In California, installers are required to have both a general contractors license or even a C-46 Solar Contractors License. This license addresses installations for photovoltaic systems, solar h2o and Area heating, and solar pool heating. Stellar Solar’s systems include a 25-year warranty that covers products, Electrical power generation, and labor. https://bestsolarcompanyfresno.blogspot.com/2025/09/california-solar-power-solutions-for.html