C-46 · Trade coverage

Solar Contractor Insurance in California

Solar installers work on roofs, on live electrical systems, and on warranties that outlast most policies. We place C-46 contractors with carriers that write rooftop solar and battery work and understand the roof leak claims that come with it.

What the C-46 license covers

The CSLB’s definition

“A solar contractor installs, modifies, maintains, and repairs thermal and photovoltaic solar energy systems. A licensee classified in this section shall not undertake or perform building or construction trades, crafts, or skills, except when required to install a thermal or photovoltaic solar energy system.”

Falls from roofs are the injury that matters most, followed by electrical shock. On the liability side, the most common solar claim is a roof leak at the mounting penetrations, often showing up years after the job. Fires from inverters or wiring, and battery storage, are the claims carriers worry about most. Some policies exclude roofing work, which a solar installer can’t avoid, so check for that before you bind.

The C-46 coverage stack

C-46 requirements

What California requires of a C-46 licensee

RequirementWhat applies to C-46 solar contractors
Contractor’s license bondA $25,000 bond is required to activate and keep the license. LLC licensees also need a $100,000 LLC employee/worker bond. How the bond works
Workers’ compensationRequired now if you have even one employee. With no employees you can file a CSLB exemption, but that option ends for every classification on January 1, 2028. Check your requirement
General liabilityRequired by the CSLB only for LLC licensees (at least $1 million). General contractors and owners require it anyway, usually with additional insured status.

Workers’ comp class codes and 2026 rates

Class codeDescriptionAdvisory rate per $100 payroll
3724Electrical machinery or auxiliary apparatus installation, service or repair, including photovoltaic systems$4.24
5190Electrical wiring within buildings, workers paid under $40.00/hr$3.73
5140Electrical wiring within buildings, workers paid $40.00/hr or more$2.11

Source: WCIRB California, approved September 1, 2026 advisory pure premium rates and classification descriptions. These are benchmark loss costs, not quotes: each carrier files its own rates, and your experience mod and credits adjust the final premium.

Under the WCIRB’s rules, installing PV panels, inverters, battery storage and the wiring that belongs to the PV system is 3724, not roofing and not electrical wiring. Building wiring that isn’t part of the PV system, such as a main panel upgrade, is 5190 or 5140. Solar thermal (hot water) systems are classified by the work involved, so we confirm that code with the carrier.

Code 3724

$4.24 per $100 of payroll for PV installation in 2026

Roof leaks

the most common solar liability claim

WC by 2028

every C-46 needs a policy, employees or not

Common questions

C-46 coverage, answered

What is the workers’ comp class code for solar installers in California?
The WCIRB classifies photovoltaic installation, including panels, inverters, battery arrays and the system’s wiring, as 3724, at $4.24 per $100 of payroll in its 2026 advisory rates. Building wiring outside the PV system is 5190 or 5140.
Does my solar contractor policy cover roof leaks?
It depends on the policy. Some general liability policies exclude roofing work or limit coverage for water damage. Since every rooftop install penetrates the roof, confirm this before you bind.
Is general liability required for a C-46 license?
Only for LLC licensees, at least $1 million. Homeowners, financing companies and general contractors will require it.
Do solar contractors need workers’ comp with no employees?
A C-46 with no employees can file the CSLB exemption until January 1, 2028, when it ends for every classification.
Related trades

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