First, all solar installers ought to maintain a sound and active license within the Contractors Point out License Board (CSLB). They could hold any of the subsequent being Qualified for solar installations in California: a solar contractor license, an electrical contractor license or simply a normal building contractor license. NRG https://www.americanarraysolar.com/how-to-start-solar-energy-system-installation-with-a-california-solar-company/