<World Energy and Population: Trends to 2100 The Oil Drum DrumBeat: October 18, 2007>

37 comments on Biofuel progress, a report from Dubuque

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Heading Out on October 17, 2007 - 10:07pm Permalink | Subthread | Parent | Comments top

The $61 figure covered harvesting (with special equipment to prepare the bales, and load the trucks) and storage - the issue of moisture content is critical, and thus they had to be in barns with at least a gravel floor, and good water protection in the walls and roof. I don't know how they amortized off these costs, nor how they were derived. The numbers came in response to a question at the end of the paper and so was not very detailed, and was, I recall, because the presenter had said that the power company liked the idea but would not displace $20 coal with $120 switchgrass, and the question related to where the $120 figure came from. The plant is up around the Iowa:Missouri border. (And I am not sure if it covered the cost of herbicide and a small amount of fertilizer for the switchgrass - sorry).

The use of biodigesters for gas generation was one of the topics mentioned by the first speaker, but apart from making pellets from animal waste at a Missouri college, and the possible cellulosic source, I can't remember animal waste being mentioned much.

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thomas deplume on October 17, 2007 - 10:52pm Permalink | Subthread | Parent | Comments top

The powerplant for the grass experiments is in Ottumwa, IA. At least some of the grass was from the Corydon, IA area roughly 75 miles away.

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practical on October 18, 2007 - 5:08am Permalink | Subthread | Parent | Comments top

This is where alternative feed stocks to corn break down. Harvesting costs, as pointed out, are significant. There is no high tech-high volume infrastructure in place as there is with corn. Those who favor such as switch grass are unfamiliar with the efficiency of the corn harvest and what would be involved to obtain such efficiency with alternatives to corn. Corn has definitive quality characteristics that must be met at sale. What will be the definitive quality characteristics of switch grass and such? No one knows and no one can say. Storage is a big issue even for corn. Transporting bulking low density materials is difficult and time consuming. Also completely lacking is a discussion of on whose land the alternative feed stocks will be produced. Poor land is owned by poor owners mostly with little capital for investment. The better land is owned by the more wealthy who are not going to forgo growing a well established crop such as corn with a firm market price for a pie in the sky scheme.

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37 comments on Biofuel progress, a report from Dubuque

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