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A detailed, illustrated diagram of electrical power sources, transmission lines, and customers includes a combined-cycle power plant, a hydroelectric dam and generator, wind turbines and a solar panel array. These power plants are connected to a transformer with solid lines of varying thickness (representing the amount of electricity generated, making it a Sankey diagram). Transmission is then seen traveling along high-voltage pylons, to another transformer, which distributes different amounts of voltage to industrial, commercial and residential customers. Some customers have solar panels on their rooftops, requiring less electricity from the grid.