In California, Installers are necessary to have possibly a standard contractors license or possibly a C-46 Solar Contractors License. This license covers installations for photovoltaic systems, solar h2o and Room heating, and solar pool heating. Other certifications you'll want to watch out for, none of which can be legally needed https://solarcompanieslivermore.wordpress.com/2025/10/23/why-california-solar-panels-are-powering-a-sustainable-future/
California solar services Fundamentals Explained
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