California stands first in the US for solar energy output because of clear skies and sunny days. Solar power contributes around 20% of the state’s electricity. There are many benefits to go for solar, such as federal tax credit. With hundreds of solar installers/contractors in the state, it will be painful to select the right one. To make things easier for you, here are the best solar companies in Southern California:

1. Semper Solaris
2. Green Solar Technologies
3. Cosmic Solar
4. Sunluc
5. Future Energy Saver
6. SolarMax Technology
7. Sullivan Solar Power
8. LA Solar Group
9. SunPower by Stellar Solar
10. PacificSky Solar

All the above names are reliable solar installers in Southern California. And they are selected based on customer service and experience of the team. Whether you are a resident or business or local government, one of them will definitely fit all your needs.

Semper Solaris

Semper Solaris is one of the best solar panel contractors in Southern California. Founded in 2012 by veterans from the US Marine Corps, the company provides residential solar installation services. It includes solar panel installation, solar maintenance, and roofing. Additionally, it provides storage batteries (Tesla Powerwall, LG Chem), and heating & air conditioning systems.

In Southern California, Semper Solaris has a head office in El Cajon. It also has offices in San Diego, Santa Fe Springs, Santa Ana, Riverside, Palm Desert, and Bakersfield.

Website	https://sempersolaris.com/
Headquarters	El Cajon, California, US
Products/services	Solar panels, roofing, storage batteries, heating & air conditioning systems
Area served	California
No. of employees	150+
Founded on	March 9, 2012
Key people	John Almond (CEO, co-Owner), Kelly Shawhan (co-Owner)

Green Solar Technologies

Green Solar Technologies is a California-based solar installer for residents and commerce. In 10 years, the company has grown to 200+ employees. Its solar services cover solar panel installation, racking systems, and solar roofing. Further, the company also gives tailor-made financing solutions for individuals and businesses.

Green Solar has served hundreds of people across the US. And it has physical offices in 11 states: California, Arizona, Nevada, New Mexico, Utah, and Wyoming. Other nonwestern states are New Orleans, Mississippi, Missouri, North Carolina, and Pennsylvania.

Website	https://greensolartechnologies.com
Headquarters	North Hollywood, California, US
Products/services	Solar panels, roofing, inverters, racking systems, solar financing
Area served	California, Arizona, New Orleans, Mississippi, Missouri, Nevada, New Mexico, North Carolina, Pennsylvania, Utah, Wyoming
No. of employees	200+
Founded in	2010
Key people	Nicki Zvik (CEO, Founder)

Cosmic Solar

Cosmic Solar is a regional solar installer in Southern California. From design to installation, it provides complete services for homes and businesses. Services include solar installation, solar hot water system, and pool water heating system. Besides the aforementioned, Cosmic Solar offers a total line of roofing services—inspection, repair, installation, and maintenance.

Cosmic Solar is also an elite dealer of SunPower, an American premium solar cell manufacturer. The company has completed several successful projects in Southern California.

Website	https://cosmicsolar.com
Headquarters	Vista, California, US
Products/services	Solar panels, roofing, solar hot water system, pool water heating system
Area served	California
No. of employees	15+
Founded in	2004
Key people	Bahram Shadzi (President, Founder)

Sunlux

Sunlux is a local solar contractor. Founded in 2015, the company has shown steady growth and had recorded sales of over $2 million in the first year. Today, the company provides full solar service, from design to procurement to installation. Apart from solar panels, it also serves solar financing and battery storage (Tesla Powerwall) solutions.

Sunlux’s customers comprise individual homeowners, residential builders, and small-to-medium size commercial entities. The company is active in California and Texas. In California, it works in Los Angeles, Irvine, Rancho Santa Margarita, San Diego, Valencia, and Bakersfield. In Texas, it is available in Austin and San Antonio.

Website	https://sunlux.com
Headquarters	Rancho Cucamonga, California, US
Products/services	Solar panels, storage batteries, solar financing
Area served	California, Texas
No. of employees	50+
Founded in	January 2015
Key people	Guillermo Santomauroi (CEO, co-Founder), Joe Benko (President, co-Founder)

Future Energy Saver

Future Energy Saver is a four-decade-old company serving the people of California. The company offers American-made solar panel systems and roofing services to its customers. Other services offered are storage batteries, EV charging stations, heating & air conditioning, and exterior coating.

Since 1978, Future Energy Saver has completed more than 10,000 solar projects. It is popular for its exceptional customer service and has been honored by several awards. Its offices are in Elk Grove, Sacramento, and Rancho Cucamonga.

Website	https://energysavers.com
Headquarters	Elk Grove, California, US
Products/services	Solar panels, batteries, roofing, EV charging, heating & air conditioning
Area served	California
No. of employees	60+
Founded in	1978
Key people	Jeffrey Adkins (CEO, Founder)

SolarMax Technology

SolarMax Technology is one of the best known solar installers in Southern California. With a 165,000 sq ft plant in Riverside, California, the company provides full solar service. It has finished 12,000+ residential and commercial projects since the inception. Unlike many, the company designs, engineers, and assembles its own branded panels. So, all panels are American made.

Other products sold by SolarMax include inverters, energy storage solutions, and electric car charging solutions. Since 2010, the company has been offering solar financial services. It is operating in several areas of Southern California, especially in Orange, Los Angeles, San Bernardino, and Riverside.

Website	https://solarmaxtech.com
Headquarters	Riverside, California, US
Products/services	Solar panels, batteries, inverters, EV charging systems, solar financing services
Area served	California
No. of employees	200+
Founded in	2008
Key people	David Hsu (CEO, co-Founder)

Sullivan Solar Power

Sullivan Solar Power is a leading regional solar installer in Southern California. Since 2006, the company has installed 9,000 solar systems having a combined capacity of 56.4 MW. Besides photovoltaic systems, Sullivan Solar also delivers storage batteries and EV charging solutions. The company has diverse customers: homeowners, builders, commercial entities, and governments.

With offices in San Diego, Irvine, and Riverside, Sullivan serves its customers throughout Southern California.

Website	https://sullivansolarpower.com
Headquarters	San Diego, California, US
Products/services	Solar panels, batteries, EV chargers
Area served	California
No. of employees	140+
Founded in	2004
Key people	Daniel Sullivan (CEO, Founder)

LA Solar Group

LA Solar Group is a solar contractor from Los Angeles. The company has residential as well as commercial clients. Since its establishment in 2012, the company has completed 7680+ projects, installed 52.5 MW of photovoltaic systems. In addition to solar panels, LA Solar provides batteries, inverters, and solar shingles. Furthermore, the company offers roofing, financing, EV charging, maintaining services.

Started with two employees, the company has now grown into 170+ employees and works in California, Nevada, and Texas. In California, it has a physical presence in Los Angeles and Fremont. LA Solar Group also has an online store, where it sells solar and electric equipment.

Website	https://la-solargroup.com
Headquarters	Los Angeles, California, US
Products/services	Solar panels, batteries, shingles, EV chargers, inverters
Area served	California, Nevada, Texas
No. of employees	170+
Founded in	2012
Key people	Ara Petrosyan (CEO, Founder)

SunPower by Stellar Solar

Stellar Solar is one of the oldest solar companies in Southern California. The company is consistently ranked among the best solar installers in San Diego. Since 1998, it has completed over 7,000 residential projects and installed 20 MW of power for commerce.

Stellar Solar sells solar panels manufactured by SunPower to all its customers. The company has also installed PV systems for churches, warehouses, hospitals, auto dealers, schools, etc.

Website	https://stellarsolar.net
Headquarters	Oceanside, California, US
Products/services	PV solar systems, panels, batteries (Tesla Powerwall), maintenance
Area served	California, Nevada, Texas
No. of employees	50+
Founded in	1998
Key people	Kent Harle (President, Founder)

PacificSky Solar

PacificSky Solar provides solar panel installation services to the people of Southern California. The company installs SunPower panels and has finished several residential projects in the region. Other products offered are storage batteries and backup generators. Additionally, PacificSky provides reroofing services.

It has an office in Los Angeles and serves its customers in the entire region.

Website	https://pacificskysolar.com/
Headquarters	Canoga Park, California, US
Products/services	Solar panels, batteries, generators, reroofing
Area served	California
No. of employees	50+
Founded in	2015
Key people	Rafi Pagus (CEO, Founder)