How to find a licensed solar installer in California

What “licensed” means for a solar installer

In California the word has a specific meaning: a current license issued by the Contractors State License Board (CSLB) in a classification that covers the work. This site’s statewide guide to choosing a solar company covers the rest of the decision; this page is about the license itself.

Two classifications name solar work directly. The CSLB defines a C-46 Solar contractor as one who “installs, modifies, maintains, and repairs thermal and photovoltaic solar energy systems.” The C-10 Electrical classification covers anyone who installs or connects electrical equipment, and its scope lists “solar photovoltaic cells” by name (CSLB, checked September 23, 2026). A C-46 company that only does solar and an electrical contractor who also installs panels can both be properly licensed for a rooftop system. The license is the only installer credential California law requires; for how it compares with voluntary ones such as NABCEP certification, see what licensed, NABCEP-certified and accredited mean.

A general building contractor is different. The CSLB describes general contractors as usually overseeing a project and coordinating licensed specialty subcontractors for each trade. If one quotes your solar job, ask which specialty contractor will do the solar and electrical work, and look that license up too.

Why an unlicensed installer is not an option

The CSLB has stated the rule plainly: installing a solar energy product is a “home improvement,” which can only be done by a licensed contractor (CSLB industry bulletin, checked September 23, 2026). The state’s small-job exemption does not open a gap. Since January 1, 2025, an unlicensed handyperson may take jobs up to $1,000 in labor and materials, but only when no building permit is needed and no workers are hired, and their advertising must say they are not licensed (CSLB, checked September 23, 2026). That exemption does not reach solar: the CSLB’s own solar guidance places the installation with licensed contractors.

A license also carries money and insurance behind it. Before the CSLB issues one, the contractor files a $25,000 bond and shows workers’ compensation coverage or a valid exemption (CSLB, checked September 23, 2026). The bond is not a guarantee that you will be repaid for a bad job, but an installer without one has none of it.

How to find licensed solar contractors near you

Most people start with a map search or a neighbor’s recommendation. That works, as long as every name goes through the license check before a sales visit. If you want the full list for your area instead, the CSLB publishes it.

1. Open the CSLB Public Data Portal’s list by classification and county.
2. Choose C-46 and C-10 as the classifications and your county. You can select up to 10 classifications and up to 10 counties in one request.
3. Download the spreadsheet. It lists currently renewed licenses with the license number, business name, address, phone number, license status, classifications, bond and workers’ compensation details. Email addresses are left out under state law, and the service is free (CSLB, checked September 23, 2026).
4. Shortlist three companies and ask each for a written bid. The CPUC’s consumer guide recommends bids from at least three qualified solar providers.
5. Re-check each license on the day you sign. The CSLB warns that the downloaded list is current only when it is downloaded and that a license’s status can change at any time.

The C-10 list will be long, because it includes electricians who never touch solar. Filter it by asking each company for photos or addresses of recent solar jobs and for the permit numbers the city issued for them.

Prefer to start local? The directory of city solar guides covers the utility and permit details for 66 California cities. In Santa Barbara, for instance, the Santa Barbara installer and permit guide covers the utility and permit questions there.

Confirming a license you have been given

When a company hands you a license number, run it through the CSLB’s Check a License tool. It searches by license number, business name, a person’s name on the license, a Home Improvement Salesperson registration number or a salesperson’s name. Three things should line up: the status is active, a solar-capable classification appears, and the business name matches the one on your contract exactly. Our step-by-step contractor check explains what the rest of the record tells you, including the bond and complaint history.

The salesperson is licensed separately

The person at your door or on the phone is often not the installer. The CSLB requires anyone who solicits, sells, negotiates or executes home improvement contracts for a licensed contractor to register as a Home Improvement Salesperson (HIS). Registration numbers end in “SP,” and they appear in the same license check (CSLB, checked September 23, 2026). Lead generators and solar brokers may refer you and set appointments without registering, but they may not quote a price or negotiate the contract. The difference is explained in what a solar broker can and cannot do.

Signs the licensed company is not the one you are dealing with

• The contract names a company different from the one that pitched you, or shows no license number.
• The license record lists a different business name, or no solar-capable classification.
• The down payment asked for is more than $1,000 or 10% of the contract price, whichever is less; the CSLB says a contractor cannot ask for more (CSLB bulletin #20-22).
• There is no solar energy system disclosure document on the front page of the contract, which California requires for residential solar sales.
• The salesperson will not give a registration number you can look up.

If you have already signed with an unlicensed company or one that took a deposit and stopped responding, see what to do when a solar company takes your money. Before signing anything, run through the contract red flags and compare cash, loan, lease and PPA terms.

If you want to become the licensed installer

The CSLB exam requires at least four years of journey-level experience in the classification, with up to three years creditable from training or education. The fees, bond and salesperson rules are in our guide to getting a California solar contractor license.