do you understand the difference between
‘energy’ and ‘liquid energy’ ?
(apparently not, so here it is.)
liquid energy —> petroleum
‘energy’ your use —> coal, natural gas, petroleum
most of the energy comes from the US,
only one tenth comes from petroleum
this is from Argonne national lab, I
direct your attention to the right part of the
top graph on page two
http://www.ncga.com/public_policy/PDF/03_28_05ArgonneNatlLabEthanolStudy.pdf
Since I stated "It takes a lot more than petroleum to produce ethanol." I don't understand why you wrote that.
this is from Argonne national lab
If you will read the link I posted above, it is also from material of the Argonne Lab. They show a positive balance only when considering fossil fuel and not total fuel. I am not sure where the Department of Energy is pulling the data for their column of current corn ethanol production. But the source of the rest of it looks to be from this presentation Michael Wang made at Ethanol Energy Open Forum, sponsored by the National Corn Growers Association at the National Press Club, Washington, D.C. in 2005.
Argonne expert addresses energy, environmental impacts of fuel ethanol
http://www.anl.gov/Media_Center/News/2005/news050823.html