A power grid is a network that delivers electricity from producers to consumers. It consists of power plants, transmission lines, and substations that work together to ensure that homes, businesses, and schools have the energy they need. When you flip a switch to turn on a light, the electricity travels through this grid to reach you. The grid is essential for managing electricity demand and supply. It helps balance the energy produced by sources like solar panels and wind turbines with what people use. By connecting different regions, the power grid can also provide backup during outages, ensuring a reliable energy supply for everyone.