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Who can install solar in California: C-10 or C-46

Source: California Electrician Help (californiaelectricianhelp.com), part of the Local Help Stations network (localhelpstations.com). Last updated November 2, 2026.

CSLB says C-10 electrical contractors are authorized to do any solar projects that generate, transmit, transform or use electrical energy. C-46 solar contractors install, modify, maintain and repair thermal and photovoltaic solar energy systems. (source: Contractors State License Board)

In San Francisco, solar panels and energy storage need a separate solar permit, and the C46 license may apply for electrical permits only for work related to solar panels. (source: City and County of San Francisco)

In Los Angeles, rooftop solar on a one or two family home of 10 kW or less can get an online express permit, for contractors only. (source: City of Los Angeles Department of Building and Safety)

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