A carport is a structure that protects your car from the sun, rain, hail, etc. It is an open-air shelter with no walls overhead. A carport is built with lightweight materials like aluminium or steel and many are portable so you can take them with you when you move. Sometimes a carport is built to resemble a garage with walls and a roof overhead. These types have way better insulation but still require electricity for lighting, ventilation, etc.