioxide emissions from driving a lot.Because solar panels don’t release carbon dioxide emissions into the atmosphere when producing electricity, they’re a good alternative to nonrenewable energy sources. In fact, you could expect to reduce your carbon dioxide emissions by about 50 pounds each year. For homeowners who want to help the environment, the upfront cost of solar is a small price to pay for offsetting your carbon emissions.

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 Westmont, CA Solar Company Rankings FAQs

What is the most reputable solar installation company in Westmont?

The top local solar company in Westmont is SunPower by Sun Solar-OC, with a rating of 3.00 stars.

Are solar panels really environmentally friendly?

Producing solar panels requires chemicals and produces toxic waste that can be harmful for the environment, which is the main negative thing about solar panels.

How long does it take for solar to pay for itself?

The average payback period for solar panel installation is about 8.4 years, but the exact period varies by the cost of electricity where you are, incentives and net metering programs.

What is the best type of solar panel?

The different types of solar panels are monocrystalline, polycrystalline and thin-film. Monocrystalline panels are more efficient but also cost more. Polycrystalline panels are cheaper but also less efficient than monocrystalline. Thin-film solar panels are flexible, so they can be used where the other types can’t, such as on curved surfaces or cars, but they are also less efficient. The best one for you depends on your budget, roof configuration and how much energy generation you want.

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.