Conversion Costs and Coefficients

The conversion costs and technical coefficients used in the model can be found in the document entitled, Economic Implications to the Agricultural Sector of Increasing the Production of Biomass Feedstocks to Meet Bio-power, Bio-fuels, and Bio-product Demands (De La Torre Ugarte et. al., 2006). A few technical improvements are assumed for the extension through 2030. Conversion coefficients of cellulose to ethanol were increased linearly for stover, straw and dedicated energy crops from 2015 to 2030 to final coefficients of 87.9, 83.2 and 90.2 gals per ton respectively. The conversion of corn grain to ethanol is assumed to increase from 2.7 gals per bushel in 2014 to 3.0 gals per bushel in 2019, and thereafter remain steady. Biodiesel is also assumed to increase from 1.4 gals per bushel in 2014 to 1.5 gals per bushel in 2019 and thereafter remain steady. Wood residue is also added as a feedstock for conversion to ethanol. Wood residue technical coefficients were derived by adjusting dedicated energy crops coefficients by the difference in BTU content. The ratio of dedicated energy crops to wood BTU content is assumed at 1.0625.

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