In California, installers are necessary to have both a typical contractors license or perhaps a C-46 Solar Contractors License. This license covers installations for photovoltaic systems, solar water and space heating, and solar pool heating. Sunrun is one of the biggest solar corporations in the U.S., serving above one million https://solarpanelyardmount.blogspot.com/2025/09/californias-premier-solar-power-company.html