Energy use increased in the United States in 2013 as a fourth consecutive year of economic growth exerted its influence, but the longer-term trend shows the country operating with greater efficiency while also revealing the small but growing role of renewable sources like solar and wind.

The font for these insights is the Lawrence Livermore National Laboratory and its “energy flow chart,” an annual tally of U.S. energy consumption that colorfully connects energy sources with their end uses in the residential, commercial, industrial, and transportation sectors. There’s a hefty “rejected energy” component, as well, for energy that is consumed but not put to use, like waste heat. The recently released 2013 chart showed energy use at 97.4 quadrillion British