Best Solar Companies in California: Top 10 List

California is known for its progressive attitude towards renewable energy. The state has set a goal to generate 100% of its electricity from clean energy sources by the year 2045. Solar power is one of the key components in California’s clean energy portfolio, and as such, there are many companies that have sprung up over the years to meet the demand.

Best Solar Companies in California: Top 10 List

If you’re looking to install solar panels on your home or business in California, it can be overwhelming to choose from so many options. That’s why we’ve put together this list of the top 10 best solar companies in California.

1. Sunrun

Sunrun is a well-established solar company that operates across the United States. They offer a range of services including solar panel installation, battery storage, and maintenance. Sunrun makes it easy for customers to switch to solar power with their flexible payment plans and excellent customer service.

2. SunPower

SunPower is another popular solar company that has been around since 1985. They specialize in high-efficiency solar panels that can produce more power than traditional panels. SunPower offers both residential and commercial solutions and has won numerous awards for their sustainable practices.

3. Vivint Solar

Vivint Solar provides custom-designed solar systems for homes and businesses in California and other states across the nation. They use high-quality equipment and provide monitoring services to ensure optimal performance from your system.

4. Tesla Solar

Tesla is a household name when it comes to electric cars, but they also have an excellent reputation within the solar industry. Tesla Solar provides complete solar solutions for homeowners with their cutting-edge technology and sleek design.

5. Semper Solaris

Semper Solaris is a veteran-owned-and-operated company that specializes in residential solar panel installations in Southern California. They offer financing options and warranties on all their installations, making them a top choice for homeowners.

6. Sunline Energy

Sunline Energy is a San Diego-based solar company that provides affordable and sustainable energy solutions for homes and businesses across Southern California. They are known for their exceptional customer service and competitive pricing.

7. Solar Optimum

Solar Optimum is an established solar company that has been serving California residents since 2008. They offer a range of residential and commercial solar solutions, including battery storage systems and backup generators.

8. PetersenDean

PetersenDean has been in business since 1984 and offers a wide range of energy-efficient products, including solar panels, roofing, and HVAC systems. They have an excellent reputation for quality workmanship and customer service.

9. Horizon Solar Power

Horizon Solar Power is one of the fastest-growing solar companies in California and has installed over 7,000 systems to date. They offer free consultations to help customers determine if solar power is right for them, as well as financing options to make the transition more affordable.

10. Westhaven Solar

Westhaven Solar is a Bakersfield-based solar company that provides complete solar solutions for homes, farms, and commercial properties across Central California. They use high-quality equipment from reputable manufacturers such as LG, Enphase, and IronRidge to ensure the longevity of your system.


Choosing the best solar company in California can be challenging because there are so many options available. However, by doing your research and considering factors such as experience, affordability, equipment quality, warranties offered, and customer service ratings – you can find the right solar company that meets your needs. This list of top 10 best solar companies in California should provide you with an excellent starting point in your search for the perfect provider!


What are the top 10 best solar companies in California?

The top 10 best solar companies in California are SunPower, Tesla, Sunrun, Vivint Solar, Sullivan Solar Power, PetersenDean Roofing & Solar Energy, Semper Solaris, Horizon Solar Power, NRG Clean Power, and Creative Energies.

Why is SunPower considered one of the best solar companies in California?

SunPower is considered one of the best solar companies in California due to their high-efficiency solar panels that produce more energy in less space than other conventional panels. They also have a long-lasting product warranty and excellent customer service.

What sets Tesla apart from other solar companies in California?

Tesla’s innovative technology and design make them stand out from other solar companies in California. Their solar roofs integrate seamlessly with homes and offer a sleek and modern appearance. Additionally, they provide energy storage solutions through their Powerwall batteries.

What makes Sunrun a great option for homeowners looking into getting solar panels?

Sunrun offers flexible financing options for homeowners who want to install solar panels but are hesitant due to the upfront cost. They also have a competitive price point and an excellent reputation for quality installation and customer service.

Why should homeowners consider Vivint Solar for their solar needs?

Vivint Solar offers customized solutions based on each customer’s unique energy needs and consumption habits. Their panels are designed to maximize energy production while minimizing visual impact on your home’s appearance. They also provide maintenance services to ensure your system is running at optimal performance levels.

How does Sullivan Solar Power go above and beyond for their customers?

Sullivan Solar Power provides personalized attention to each customer by assigning a project manager who will oversee the installation process from start to finish. They also offer ongoing support, including system monitoring and maintenance, to ensure their clients are satisfied with their solar investment.

What sets PetersenDean Roofing & Solar Energy apart from other solar companies?

PetersenDean is one of the few solar companies in California that also provides roofing services, allowing them to offer integrated solutions for homeowners. Additionally, their panels are made in the USA, providing customers with a sense of pride in supporting local businesses.

What do Semper Solaris customers appreciate most about the company?

Semper Solaris’ exceptional customer service and quality installation have earned them high ratings among customers. They also offer various financing options and provide a comprehensive warranty that covers both product and installation for 25 years.

Why should homeowners choose Horizon Solar Power for their solar needs?

Horizon Solar Power offers a variety of financing options tailored to different budgets and lifestyles. They also provide complimentary consultations to determine the best solution based on each customer’s specific needs. Their excellent customer support and efficient installation process make them a top choice among homeowners.

What makes NRG Clean Power stand out from other solar companies?

NRG Clean Power’s commitment to sustainability goes beyond offering eco-friendly energy solutions. They also prioritize environmental stewardship by reducing waste during the installation process and minimizing their carbon footprint as a company overall. This dedication resonates with clients who share similar values regarding sustainable living.

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