Discover the Best Solar Companies in California

tree beside house under sky
Photo by Vivint Solar on Unsplash

One of the best ways to power a home or business while minimizing your environmental footprint is by harnessing the renewable energy provided by the sun. The good news for Californians is that the state has long been on the leading edge of green energy; as you seek solar companies in California, you'll find that there are plenty of options choose from.

In this article, we'll look at some of the top solar energy companies servicing homeowners in Los Angeles, Sacramento, San Diego, San Francisco and throughout CA.

Our 2021 Picks for Solar Installers in California

  • NRG Clean Power
  • Sunworks Solar Power
  • Sunrun
  • Semper Solaris
  • Stellar Solar
  • Tesla
  • Vivint Solar
  • Sunlux Energy
  • Solar Optimum
We understand that for most homeowners, the decision to invest in a solar energy system comes down to cost. To see how much you would pay to install a solar panel system on your roof, you can get a free, no-obligation quote from a top solar company near you by filling out the form below.

Comparing Top California Installers

NRG Clean Power

NRG Clean Power claims to do solar "the smart way," and they have a great reputation in the solar industry. They make solar panels accessible and affordable, without any financing gimmicks or middlemen to complicate the process. They have an admirable vision of decentralizing and deregulating power supplies, making it easier for all of us to participate in the clean energy revolution.

NRG Clean Power offers solar roofing, energy storage, and EV charging solutions, as well as flexible payment and financing options.

Sunworks Solar Power

Sunworks Solar Power is a company that supplies affordable and reliable solar energy solutions to homes, businesses, and even farms across the state. They actually boast more than 30 years of experience in the solar space, which makes them a true standard-bearer within the industry. In addition to some significant home energy savings, Sunworks Solar Power can also benefit you by providing a generous 25-year warranty.

There's a lot to love about Sunworks, specifically that they handle the entire process from start to finish.


When it comes to flexible, affordable solar solutions, Sunrun is a great option. You can actually get financing for your panels and other equipment with zero money down, making it incredibly easy to get up and running. Additionally, Sunrun assists with claiming any tax incentives that are available to you, either at a state level or the federal level. They also do an excellent job customizing their services, helping each homeowner get exactly the solar setup they need.

Learn why Sunrun is one of California's photovoltaic leaders.

Semper Solaris

Semper Solaris is owned and operated by American military veterans, which is just one of many reasons why it ranks so high on our list. We also love the fact that the company showcases a wide range of solar services, including heating and air conditioning assistance, solar batteries, and of course home installation. Also note that Semper Solaris offers service across the state, with offices in San Diego, Inland Empire, Fresno, Concord, Los Angeles, Bakersfield, and beyond.

Semper Solaris is easily one of the best solar providers in the state, and a great option for solar and battery storage installation.

Stellar Solar

Stellar Solar is primarily available in the San Diego area. They offer some incredible solar deals, including affordable equipment fees, low-interest financing, and access to some generous rebates and tax credits. Stellar Solaris has been around since 1998, and in that time, they have assisted more than 12,000 customers go solar.

If you live the San Diego area, Stellar Solar is one of the best solar contractors available.


You may know Tesla from their electric cars. What you might not know is that Tesla has brought a similar sophistication to the solar energy industry, developing premium solar panels that have been adopted by other solar providers in the state. Of course, you can always go straight to the source, having your panels installed directly by Tesla themselves. Tesla also guarantees to match any price on solar systems in order to offer the lowest prices in the country.

Tesla's panels feature sleek designs, ensuring that your solar system isn't just functional, but also aesthetically pleasing.

Vivint Solar

Vivint Solar is an installer that really excels in customization. They understand that no two homes are quite alike, and they tailor their solar designs accordingly. Additionally, their top-notch panels are backed with a 25-year warranty, which should give you ample assurance as you consider choosing Vivint for your home energy needs.

Vivint Solar also provides a complete service experience to help you with everything from system design to permits and installation.

Sunlux Energy

Sunlux Energy delivers solar energy solutions in California as well as Texas, and they really have a lot to offer. Specifically, they can furnish solar panels and batteries, full home automation options, and even EV charging stations for your garage. They give free consultations, and they come backed with a great portfolio of online reviews.

Sunlux Energy is great for their full-service process, system warranty, and solar financing options.

Solar Optimum

Solar Optimum is an award-winning company known for its professional installation services, including a distinction as the 2020 Installer of the Year for Panasonic solar panels. They also back their products with reliable warranties and guarantees.

Solar Optimum offers true solar expertise, and their 25-year warranty covers the panels, inverter, racking, roof, and workmanship.

Free Quote: See How Much You Can Save on Solar Panels in California

Fill out this 30-second form to get a quote from one of the best solar energy companies in California. You could save up to $2,500 each year on your electric bills and receive both federal and local tax incentives and rebates.

How We Determine Our Rankings

There are a number of factors to consider as you search for the best solar installers in California.

Some of the specific factors we used for our rankings include:

Services Offered

For one, it's important to note that different solar companies may offer slightly different services. Most CA homeowners will want a company that provides a wide-range of services, assisting with everything from an initial consultation on their solar system to panel installation.

Installation Process

Also consider the specific steps in the panel installation process. How long will it take to have your solar panels placed? Is the solar provider insured? Will the panels be installed by a trained member of the company, or will it be a third-party contractor?

Coverage Areas

Some renewable energy companies in California have a wider field of service than others. It doesn't do you much good to hire a solar company that's only active in Sacramento if you live closer to Los Angeles in southern California.

Pricing and Financing

You'll want to consider your budget, which can be a determinative factor. Keep in mind that most solar companies are going to have fairly steep upfront costs, but you'll ultimately save a lot of money in the long run, thanks to the reduced electric bills. In addition, California offers state tax credits and incentives that can help you reduce these upfront costs. In our rankings, we have tried to celebrate companies that offer flexible financing options.

Professional Memberships

We generally recommend working with a company that maintains membership in the Solar Energy Industries Association (SEIA) or other professional association. Membership in these groups is a great indicator of the company's professionalism, workmanship, reputation, and reliability.

Types of Panels

Pay attention to the specific type of solar technology that is offered. Is the company certified to install leading brands like Tesla Powerwall, Panasonic, and LG? It never hurts to take a closer look into the company's tech portfolio.


You can likely find solar rebates or federal tax credits by making the switch to solar energy. Will your solar energy provider help you make the necessary arrangements? It is often wise to inquire about these incentives on the front-end.


Finally, we would recommend seeking an installer that can offer a good warranty. Panels can last 25+ years, and you will want to ensure your investment is protected for as long as possible.

How Does Solar Panel Installation Work?

As you compare solar companies, you may have some questions about the installation process. What exactly is involved in having your home enhanced with solar paneling?

The process should always begin with a consultation. A solar expert will evaluate how much energy you need, based on factors such as your home's square footage, appliances, and the number of people in your home. Additionally, the consultant will help you determine the best places on your roof to place solar panels so that they maximize solar energy absorption.

The company will then install the panels onto your roof and make sure that they are connected to your home and operating properly. Once installed, these panels will capture the sun's energy and store it in a battery. A component known as an inverter will then take this energy and turn it into an AC electrical current, which is the kind of energy you'll need to power your appliances and home electronics.

The goal is that the renewable energy you get from the sun will be sufficient for you to stop using electrical power from a utility company. What's more, making the jump to solar can help you reduce your environmental footprint. For those seeking clean and (in the long run) cost-effective home energy, investing in solar can be tremendously advantageous.

Is Solar Worth it?

Are you a good candidate for switching to solar? First and foremost, you'll need to take a look at your utility bill. Cost is one of the most important factors when considering if going solar is right for you.

One important note is that in CA, depending on the city where you live, you may actually work with the local utility company, like PG&E, for a power purchase agreement (PPA) or net metering service. The utility will still be connected to your home, but you will receive credits on your bill for the extra energy generated by your home's solar system.

This can be a little bit cumbersome, and you'll probably want to work with a solar provider that can help you coordinate with your local utility provider as well as help you get the permits and approvals you need. For CA residents, this is important to ask about as you seek out an installer.


If you're interested in going solar in California, the first thing you'll want to do is research different companies so that you can find the one that best fits your budget and your needs.

Solar energy can make a world of difference for you and your family. We hope this guide will be useful to you in evaluating some of California's top solar providers.

Josh Hurst is a journalist, critic, and essayist. He lives in Knoxville, TN, with his wife and three sons. He covers natural health, nutrition, supplements, and clean energy. His writing has appeared in Health, Shape, and Remedy Review.

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