The SJ-R has several articles on ethanol yesterday and today. It reminded me of the renewable energy forum at UIS on April 19 that I never got around to writing about so I'll take this as an opportunity.
The forum featured three speakers, the first of which was Rebecca Stanfield, the state Director of Environment Illinois. She spoke about the major sources of pollutants that cause global warming, the top two being coal power plants and automobile emissions, and proposed legislation to reduce those emissions in Illinois.
The other two panelists focused their attention on ethanol. David Pimentel, Professor of Ecology and Agricultural Sciences at Cornell University, is a leading critic of ethanol. His central argument is that the energy required to create ethanol, when you account for everything from growing the crops to the refining process, is greater than the amount of energy derived from burning the fuel.
I've heard this argument before but I still felt that ethanol is beneficial for reducing our dependence on foreign oil. So I was particularly struck by Pimentel's claim that we import 1 1/2 gallons of oil from the middle east to produce 1 gallon of ethanol. Overall, I thought his presentation was pretty devastating toward the claim that current methods of producing corn-based ethanol provide any benefits for the environment.
Unfortunately, one of the scheduled panelists, John Caupert of the Corn-to-Ethanol Research Center at SIUE, couldn't attend, so I can only guess what defense he would have made for corn-based ethanol.
The third panelist in attendance was Stephen Long, professor of Plant Biology and Crop Sciences at UIUC, who is part of an ethanol research project that received a large grant from BP. I eagerly awaited a fist fight between Pimentel and Long, but was disappointed with nothing but the kind of polite, passive-aggressive disagreement that's typical for academics.
Long made an interesting analogy for his argument by showing pictures of a Wright Brothers plane and a modern jet. He showed a chart of various studies on the efficiency of ethanol production, which suggested not all research is as bleak as Pimentel's findings, but he didn't make much of a defense of current methods of producing corn-based ethanol. Instead, he argued that we shouldn't discount the future potential of ethanol based on an analysis of today's technology.
However, Long's vision of the future of ethanol was not focused on corn, but rather other crops such as switchgrass and miscanthus in particular. I had never heard of miscanthus, but apparently it grows well in Illinois and Long believes it can be used to produce ethanol much more efficiently than corn.
If he's correct, that brings up a number of issues for policy makers. What structural changes would need to be made to the agricultural market in Illinois down the road if farmers switch some of their corn production to miscanthus or switchgrass and are their ways to minimize the financial risk involved? Will ADM, one of the strongest supports of corn ethanol, be a barrier to that change or can they be brought on board?
More locally, if corn based ethanol turns out to be a passing fad, can ethanol plants being built, such as the one in Waverly, be cheaply converted to other forms of ethanol production, or will we be left with an abandoned eyesore in 10 or 15 years? That was one of the many questions I didn't hear asked, at least publicly, by the county board when they rushed through approval of the Waverly plant. Hopefully the SJ-R articles will spur a more critical discussion since the county board tends to avoid public controversy.
Regardless of the future of ethanol, its clear that the most effective thing we can do immediately to reduce emissions is to improve fuel efficiency and require stricter pollution control equipment on new cars. You would think that improving mileage would be the easiest and most politically popular action since it also lowers the amount of money people spend on gas, but once again, the oil and auto industries are blocking action. I'll write more about that on another day.