The solar energy industry in California is comprised of diverse companies that offer innovative solutions to harness the sun's power. These companies offer various services ranging from solar panel installation and maintenance, to providing residential and commercial customers with sustainable, clean energy. They’re also stepping up their game in technological advancements to make solar energy more efficient and affordable. Their contribution has not only helped in reducing California's carbon footprint but also saved millions of dollars in utility bills. Looking forward, the industry is expected to continue growing as more people become environmentally conscious and seek renewable energy sources.


Top 23 solar energy companies in California

1. SolarCity

  • Website: solarcity.com
  • Headquarters: San Mateo, California, United States
  • Founded: 2006
  • Headcount: 10001+
  • LinkedIn

SolarCity offers solar energy solutions to residential and commercial customers, providing clean and sustainable power. Their services include installation, financing, and maintenance of solar panels.


2. Sunrun

  • Website: sunrun.com
  • Headquarters: San Francisco, California, United States
  • Founded: 2007
  • Headcount: 10001+
  • Latest funding type: Post Ipo Debt
  • LinkedIn

Sunrun is a solar company that offers solar energy solutions to residential customers. They have provided solar to over 550,000 customers nationwide, saving them over $600 million on their utility bills.


3. Enphase Energy

  • Website: enphase.com
  • Headquarters: Fremont, California, United States
  • Founded: 2006
  • Headcount: 1001-5000
  • Latest funding type: Post Ipo Equity
  • LinkedIn

Enphase is an energy technology company that prioritizes safety and quality. They offer microinverter systems, AC modules, and other products related to solar energy. They value innovation and strive to make solar energy smarter, simpler, and more affordable.


4. Sungevity

  • Website: sungevity.com
  • Headquarters: Oakland, California, United States
  • Founded: 2007
  • Headcount: 501-1000
  • Latest funding type: Post Ipo Debt
  • LinkedIn

Sungevity is a leading residential solar power company in California. They offer customized solar energy systems with battery storage options, providing savings and financing solutions. Their solar systems are designed to adapt to customers' changing needs and come with a guarantee of performance for 25 years. Sungevity also offers a solar lease program where they own, install, and maintain the solar system. With an easy-to-use monitoring app, customers can track their solar energy system in real-time.


5. Freedom Forever

Freedom Forever is a solar panel installation company that offers customized solar energy systems for residential customers. They guarantee the amount of energy that their systems produce for 25 years, making them the best in the industry. The company aims to provide freedom from high electric bills and help customers become more energy efficient.


6. Greentech Renewables San Diego

CED Greentech is a leading solar distributor in San Diego, offering a wide range of cutting-edge solar and wind technology solutions. They provide high-quality products and services across the renewable energy and energy efficiency industries. With a strong emphasis on customer service, CED Greentech is committed to helping businesses in California and beyond reduce their energy costs and transition to sustainable energy sources. They offer comprehensive project support, including system design, material procurement, and project management.


7. Semper Solaris

Semper Solaris is a company that offers solar power, roofing, battery storage, heating, and air conditioning services. They are dedicated to providing clean energy solutions and helping customers save on their electric bills.


8. CED Greentech

CED Greentech is a leading solar distributor offering a wide range of solar panels, inverters, energy storage solutions, and balance of system components. They provide trusted service, local inventory, and reliable delivery to their customers.


9. Sunworks, Inc.

  • Website: sunworksusa.com
  • Headquarters: Roseville, California, United States
  • Founded: 1983
  • Headcount: 201-500
  • Latest funding type: Private Equity
  • LinkedIn

Sunworks is a company that provides industry-leading commercial solar power solutions. They specialize in offering solar energy solutions for agricultural, commercial, industrial, public works, and residential sectors. Sunworks aims to help businesses reduce their electric bills, protect against fluctuating energy prices, and enhance their ESG programs.


10. Borrego Solar Systems

Borrego Solar is a renewable energy company that specializes in the design, development, installation, and maintenance of solar energy systems. They offer turnkey solutions for both residential and commercial customers, including solar panels, energy storage, and monitoring services.


11. Infinity Energy INC

Infinity Energy is a company that brings the future to your home with Solar. They offer solar services to help homeowners save money on electric bills, reduce carbon footprint, and improve home value. They specialize in quick installations and provide diverse financing options. Their services also include battery storage and roofing.


12. GAF Energy

  • Website: gaf.energy
  • Headquarters: San Jose, California, United States
  • Founded: 2019
  • Headcount: 201-500
  • LinkedIn

GAF Energy is a company that specializes in providing solar roofing solutions for homeowners. Their Timberline Solar™ product combines the functionality of a regular roof with clean electricity generation, using sleek and uniform solar shingles. They offer support services for GAF-certified roofers and aim to make solar roofing a simple and attractive option for homeowners.


13. Tesla Energy Solar Power

Tesla Energy Solar Construction Partners offers top-quality solar installation for residential and commercial properties. With their iron-clad power protection guarantee, customers can rely on safe and efficient solar systems. They provide financing options and incentives for a hassle-free transition to clean energy.


14. Citadel Roofing & Solar

  • Website: citadelrs.com
  • Headquarters: Vacaville, California, United States
  • Founded: 2015
  • Headcount: 201-500
  • LinkedIn

Citadel Roofing & Solar offers homeowners in California the opportunity to save energy and protect their homes with solar panels, energy storage, and roofing solutions.


15. SolarMax Technology

  • Website: solarmaxtech.com
  • Headquarters: Riverside, California, United States
  • Founded: 2008
  • Headcount: 201-500
  • Latest funding type: Series Unknown
  • LinkedIn

SolarMax is a leading provider of custom renewable energy solutions, offering a full range of services from roof replacement to solar panel installation. With $0 down and special financing, they help customers save on their energy bills while contributing to a clean and sustainable future.


16. Titanium Solar

  • Website: titaniumsolar.com
  • Headquarters: Rancho Cucamonga, California, United States
  • Founded: 2021
  • Headcount: 201-500
  • Latest funding type: Acquired
  • LinkedIn

Titanium Solar is a solar energy company that helps homeowners save money and increase the value of their homes. They offer customized solar panel systems and work with top financiers to provide the best rates for solar loans. Customers can save between 20k-200k by going solar.


17. better earth

  • Website: betterearth.solar
  • Headquarters: Los Angeles, California, United States
  • Founded: 2019
  • Headcount: 51-200
  • Latest funding type: Pre Seed
  • LinkedIn

Better Earth Solar is a company that specializes in providing solar energy solutions to homeowners. They offer a wide range of services, including solar panel installation, consultation, and education on the benefits of solar energy. With a focus on customer satisfaction and commitment to the environment, Better Earth Solar aims to empower individuals to embrace clean and sustainable energy sources.


18. Green Solar Technologies

Green Solar Technologies is a leading provider of renewable energy solutions. They specialize in bringing affordable and accessible solar power to homeowners across the nation. With their expertise and nationwide coverage, they are committed to helping homeowners achieve energy independence. Offering a range of high-quality American-made solar energy products, they make solar energy an affordable option for every homeowner.


19. Harness Power, Inc.

Harness Power is a solar company offering sustainable energy solutions for businesses and homeowners. They provide solar panels, free monitoring, and energy storage options to help customers reduce their carbon footprint and save on energy costs.


20. Baker Electric Home Energy

Baker Electric Home Energy is a California-based company specializing in solar energy solutions, home battery systems, heating and air conditioning, roofing, and electrical upgrades and repairs. With a focus on customer satisfaction, Baker Electric Home Energy employs a highly-trained team of consultants, technicians, and support crew to provide top-notch service. They offer financing options and help customers save on their energy bills through tailored solutions.


21. Dividend Finance

  • Website: dividendfinance.com
  • Headquarters: San Francisco, California, United States
  • Founded: 2013
  • Headcount: 51-200
  • Latest funding type: Acquired
  • LinkedIn

Dividend Finance is a leading provider of solar and home improvement financing solutions to property owners. They offer a simple application process with no paperwork required, top notch customer service, and transparency throughout the application process. Their platform allows homeowners to learn how to run an application and get loan agreements signed within minutes.


22. SunPower Corporation

  • Website: us.sunpower.com
  • Headquarters: Richmond, California, United States
  • Founded: 1985
  • Headcount: 1001-5000
  • Latest funding type: Post Ipo Equity
  • LinkedIn

We believe clean energy and backup storage should be accessible to everybody. That’s why SunPower designs all-in-one residential solar and storage solutions backed by personal customer service and the industry’s most comprehensive warranty. And with more than 35 years of dedicated solar experience, we’re the only U.S.-based solar company that’s been around longer than our 25-year warranty. Have questions or concerns? Our troubleshooting FAQs may help. http://ow.ly/vHTh50DVG5x Catch up on our blog: Catch up on our blog: https://us.sunpower.com/blog Contact us at customersuccess@sunpower.com for more help.


23. Center for Sustainable Energy (CSE)

EnergyCenter.org provides policy and regulatory insights to shape best practices for transforming markets to clean energy. They offer expertise in clean transportation, built environment, technology convergence, and programs that promote sustainability, equity, transparency, and resiliency.


Want to find more solar energy companies?


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