15 Best Solar Companies in El Cajon, CA (2023 Reviews)

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

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

Average El Cajon homeowner saves $2,619/year with solar panels

By EcoWatch Local Advisors

Data Analysis: James Savino

Ranking Methodology: Karsten Neumeister

Updated October 25, 2023

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 El Cajon

If you're a homeowner looking to take advantage of the solar incentives in El Cajon, it can be challenging to narrow down which installer to decide on. But, it's worth it since adopting solar energy is typically a good choice. Solar power isn't just good for the environment — your wallet will benefit too. Once you switch to solar power, you can save an average of $31,000 over 20 years, and this doesn't even include incentives.


As you start your search for the best solar companies in El Cajon, you'll find that there are a great number of providers to choose between. So, we've accumulated an expertly curated list of the top solar companies in the area.We recommend shopping around to get quite a few quotes and comparing them to see which is the best installer for your home. To get free quotes from the best solar companies in El Cajon, 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 Warranty Coverage

ADT Solar

★★★★★
4.0

  • Industry-leading warranty coverage
  • Expansive service area
  • Some reported communication issues
  • No leases or PPAs

EcoWatch Rankings for Solar Companies in El Cajon

Best Local Installer
ecowatch badge icon

EcoWatch Rating

4.7/5

SunPower by Milholland Electric

  • 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 Full-Service
  • Service icon Consultation
  • Service icon Residential Panels
  • Service icon Tesla Powerwall

Website: https://www.milhollandelectric.com/
Address: 1475 Cuyamaca St, El Cajon, CA 92020
Phone: 6197321198
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

SunPower by Precis

  • Pros icon Clear Pricing Policy
  • Pros icon Prompt Service Delivery
  • 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 Commercial Panels
  • Service icon Residential Panels
  • Service icon Permit Assistance
  • Service icon Battery Storage

Website: http://www.precissolar.com/
Address: 36625 Kevin Rd STE 147, Wildomar, CA 92595
Phone: 9514762975
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

ADT Solar

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

Website: https://www.adtsolar.com/location/california/
Address: 38340 Innovation Ct Bldg G Suite 704-706, Murrieta, CA 92563
Phone: 9514762240
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Your Energy Pros

  • 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 Commercial Panels
  • Service icon Energy Efficiency Audit

Website: https://www.yourenergypros.com/
Address: 8614 Alpine Ave, La Mesa, CA 91941
Phone: 8586336749
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Orange Solar

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

Services Offered

  • Service icon Residential Panels
  • Service icon Commercial Panels
  • Service icon Battery Storage
  • Service icon Solar Panel Upgrades

Website: http://orange4solar.com/
Address: 270 E Douglas Ave, El Cajon, CA 92020
Phone: 6197285585
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

Sun Diego Solar Construction LLC

  • 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 Permit Assistance
  • Service icon Battery Storage
  • Service icon Commercial Panels

Website: http://sundiegosolarconstruction.com/
Address: 10925 Hartley Rd # F, Santee, CA 92071
Phone: 6194034114
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Christian Solar

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

Website: https://christiansolar.com/el-cajon-solar-power-company/
Address: 1226 Greenfield Dr STE A, El Cajon, CA 92021
Phone: 6196125363
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Higher Power Solar

  • 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 Residential Panels
  • Service icon Maintenance
  • Service icon Battery Storage
  • Service icon Cleaning
  • Service icon Consultation
  • Service icon Off-Grid Solar Systems
  • Service icon Solar Panel Upgrades

Website: https://higherpowersolar.com/higher-power-solar-santee
Address: 10201 Mission Gorge Rd Suite 478e, Santee, CA 92071
Phone: 6193299570
Outstanding Local Installer
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EcoWatch Rating

4.9/5

San Diego Solar Surfers

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

Website: https://sdsolarsurfers.com/
Address: 3834 Pendiente Ct APT S207, San Diego, CA 92124
Phone: 8582983727
Outstanding Local Installer
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EcoWatch Rating

4.9/5

SolarQuest

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

Services Offered

  • Service icon Residential Panels
  • Service icon Consultation

Website: https://www.solarquestpower.com/landing/
Address: 5173 Waring Rd #118, San Diego, CA 92120
Phone: 6192928062
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.9/5

Flagstar Energy

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

Services Offered

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

Website: http://www.flagstarenergy.com/
Address: 2878 Camino del Rio S UNIT 412, San Diego, CA 92108
Phone: 8886022272
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.9/5

Sky source solar electric

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

Services Offered

  • Service icon Commercial Panels
  • Service icon Skilled Repairs
  • Service icon Solar Carports
  • Service icon Consultation
  • Service icon Residential Panels
  • Service icon Solar Panel Upgrades

Website: https://skysourcesolarelectric.com/
Address: 9810 Costa Lago St, Spring Valley, CA 91977
Phone: 8583420226
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Neat Solar Panel Cleaning

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

Services Offered

  • Service icon Residential Panels

Website: http://neatsolarpanelcleaning.com/
Address: 6647 Springfield St, San Diego, CA 92114
Phone: 6199197576
Outstanding Local Installer
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EcoWatch Rating

4.8/5

Advanced Solar Cleaning

  • 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 Commercial Panels
  • Service icon Cleaning
  • Service icon Residential Panels
  • Service icon Maintenance

Website: http://www.advancedsolarcleaninginc.com/
Address: 12234 A Ave, Lakeside, CA 92040
Phone: 6196552844
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.8/5

Fairpower

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

Services Offered

  • Service icon Residential Panels

Website: http://fairpower.net/
Address: 1367 Rex Ln, El Cajon, CA 92021
Phone: 6199330720

Methodology: How We Ranked the Best Solar Companies in El Cajon

EcoWatch's solar experts analyzed each solar company in El Cajon 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 El Cajon


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 El Cajon

While solar panels can save you money on energy over time, it's necessary to consider the startup 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:

  • How much energy costs for you: The typical family in El Cajon shells out around $920 a year on power alone, so you could end up with that much in savings.
  • The amount of sunlight your roof gets: If your roof doesn't see much direct sunlight, your solar system won't be able to generate as much energy, which will give you lower savings on electric bills than a roof that gets a lot of sunlight.
  • average energy usage: The more power your home uses on average and the steeper your current power bills are, the more money you could save by switching to solar.
  • Incentives: The federal solar investment tax credit currently lets you lower your taxes by 30% of the project cost. Your state and city may also have various incentives that you can take advantage of. Plus, you can save about $31,000 over 20 years on your utility bills, without incentives.

So is buying solar panels worth it? Whether you want to reduce your electric bills, carbon emissions or both, solar panels are a solid investment for many El Cajon homeowners.

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Solar Incentives in El Cajon

There are many good reasons why adopting solar power is beneficial. One of them consists of some government incentives you can take advantage of.There are a lot of federal, state and local rebates and tax credits that may earn you some money back after buying a qualifying system. For detailed information about local incentives, visit our article on solar incentives.

Environmental Impact of Switching to Solar in El Cajon

Many want to do their part to help save the planet, which for many is the main reason for installing a solar system.You may be wondering — how much does going solar do for the planet anyway? An important thing to keep in mind is your overall carbon footprint. For example, if you have a long commute, your footprint may be bigger, so switching to solar energy for your home can help offset that.Once you go solar, your carbon emissions can be reduced by about 50 pounds a year. As you can see, trading traditional energy for solar has so many other rewards besides saving money. One of the primary ones is that you can help save the planet 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 Warranty Coverage

ADT Solar

★★★★★
4.0

  • Industry-leading warranty coverage
  • Expansive service area
  • Some reported communication issues
  • No leases or PPAs

EcoWatch's El Cajon, CA Solar Company Rankings FAQs

What is the best solar panel installation company in El Cajon?

In El Cajon, CM Solar Electric is the best local solar company. Our team of experts rates it 4.03 stars, so it's a solid choice if you're planning to add solar panels to your home.

Are solar panels actually good for the environment?

Solar panels can be detrimental for the environment when manufacturers use toxic chemicals when they're made. Chemicals can make solar panels difficult to recycle safely once they've reached the end of their lifespan. Making solar panels 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 getting solar panels?

Solar panels generally pay for themselves in about 5.8 years, but your solar payback period will vary based on your utility costs. The higher your typical electricity bill, the faster your solar panel system will recoup your installation costs.

When is the best time of year to install solar panels?

You can install solar panels whenever it's convenient for you, but consider doing so in the winter when there's less demand. With fewer homeowners contracting installers, you could potentially see faster installation times and more savings.

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.