8 Best Solar Companies in California: 2022 Rankings & Reviews

California has long been on the leading edge of clean energy, both in volume and in policy. So, as you begin your search for the best solar companies in California, you’ll find that there are a lot of providers to choose from.

The good news is that a number of the nation’s top solar companies got their start in the Golden State, so its residents have access to some of the best solar panels and services in the nation.

To help you in your search through the wide variety of California solar installers, we’ve narrowed in on a list of the top eight.

We understand that for most homeowners, the decision to invest in solar comes down to installation costs. To help you understand if solar panels are worth it for your home, you can get a free, no-obligation quote from one of the best solar companies in California by using this tool or filling out the form below.

Our Picks for Top California Solar Installers

NRG Clean PowerSunrunSunPowerStellar SolarTeslaSunlux Solar OptimumBaker Electric Home Energy

Comparing the 8 Best Solar Companies in California

NRG Clean Power

Service Area: State of California; based in Los Angeles

What We Like: NRG Clean Power is a total home performance company, offering a fully comprehensive approach to designing the perfect clean energy system for your home. With accessible prices, flexible solar financing options, lifetime warranties and a great reputation to boot, NRG Clean Power tops our list of the best solar companies in California.

What We Don’t Like: NRG Clean Power doesn’t offer solar leases, which can exclude homeowners who value helping the environment more than saving money by purchasing a system of their own.

What Customers Are Saying: “I highly recommend this solar company. They have the process mastered. I was well-informed of the whole process, especially on the aspect of the expenses. All questions were answered promptly — just a great team!” — Chai via Better Business Bureau

NRG Clean Power at a Glance:

Year Founded: 1992Services Provided: Solar panels, backup batteries, electric vehicle chargers, roofing and energy efficiency upgradesWarranty: Lifetime labor warranty, product-specific warranties for photovoltaic panels and invertersFinancing Options: Cash purchase, solar loan


Service Area: State of California

What We Like: When it comes to flexible, affordable home solar backed by a rock-solid warranty, Sunrun is a tough option to beat. Sunrun offers excellent solar lease options and solar financing with zero money down, customizing its services around your needs.

What We Don’t Like: The size of Sunrun can make it vulnerable to issues with communication after a sale. Some customers report having a hard time connecting with customer service.

What Customers Are Saying: “Sunrun walked me through the pros and cons of purchase versus leasing. Also battery versus no battery. Decided to purchase panels and install. Three months later, everything is working great. Should easily be able to break even in about eight years. Thanks for great service!” — Bruce via BBB

Sunrun at a Glance:

Year Founded: 2007Services Provided: Solar panels, backup batteries, EV chargersWarranty: 10-year all-inclusive warranty and product-specific warranties Financing Options: Cash purchase, solar loan, solar lease/power purchase agreement (PPA)Learn More: Sunrun Review


Service Area: State of California; based in San Jose

What We Like: SunPower has long been one of the top national solar companies — both in the quality of its products and its installations. Manufacturing its own industry-leading solar panels, SunPower delivers efficient, all-in-one solar systems with the best warranty in the business to customers throughout California and the entire U.S.

What We Don’t Like: SunPower outsources its work to certified dealers throughout the country. Though the company still maintains stellar reviews, your experience can be dependent on which dealer you live nearest.

What Customers Are Saying: “I was not the original customer. I bought the residence with SunPower’s system already installed and assumed the lease. Lease is reasonable and does not increase over time. Customer service has been excellent when contacted. Any and all issues resolved with just one call.” — Kevin via BBB

SunPower at a Glance:

Year Founded: 1985Services Provided: Solar panels, backup batteries, EV chargersWarranty: All-in-one 25-year warranty Financing Options: Cash purchase, solar loan, solar lease/PPALearn More: SunPower Review

Stellar Solar

Service Area: Southern California; based in San Diego

What We Like: Voted San Diego’s best solar company in 2021, Stellar Solar’s team of experienced solar energy consultants uses a consultative, educational, no-pressure approach to both residential and commercial solar projects. This approach pays dividends for Stellar Solar, as the company boasts exceptional customer reviews and builds its business on a booming referral network. Stellar Solar offers some of the best solar products from SunPower, Enphase, Panasonic, LG and more.

What We Don’t Like: We’d like to see Stellar Solar offer electrical services and energy efficiency packages along with its solar, battery and EV chargers.

What Customers Are Saying: “Wonderful experience with Stellar Solar… The reps from Stellar are highly professional, timely and courteous. They took the time to clearly explain the process from start to finish. The installation process was straightforward. The crew was very considerate and they left the project site clean and neat.” — Madeline via Google Reviews

Stellar Solar at a Glance:

Year Founded: 1998Services Provided: Solar panels, backup batteries, EV chargersWarranty: 25-year workmanship warranty, 10-year roof warranty, product-specific warrantiesFinancing Options: Cash purchase, solar loan, solar lease/PPA


Service Area: State of California; currently based in Palo Alto (CEO Elon Musk has announced the company will be relocating its headquarters to Austin, Texas)

What We Like: A household name in electric vehicles and solar energy, Tesla offers some of the most advanced and aesthetically pleasing solar technology on the market. Though not a solar installer like the other names on this list, Tesla will match you with a solar technician near you that is certified to install its products. Tesla also guarantees to price-match any solar system in order to offer the most affordable solar panels in the country.

What We Don’t Like: Installing your solar system through Tesla does come with a few downsides. The work is outsourced, and customers have experienced long wait times when reaching out with service and warranty questions. The popularity of Tesla can also lead to long wait times for products like the Powerwall 2.

What Customers Are Saying: “Tesla Energy partnered with Sunworks to install my solar panels, and I was super impressed with them. They provided better financing than any other companies, and they were so quick to get everything up and running. It’s only been a year, and I’ve already saved tons of money on my electric bill. Well worth it.” — Benjamin via Yelp

Tesla at a Glance:

Year Founded: 2003Services Provided: Solar panels, backup batteries, EV chargers, solar roofsWarranty: 25-year panel performance warranty, 10-year comprehensive warranty Financing Options: Cash purchase, solar loanLearn More: Tesla Solar Review


Service Area: Southern California; based in Placentia

What We Like: Sunlux delivers solar solutions in California as well as Texas, offering solar, storage, smart home and EV solutions. Sunlux’s team of experts is well acquainted with California’s solar incentives and rebates and can walk you through financing options to make sure you get the most value out of your investment.

What We Don’t Like: Sunlux has only been in business since 2015, which makes it the youngest company on our list. This isn’t to say that it won’t provide as good or better service than solar industry veterans, but it’s something to note nonetheless.

What Customers Are Saying: “I got my solar installed last July by Sunlux. I [did] tons of research before I went with them. I am so happy I did. Everyone in their team has a customer-first mentality. I can’t stress how professional [it was] every step of the way. Even after the system is installed, they still treat you like a VIP.” — Johnny via Google Reviews

Sunlux at a Glance:

Year Founded: 2015Services Provided: Solar panels, backup batteries, EV chargers, roofingWarranty: 25-year equipment warranty, 25-year labor warranty, 25-year production guaranteeFinancing Options: Cash purchase, solar loan, solar lease/PPA

Solar Optimum

Service Area: State of California; based in Glendale

What We Like: Looking for a solar company built on real relationships and honest advice? Check out Solar Optimum. Providing residential and commercial services, Solar Optimum is certified by leading brands and has a proven track record of success in California. With a stellar industry reputation, helpful solar educational tools and an impressive warranty, Solar Optimum really goes above and beyond for its customers.

What We Don’t Like: Solar Optimum’s marketing can be a little loud at first, but the company clearly has the service to back it.

What Customers Are Saying: “I originally signed with another company to install a solar system but things didn’t work out with them… I did more research and came across Solar Optimum thanks to a coworker’s recommendation. Glad I did… Compared to the solar company I worked with originally, Solar Optimum deserves 10 stars, not just 5.” — Jake J. via BBB

Solar Optimum at a Glance:

Year Founded: 2008Services Provided: Solar panels, backup batteries, EV chargers, roofingWarranty: 25-year equipment warranty, 25-year labor warranty, 25-year performance guaranteeFinancing Options: Cash purchase, solar loans

​Baker Electric Home Energy

Service Area: Southern California; based in Escondido

What We Like: With more than 80 years of experience, 16,500 installations and over $572 million in customer energy savings, the experience of Baker Electric Home Energy is unmatched in California. Its highly trained team of electricians offers more than just solar, with services including HVAC, electrical upgrades, smart home installations and service plans to keep your home powered as renewably and efficiently as possible.

What We Don’t Like: For the size and history of this company, its service area is a little restricting. This is only good news for those who live within it, however, as the company prides itself on staying local and delivering complete satisfaction.

What Customers Are Saying: “I could not be more impressed with how Baker Solar performed from my initial sales meeting all the way through service completion. This company is the gold standard. Thoroughly professional from start to finish.” — Chris via Google Reviews

Baker Electric Home Energy at a Glance:

Year Founded: 1938Services Provided: Solar panels, backup batteries, EV chargers, HVAC, efficiency upgradesWarranty: 25-year equipment warranty, 10-year roof warrantyFinancing Options: Cash purchase, solar loan, solar lease/PPA

How We Chose the Best Solar Companies in California

We researched the product ranges, services, financing options, customer feedback and industry reputations of every major California solar installer. Using this methodology, we rated and ranked each company to narrow down our picks for the best solar companies in California.

Choosing the Best Solar Installer for Your Home

Keep in mind that everyone’s needs are different when it comes to solar, so what may be the best solar company for your neighbor might not be right for you. Consider the following factors and place more weight on what’s important to you when choosing the best company for your installation:

Services Offered

For one, it’s important to note that different solar companies may offer slightly different services. Most California homeowners will want a company that provides a wide range of services, assisting with everything from an initial consultation to panel installation to applying for financial incentives. But you may also want specialized services such as other home energy efficiency upgrades or an EV charger installation.

Installation Process

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 who does the work?

Solar Pricing and Financing

Sticker shock is common with solar systems, but keep in mind that you’ll ultimately save money in the long run thanks to the reduced energy costs. In addition, California offers statewide solar incentives that can help you reduce these upfront costs. Budget can be paramount for homeowners considering solar, and some companies are more flexible than others.

Industry Affiliations

We generally recommend working with a company that maintains membership in the Solar Energy Industries Association (SEIA) or other professional associations. 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, Panasonic and LG? It never hurts to take a closer look into the company’s tech portfolio. If you have a specific brand of solar panel or battery in mind, check that the company you’re speaking with is certified to sell and install those products.

Incentives, Rebates and Tax Credits

In California, it’s likely you’ll be eligible for solar rebates and federal tax credits after making the switch to solar energy. Will your solar installation company help you make the necessary arrangements? Be sure to ask your provider about what’s available in your area. Even better, ask if the company has experience applying to these incentives.


Finally, we recommend seeking an installer that can offer a good warranty. Panels can last 25 to 30 years, and you will want to ensure your investment is protected for as long as possible. The best solar companies will offer 25-year warranties for roofing, performance and workmanship.

Cost of Solar in California

As of 2022, our market research and data from top brands show the average cost of solar panels in California is around $2.73 per watt. This means a 5-kW system would cost around $10,101 after the federal solar tax credit is applied. Keep in mind that a 5-kW system is about the minimum size you’ll need for your home.

The state of California also offers a variety of solar incentives to help offset the cost of your system.

California Solar Incentive

Incentive Overview

Self-Generation Incentive Program (SGIP)

The SGIP offers rebates for storing solar energy at both residential and non-residential facilities.

Active Solar Energy System Property Tax Exclusion

This property tax exclusion ensures the addition of your solar equipment doesn’t raise homeowners’ property taxes. (Solar will still increase your property value, however.)

Single-Family Affordable Solar Homes (SASH) Program

Deployed by the California Solar Initiative (CSI), SASH provides fixed, up-front incentives on qualifying affordable single-family housing.

How to Find the Best Solar Installer in California

California is a big place, and as the leading state in solar energy, has a lot of reputable solar companies operating within it. When evaluating the best solar installer for you, we recommend placing more emphasis on local companies that may have even more experience than some of the national leaders. Familiarity with local energy rates, utilities, incentives and weather is often an underrated factor when it comes to finding the right solar provider.

Again, we understand that the significant cost of solar can deter some readers from making the switch. Solar is a significant investment, after all. This is why we recommend taking the simple, no-pressure first step of getting a few quotes from the best California solar installers and hearing what they have to say about your home’s qualifications.

Comparing quotes from multiple companies can help you gauge whether a solar system is within your budget and can save you thousands of dollars on your installation. You can use this tool or fill out the form below to get started right away.

FAQ: Best Solar Companies in California

What is the most reputable solar company in California?

Luckily for California residents, there are a number of trustworthy solar companies in the state. We recommend NRG Clean Power and Sunrun as two of the best, but any of the solar companies listed in this article will offer you reliable service at a reasonable price.

Who is the biggest solar company in California?

Sunrun claims to be the No. 1 national installer of residential solar that offers services in California, but SunPower likely rivals its market share in the state.

Is it worth going solar in California?

With ample sunshine, a number of solar companies and generous solar incentives, California is an ideal place to go solar. Of course, whether or not it’s worth it for you will depend on your home, budget, utility and energy needs.

Karsten Neumeister is a writer and renewable energy specialist with a background in writing and the humanities. Before joining EcoWatch, Karsten worked in the energy sector of New Orleans, focusing on renewable energy policy and technology. A lover of music and the outdoors, Karsten might be found rock climbing, canoeing or writing songs when away from the workplace.

Read More at EcoWatch

Leave a Comment