Tag Archives: corn ethanol

Don’t Worry, Be Happy

The EPA has released its long-awaited proposed rules for the Renewable Fuel Standard, including calculations of the lifecycle greenhouse gas emissions for various biofuels. Unlike California, the EPA is proposing to “discount” the greenhouse gas emissions of both biofuels and the baseline petroleum gasoline. The discount rate that EPA uses for most of the calculations it presents is 2 percent over 100 years, although it also proposes using a 0 percent discount rate and a Read More >

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A Bad Rule Is Better Than No Rule?

California’s Air Resources Board will vote Thursday on its proposed numbers for the life cycle emissions of various fuels, included under the Low Carbon Fuel Standard. According to a Greenwire story picked up in the New York Times, advocates of the rule believe that it will stimulate investment in advanced biofuels, since according to the staff analysis those biofuels will be preferred for use in California. But start-up advanced biofuel producers are facing considerable economic Read More >

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Ethanol or Tar Sands?

Those who are pushing the inclusion of indirect land use change (ILUC) in government regulations have thus far proposed ILUC as the only indirect effect and that it only apply to biofuels. A letter from more than 100 scientists pointed out this would create unequal boundaries for transportation fuels and unfairly disadvantage biofuels. But are there indirect effects from producing gasoline? In a March 16 hearing, staff for the California Air Resources Board said they Read More >

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California Proposes Numbers for Indirect Land Use Change Emissions

California issued a staff report last week for its “Proposed Regulation to Implement the Low Carbon Fuel Standard.” As expected, the rule proposes a measure of indirect land use change emissions for select biofuels – corn and sugarcane ethanol and soy biodiesel. The report defines the assumptions behind the analysis – in a word, that use of existing crops for biofuels reduces supplies, increases prices, and thereby induces agricultural expansion: Land use change effects occur Read More >

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New Studies Support Cellulosic Ethanol

A team of researchers led by Jason Hill and David Tilman at the University of Minnesota have published an interesting assessment of the health costs of both greenhouse gas and fine particulate matter from corn ethanol, gasoline and cellulosic ethanol. The study is available in the Proceedings of the National Academy of Sciences early release for Feb. 10. The conclusion is favorable to cellulosic ethanol: The benefits of shifting from gasoline and the current generation Read More >

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