According to EIA, the renewable share of energy consumption in 2015 was its largest since the 1930s. Meanwhile, the most significant decline of U.S. fossil fuel use in recent years has been in coal, which saw its consumption fall 13 percent last year.Over the past 35 years, annual ethanol use has risen from 83 million gallons to 13.94 billion gallons, which is an overall annualized growth rate of more than 490 percent. Most of the increase has of course occurred since the Renewable Fuel Standard (RFS) was enacted in 2005.Biofuels, however, have not been the fastest-growing renewable energy source in the past decade. According to recently released U.S. Energy Information Administration (EIA) data, solar and wind for electricity generation ha...