In short: A plug-in solar panel turns sunlight into ordinary household electricity and sends it into your home through a standard outlet. While the sun is up, your appliances draw from the panel first and from the grid second, so you buy less power and your bill drops. There is no roof work and no rewiring. It is closer to plugging in an appliance than to installing solar. It sounds almost too simple, so people understandably want to know what is actually happening behind tha