security and greenhouse gas reductions, plugin hybrids a more sensible
pathway than coal-to-liquids gasoline"
Paulina Jaramillo and Constantine Samaras
The House Committee on Energy and Commerce (2007) is considering
enacting policies to subsidize the production of transportation fuel from
coal-to-liquid projects (CTL). This policy would enhance national security
by lowering oil imports, but encouraging plug-in hybrids is a less costly
policy that also reduce oil imports and does more to lower greenhouse gas
(GHG) emissions. This paper compares GHG emissions of CTL gasoline to the
emissions of plug-in hybrid vehicles powered with electricity generated
with coal. A life cycle approach is used so that all stages of the life
cycle of each fuel, from production to use, are included. This analysis
allows us to better identify benefits, or disadvantages, of an energy
future that includes coal as a transportation fuel.
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