More so than ever before, the United States is powered by a diverse mix of energy sources. The interactive diagrams that follow explore the past, present and future of this complex system.

Every year, LLNL produces a new energy flow chart showing the sources of US energy, what it’s used for, and how much of it is wasted. If you’ve never seen it before, it’s a bit of a mind-blower.

Sankey Diagrams, like those below, are a type of flow diagram that provide a single-page reference about a resource and byproduct flow. ... To develop the Installation Energy Sankey diagram ...

Each year, the Department of Energy’s LLNL releases a Sankey diagram that tracks the nation’s consumption of energy resources. The 2012 Energy Flow Chart estimates, based on data from the ...

Each food chain is a descriptive diagram including a series of arrows, each pointing from one species to another, representing the flow of food energy from one feeding group of organisms to another.

When it comes to electrical circuits, there’s a lot to remember and understand. We've got you covered with this Intro to Circuits BBC Bitesize guide.