When homeowners install a solar power system, they are able to generate their own electricity from the sun. This means that during the day, when the sun is shining, the solar panels will be generating electricity for the home. This electricity can be used to run the home’s appliances and lights, and any excess electricity can be exported back to the grid. At night, or during times when the sun is not shining, the home will draw electricity from the grid-like it normally would.