My re-rendering of a Sankey diagram representing the New York State energy system in 2017. The original is by NYSERDA here.
Hover your mouse pointer over the items in the diagram (energy sources, flows, transformations, uses, and losses) to see energy amounts in trillions of British thermal units (TBtu) – one Btu is the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. It’s striking how much energy is lost at various points: for instance, transportation has huge losses due to the inherent inefficiency of internal combustion engines. We have a solution for that.