The Scale of Alternative Liquids

Biofuels: the Biggest Supply Response to the 2000s Oil Shock

Real annual average oil price according to BP (top graph), and estimates of volumetric production/capacity for various oil alternatives (bottom).  1975-2008/9.  Note that these are total volumetric estimates: about half of tar sands production is sold as bitumen, not synfuel, and the energy density of the biofuel stream is only about 70% or so of that of crude oil.