10 Best Solar Companies in Southern California (2026 Guide)

Southern California is one of the absolute best places in the country to invest in solar energy. Between the endless sunshine, constantly climbing utility rates, and the growing need for reliable backup power, taking control of your own electricity just makes sense.

While the technology itself has come a long way, picking the right installer can still be a tough decision. A home solar system is a long-term commitment that affects your energy bills, power reliability, and home value for decades. You want a partner that does clean work, uses premium equipment, backs it up with a real warranty, and actually answers the phone when you call.

To help you sort through the noise, we're breaking down the top solar installers in Southern California based on their local reputation, manufacturer certifications, history, and customer care.

1. OC Solar

Headquarters: Irvine, CA Founded: 2016 Services: Solar - Batteries - Roofing - EV Charging - Electrical

OC Solar has established itself as one of Southern California's premier solar installers by delivering a customer-first experience backed by premium equipment and expert craftsmanship. The company specializes in custom solar systems, Tesla Powerwall 3, Tesla Solar Roof, roofing services, and EV charging solutions. As a proud partner of the Anaheim Ducks, they are deeply rooted in the local community and are trusted across Orange County.

As a certified partner of Tesla, Enphase, and SolarEdge, OC Solar provides homeowners with access to some of the most trusted technologies in the industry. OC Solar has also earned awards from Panasonic, Consumer Affairs, the Orange County Business Journal, Solar Power World, and more.

Pros: - Tesla, Enphase, and SolarEdge certified - 25-year workmanship warranty - Award winning - Strong local reputation and customer service

2. Sunrun

Headquarters: San Francisco, CA Founded: 2007 Services: Solar - Batteries - Energy Monitoring

As the largest residential solar provider in the country, Sunrun is a household name. They are best known for their popular third-party financing models, like solar leases and power purchase agreements.

Pros: - Nationally recognized brand - Flexible financing programs - Battery storage options available

Potential Drawback: Customer experiences can vary depending on region and installation partner.

3. Baker Electric Home Energy

Headquarters: Escondido, CA Founded: 1938 Services: Solar - Batteries - Electrical - EV Charging

Built on the foundation of one of Southern California's oldest electrical contracting companies, Baker Electric Home Energy brings high-level engineering standards to residential solar. They are a reliable choice if you prioritize technical expertise and long-term company stability.

Pros: - Backed by a company with decades of experience - Strong electrical and battery expertise - Excellent reputation throughout Southern California

Potential Drawback: Premium service and experience often come with higher project costs compared to some competitors.

4. Stellar Solar

Headquarters: San Diego, CA Founded: 1998 Services: Solar - Batteries

Stellar Solar has been around for over two decades, focusing heavily on custom solar and battery storage layouts. They are known for taking a consultative, educational approach with homeowners rather than using high-pressure sales tactics.

Pros: - Long-standing local reputation - Customized system designs - Strong customer reviews

Potential Drawback: The company operates within a smaller service footprint than some larger competitors.

5. Sunlux

Headquarters: Anaheim, CA Founded: 2015 Services: Solar - Batteries - Roofing

Sunlux offers residential solar, battery storage, and roofing services throughout California. The company is known for providing homeowners with multiple equipment and financing options to fit different budgets.

Pros: - Flexible financing solutions - Roofing services available - Wide variety of equipment choices

Potential Drawback: Service quality may vary depending on project location and installation volume.

6. Semper Solaris

Headquarters: El Cajon, CA Founded: 2012 Services: Solar - Batteries - Roofing - HVAC

Semper Solaris has become one of California's most recognizable solar brands. The company offers solar installations alongside roofing and HVAC services, creating a one-stop shop for many homeowners.

Pros: - Large service area - Multiple home improvement services - Strong brand recognition

Potential Drawback: The larger company structure may feel less personal than smaller local providers.

7. NRG Clean Power

Headquarters: California Founded: 1987 Services: Solar - Batteries - Roofing - EV Charging

With decades of experience in the renewable energy industry, NRG Clean Power offers a broad range of residential energy solutions. The company is particularly well known for battery storage and EV charging integrations.

Pros: - Extensive experience - Battery and EV expertise - Comprehensive energy solutions

Potential Drawback: Premium system configurations can result in higher project costs.

8. Vasco Solar

Headquarters: Newport Beach, CA Founded: 1982 Services: Solar - Batteries

Vasco Solar is one of Orange County's true local pioneers, having installed systems for over forty years. They operate with a highly personal, boutique business model, which means you deal directly with seasoned local experts rather than automated corporate call centers.

Pros: - More than 40 years of industry experience - Highly personalized, hands-on customer service model - Strong Southern California presence

Potential Drawback: The company has a smaller geographic footprint than some competitors.

9. Ameco Solar

Headquarters: Sun Valley, CA Founded: 1974 Services: Solar - Batteries - Commercial Solar

Ameco Solar is one of the absolute longest-operating solar companies in the entire state. With over 50 years of experience under their belt, they have seen the industry change from the very beginning and have built a rock-solid reputation for clean, reliable setups. If you want an installer that has proven they can survive every shifting utility rule and economic cycle, Ameco is as steady as they come.

Pros: - More than 50 years of industry experience - Strong residential and commercial expertise - Long-standing reputation in California

Potential Drawback: The company has a lower public profile than some of the larger regional and national solar brands.

10. Forme Solar

Headquarters: Irvine, CA Founded: 2017 Services: Solar - Batteries - Electrical - Solar Repair

Forme Solar stands out by mastering both new installations and system repairs. They are a fantastic option if you want a team that knows the technical, moving parts of a system inside and out.

Pros: - Highly specialized in solar repair, troubleshooting, and system upgrades - Excellent, responsive communication throughout the process - Strong battery storage expertise

Potential Drawback: Because they dedicate a massive portion of their team to fixing and maintaining older systems built by other companies, their scheduling availability for brand-new installations can sometimes fill up fast.

What Should You Look for in a Solar Company?

When evaluating competitive solar proposals, look beyond the baseline price per watt. The highest-performing systems are backed by companies that provide an optimal balance of the following criteria:

• Workmanship Warranties: Ensure the structural and physical installation components are covered by long-term labor warranties, not just hardware manufacturer warranties.
• Installer Certifications: Look for official partner designations from primary technology manufacturers like Tesla, Enphase, or SolarEdge, which indicate specialized training and priority technical support.
• Local Support Infrastructure: A contractor with an active regional presence can deploy service technicians quickly if maintenance or system troubleshooting is required.
• Historical Track Record: Choose companies with verified operational longevity in Southern California to ensure they will remain in business to honor their multi-decade warranties.

Obtaining multiple detailed estimates allows you to compare structural exclusions, financing terms, and exact hardware specifications to determine true long-term value.

Ready to Go Solar?

The best solar company for your home really depends on your specific goals, your roof layout, your budget, and what you want out of a system. Every installer on this list has a proven track record of helping homeowners break away from traditional utility reliance.

OC Solar offers the experience, certifications, and customer-focused approach homeowners need to make a confident decision. From solar and batteries to roofing and EV charging, OC Solar helps Southern California homeowners take control of their energy future with solutions built to last.