The Golden State has installed the most solar and energy storage of any state in the United States, according to the Solar Energy Industries Association. California has long been a solar leader because of the many economic and environmental benefits it provides, including billions in local investment.
With the state’s commitment to sustainability, infrastructure modernization, and community development, the demand for skilled solar contractors is higher than ever. To work as a solar contractor in the Golden State, you must be licensed by the Contractors State License Board (CSLB). We go over the steps required to obtain your license, including experience, testing, and bond and insurance requirements.
Did You Know?
California leads the nation in solar energy capacity, with over 55,000 MW installed—powering 16 million homes
California Solar Contractor License Requirements
Contractors performing solar photovoltaic (PV) installations in California often hold a C-46 Solar Contractor License issued by the California Contractors State License Board (CSLB). A contractor's license is generally required for projects valued at $1,000 or more in combined labor and materials. The C-46 classification authorizes contractors to install, modify, maintain, repair, or service solar energy systems used to generate electricity or heat water in residential and commercial applications.
Other license classifications that may perform solar-related work include:
- C-10 Electrical Contractor: Commonly used for solar photovoltaic installations. C-10 contractors may perform electrical work associated with solar systems, including wiring, interconnection, and integration with a building's electrical system.
- B General Building Contractor: May contract for solar installation projects when the work involves multiple building trades or is performed as part of a broader construction project. A B contractor can also subcontract the specialty work to appropriately licensed contractors.
Depending on the scope of work, additional classifications may be required for certain solar thermal (water-heating) systems involving plumbing, roofing, or HVAC components.
Eligibility Criteria for a Solar Contractor License in California
To qualify for a C-46 Solar Contractor License, applicants must:
- Be at least 18 years old
- Have a valid Social Security Number (SSN) or Individual Taxpayer Identification Number (ITIN)
- Demonstrate at least four years of journey-level, foreman-level, supervising, or contractor-level experience within the past 10 years in solar installation or a closely related trade
- Provide certification of work experience signed by a qualified individual
- Complete Live Scan fingerprinting and undergo a criminal background review
- Education and apprenticeship training may be credited toward a portion of the experience requirement.
How to Become a Solar Contractor in California
The licensing process generally involves the following steps:
- Meet the experience and eligibility requirements
- Submit a contractor license application to the CSLB
- Pass the required examination(s)
- Complete fingerprinting and background review requirements
- Obtain the required contractor license bond
- Pay licensing fees and receive your license
The Application Process for a Solar Contractor License in California
The CSLB application process typically includes:
- Completing and submitting the contractor license application with applicable fees
- Providing documentation of qualifying work experience
- Waiting for CSLB review and approval
- Scheduling required examinations, if applicable
- Completing Live Scan fingerprinting
- Submitting bond information and any remaining licensing documents
Once all requirements have been satisfied, the CSLB will issue the contractor license.
Exam Preparation and Study Resources
Most applicants must pass the following:
- California Law & Business Examination
- C-46 Solar Contractor Trade Examination (unless eligible for an examination waiver)
The C-46 trade examination focuses on solar photovoltaic and solar thermal systems, including system design, installation practices, electrical integration, safety procedures, troubleshooting, applicable codes, and project planning. The Law & Business exam covers contracts, estimating, project management, lien laws, safety regulations, and contractor business operations.
Preparation resources include:
- CSLB Examination Study Guides
- CSLB licensing information and candidate bulletins
- Contractor licensing schools and exam preparation programs
- Practice exams and online study courses
- Hands-on solar installation experience and trade review
Licensing Bonds and Insurance Requirements for Solar Contractors in California
California licensed contractors must maintain a contractor license bond. As of 2026, the CSLB requires a $25,000 contractor license bond for most active licensees. Additional bonding requirements may apply depending on business structure, disciplinary history, or use of a Responsible Managing Employee (RME).
If you have employees, you must also purchase Workers’ Compensation insurance and provide proof of coverage.
Additional coverages, such as General Liability, are not required for licensing but are strongly recommended to protect your business.
How to Obtain Necessary Bonds and Insurance
CCIS can provide you with both the necessary Surety Bond for licensing and Workers’ Compensation insurance. We can also provide you with General Liability insurance to protect against third-party lawsuits involving bodily injury and property damage.
Frequently Asked Questions About Solar Contractor Licenses in California
Q. How quickly can I secure the necessary bonds through CCIS for my solar contractor licensing?
A. Generally, CCIS can provide you with a bond the same day.
Q. What coverages does CCIS offer for solar contractors?
A. CCIS can provide you with a portfolio of standalone coverages, including General Liability, Workers’ Compensation, Excess Liability, and Contractors Tools & Equipment to protect your operation in the event of losses.
Note: This content is for informational purposes only and is not legal, licensing, or professional advice. Licensing requirements, fees, and regulations may change and vary by individual circumstances. Always verify requirements directly with the CSLB or consult a qualified professional. Consult with your legal professional concerning your compliance as to your business operations.