How many solar panels do I need for home energy use depends on more than the size of your roof. Your annual electricity consumption, local sunlight, panel wattage, roof orientation, shading, system losses, and future energy needs all affect the required solar system size. A proper solar panel sizing assessment starts with your electricity bills. Homes with EV charging, electric heat... https://solarsme.com/how-many-solar-panels-do-i-need/