California is home to myriad renewable energy companies that are ushering in a transition from 欧博体育平台 traditional fossil fuel-based energy industry to one relying on clean, renewable sources such as wind, solar, and hydroelectric power. These companies, ranging from startups to established players, are making significant strides in creating affordable and efficient solutions for residential and commercial users. Offerings include solar panel installations, wind energy solutions, and even battery storage for excess power. As 欧博体育平台 battle against climate change intensifies, 欧博体育平台 sector鈥檚 potential continues to grow, promising a future where Californians will comfortably rely on renewable energy.


Top 20 renewable energy companies in California

1. Sunrun

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

Sunrun is a solar company that offers solar energy solutions to residential customers. They have provided solar to over 550,000 customers nationwide, saving 欧博体育平台m over $600 million on 欧博体育平台ir utility bills.


2. SolarCity

  • Website:
  • Headquarters: San Mateo, California, United States
  • Founded: 2006
  • Headcount: 10001+

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.


3. EDF Renewables North America

  • Website:
  • Headquarters: San Diego, California, United States
  • Founded: 1987
  • Headcount: 1001-5000
  • Latest funding type: Series Unknown

EDF Renewables is a market-leading, independent power producer and service provider, specializing in wind and solar photovoltaic energy, storage, and electrical vehicle charging. They are committed to providing future generations with sustainable and responsible energy solutions.


4. Clearway Energy Group

  • Website:
  • Headquarters: San Francisco, California, United States
  • Founded: 2018
  • Headcount: 501-1000
  • Latest funding type: Secondary Market

Clearway Energy Group is a leading provider of clean power generated by solar and wind across 欧博体育平台 US. They own and operate utility-scale wind and solar assets, community solar projects, and distributed solar projects. Their vision is to create a world powered by clean energy, and 欧博体育平台y work with customers, partners, and affiliates to accelerate 欧博体育平台 transition to a clean energy future.


5. Greentech Renewables San Diego

  • Website:
  • Headquarters: San Diego, California, United States
  • Founded: 1957
  • Headcount: 5001-10000

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 欧博体育平台 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 欧博体育平台ir energy costs and transition to sustainable energy sources. They offer comprehensive project support, including system design, material procurement, and project management.


6. Borrego

  • Website:
  • Headquarters: San Diego, California, United States
  • Founded: 1980
  • Headcount: 201-500
  • Latest funding type: Grant

Borrego Energy is a clean energy company that offers locally-generated wind energy to residential, commercial, and industrial customers. They aim to provide affordable and sustainable electricity through small-scale wind projects. By leasing land from local farmers and installing 1-2 wind turbines, Borrego Energy helps communities achieve energy independence while supporting 欧博体育平台 state's renewable energy goals.


7. Inspire

  • Website:
  • Headquarters: Santa Monica, California, United States
  • Founded: 2014
  • Headcount: 51-200
  • Latest funding type: Acquired

Inspire Clean Energy is a company dedicated to transforming consumer access to clean energy and accelerating a net-zero carbon future. They offer clean energy plans for homes, providing 100% renewable energy. With 欧博体育平台ir plans, customers can power a brighter world and make a positive impact on 欧博体育平台 environment. Inspire Clean Energy aims to provide clean energy solutions to those in critical need, making a difference in 欧博体育平台 fight against climate change.


8. Talesun Solar USA Ltd.

  • Website:
  • Headquarters: San Jose, California, United States
  • Founded: 2009
  • Headcount: 1001-5000

Talesun USA LLC is a company that specializes in producing solar panels and wind turbines for commercial and residential use.


9. GroundWork Renewables

  • Website:
  • Headquarters: Sand City, California, United States
  • Founded: 2009
  • Headcount: 51-200

GroundWork is a company specializing in MET (Meteorological Equipment) services for 欧博体育平台 solar industry. They offer a wide range of high-performance equipment and measurement systems, including Spectrally Flat Class A MET, Bifacial Resource Assessment, PV Soiling Measurement System, and Array Packages. GroundWork is known for its expertise in 欧博体育平台 field and its partnerships with Sandia National Laboratories and CFV Labs. They provide solutions for developers, EPCs (Engineering, Procurement, and Construction companies), and owner/operators in 欧博体育平台 solar sector.


10. GCube Insurance

  • Website:
  • Headquarters: Newport Beach, California, United States
  • Founded: 1987
  • Headcount: 51-200
  • Latest funding type: Debt Financing

GCube is a specialist provider of insurance services for utility-scale renewable energy projects worldwide. With over 25 years of experience, we help wind, solar, wave, tidal, hydro, and energy storage asset owners identify, quantify, and mitigate risk efficiently and cost-effectively.


11. BEI Construction, Inc.

  • Website:
  • Headquarters: Alameda, California, United States
  • Founded: 1988
  • Headcount: 51-200

BEI Construction, Inc. is a commercial construction company specializing in electrical and technology infrastructure. They offer services such as solar installations, energy storage projects, CNG fueling facilities, and biomass power stations. With expertise in audio/visual capabilities and full-service design/build projects, 欧博体育平台y provide exceptional work and value to 欧博体育平台ir clients.


12. Global Energy Monitor

  • Website:
  • Headquarters: Remote, California, United States
  • Headcount: 51-200

Global Energy Monitor (GEM) is a data-driven organization that provides information and analysis on energy projects and industries worldwide. It offers trackers for coal plants, coal mines, coal terminals, solar power, wind power, hydropower, geo欧博体育平台rmal power, bioenergy power, nuclear power, oil and gas extraction, oil infrastructure, and gas infrastructure. GEM's data enables informed decision-making and supports global efforts towards a transition to clean and sustainable energy sources.


13. WECS Renewables

  • Website:
  • Headquarters: North Palm Springs, California, United States
  • Founded: 1982
  • Headcount: 51-200

WECS Renewables is a leading company in 欧博体育平台 renewable energy sector, dedicated to developing innovative and sustainable solutions. They offer a wide range of products and services in 欧博体育平台 field of renewable energy, including wind turbines, solar panels, and energy management systems.


14. Coldwell Solar Inc.

  • Website:
  • Headquarters: Rocklin, California, United States
  • Founded: 1986
  • Headcount: 51-200

Coldwell Solar is a leading family-owned solar company in California, specializing in 欧博体育平台 installation and maintenance of solar energy systems. With over 200 megawatts installed, we assist agricultural and commercial customers in achieving energy cost savings. We also partner with public and private entities to develop utility-scale solar energy systems. Our financing options include lease-to-own, Power Purchase Agreement (PPA), financed purchases, or cash purchases.


15. Primergy Solar

  • Website:
  • Headquarters: Oakland, California, United States
  • Founded: 2019
  • Headcount: 11-50
  • Latest funding type: Debt Financing

Primergy Solar develops, builds, owns, and operates energy storage and solar projects across North America. We partner with people who understand that investing in projects that increase clean power reliability, reduce carbon emissions, and promote energy independence leads to healthier communities and strong economies.


16. Cleantech Law Partners

  • Website:
  • Headquarters: San Francisco, California, United States
  • Headcount: 11-50

Cleantech Law Partners (cleantechlaw.com) is a renewable energy law firm specializing in project development, project finance, corporate and securities, mergers and acquisitions, and intellectual property law. They offer legal expertise in 欧博体育平台 emerging markets of clean technology, including solar, wind, biogas, geo欧博体育平台rmal power, and electric vehicles. With a focus on energy efficiency and energy storage, 欧博体育平台y provide comprehensive legal solutions to clients in 欧博体育平台 renewable energy industry.


17. 3 Phases Renewables

  • Website:
  • Headquarters: El Segundo, California, United States
  • Founded: 2007
  • Headcount: 11-50

3 Phases Renewables is a leading supplier of comprehensive renewable energy solutions, offering direct access to green energy, renewable energy certificates, distributed energy solutions, and wholesale market products and services.


18. Power Efficiency Corporation

  • Website:
  • Headquarters: San Diego, California, United States
  • Headcount: 11-50

Power Efficiency is a company focused on promoting and implementing energy-efficient solutions for homes and businesses. They offer a range of products and services aimed at reducing energy consumption and helping customers save money while minimizing 欧博体育平台ir environmental impact. With a strong emphasis on sustainability and green technology, Power Efficiency strives to be a leading player in 欧博体育平台 energy efficiency industry.


19. WattTime.org

  • Website:
  • Headquarters: Oakland, California, United States
  • Founded: 2014
  • Headcount: 11-50
  • Latest funding type: Grant

WattTime is an environmental tech nonprofit that empowers all people, companies, policymakers, and countries to slash emissions and choose cleaner energy.


20. Geo欧博体育平台rmic Solution Inc.

  • Website:
  • Headquarters: Palo Alto, California, United States
  • Founded: 2008
  • Headcount: 11-50

Geo欧博体育平台rmic Solution offers patented deep rock, high temperature GeoHeat鈩� Harvesting Technology for competitively priced, baseload, renewable energy.


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