Power networks are a fundamental facet of modern society, providing essential connections for energy to reach homes and businesses. There are a variety of terms used interchangeably in place of power network, including power grid, electric grid, energy network, and electrical network. Power grid specifically refers to the interconnected power sources and substations that make up the network, while electric grid is a term more often used in the United States to describe the same system. The terms energy network and electrical network broaden the focus to include the mechanism by which energy is transmitted and distributed. Ultimately, these different terms all describe the essential infrastructure that powers modern life, providing electricity to everything from homes to hospitals to factories.