Semper Solaris
Review Semper Solaris is a large-sized solar panel installation company with its head office in El Cajon, California, and another 14 offices spanning the same state and one apiece in Texas and Florida. The company opened its doors in 2012 and has a projected annual revenue of $99 million. Apart from solar panel installation, Semper Solaris also handles roofing ser... Read More
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Silverline Solar
Review Silverline Solar is a small-sized solar panel installation company with its main office in Canoga Park, California, and another office in Las Vegas, Nevada. Established in 2014, the company provides grid-tied and hybrid system installations for residential projects and solely grid-tied for commercial ones. It is also part of the Silverline Home Remodeling I... Read More
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Solar Ventures
Review Solar Ventures is a global Independent Power Producer (IPP) with a focus on PV solar (photovoltaic). Though founded in Italy in 2005, they have focused on development outside of Italy, initially in France, with expansion to Emerging Markets in MENA and East South Asia. Solar Ventures works in project development, financing, construction and management of PV... Read More
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Sun-Tricity Solar Power
Service types
Residential Solar
Commercial Solar
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SunPower by Green Convergence
Review Sunpower by Green Convergence is a solar energy company in Valencia, California, United States. Their services include solar panel systems, installation, consultation, battery backup power, photovoltaic solar system, energy solutions, and home improvements.    The company has existed for over three decades, serving and providing customers with solar energy... Read More
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First American Solar
Review First American Solar is a small company with solar system installations and maintenance. The company is based in La Crescenta, California. It was established in 2015. The company offers its services to residential and commercial consumers in the Southern part of California.     First American Solar favors SolarEdge solar modules, comprised of half-cut cel... Read More
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Clean Solar
Review Clean Solar is a small-sized solar company located in San Jose, California, USA. It was established in 2007 and is the second-largest residential solar installer in the Bay Area. The company is also the 10x winner for the best installer in Silicon Valley, according to Bay Area News Group Mercury News.   Clean Solar prioritizes residential and commercial sol... Read More
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Alderete Solar
Review Alderete Solar is a small family owned and managed company that deals with solar system installations, and maintenance. It falls under a parent company, Alderete Pools that focuses on swimming pool construction, plumping and landscaping. Alderete Solar is a relatively new company that is around a decade old, although the parent company was founded in 1977... Read More
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Altadena Energy And Solar Inc.
Review Altadena Energy and Solar designs, installs, and maintains solar systems in the Los Angeles area. Their company started in 2008 and is located in Altadena, California. Its estimated revenue is around £370,000, and it is a small company, employing approximately three people at a single location. Their installations seem to be of a higher price than other com... Read More
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Black Moon Solar, Inc.
Review Founded in 1998, Black Moon Solar Inc. can be defined as a full-service solar contractor. Based in Oceanside, California, Black Moon Solar was founded by industry veterans who firmly believe in providing solar solutions to the surrounding public at attractive prices. This review set out to determine the validity of their claims and gain insight into their o... Read More
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Check the best Solar companies by city

Making an honest selection

At SolarEmpower, we aim to provide our readers with fair and impartial reviews that have been verified by our solar experts. The ratings of solar companies below are based on an intricate analysis of market standards, customer review ratings, and expert knowledge of the market. We believe in giving you all the information you will require, in the simplest form, so that you can make an informed and educated decision based on facts.

Key Points To Consider When Choosing A Solar Company 


Your home is one of your greatest assets so it only makes sense that you take extra care to ensure that your property and the solar system fitted is adequately covered in the unfortunate event of damage. A solid warranty will give you peace of mind that any damages to your home or solar system are fully covered without you needing to come out of pocket to have them repaired. SolarEmpower takes not only the length of the warranty into consideration, but also the level of coverage, as well as past experiences of real-life customers when providing a rating to ensure that you make the right choice. 

Cost VS Quality: 

Everyone wants to save money, but balancing cost and quality can be a difficult task if you do not have all the information required to make an informed decision. Due to the abundance of solar company options in California, SolarEmpower takes the guess work out of choosing a suitable company by conducting in-depth analysis of each company’s average cost against the market average, as well as customer reviews, to determine which companies offer a fair balance of cost and quality. 


The solar industry is more competitive than ever, with new companies entering the market every month. While newer companies may offer great prices and other promises, there is often very little information to base your decision on, apart from what the company advertises. At SolarEmpower, we conduct all the due diligence on each company, including factors such as its BBB ratings, customer complaints, and previous work samples, before we create our take on the company. Companies that have stood the test of time are always a safer option as they have earned their right to be considered as a worthwhile option. 

Best Products: 

In the solar world, reputation goes a long way. Certain solar manufactures leave no stone unturned in terms of developing the most advanced and innovative products that push the boundaries of technology and performance. We are always on the lookout for the best options in this regard while also taking real-life experience with these products into account.

The SolarEmpower View

Residents of California are spoilt for choice when it comes to the availability of solar providers and verified installers due to the state’s suitability for solar power generation.  From locally-based businesses to large global manufacturers, California has it all. We strongly recommend that customers that are considering going solar take advantage of the variety of companies on offer and gather as much information about them before making a final decision. 

Here are some of our top tips when selecting a solar company in California: 

  1. Gather as many quotations as possible
  2. Opt for companies that provide free consultations and quotes
  3. Favour companies that use well-known brands of solar equipment
  4. The cheapest option is not always the best option
  5. Pay attention to previous customer reviews
Is Solar worth it in California?

Without a doubt. With sunshine, sales and property tax exemptions, solar is an ideal investment in California.