Biofuel plants have been put on hold faster than your phone company’s tech support line. With corn and soy prices hitting record high prices and an ethanol glut flooding the market, ethanol’s profit margin per gallon has dropped to a meager 25 cents from $2. That’s causing numerous ethanol and biodiesel plants to get put on hold or downright canceled. Hundreds of millions of gallons of production capacity and hundreds of millions of dollars in biofuel investments are now hanging in limbo, as investors hope prices will level out.

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A rush to cash in on ethanol has slowed as soaring corn prices squeeze profit margins for producers of the alternative fuel. At a recent high of $7 per bushel, the corn used to make ethanol has tripled in price since many plants were built two years ago, and some facilities have been shut down or put on hold.

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