U.S. Energy History Visualization Project
From the source: "The U.S. Energy History Visualization project is motivated by proposals to transform the world’s energy and our belief that history matters: past U.S. energy transitions can help us understand our potential future path. The interactive visualization shows 200 years of evolving energy use in America as an animated Sankey diagram. "
View @ us-sankey.rcc.uchicago.edu
Or scroll down for additional info