Your unique timeline will rely upon your process's size, the complexity of the roof, and if you need to include an influence meter for net metering. In off-grid and hybrid solar methods, the DC electrical power from PV modules is transmitted into the demand controller initial — not the inverter. https://www.americanarraysolar.com/4-things-to-see-when-hiring-solar-installers-in-california-in-a-budget/