Imperium Renewables, a biodiesel maker in Washington, is trying to hang on as a storage depot, its founder says. Evolution Fuels, an outfit that used to sell a biodiesel brand licensed by country singer Willie Nelson, has stopped production and said in a securities filing it may not be able to continue as a going concern. The company didn't return calls for comment.
Earlier this year, GreenHunter Energy Inc., operator of the nation's largest biodiesel refinery, stopped production and in June said it may have to sell its Houston plant, only a year after politicians presided over its opening. Dozens of other new biodiesel plants, which make a diesel substitute from vegetable oils and animal fats, have stopped operating because biodiesel production is no longer economical.
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