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Selected Issues Related to an Expansion of the Renewable Fuel Standard (RFS)

机译：与扩大可再生燃料标准（RFs）有关的若干问题

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High petroleum and gasoline prices, concerns over global climate change, and the desire to promote domestic rural economies have greatly increased interest in biofuels as an alternative to petroleum in the U.S. transportation sector. Biofuels, most notably corn ethanol, have grown significantly in the past few years as a component of U.S. motor fuel supply. Ethanol, the most commonly used biofuel, is blended in more than half of all U.S. gasoline (at the 10% level or lower in most cases). However, current biofuels supply of 6.8 billion gallons only represents about 4% of total vehicle fuel demand. The Energy Independence and Security Act of 2007 (EISA, P.L. 110-140) requires ever-larger amounts of biofuels produced from feedstocks other than corn starch, including sugarcane, oil crops, and cellulose, and promotes the development of these fuels. EISA requires the use of 36 billion gallons of renewable fuels annually in 2022, of which only 15 billion gallons can be ethanol from corn starch. The remaining 21 billion gallons are to be so-called advanced biofuels. The previous RFS in the Energy Policy Act of 2005 (P.L. 109-58) required the use of only 7.5 billion gallons in 2012, increasing to an expected 8.6 billion gallons in 2022, of which only 250 million gallons of cellulosic biofuels would be required.

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